Numerous studies have indicated that phosphorylation is an important component of ABA signaling. Fujii et al. (pages [485–494][1]) identify two protein kinases in Arabidopsis , SNF1-RELATED PROTEIN KINASE2.2 (SnRK2.2) and SnRK2.3, that are required for the control of responses to ABA during seed
大量研究表明，磷酸化是ABA信号转导的重要组成部分。Fujii等人(page[485-494][1])在拟南芥中发现了两种蛋白激酶，SNF1-RELATED protein KINASE2.2 (SnRK2.2)和SnRK2.3，它们在种子期控制对ABA的反应
{"title":"Two Protein Kinases Required for ABA Signaling in Arabidopsis","authors":"N. Eckardt","doi":"10.1105/tpc.107.190211","DOIUrl":"https://doi.org/10.1105/tpc.107.190211","url":null,"abstract":"Numerous studies have indicated that phosphorylation is an important component of ABA signaling. Fujii et al. (pages [485–494][1]) identify two protein kinases in Arabidopsis , SNF1-RELATED PROTEIN KINASE2.2 (SnRK2.2) and SnRK2.3, that are required for the control of responses to ABA during seed","PeriodicalId":22905,"journal":{"name":"The Plant Cell Online","volume":"67 5 1","pages":"394a - 394a"},"PeriodicalIF":0.0,"publicationDate":"2007-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80577994","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}
When cells experience DNA damage, the ataxia telangiectasia–mutated (ATM) and Rad3-related (ATR) signaling kinases simultaneously activate a transient cell cycle arrest and induce DNA repair pathways, allowing cells to repair DNA before proceeding into mitosis. ATM responds specifically to double-
{"title":"Arabidopsis WEE1 Kinase Controls Cell Cycle Arrest in Response to DNA Damage","authors":"N. Eckardt","doi":"10.1105/tpc.107.190111","DOIUrl":"https://doi.org/10.1105/tpc.107.190111","url":null,"abstract":"When cells experience DNA damage, the ataxia telangiectasia–mutated (ATM) and Rad3-related (ATR) signaling kinases simultaneously activate a transient cell cycle arrest and induce DNA repair pathways, allowing cells to repair DNA before proceeding into mitosis. ATM responds specifically to double-","PeriodicalId":22905,"journal":{"name":"The Plant Cell Online","volume":"128 1","pages":"7a - 7a"},"PeriodicalIF":0.0,"publicationDate":"2007-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77398797","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 advent of online publishing has made it possible for scientific journals to bring new research to the attention of their readers faster than ever before. The Plant Cell , for instance, posts a copyedited and proofed final version of each primary research article ∼1 month, on average, after
{"title":"New Features for a New Year","authors":"Rich Jorgensen","doi":"10.1105/TPC.107.190180","DOIUrl":"https://doi.org/10.1105/TPC.107.190180","url":null,"abstract":"The advent of online publishing has made it possible for scientific journals to bring new research to the attention of their readers faster than ever before. The Plant Cell , for instance, posts a copyedited and proofed final version of each primary research article ∼1 month, on average, after","PeriodicalId":22905,"journal":{"name":"The Plant Cell Online","volume":"29 1","pages":"1 - 1"},"PeriodicalIF":0.0,"publicationDate":"2007-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78210692","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}
Stomatal development in Arabidopsis is preceded by asymmetric cell divisions, and stomatal distribution follows the one-cell spacing rule, which dictates that there is at least one pavement cell between two adjacent stomata. This reflects intercellular communication and coordination of cell fate
{"title":"A Complete MAPK Signaling Cascade That Functions in Stomatal Development and Patterning in Arabidopsis","authors":"N. Eckardt","doi":"10.1105/tpc.107.190110","DOIUrl":"https://doi.org/10.1105/tpc.107.190110","url":null,"abstract":"Stomatal development in Arabidopsis is preceded by asymmetric cell divisions, and stomatal distribution follows the one-cell spacing rule, which dictates that there is at least one pavement cell between two adjacent stomata. This reflects intercellular communication and coordination of cell fate","PeriodicalId":22905,"journal":{"name":"The Plant Cell Online","volume":"60 1","pages":"7 - 7"},"PeriodicalIF":0.0,"publicationDate":"2007-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89830800","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}
