S. Riyaz-Ul-Hassan, S. Rehman, A. S. Shawl, G. N. Qazi, J. Taylor
The endophytic fungus isolate, ZP5SE, recently described in Rehman et al. 2008 was misidentified identified as Neurospora crassa. The 28S ribosomal gene sequence of the isolate shows 100% sequence similarity with GenBank accession Neurospora crassa M38154. Creative Commons License This work is licensed under a Creative Commons Attribution-Share Alike 4.0 License. This regular paper is available in Fungal Genetics Reports: http://newprairiepress.org/fgr/vol56/iss1/2 Number 56, 2009 5 Fungal endophyte misidentified as Neurospora crassa. S. Riyaz-Ul-Hassan, S. Rehman, A. S. Shawl, G. N. Qazi, and J. Taylor. Biotechnology Division , Indian Institute of Integrative Medicine, Canal Road, Jammu, INDIA 180001. Indian Institute of Integrative Medicine (Branch Srinagar), Sanatnagar, Srinagar, INDIA 190005. Department of Plant and Microbial Biology, University of California, Berkeley, CA USA 94720-3102 *corresponding author: email: jtaylor@berkeley.edu Fungal Genetics Reports 56: 5 The endophytic fungus isolate, ZP5SE, recently described in Rehman et al. 2008 was misidentified identified as Neurospora crassa. The 28S ribosomal gene sequence of the isolate shows 100% sequence similarity with GenBank accession Neurospora crassa M38154. However, there are three additional 28S ribosomal gene sequences deposited in GenBank as N. crassa U40124 (culture NRRL 13141), N. crassa AF286411 (culture MUCL 19026), and N. crassa AY681158.1 (culture ICMP 6360). Phylogenetic analyses shows that these three additional sequences are closest relatives (100% similarity) and that this group is more distantly related to the ZP5SE and N. crassa M38154 sequences (88%-91% similarity). In phylogenetic analysis, the ZP5SE sequence and M38154 form a sister group to many Sordariaceae, including species of Neurospora, Gelasinospora and Sordaria (Figure 1). As a result, ZP5SE cannot yet be assigned to a particular genus or species on the basis of the 28S ribosomal gene sequence. In addition, we infer that the GenBank sequence M38154 must be incorrectly attributed to N. crassa. Figure 1. Phylogenetic analysis comparing the fungal endophyte (ZP5SE) with related fungi using partial SSU and LSU rDNA sequences from Figure 4 of Rehman et al. 2008. N. crassa AY681158 represents three GenBank sequences of N. crassa (AY681158, U40124 and AF286411), and is nestled with Gelasinospora species, as expected. N. crassa M38154 is quite distant from the three other N. crassa sequences and likely is misattributed to N. crassa. References: Rehman, S., Shawl, A.S., Verma, V., Kour, A., Athar, M., Andrabi, R., Sultan, P., and G.N. Qazi. 2008. An endophytic Neurospora sp. from Nothapodytes foetida producing camptothecin. Applied Biochemistry and Microbiology 44:203–209. ( Prikladnaya Biokhimiya i Mikrobiologiya 44:225–231.) Published by New Prairie Press, 2017
最近在Rehman et al. 2008中描述的内生真菌分离物ZP5SE被错误地鉴定为神经孢子菌。28S核糖体基因序列与GenBank收录的神经孢子虫M38154序列相似度为100%。本作品采用知识共享署名-相同方式共享4.0许可协议。这篇常规论文可在真菌遗传学报告:http://newprairiepress.org/fgr/vol56/iss1/2第56期,2009 5真菌内生菌被误认为神经孢子虫。S. riyazi - ul - hassan, S. Rehman, A. S. Shawl, G. N. Qazi和J. Taylor。印度中西医结合研究所生物技术处,查谟运河路,印度180001。印度中西医结合研究所(斯利那加分院),萨纳特纳加,印度斯利那加190005。最近在Rehman et al. 2008中描述的内生真菌分离物ZP5SE被错误地鉴定为神经孢子菌(Neurospora crassa)。28S核糖体基因序列与GenBank收录的神经孢子虫M38154序列相似度为100%。然而,在GenBank中还有另外三个28S核糖体基因序列,分别是N. crassa U40124(培养NRRL 13141), N. crassa AF286411(培养MUCL 19026)和N. crassa AY681158.1(培养ICMP 6360)。系统发育分析表明,这3个新增序列与ZP5SE和N. crassa M38154序列亲缘关系较远,相似度为88% ~ 91%。在系统发育分析中,ZP5SE序列和M38154形成了许多Sordariaceae的姐妹群,包括Neurospora, Gelasinospora和Sordaria(图1)。因此,基于28S核糖体基因序列,ZP5SE还不能被分配到特定的属或种。此外,我们推断GenBank序列M38154一定是错误地归属于N. crassa。图1所示。利用Rehman et al. 2008的图4中的部分SSU和LSU rDNA序列,对真菌内生菌(ZP5SE)与相关真菌进行系统发育分析。N. crassa AY681158代表了N. crassa的三个GenBank序列(AY681158、U40124和AF286411),与Gelasinospora物种相依。N. crassa M38154序列与其他3个N. crassa序列距离较远,可能被误归为N. crassa序列。参考文献:Rehman, S., Shawl, a.s., Verma, V., Kour, A., Athar, M., Andrabi, R., Sultan, P.,和G.N. Qazi. 2008。喜树碱一种产喜树碱的内生神经孢子菌属。应用生物化学和微生物学44(4):203 - 209。(Prikladnaya Biokhimiya i microbiologiya 44:25 - 231)新草原出版社2017年出版
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This bibliography represents my attempt to collect all works dealing substantially with Neurospora. Please let me know of anything published in 2007 or 2008 that is not included here or in the previous bibliography, so that it might be mentioned next year. I would be especially happy to hear of chapters from books, and articles from journals not indexed in major bibliographic services. Please also let me know of any errors in citation. Please send reprints or copies of articles to the Fungal Genetics Stock Center. This bibliography is available in Fungal Genetics Reports: https://newprairiepress.org/fgr/vol55/iss1/13 2008 Neurospora Bibliography This bibliography represents my attempt to collect all works dealing substantially with Neurospora. Please let me know of anything published in 2007 or 2008 that is not included here or in the previous bibliography, so that it might be mentioned next year. I would be especially happy to hear of chapters from books, and articles from journals not indexed in major bibliographic services. Please also let me know of any errors in citation. Please send reprints or copies of articles to the Fungal Genetics Stock Center. Craig Wilson, 15236 Ashworth Ave. N., Shoreline WA 98133, USA (chwilso@gmail.com) late addition from 2006: Holliday, R., and R. B. Flavell. 2006. John Robert Stanley Fincham: 11 August 1926 9 February 2005. Biogr. Mem. Fellows R. Soc. 52:83-95.
