合成诱导的拟南芥同源四倍体为分析具有改变的杂交频率的减数分裂突变体提供了见解。

IF 8.3 1区生物学 Q1 PLANT SCIENCES

New Phytologist Pub Date : 2023-11-03 DOI:10.1111/nph.19366

Pablo Parra-Nunez, Nadia Fernández-Jiménez, Miguel Pachon-Penalba, Eugenio Sanchez-Moran, Mónica Pradillo, Juan Luis Santos

引用次数: 0

摘要

影响杂交（CO）频率和分布的突变导致减数分裂过程中单价体的存在，从而产生非整倍体配子和不育。染色体加倍后，这些突变可能会产生不同的影响。改变的倍性和突变的结合可能有助于对减数分裂重组的机制和调控获得新的见解；然而，使用同源多倍体减数分裂突变体的研究很少。在这里，我们分析了秋水仙碱诱导的来自不同CO频率改变的拟南芥突变体的同源四倍体（colchiploids）的细胞遗传学后果。我们发现有三种类型的突变体：染色体复制后交叉频率加倍的突变体（zip4，mus81），如对照；多倍体导致交叉频率增加高于预期的突变体（asy1、mer3、hei10和mlh3）；以及由两个染色体外集合的存在产生的交叉频率的增加不到一倍的突变体（msh5，fancm）。此外，对照组染色体复制后，I类/II类CO的比例也有所不同。所获得的结果揭示了colchiploid减数分裂突变体在更好地理解植物减数分裂过程中关键蛋白的功能方面的潜力。考虑到大多数作物都是多倍体，这一点尤其重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Synthetically induced Arabidopsis thaliana autotetraploids provide insights into the analysis of meiotic mutants with altered crossover frequency

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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.