两种豇豆Rubisco激活酶异构体对作物耐热性的影响

IF 8.3 1区生物学 Q1 PLANT SCIENCES

New Phytologist Pub Date : 2025-06-08 DOI:10.1111/nph.70271

Armida Gjindali, Rhiannon Page, Catherine J. Ashton, Ingrid Robertson, Mike T. Page, Duncan Bloemers, Peter D. Gould, Dawn Worrall, Douglas J. Orr, Elizabete Carmo-Silva

引用次数: 0

摘要

作为撒哈拉以南非洲地区的重要作物，豇豆的产量正受到气候变化的威胁，包括热浪强度、持续时间和频率的增加。Rubisco激活酶（Rca）是维持Rubisco活性的关键分子伴侣，由于其热敏感性，是提高作物气候适应能力的关键靶点。我们在体外鉴定并表征了Vigna unguiculata cv IT97K‐499‐35的4种Rca亚型：Rca1β、Rca8α、Rca10α和Rca10β。在5天+10°C的高温下，研究了豇豆叶片和植株的生长性状，包括叶片提取物中Rubisco和Rca活性的评估以及四种Rca亚型丰度的相对变化。豇豆Rca10α和Rca10β具有较高的热极大值、较宽的热最优值以及较高的ATP水解率和Rubisco再激活率。在不缺水的情况下，热浪只引起轻微的影响，包括叶片温度和Rca10表达的增加，Rubisco活性和激活状态的小幅下降，以及Rca对Rubisco激活的温度响应不变。优越的Rca10α和Rca10β亚型为豇豆和其他作物的耐热性提供了前景，以应对未来更极端的热浪。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Two cowpea Rubisco activase isoforms for crop thermotolerance

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Two cowpea Rubisco activase isoforms for crop thermotolerance

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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.