这个参考书目代表了我收集所有实质上与神经孢子虫有关的作品的尝试。请让我知道2007年或2008年出版的任何没有包括在这里或以前的参考书目中,以便明年可能会提到它。我将特别高兴地听到来自书籍的章节,以及来自没有被主要书目服务索引的期刊的文章。也请让我知道任何错误的引用。请将文章的转载或副本发送到真菌遗传学库存中心。这个参考书目可在真菌遗传学报告:https://newprairiepress.org/fgr/vol55/iss1/13 2008神经孢子虫参考书目这个参考书目代表我的尝试收集所有的工作实质上处理神经孢子虫。请让我知道2007年或2008年出版的任何没有包括在这里或以前的参考书目中,以便明年可能会提到它。我将特别高兴地听到来自书籍的章节,以及来自没有被主要书目服务索引的期刊的文章。也请让我知道任何错误的引用。请将文章的转载或副本发送到真菌遗传学库存中心。Craig Wilson, 15236 Ashworth Ave. N, Shoreline WA 98133, USA (chwilso@gmail.com) 2006年后期加入:Holliday, R.和R. B. Flavell. 2006。约翰·罗伯特·斯坦利·芬奇姆:1926年8月11日,2005年2月9日。Biogr。Mem。《社会科学》52:83-95。
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Originally, Neurospora crassa genes were named for their mutant phenotypes or natural variant properties. Genes are now increasingly named on the basis of cross-species sequence similarity. These names may also be supported by predicted or experimentally identified molecular function. As a consequence, N. crassa gene nomenclature in practice is frequently no longer adequately covered by the established conventions (Perkins et al. 2001). Here we provide additional nomenclature guidelines relevant to these new circumstances, and some general guidelines for providing information on the identity of N. crassa genes in scientific communications. Creative Commons License This work is licensed under a Creative Commons Attribution-Share Alike 4.0 License. This regular paper is available in Fungal Genetics Reports: http://newprairiepress.org/fgr/vol55/iss1/7 32 Fungal Genetics Reports The Neurospora crassa colonial temperature sensitive 2, 4 and 5 (cot-2, cot-4 and cot-5) genes encode regulatory and structural proteins required for hyphal elongation and branching Zipi Resheat-Eini, Alex Zelter, Rena Gorovits, Nick D. Read and Oded Yarden* Department of Plant Pathology and Microbiology, The Otto Warburg Minerva Center for Agricultural Biotechnology, Faculty of Agricultural, Food and Environmental Quality Sciences, The Hebrew University of Jerusalem, Rehovot, 76100, Israel and Fungal Cell Biology Group, Institute of Cell and Molecular Biology, University of Edinburgh, Rutherford Building, Edinburgh EH9 3JH, UK. *corresponding author, email: Oded.Yarden@huji.ac.il Fungal Genetics Reports 55:32-36 The morphology and the genetic defects of the Neurospora crassa colonial temperature-sensitive-2, -4 and -5 mutants were analyzed. cot-2 is allelic to gs-1 and encodes a component of the glucan synthesis process. cot-4 encodes the catalytic subunit of a type 2B phosphatase and is allelic to calcineurin (cna-1). cot-5 encodes a homologue of the S. cerevisiae ALG2 manosyltransferase-encoding gene, a component of the dolichol pathway. A group of five non-allelic Neurospora crassa colonial temperature sensitive (cot) mutants was described by Garnjobst and Tatum (1967). The cot-1 gene was found to encode a Ser/Thr protein kinase (Yarden et al. 1992) which is the founding member of the NDR kinase family. The nature of the cot-3 defect has also been analyzed and the cot-3 gene was found to encode protein elongation factor 2 (Propheta et al. 2001). In order to expand our understanding of the genetic defects that can confer abnormal hyphal elongation/branching patterns, we have performed morphological and genetic analyses of the three remaining cot mutants isolated by Garnjobst and Tatum. We found that even though they all exhibit compact temperaturesensitive macroscopic colonial features, their microscopic hyphal morphology and branching patterns differ. Furthermore, the genetic defects involved in conferring their phenotypes include both regulatory as well as structural fac
最初,粗神经孢子虫基因因其突变表型或自然变异特性而命名。现在越来越多的基因是根据跨物种序列相似性来命名的。这些名称也可以通过预测或实验确定的分子功能来支持。因此,在实践中,棘球蚴基因的命名法经常不再被现有的惯例充分覆盖(Perkins et al. 2001)。在此,我们提供了与这些新情况相关的额外命名指南,以及一些在科学传播中提供关于草稻基因身份信息的一般指南。本作品采用知识共享署名-相同方式共享4.0许可协议。这篇常规论文发表在《真菌遗传学报告》上:http://newprairiepress.org/fgr/vol55/iss1/7 32真菌遗传学报道:粗神经孢子虫菌落温敏2、4和5 (cot-2、cot-4和cot-5)基因编码菌丝伸长和分枝所需的调控和结构蛋白。Zipi Resheat-Eini, Alex Zelter, Rena Gorovits, Nick D. Read和Oded Yarden*, Otto Warburg Minerva农业生物技术中心,农业学院,植物病理学和微生物学食品和环境质量科学,耶路撒冷希伯来大学,Rehovot, 76100,以色列;真菌细胞生物学组,细胞和分子生物学研究所,爱丁堡大学,卢瑟福大楼,爱丁堡EH9 3JH,英国。*通讯作者,email: Oded.Yarden@huji.ac.il真菌遗传学报告55:32-36分析了粗神经孢子虫菌落温度敏感-2、-4和-5突变体的形态和遗传缺陷。Cot-2是gs-1的等位基因,编码葡聚糖合成过程的一个组成部分。cot-4编码2B型磷酸酶的催化亚基,与钙调磷酸酶(na-1)等位。cot-5编码酿酒葡萄球菌ALG2锰基转移酶编码基因的同源物,该基因是乙醇途径的一个组成部分。Garnjobst和Tatum(1967)描述了一组5个非等位基因的草神经孢子虫(Neurospora crassa)群体温度敏感突变体。cot-1基因被发现编码丝氨酸/苏氨酸蛋白激酶(Yarden et al. 1992),该蛋白激酶是NDR激酶家族的创始成员。对cot-3缺陷的性质也进行了分析,发现cot-3基因编码蛋白延伸因子2 (Propheta et al. 2001)。为了扩大我们对导致菌丝异常伸长/分枝模式的遗传缺陷的理解,我们对Garnjobst和Tatum分离的三个剩余的cot突变体进行了形态学和遗传学分析。我们发现,尽管它们都表现出致密的温度敏感的宏观群体特征,但它们的微观菌丝形态和分支模式不同。