genes in s and t subgenomes are responsible for hybrid lethality in interspecific hybrids between nicotiana tabacum and nicotiana occidentalis基因在s和t subgenomes负责混合动力之间的种间杂交杀伤力烟草和烟草occidentalis.pdfVIP

下载本文档

0
0
约6.55万字
约 9页
2017-09-01 发布于上海
举报
版权申诉

genes in s and t subgenomes are responsible for hybrid lethality in interspecific hybrids between nicotiana tabacum and nicotiana occidentalis基因在s和t subgenomes负责混合动力之间的种间杂交杀伤力烟草和烟草occidentalis.pdf

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

genes in s and t subgenomes are responsible for hybrid lethality in interspecific hybrids between nicotiana tabacum and nicotiana occidentalis基因在s和t subgenomes负责混合动力之间的种间杂交杀伤力烟草和烟草occidentalis

Genes in S and T Subgenomes Are Responsible for Hybrid Lethality in Interspecific Hybrids between Nicotiana tabacum and Nicotiana occidentalis 1 2 Takahiro Tezuka *, Wataru Marubashi 1 Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan, 2 School of Agriculture, Meiji University, Kawasaki, Kanagawa, Japan Abstract Background: Many species of Nicotiana section Suaveolentes produce inviable F1 hybrids after crossing with Nicotiana tabacum (genome constitution SSTT), a phenomenon that is often called hybrid lethality. Through crosses with monosomic lines of N. tabacum lacking a Q chromosome, we previously determined that hybrid lethality is caused by interaction between gene(s) on the Q chromosome belonging to the S subgenome of N. tabacum and gene(s) in Suaveolentes species. Here, we examined if hybrid seedlings from the cross N. occidentalis (section Suaveolentes) 6N. tabacum are inviable despite a lack of the Q chromosome. Methodology/Principal Findings: Hybrid lethality in the cross of N. occidentalis 6N. tabacum was characterized by shoots with fading color. This symptom differed from what has been previously observed in lethal crosses between many species in section Suaveolentes and N. tabacum. In crosses of monosomic N. tabacum plants lacking the Q chromosome with N. occidentalis, hybrid lethality was observed in hybrid seedlings either lacking or possessing the Q chromosome. N. occidentalis was then crossed with two progenitors of N. tabacum, N. sylvestris (SS) and N. tomentosiformis (TT), to reveal which subgenome of N. tabacum contains gene(s) responsible for hybrid lethality. Hybrid seedlings from the crosses N. occidentalis 6N. tomentosiform