Gene-rich UV sex chromosomes harbor conserved regulators of sexual development.
Gene-rich UV sex chromosomes harbor conserved regulators of sexual development.
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基因丰富的紫外线性染色体携带保守的性发育调节因子。
DOI:
10.1126/sciadv.abh2488
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发表时间:
2021-06
期刊:
影响因子:
13.6
通讯作者:
McDaniel SF
中科院分区:
文献类型:
--
作者:
Carey SB;Jenkins J;Lovell JT;Maumus F;Sreedasyam A;Payton AC;Shu S;Tiley GP;Fernandez-Pozo N;Healey A;Barry K;Chen C;Wang M;Lipzen A;Daum C;Saski CA;McBreen JC;Conrad RE;Kollar LM;Olsson S;Huttunen S;Landis JB;Burleigh JG;Wickett NJ;Johnson MG;Rensing SA;Grimwood J;Schmutz J;McDaniel SF
Moss sex chromosomes retain thousands of broadly expressed genes despite millions of years of suppressed recombination. Nonrecombining sex chromosomes, like the mammalian Y, often lose genes and accumulate transposable elements, a process termed degeneration. The correlation between suppressed recombination and degeneration is clear in animal XY systems, but the absence of recombination is confounded with other asymmetries between the X and Y. In contrast, UV sex chromosomes, like those found in bryophytes, experience symmetrical population genetic conditions. Here, we generate nearly gapless female and male chromosome-scale reference genomes of the moss Ceratodon purpureus to test for degeneration in the bryophyte UV sex chromosomes. We show that the moss sex chromosomes evolved over 300 million years ago and expanded via two chromosomal fusions. Although the sex chromosomes exhibit weaker purifying selection than autosomes, we find that suppressed recombination alone is insufficient to drive degeneration. Instead, the U and V sex chromosomes harbor thousands of broadly expressed genes, including numerous key regulators of sexual development across land plants.
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DOI:
10.1111/nph.13220
发表时间:
2015-04
期刊:
The New phytologist
影响因子:
--
作者:
Alaba S;Piszczalka P;Pietrykowska H;Pacak AM;Sierocka I;Nuc PW;Singh K;Plewka P;Sulkowska A;Jarmolowski A;Karlowski WM;Szweykowska-Kulinska Z
通讯作者:
Szweykowska-Kulinska Z
影响因子:
11.6
作者:
Endo, M;Nakamura, S;Nagatani, A
通讯作者:
Nagatani, A
DOI:
10.1098/rstb.2000.0717
发表时间:
2000-11-29
影响因子:
6.3
作者:
Charlesworth, B;Charlesworth, D
通讯作者:
Charlesworth, D
影响因子:
64.8
作者:
通讯作者:
--
影响因子:
9.2
作者:
Chibalina, Margarita V.;Filatov, Dmitry A.
通讯作者:
Filatov, Dmitry A.