此外,遗传缺陷涉及赋予其表型包括调控和结构因素,所有这些都需要维持适当的菌丝伸长和分支模式。共聚焦显微镜检查,使用膜选择性染料FM4-64(如Hickey et al. 2005所述)的粗神经孢子虫野生型(74-OR23-1A;FGSC987), cot-1 (FGSC 4065), cot-2 (FGSC 1512), cot-3 (FGSC 1517), cot4 (FGSC 3600)和cot-5 (FGSC 1362)显示不同菌株之间存在显著的形态学差异(图1)。由于对cot-1和cot-3的形态学特征进行了深入研究(Collinge和Trinci, 1974;Collinge et al. 1978;Propheta et al. 2001),我们专注于对cot-2、cot-4和cot-5观察到的差异进行量化。在允许和限制条件下,在标准固体培养基上测量了cot-2、cot-4和cot-5的菌丝延伸率。在限制温度下培养时,所有突变体的伸长率均显著降低(75%至99%)(分别为0.15±0.03 mm/h、0.27±0.05 mm/h, cot-2、cot-4和cot-5的伸长率可忽略不计),分枝率增加。尽管突变体的表型明显对温度敏感,但我们发现即使在允许的温度下,它们的分支率也明显更高(60%至160%)(表1)。在大多数情况下,观察到的超分支模式是侧向的,而不是顶端的(Watters et al. 2000)。尽管如此,在cot-5菌株中,一些根尖/二分分支是明显的(与温度无关;图1 j - k)。图1所示。允许温度(24℃)和限制温度(37℃)下野生型和群体温度敏感菌株的形态。真菌用FM4-64染色,并用共聚焦显微镜成像。(a) 24℃下生长的cot-1;(b) cot- 1,37 C;(c)野生型,37℃;(d) cot- 2,24 C;(e) cot- 2,37℃;(f) cot- 3,24℃;(g) cot- 3,37℃;(h) cot4, 24℃;(i) cot- 4,37 C;(j) cot- 5,24 C;(k) cot-5, 37℃,bar为50 um。新草原出版社2017年出版
{"title":"Recommendations for assigning symbols and names to Neurospora crassa genes now that its genome has been sequenced.","authors":"H. M. Hood, A. Radford, M. Sachs","doi":"10.4148/1941-4765.1087","DOIUrl":"https://doi.org/10.4148/1941-4765.1087","url":null,"abstract":"Originally, Neurospora crassa genes were named for their mutant phenotypes or natural variant properties. Genes are now increasingly named on the basis of cross-species sequence similarity. These names may also be supported by predicted or experimentally identified molecular function. As a consequence, N. crassa gene nomenclature in practice is frequently no longer adequately covered by the established conventions (Perkins et al. 2001). Here we provide additional nomenclature guidelines relevant to these new circumstances, and some general guidelines for providing information on the identity of N. crassa genes in scientific communications. Creative Commons License This work is licensed under a Creative Commons Attribution-Share Alike 4.0 License. This regular paper is available in Fungal Genetics Reports: http://newprairiepress.org/fgr/vol55/iss1/7 32 Fungal Genetics Reports The Neurospora crassa colonial temperature sensitive 2, 4 and 5 (cot-2, cot-4 and cot-5) genes encode regulatory and structural proteins required for hyphal elongation and branching Zipi Resheat-Eini, Alex Zelter, Rena Gorovits, Nick D. Read and Oded Yarden* Department of Plant Pathology and Microbiology, The Otto Warburg Minerva Center for Agricultural Biotechnology, Faculty of Agricultural, Food and Environmental Quality Sciences, The Hebrew University of Jerusalem, Rehovot, 76100, Israel and Fungal Cell Biology Group, Institute of Cell and Molecular Biology, University of Edinburgh, Rutherford Building, Edinburgh EH9 3JH, UK. *corresponding author, email: Oded.Yarden@huji.ac.il Fungal Genetics Reports 55:32-36 The morphology and the genetic defects of the Neurospora crassa colonial temperature-sensitive-2, -4 and -5 mutants were analyzed. cot-2 is allelic to gs-1 and encodes a component of the glucan synthesis process. cot-4 encodes the catalytic subunit of a type 2B phosphatase and is allelic to calcineurin (cna-1). cot-5 encodes a homologue of the S. cerevisiae ALG2 manosyltransferase-encoding gene, a component of the dolichol pathway. A group of five non-allelic Neurospora crassa colonial temperature sensitive (cot) mutants was described by Garnjobst and Tatum (1967). The cot-1 gene was found to encode a Ser/Thr protein kinase (Yarden et al. 1992) which is the founding member of the NDR kinase family. The nature of the cot-3 defect has also been analyzed and the cot-3 gene was found to encode protein elongation factor 2 (Propheta et al. 2001). In order to expand our understanding of the genetic defects that can confer abnormal hyphal elongation/branching patterns, we have performed morphological and genetic analyses of the three remaining cot mutants isolated by Garnjobst and Tatum. We found that even though they all exhibit compact temperaturesensitive macroscopic colonial features, their microscopic hyphal morphology and branching patterns differ. Furthermore, the genetic defects involved in conferring their phenotypes include both regulatory as well as structural fac","PeriodicalId":12490,"journal":{"name":"Fungal Genetics Reports","volume":"1 1","pages":"29-31"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85324085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Neurospora crassa temperature sensitive mutation known as un-4 has been shown by a map-based complementation approach to be a single nucleotide change in the open reading frame of the mitochondrial inner membrane translocase subunit tim16 (NCU05515). This regular paper is available in Fungal Genetics Reports: https://newprairiepress.org/fgr/vol55/iss1/9
