The transcription factor PpRKD evokes female developmental fate in the sexual reproductive organs of Physcomitrium patens

IF 8.3 1区 生物学 Q1 PLANT SCIENCES
New Phytologist Pub Date : 2024-11-22 DOI:10.1111/nph.20262
Emiko Yoro, Seiya Suzuki, Nobuhiro Akiyoshi, Rumiko Kofuji, Keiko Sakakibara
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引用次数: 0

Abstract

Abstract Image

转录因子 PpRKD 可唤起斑鸠菊有性生殖器官的雌性发育命运。
红叶植物的有性生殖器官(其中产生受精所需的配子,即雄性花药和雌性原生质体)是由无性繁殖的单倍体配子体形成的。在双子叶植物中,如多疣马钱子(Marchantia polymorpha),已经确定了不同有性品系中性别决定区内的基因。然而,在单性红叶植物(如Physcomitrium patens)中,如何在同一配子体上指定两种性别命运仍是未知数。在这里,我们根据功能缺失的 Pprkd 突变体无原球茎以及 PpRKD 在原球茎中的特异性表达,确定了一种含 RWP-RK 结构域的转录因子 PpRKD 是雌性器官发育所需的因子。在异位诱导下,PpRKD 的表达抑制了花药的发育,并出现了类原基器官。此外,花药束内的幼嫩原基显示出典型的原基分裂模式,表明 PpRKD 赋予花药原基雌性命运。这项研究首次在陆生植物的 RKD 直向同源物中发现了性别决定的功能。考虑到最近对 RKD 家族基因在藻类中作用的阐明,这一发现将为 RKD 家族基因的分子进化背景提供一个新的框架。
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来源期刊
New Phytologist
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.
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