| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2023-07-07 |
| タイトル |
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タイトル |
A CLAVATA3-like Gene Acts as a Gynoecium Suppression Function in White Campion |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Yusuke Kazama
Moe Kitoh
Taiki Kobayashi
Ishii Kotaro
Marc Krasovec
Yasuo Yasui
Tomoko Abe
Shigeyuki Kawano
Dmitry A. Filatov
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
How do separate sexes originate and evolve? Plants provide many opportunities to address this question as they have diverse mating systems and separate sexes (dioecy) that evolved many times independently. The classic ‘two-factor’ model for evolution of separate sexes proposes that males and females can evolve from hermaphrodites via the spread of male and female sterility mutations that turn hermaphrodites into females and males, respectively. This widely accepted model was inspired by early genetic work in dioecious white campion (Silene latifolia) that revealed the presence of two sex-determining factors on the Y-chromosome, though the actual genes remained unknown. Here we report identification and functional analysis of the putative sex-determining gene in S. latifolia, corresponding to the gynoecium suppression factor (GSF). We demonstrate that GSF likely corresponds to a Y-linked CLV3- like gene that is specifically expressed in early male flower buds and encodes the protein that suppresses gynoecium development in S. latifolia. Interestingly, GSFY has a dysfunctional X-linked homolog (GSFX) and their synonymous divergence (dS = 17.9%) is consistent with the age of sex chromosomes in this species. We propose that female development in S. latifolia is controlled via the WUSCHEL-CLAVATA feedback loop, with the X-linked WUSCHEL-like and Y-linked CLV3-like genes, respectively. Evolution of dioecy in the S. latifolia ancestor likely involved inclusion of ancestral GSFY into the non-recombining region on the nascent Y-chromosome and GSFX loss of function, which resulted in disbalance of the WUSCHEL CLAVATA feedback loop between the sexes and ensured gynoecium suppression in males. |
| 書誌情報 |
Molecular Biology and Evolution
巻 39,
号 10,
p. msac195,
発行日 2022-09
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| 出版者 |
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出版者 |
Oxford University Press |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0737-4038 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1093/molbev/msac195 |