{"title":"Demonstration that the Neurospora crassa mutation un-4 is a single nucleotide change in the tim16 gene encoding a subunit of the mitochondrial inner membrane translocase","authors":"A. Wiest, M. Plamann, K. McCluskey","doi":"10.4148/1941-4765.1089","DOIUrl":"https://doi.org/10.4148/1941-4765.1089","url":null,"abstract":"The Neurospora crassa temperature sensitive mutation known as un-4 has been shown by a map-based complementation approach to be a single nucleotide change in the open reading frame of the mitochondrial inner membrane translocase subunit tim16 (NCU05515). This regular paper is available in Fungal Genetics Reports: https://newprairiepress.org/fgr/vol55/iss1/9","PeriodicalId":12490,"journal":{"name":"Fungal Genetics Reports","volume":"14 1","pages":"37-39"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87202880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We report the utilization of Discosoma sp. red fluorescent protein DsRed to visualize peroxisomes in the filamentous ascomycete Sordaria macrospora. To achieve labeling of peroxisomes, DsRed was fused to a serine-lysine-leucine tag (SKL). Expression of the DsRed-SKL fusion gene under the control of the Aspergillus nidulans gpd-promoter led to protein import of DsRed into peroxisomes. In this study, we describe our results concerning the construction as well as the application of vector pDsRed-SKL.
{"title":"Visualization of peroxisomes via SKL-tagged DsRed protein in Sordaria macrospora","authors":"Skander Elleuche, S. Pöggeler","doi":"10.4148/1941-4765.1083","DOIUrl":"https://doi.org/10.4148/1941-4765.1083","url":null,"abstract":"We report the utilization of Discosoma sp. red fluorescent protein DsRed to visualize peroxisomes in the filamentous ascomycete Sordaria macrospora. To achieve labeling of peroxisomes, DsRed was fused to a serine-lysine-leucine tag (SKL). Expression of the DsRed-SKL fusion gene under the control of the Aspergillus nidulans gpd-promoter led to protein import of DsRed into peroxisomes. In this study, we describe our results concerning the construction as well as the application of vector pDsRed-SKL.","PeriodicalId":12490,"journal":{"name":"Fungal Genetics Reports","volume":"30 1","pages":"9-12"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82590543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A putative homolog of the Sacharromyces cereviseae ADE6 and Escherichia coli purL genes is identified near a multigenic complex, which contains two genes, sid1 and sid2, involved in a siderophore biosynthetic pathway inUstilago maydis. The putative ADE6 homolog was mutated by targeted gene disruption. The resulting mutant strains demonstrated a requirement for exogenous adenine, indicating that the U. maydis ade6 homolog is required for purine biosynthesis. Authors M. L. Heidenreich, A. D. Budde, An Zhiqiang, and S. A. Leong This regular paper is available in Fungal Genetics Reports: https://newprairiepress.org/fgr/vol55/iss1/10 40 Fungal Genetics Reports Disruption of a Yeast ADE6 Gene Homolog in Ustilago maydis Heidenreich, M. L., Budde, A. D., Zhiqiang, An,and Leong, S. A. Department of Bacteriology, University of Wisconsin, Madison, WI 53706. USDA, ARS CCRU, Madison, WI 53726. Department of Plant Pathology, University of Wisconsin, Madison, WI, 53706 Fungal Genetics Reports 55:40-43 A putative homolog of the Sacharromyces cereviseae ADE6 and Escherichia coli purL genes is identified near a multigenic complex, which contains two genes, sid1 and sid2, involved in a siderophore biosynthetic pathway in Ustilago maydis. The putative ADE6 homolog was mutated by targeted gene disruption. The resulting mutant strains demonstrated a requirement for exogenous adenine, indicating that the U. maydis ade6 homolog is required for purine biosynthesis. Ustilago maydis is the causal agent of corn smut disease. Under conditions of iron stress, this fungus produces cyclic peptides, siderophores, for the purpose of iron acquisition (Leong and Winkelmann, 1998). The limits of this gene cluster were investigated by systematically analyzing the sequence of the flanking DNA. The Ustilago genomic sequence of the region downstream of sid1 sequence showed a predicted 1402 amino acid polypeptide encoding a probable ade6 gene (http://mips.gsf.de/genre/proj/ustilago/singleGeneReport.html?entry=um05162), and having 55.7% similarity to the translated purL gene of E. coliB, and 54.2% similarity with the translated ADE6 gene of Saccharomyces cerevisiae. These genes encode formylglycineamide