Wormit et al. (pages [3476–3490][1]) present a detailed analysis of a group of three higher-plant monosaccharide transporters in Arabidopsis named TONOPLAST MONOSACCHARIDE TRANSPORTER1 (TMT1), TMT2, and TMT3. The authors characterize the transport activity of TMT1, report on the subcellular
{"title":"A Family of Novel Monosaccharide Transporters Involved in Vacuolar Sugar Transport in Arabidopsis","authors":"N. Eckardt","doi":"10.1105/tpc.107.181211","DOIUrl":"https://doi.org/10.1105/tpc.107.181211","url":null,"abstract":"Wormit et al. (pages [3476–3490][1]) present a detailed analysis of a group of three higher-plant monosaccharide transporters in Arabidopsis named TONOPLAST MONOSACCHARIDE TRANSPORTER1 (TMT1), TMT2, and TMT3. The authors characterize the transport activity of TMT1, report on the subcellular","PeriodicalId":22905,"journal":{"name":"The Plant Cell Online","volume":"93 1 1","pages":"3353a - 3353a"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87754449","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}
How infinitesimal concentrations of a simple two-carbon gas could bring about dramatic changes in plant growth and development may have seemed to a previous generation of plant biologists like one of nature's unknowables. Now, however, ethylene signaling is understood with such clarity that it can
{"title":"The Contributions of Anthony B. Bleecker to Ethylene Signaling and Beyond","authors":"E. Spalding","doi":"10.1105/tpc.106.048991","DOIUrl":"https://doi.org/10.1105/tpc.106.048991","url":null,"abstract":"How infinitesimal concentrations of a simple two-carbon gas could bring about dramatic changes in plant growth and development may have seemed to a previous generation of plant biologists like one of nature's unknowables. Now, however, ethylene signaling is understood with such clarity that it can","PeriodicalId":22905,"journal":{"name":"The Plant Cell Online","volume":"75 1","pages":"3347 - 3349"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80406327","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}
Agrobacterium tumefaciens is a Gram-negative rod-shaped bacterium that is commonly found in the rhizosphere of many plants, where it survives on root exudates. It will infect a plant only through a wound site (which often occurs in nursery stock through transplanting and grafting and in vineyards
{"title":"A Genomic Analysis of Tumor Development and Source-Sink Relationships in Agrobacterium-Induced Crown Gall Disease in Arabidopsis","authors":"N. Eckardt","doi":"10.1105/tpc.107.050294","DOIUrl":"https://doi.org/10.1105/tpc.107.050294","url":null,"abstract":"Agrobacterium tumefaciens is a Gram-negative rod-shaped bacterium that is commonly found in the rhizosphere of many plants, where it survives on root exudates. It will infect a plant only through a wound site (which often occurs in nursery stock through transplanting and grafting and in vineyards","PeriodicalId":22905,"journal":{"name":"The Plant Cell Online","volume":"76 1","pages":"3350 - 3352"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73665410","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}
Arabidopsis contains a family of three genes ( GID1a , GID1b , and GID1c ) that encode putative gibberellin (GA) receptors. Griffiths et al. (pages [3399–3414][1]) present a thorough genetic characterization of single, double, and triple gid1 mutants of Arabidopsis that provides strong evidence
{"title":"Three Arabidopsis GID1 Genes Encode Gibberellin Receptors with Overlapping Functions","authors":"N. Eckardt","doi":"10.1105/tpc.107.181210","DOIUrl":"https://doi.org/10.1105/tpc.107.181210","url":null,"abstract":"Arabidopsis contains a family of three genes ( GID1a , GID1b , and GID1c ) that encode putative gibberellin (GA) receptors. Griffiths et al. (pages [3399–3414][1]) present a thorough genetic characterization of single, double, and triple gid1 mutants of Arabidopsis that provides strong evidence","PeriodicalId":22905,"journal":{"name":"The Plant Cell Online","volume":"26 1","pages":"3353 - 3353"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80686849","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 widely accepted endosymbiont theory of eukaryotic evolution holds that organelles arose from free-living prokaryotes (a proteobacterium and a cyanobacterium giving rise to mitochondria and chloroplasts, respectively) that were engulfed by an ancestral archaeal host cell ([Embley and Martin, 2006
