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Rapid and dynamic evolution of a giant Y chromosome in Silene latifolia.

  • Published In: Science (pre-March 2025), 2025, v. 387, n. 6734. P. 637 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Takashi Akagi; Naoko Fujita; Kenta Shirasawa; Hiroyuki Tanaka; Kiyotaka Nagaki; Kanae Masuda; Ayano Horiuchi; Eriko Kuwada; Kanta Kawai; Riko Kunou; Koki Nakamura; Yoko Ikeda; Atsushi Toyoda; Takehiko Itoh; Koichiro Ushijima; Charlesworth, Deborah 3 of 3

Abstract

Some plants have massive sex-linked regions. To test hypotheses about their evolution, we sequenced the genome of Silene latifolia, in which giant heteromorphic sex chromosomes were first discovered in 1923. It has long been known that the Y chromosome consists mainly of a male-specific region that does not recombine with the X chromosome and carries the sex-determining genes and genes with other male functions. However, only with a whole Y chromosome assembly can candidate genes be validated experimentally and their locations determined and related to the suppression of recombination. We describe the genomic changes as the ancestral chromosome evolved into the current XY pair, testing ideas about the evolution of large nonrecombining regions and the mechanisms that created the present recombination pattern. [ABSTRACT FROM AUTHOR]

Additional Information

  • Source:Science (pre-March 2025). 2025/02, Vol. 387, Issue 6734, p637
  • Document Type:Article
  • Subject Area:History
  • Publication Date:2025
  • ISSN:0036-8075
  • DOI:10.1126/science.adk9074
  • Accession Number:182816086
  • Copyright Statement:Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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