ribonucleotide synthetase, which catalyzes the fourth step in the purine biosynthetic pathway (Schendel et. al., 1989). Information contained in the S. cerevisiae Genbank sequence submission 557019 indicated that disruption of this gene leads to an adenine-requiring phenotype. To determine whether the predicted ade6 gene is required for purine biosynthesis, the gene was disrupted by insertion of a cassette encoding hygromycin phosphotransferase. Materials and Methods The HindlII-NruI fragment containing the 5’ region of the putative ade6 gene was derived from an 8.2 kb HindIII fragment of pSid1, a cosmid clone that contains a Sau3A partial digest of a region of the genome of Ustilago strain 518 (Wang et. al., 1989), Table 1. The 8.2 kb HindIII fragment was initially cloned into pUC18 follo
在一个多基因复合体附近发现了酿酒酵母ADE6和大肠杆菌purL基因的同源性,该复合体包含两个基因sid1和sid2,这些基因参与了麦氏黑穗病菌的铁载体生物合成途径。假定的ADE6同源物因靶向基因破坏而发生突变。由此产生的突变株显示出对外源性腺嘌呤的需求,这表明U. maydis ade6同源物是嘌呤生物合成所必需的。作者M. L. Heidenreich, a . D. Budde, An Zhiqiang, and S. a . Leong这篇论文可以在真菌遗传学报告中找到:https://newprairiepress.org/fgr/vol55/iss1/10 40真菌遗传学报告:酵母ADE6基因同源物在Ustilago maydis Heidenreich, M. L. Budde, a . D, Zhiqiang, An,and Leong, S. a .细菌学系,威斯康星大学麦迪逊分校,WI 53706。美国农业部农业研究中心,威斯康辛州麦迪逊53726。在麦氏黑穗病菌(Ustilago maydis)的铁载体生物合成途径中,一个含有sid1和sid2两个基因的多基因复合体附近发现了一个假定的同源基因,该基因与酿酒sacharroomyces cereviseae ADE6和Escherichia coli purL基因具有同源性。假定的ADE6同源物因靶向基因破坏而发生突变。由此产生的突变株显示出对外源性腺嘌呤的需求,这表明U. maydis ade6同源物是嘌呤生物合成所必需的。玉米黑穗病是玉米黑穗病的病原。在铁胁迫条件下,这种真菌产生环状肽,铁载体,以获取铁(Leong和Winkelmann, 1998)。通过系统分析该基因簇的侧翼DNA序列,探讨了该基因簇的局限性。sid1序列下游区域的黑穗病菌基因组序列显示一个预测的1402氨基酸多肽,编码一个可能的ade6基因(http://mips.gsf.de/genre/proj/ustilago/singleGeneReport.html?entry=um05162),与大肠杆菌(E. coliB)翻译的purL基因相似度为55.7%,与酿酒酵母(Saccharomyces cerevisiae)翻译的ade6基因相似度为54.2%。这些基因编码甲酰甘氨酸酰胺核糖核苷酸合成酶,催化嘌呤生物合成途径的第四步(Schendel et. al., 1989)。cerevisiae Genbank序列提交557019中包含的信息表明,该基因的破坏导致需要腺嘌呤的表型。为了确定预测的ade6基因是否为嘌呤生物合成所必需,通过插入编码湿霉素磷酸转移酶的磁带来破坏该基因。包含ade6基因5 '区的hindli - nrui片段来源于pSid1的8.2 kb的HindIII片段,pSid1是一个cosmid克隆,包含Ustilago菌株518基因组区域的Sau3A部分消化(Wang et. al., 1989),表1。8.2 kb的HindIII片段最初被克隆到pUC18中,然后删除SmaI-NruI和内部NruI-NruI片段,得到2.5 kb的克隆HindIII- nrui插入片段(图1)。使用碱性裂解方案从大肠杆菌中分离质粒DNA (Maniatis et. al., 1982)。用玻璃球技术进行了美氏菌染色体DNA分离(Voisard et al., 1993)。按照制造商(New England Biolabs)的建议进行限制性内切酶消化。大肠杆菌转化采用钙休克法进行(Maniatis et. al., 1982)。美国maydis的转变按照描述进行(Voisard et. al., 1993)。放射性标记、DNA连接和合成按照标准程序进行(Maniatis等人,1982年)。按照描述进行群体杂交和南方杂交(Holden et. al., 1989)。翻译序列使用Lasergene 7.1 (DNAstar, Madison)的Lipman Pearson方法进行成对比对,并使用Lasergene 7.1 (DNAstar, Madison)的Clustal W与本研究生成的ade6翻译序列、Ustilago基因组(http://mips.gsf.de/genre/proj/ustilago/singleGeneReport.html?entry=um05162)中假设的ade6蛋白、大肠杆菌PurL和酵母ade6进行多重比对。菌株相关特征来源U. maydis #521 (FGSC 9914)野生型a1b1 Robin Holliday,英国米尔希尔国家医学研究所,U. maydis #518 (FGSC 9914)野生型a2b2 Robin Holliday,英国米尔希尔国家医学研究所真菌菌株1 Heidenreich等人:黑穗病菌ADE6基因同源物的破坏新草原出版社,2017
{"title":"Disruption of a Yeast ADE6 Gene Homolog in Ustilago maydis","authors":"M. Heidenreich, A. Budde, An Zhiqiang, S. Leong","doi":"10.4148/1941-4765.1090","DOIUrl":"https://doi.org/10.4148/1941-4765.1090","url":null,"abstract":"A putative homolog of the Sacharromyces cereviseae ADE6 and Escherichia coli purL genes is identified near a multigenic complex, which contains two genes, sid1 and sid2, involved in a siderophore biosynthetic pathway inUstilago maydis. The putative ADE6 homolog was mutated by targeted gene disruption. The resulting mutant strains demonstrated a requirement for exogenous adenine, indicating that the U. maydis ade6 homolog is required for purine biosynthesis. Authors M. L. Heidenreich, A. D. Budde, An Zhiqiang, and S. A. Leong This regular paper is available in Fungal Genetics Reports: https://newprairiepress.org/fgr/vol55/iss1/10 40 Fungal Genetics Reports Disruption of a Yeast ADE6 Gene Homolog in Ustilago maydis Heidenreich, M. L., Budde, A. D., Zhiqiang, An,and Leong, S. A. Department of Bacteriology, University of Wisconsin, Madison, WI 53706. USDA, ARS CCRU, Madison, WI 53726. Department of Plant Pathology, University of Wisconsin, Madison, WI, 53706 Fungal Genetics Reports 55:40-43 A putative homolog of the Sacharromyces cereviseae ADE6 and Escherichia coli purL genes is identified near a multigenic complex, which contains two genes, sid1 and sid2, involved in a siderophore biosynthetic pathway in Ustilago maydis. The putative ADE6 homolog was mutated by targeted gene disruption. The resulting mutant strains demonstrated a requirement for exogenous adenine, indicating that the U. maydis ade6 homolog is required for purine biosynthesis. Ustilago maydis is the causal agent of corn smut disease. Under conditions of iron stress, this fungus