{"title":"Reproductive Isolation: Evidence that Ascobolus stercorarius and Ascobolus furfuraceus are two species, not one","authors":"G. Bistis","doi":"10.4148/1941-4765.1140","DOIUrl":null,"url":null,"abstract":"Strains obtained from the germination of 30-40 year old ascospores from seven stocks of the heterothallicAscobolus stercorarius furfuraceous complex were mated in all combinations. All st X st and fu X fu pairings were fertile (ascospores) whereas all st X fu pairings were sterile (no ascospores). Based on this reproductive isolation between st and fu strains I conclude that the complex consists of two species. The block that segregated the two species is probably some stage in the establishment of the dikaryotic phase in ascogenous hyphae. One hypothesis is that this block is at the stage of nuclear recognition. 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/vol51/iss1/10","PeriodicalId":12490,"journal":{"name":"Fungal Genetics Reports","volume":"25 1","pages":"23-25"},"PeriodicalIF":0.0000,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fungal Genetics Reports","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4148/1941-4765.1140","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
Strains obtained from the germination of 30-40 year old ascospores from seven stocks of the heterothallicAscobolus stercorarius furfuraceous complex were mated in all combinations. All st X st and fu X fu pairings were fertile (ascospores) whereas all st X fu pairings were sterile (no ascospores). Based on this reproductive isolation between st and fu strains I conclude that the complex consists of two species. The block that segregated the two species is probably some stage in the establishment of the dikaryotic phase in ascogenous hyphae. One hypothesis is that this block is at the stage of nuclear recognition. 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/vol51/iss1/10
从7个异菌群的30-40岁子囊孢子萌发中获得的菌株在所有组合中都进行了交配。所有st X st和fu X fu配对都是可育的(子囊孢子)，而所有st X fu配对都是不育的(无子囊孢子)。根据st和fu菌株之间的生殖隔离，我得出结论，该复合体由两个物种组成。这两个物种分离的障碍可能是在球囊菌丝的双核阶段建立的某个阶段。一种假设是，该区块处于核识别阶段。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/vol51/iss1/10
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