The synaptonemal complex stabilizes meiosis in allotetraploid Brassica napus and autotetraploid Arabidopsis thaliana

IF 8.1 1区生物学 Q1 PLANT SCIENCES New Phytologist Pub Date : 2025-02-18 DOI:10.1111/nph.70015

Yashi Zhang, Fei Lv, Ziyang Wan, Miaowei Geng, Lei Chu, Bowei Cai, Jixin Zhuang, Xianhong Ge, Arp Schnittger, Chao Yang

引用次数: 0

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突触复合体稳定异源四倍体甘蓝型和同源四倍体拟南芥的减数分裂

多倍体在基因组进化和作物改良中起着关键作用。在多倍体减数分裂过程中，二价体的形成而不是多价体的形成对于保证减数分裂的稳定性和物种的最佳育性是必不可少的。然而，多倍体中防止多价重组的机制仍然不清楚。通过突变异源四倍体甘蓝型油菜和同源四倍体拟南芥的横丝成分ZYP1，研究了突触复合体在多倍体减数分裂中的作用。在甘蓝型油菜中，所有四个ZYP1拷贝的突变导致多价配对，伴随着配对伴侣切换、非同源重组和互锁，导致严重的染色体纠缠和生育流产。只有一个ZYP1功能等位基因的存在会损害突触，而多价结合发生在非突触区域。此外，ZYP1的破坏导致合成的同源四倍体拟南芥厚线细胞从主要的多价配对完全转变为完全的多价配对。我们得出结论，ZYP1介导的突触复合体组装促进了异源多倍体和自多倍体物种的同源配对和重组，并在多倍体减数分裂中确保二倍体样二价形成中起关键作用。

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来源期刊

New Phytologist 生物-植物科学

自引率

5.30%

发文量

728

期刊介绍： New Phytologist is an international electronic journal published 24 times a year. It is owned by the New Phytologist Foundation, a non-profit-making charitable organization dedicated to promoting plant science. The journal publishes excellent, novel, rigorous, and timely research and scholarship in plant science and its applications. The articles cover topics in five sections: Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology. These sections encompass intracellular processes, global environmental change, and encourage cross-disciplinary approaches. The journal recognizes the use of techniques from molecular and cell biology, functional genomics, modeling, and system-based approaches in plant science. Abstracting and Indexing Information for New Phytologist includes Academic Search, AgBiotech News & Information, Agroforestry Abstracts, Biochemistry & Biophysics Citation Index, Botanical Pesticides, CAB Abstracts®, Environment Index, Global Health, and Plant Breeding Abstracts, and others.