produces cyclic peptides, siderophores, for the purpose of iron acquisition (Leong and Winkelmann, 1998). The limits of this gene cluster were investigated by systematically analyzing the sequence of the flanking DNA. The Ustilago genomic sequence of the region downstream of sid1 sequence showed a predicted 1402 amino acid polypeptide encoding a probable ade6 gene (http://mips.gsf.de/genre/proj/ustilago/singleGeneReport.html?entry=um05162), and having 55.7% similarity to the translated purL gene of E. coliB, and 54.2% similarity with the translated ADE6 gene of Saccharomyces cerevisiae. These genes encode formylglycineamide ribonucleotide synthetase, which catalyzes the fourth step in the purine biosynthetic pathway (Schendel et. al., 1989). Information contained in the S. cerevisiae Genbank sequence submission 557019 indicated that disruption of this gene leads to an adenine-requiring phenotype. To determine whether the predicted ade6 gene is required for purine biosynthesis, the gene was disrupted by insertion of a cassette encoding hygromycin phosphotransferase. Materials and Methods The HindlII-NruI fragment containing the 5’ region of the putative ade6 gene was derived from an 8.2 kb HindIII fragment of pSid1, a cosmid clone that contains a Sau3A partial digest of a region of the genome of Ustilago strain 518 (Wang et. al., 1989), Table 1. The 8.2 kb HindIII fragment was initially cloned into pUC18 follo","PeriodicalId":12490,"journal":{"name":"Fungal Genetics Reports","volume":"18 1","pages":"40-43"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88597618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Clark, J. Guilmette, Daniel Renstrom, J. Townsend
We developed protocols optimized for the performance of experiments assaying genomic gene expression using Neurospora crassa long-oligomer microarrays. We present methods for sample growth and harvesting, total RNA extraction, poly(A) mRNA selection, preparation of NH3-Allyl Cy3/Cy5 labeled probes, and microarray hybridization. The quality of the data obtained with these protocols is demonstrated by the comparative transcriptional profiling of basal and apical zones of vegetative growth of N. crassa.
{"title":"RNA extraction, probe preparation, and competitive hybridization for transcriptional profiling using Neurospora crassa long-oligomer DNA microarrays","authors":"T. Clark, J. Guilmette, Daniel Renstrom, J. Townsend","doi":"10.4148/1941-4765.1086","DOIUrl":"https://doi.org/10.4148/1941-4765.1086","url":null,"abstract":"We developed protocols optimized for the performance of experiments assaying genomic gene expression using Neurospora crassa long-oligomer microarrays. We present methods for sample growth and harvesting, total RNA extraction, poly(A) mRNA selection, preparation of NH3-Allyl Cy3/Cy5 labeled probes, and microarray hybridization. The quality of the data obtained with these protocols is demonstrated by the comparative transcriptional profiling of basal and apical zones of vegetative growth of N. crassa.","PeriodicalId":12490,"journal":{"name":"Fungal Genetics Reports","volume":"12 1","pages":"18-28"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76335636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zipi Resheat-Eini, A. Zelter, R. Gorovits, N. Read, O. Yarden
The morphology and the genetic defects of theNeurospora crassa colonial temperature-sensitive-2, -4 and -5 mutants were analyzed. cot-2 is allelic to gs-1 and encodes a component of the glucan synthesis process. cot-4 encodes the catalytic subunit of a type 2B phosphatase and is allelic to calcineurin (cna-1). cot-5 encodes a homologue of the S. cerevisiae ALG2 manosyltransferase-encoding gene, a component of the dolichol pathway. Creative Commons License This work is licensed under a Creative Commons Attribution-Share Alike 4.0 License. This regular paper is available in Fungal Genetics Reports: http://newprairiepress.org/fgr/vol55/iss1/8 32 Fungal Genetics Reports The Neurospora crassa colonial temperature sensitive 2, 4 and 5 (cot-2, cot-4 and cot-5) genes encode regulatory and structural proteins required for hyphal elongation and branching Zipi Resheat-Eini, Alex Zelter, Rena Gorovits, Nick D. Read and Oded Yarden* Department of Plant Pathology and Microbiology, The Otto Warburg Minerva Center for Agricultural Biotechnology, Faculty of Agricultural, Food and Environmental Quality Sciences, The Hebrew University of Jerusalem, Rehovot, 76100, Israel and Fungal Cell Biology Group, Institute of Cell and Molecular Biology, University of Edinburgh, Rutherford Building, Edinburgh EH9 3JH, UK. *corresponding author, email: Oded.Yarden@huji.ac.il