{"title":"Genomic Hopscotch: Gene Transfer from Plastid to Nucleus","authors":"N. Eckardt","doi":"10.1105/tpc.106.049031","DOIUrl":"https://doi.org/10.1105/tpc.106.049031","url":null,"abstract":"The widely accepted endosymbiont theory of eukaryotic evolution holds that organelles arose from free-living prokaryotes (a proteobacterium and a cyanobacterium giving rise to mitochondria and chloroplasts, respectively) that were engulfed by an ancestral archaeal host cell ([Embley and Martin, 2006","PeriodicalId":22905,"journal":{"name":"The Plant Cell Online","volume":"50 1","pages":"2865 - 2867"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89397370","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}
Histone acetylation is an important componentofchromatin structurethataffectsgene transcription. Hyperacetylation of histones relaxes chromatin structure and is associated with transcriptional activation, whereas hypoacetylation of histones induces chromatin compaction and gene repression. Benhamed et al. (pages 2893–2903) present new information on the effects ofhistone acetylation of chromatin on light-regulated gene expression. This work firmly establishes the pivotal role of Arabidopsis GCN5 and HD1 in controlling histone acetylation levels over several light-responsive genes and makes an important contribution to our understanding oftheroleplayedbychromatin in regulating gene expression. It was previously found that the histone acetyltransferase TAF1 is required for light regulation of gene expression. In this work, the authors show that histone acetyltransferase GCN5andhistonedeacetylaseHD1arealso involved and play opposing roles that may help tofine-tuneand balancelight regulation of gene expression. Mutations of GCN5 resulted in a long hypocotyl phenotype and reduced light-induced gene expression, whereas mutations in HD1 had the opposite effect. The authors further characterize the extent and type of histone acetylation on target promoters and find that TAF1, GCN5, andHD1havedistinctandspecificeffectson histone acetylation required for light regulation of gene expression.
{"title":"Facets of Histone Acetylation Required for Light-Responsive Gene Expression","authors":"N. Eckardt","doi":"10.1105/tpc.106.181110","DOIUrl":"https://doi.org/10.1105/tpc.106.181110","url":null,"abstract":"Histone acetylation is an important componentofchromatin structurethataffectsgene transcription. Hyperacetylation of histones relaxes chromatin structure and is associated with transcriptional activation, whereas hypoacetylation of histones induces chromatin compaction and gene repression. Benhamed et al. (pages 2893–2903) present new information on the effects ofhistone acetylation of chromatin on light-regulated gene expression. This work firmly establishes the pivotal role of Arabidopsis GCN5 and HD1 in controlling histone acetylation levels over several light-responsive genes and makes an important contribution to our understanding oftheroleplayedbychromatin in regulating gene expression. It was previously found that the histone acetyltransferase TAF1 is required for light regulation of gene expression. In this work, the authors show that histone acetyltransferase GCN5andhistonedeacetylaseHD1arealso involved and play opposing roles that may help tofine-tuneand balancelight regulation of gene expression. Mutations of GCN5 resulted in a long hypocotyl phenotype and reduced light-induced gene expression, whereas mutations in HD1 had the opposite effect. The authors further characterize the extent and type of histone acetylation on target promoters and find that TAF1, GCN5, andHD1havedistinctandspecificeffectson histone acetylation required for light regulation of gene expression.","PeriodicalId":22905,"journal":{"name":"The Plant Cell Online","volume":"18 1","pages":"2868 - 2868"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86926087","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}
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