Fungal Genetics Reports 55:32-36 The morphology and the genetic defects of the Neurospora crassa colonial temperature-sensitive-2, -4 and -5 mutants were analyzed. cot-2 is allelic to gs-1 and encodes a component of the glucan synthesis process. cot-4 encodes the catalytic subunit of a type 2B phosphatase and is allelic to calcineurin (cna-1). cot-5 encodes a homologue of the S. cerevisiae ALG2 manosyltransferase-encoding gene, a component of the dolichol pathway. A group of five non-allelic Neurospora crassa colonial temperature sensitive (cot) mutants was described by Garnjobst and Tatum (1967). The cot-1 gene was found to encode a Ser/Thr protein kinase (Yarden et al. 1992) which is the founding member of the NDR kinase family. The nature of the cot-3 defect has also been analyzed and the cot-3 gene was found to encode protein elongation factor 2 (Propheta et al. 2001). In order to expand our understanding of the genetic defects that can confer abnormal hyphal elongation/branching patterns, we have performed morphological and genetic analyses of the three remaining cot mutants isolated by Garnjobst and Tatum. We found that even though they all exhibit compact temperaturesensitive macroscopic colonial features, their microscopic hyphal morphology and branching patterns differ. Furthermore, the genetic defects involved in conferring their phenotypes include both regulatory as well as structural factors, all of which are required for maintaining proper hyphal elongation and branching patterns. Confocal microscopic examination, using the membrane-selective dye FM4-64 (as described by Hickey et al. 2005) of Ne
分析了粗草eurospora colonia温度敏感突变体-2、-4和-5的形态和遗传缺陷。Cot-2是gs-1的等位基因,编码葡聚糖合成过程的一个组成部分。cot-4编码2B型磷酸酶的催化亚基,与钙调磷酸酶(na-1)等位。cot-5编码酿酒葡萄球菌ALG2锰基转移酶编码基因的同源物,该基因是乙醇途径的一个组成部分。本作品采用知识共享署名-相同方式共享4.0许可协议。这篇常规论文发表在《真菌遗传学报告》上:http://newprairiepress.org/fgr/vol55/iss1/8 32真菌遗传学报道:粗神经孢子虫菌落温敏2、4和5 (cot-2、cot-4和cot-5)基因编码菌丝伸长和分枝所需的调控和结构蛋白。Zipi Resheat-Eini, Alex Zelter, Rena Gorovits, Nick D. Read和Oded Yarden*, Otto Warburg Minerva农业生物技术中心,农业学院,植物病理学和微生物学食品和环境质量科学,耶路撒冷希伯来大学,Rehovot, 76100,以色列;真菌细胞生物学组,细胞和分子生物学研究所,爱丁堡大学,卢瑟福大楼,爱丁堡EH9 3JH,英国。*通讯作者,email: Oded.Yarden@huji.ac.il真菌遗传学报告55:32-36分析了粗神经孢子虫菌落温度敏感-2、-4和-5突变体的形态和遗传缺陷。Cot-2是gs-1的等位基因,编码葡聚糖合成过程的一个组成部分。cot-4编码2B型磷酸酶的催化亚基,与钙调磷酸酶(na-1)等位。cot-5编码酿酒葡萄球菌ALG2锰基转移酶编码基因的同源物,该基因是乙醇途径的一个组成部分。Garnjobst和Tatum(1967)描述了一组5个非等位基因的草神经孢子虫(Neurospora crassa)群体温度敏感突变体。cot-1基因被发现编码丝氨酸/苏氨酸蛋白激酶(Yarden et al. 1992),该蛋白激酶是NDR激酶家族的创始成员。对cot-3缺陷的性质也进行了分析,发现cot-3基因编码蛋白延伸因子2 (Propheta et al. 2001)。为了扩大我们对导致菌丝异常伸长/分枝模式的遗传缺陷的理解,我们对Garnjobst和Tatum分离的三个剩余的cot突变体进行了形态学和遗传学分析。我们发现,尽管它们都表现出致密的温度敏感的宏观群体特征,但它们的微观菌丝形态和分支模式不同。此外,遗传缺陷涉及赋予其表型包括调控和结构因素,所有这些都需要维持适当的菌丝伸长和分支模式。共聚焦显微镜检查,使用膜选择性染料FM4-64(如Hickey et al. 2005所述)的粗神经孢子虫野生型(74-OR23-1A;FGSC987), cot-1 (FGSC 4065), cot-2 (FGSC 1512), cot-3 (FGSC 1517), cot4 (FGSC 3600)和cot-5 (FGSC 1362)显示不同菌株之间存在显著的形态学差异(图1)。由于对cot-1和cot-3的形态学特征进行了深入研究(Collinge和Trinci, 1974;Collinge et al. 1978;Propheta et al. 2001),我们专注于对cot-2、cot-4和cot-5观察到的差异进行量化。在允许和限制条件下,在标准固体培养基上测量了cot-2、cot-4和cot-5的菌丝延伸率。在限制温度下培养时,所有突变体的伸长率均显著降低(75%至99%)(分别为0.15±0.03 mm/h、0.27±0.05 mm/h, cot-2、cot-4和cot-5的伸长率可忽略不计),分枝率增加。尽管突变体的表型明显对温度敏感,但我们发现即使在允许的温度下,它们的分支率也明显更高(60%至160%)(表1)。在大多数情况下,观察到的超分支模式是侧向的,而不是顶端的(Watters et al. 2000)。尽管如此,在cot-5菌株中,一些根尖/二分分支是明显的(与温度无关;图1 j - k)。图1所示。允许温度(24℃)和限制温度(37℃)下野生型和群体温度敏感菌株的形态。真菌用FM4-64染色,并用共聚焦显微镜成像。(a) 24℃下生长的cot-1;(b) cot- 1,37 C;(c)野生型,37℃;(d) cot- 2,24 C;(e) cot- 2,37℃;(f) cot- 3,24℃;(g) cot- 3,37℃;(h) cot4, 24℃;(i) cot- 4,37 C;(j) cot- 5,24 C;(k) cot-5, 37℃,bar为50 um。新草原出版社2017年出版
{"title":"The Neurospora crassa colonial temperature sensitive 2, 4 and 5 (cot-2, cot-4 and cot-5) genes encode regulatory and structural proteins required for hyphal elongation and branching","authors":"Zipi Resheat-Eini, A. Zelter, R. Gorovits, N. Read, O. Yarden","doi":"10.4148/1941-4765.1088","DOIUrl":"https://doi.org/10.4148/1941-4765.1088","url":null,"abstract":"The morphology and the genetic defects of theNeurospora crassa colonial temperature-sensitive-2, -4 and -5 mutants were analyzed. cot-2 is allelic to gs-1 and encodes a component of the glucan synthesis process. cot-4 encodes the catalytic subunit of a type 2B phosphatase and is allelic to calcineurin (cna-1). cot-5 encodes a homologue of the S. cerevisiae ALG2 manosyltransferase-encoding gene, a component of the dolichol pathway. Creative Commons License This work is licensed under a Creative Commons Attribution-Share Alike 4.0 License. This regular paper is available in Fungal Genetics Reports: http://newprairiepress.org/fgr/vol55/iss1/8 32 Fungal Genetics Reports The Neurospora crassa colonial temperature sensitive 2, 4 and 5 (cot-2, cot-4 and cot-5) genes encode regulatory and structural proteins required for hyphal elongation and branching Zipi Resheat-Eini, Alex Zelter, Rena Gorovits, Nick D. Read and Oded Yarden* Department of Plant Pathology and Microbiology, The Otto Warburg Minerva Center for Agricultural Biotechnology, Faculty of Agricultural, Food and Environmental Quality Sciences, The Hebrew University of Jerusalem, Rehovot, 76100, Israel and Fungal Cell Biology Group, Institute of Cell and Molecular Biology, University of Edinburgh, Rutherford Building, Edinburgh EH9 3JH, UK. *corresponding author, email: Oded.Yarden@huji.ac.il Fungal Genetics Reports 55:32-36 The morphology and the genetic defects of the Neurospora crassa colonial temperature-sensitive-2, -4 and -5 mutants were analyzed. cot-2 is allelic to gs-1 and encodes a component of the glucan synthesis process. cot-4 encodes the catalytic subunit of a type 2B phosphatase and is allelic to calcineurin (cna-1). cot-5 encodes a homologue of the S. cerevisiae ALG2 manosyltransferase-encoding gene, a component of the dolichol pathway. A group of five non-allelic Neurospora crassa colonial temperature sensitive (cot) mutants was described by Garnjobst and Tatum (1967). The cot-1 gene was found to encode a Ser/Thr protein kinase (Yarden et al. 1992) which is the founding member of the NDR kinase family. The nature of the cot-3 defect has also been analyzed and the cot-3 gene was found to encode protein elongation factor 2 (Propheta et al. 2001). In order to expand our understanding of the genetic defects that can confer abnormal hyphal elongation/branching patterns, we have performed morphological and genetic analyses of the three remaining cot mutants isolated by Garnjobst and Tatum. We found that even though they all exhibit compact temperaturesensitive macroscopic colonial features, their microscopic hyphal morphology and branching patterns differ. Furthermore, the genetic defects involved in conferring their phenotypes include both regulatory as well as structural factors, all of which are required for maintaining proper hyphal elongation and branching patterns. Confocal microscopic examination, using the membrane-selective dye FM4-64 (as described by Hickey et al. 2005) of Ne","PeriodicalId":12490,"journal":{"name":"Fungal Genetics Reports","volume":"1 1","pages":"32-36"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80765050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An improved plasmid for transformation of Neurospora crassa using the pan-2 gene as a selectable marker","authors":"Wilson Low, G. Jedd","doi":"10.4148/1941-4765.1091","DOIUrl":"https://doi.org/10.4148/1941-4765.1091","url":null,"abstract":"","PeriodicalId":12490,"journal":{"name":"Fungal Genetics Reports","volume":"136 1","pages":"44-45"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83164923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Solomon, Simon V. S. Ipcho, James K. Hane, K. Tan, R. Oliver
Here, we report on the use of quantitative PCR (qPCR) to determine gene copy number in filamentous fungi. Using the sequenced dothideomycete Stagonospora nodorum, qPCR was used to unequivocally confirm the presence of single, two and three copy regions as predicted by in silico PCR. Further validation of the technique was demonstrated by verifying the copy numbers of introduced gene cassettes in previously characterised transformants of S. nodorum. Apart from increased sensitivity, this technique offers a high-throughput alternative to Southern blots for determining gene copy number, a
{"title":"A quantitative PCR approach to determine gene copy number","authors":"P. Solomon, Simon V. S. Ipcho, James K. Hane, K. Tan, R. Oliver","doi":"10.4148/1941-4765.1082","DOIUrl":"https://doi.org/10.4148/1941-4765.1082","url":null,"abstract":"Here, we report on the use of quantitative PCR (qPCR) to determine gene copy number in filamentous fungi. Using the sequenced dothideomycete Stagonospora nodorum, qPCR was used to unequivocally confirm the presence of single, two and three copy regions as predicted by in silico PCR. Further validation of the technique was demonstrated by verifying the copy numbers of introduced gene cassettes in previously characterised transformants of S. nodorum. Apart from increased sensitivity, this technique offers a high-throughput alternative to Southern blots for determining gene copy number, a","PeriodicalId":12490,"journal":{"name":"Fungal Genetics Reports","volume":"13 1","pages":"5-8"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75437340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}