Competition-induced downregulation of symbiotic nitrogen fixation

IF 8.3 1区 生物学 Q1 PLANT SCIENCES New Phytologist Pub Date : 2023-10-16 DOI:10.1111/nph.19322
Rotem Dagan, Guy Dovrat, Tania Masci, Efrat Sheffer
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竞争诱导共生固氮下调。
在单个植物水平上的对照实验表明,豆类物种使用不同的策略来调节共生的二氮固定,以响应氮的可用性。这些策略被建议在植物群落的背景下提高豆类的适应性,尽管很少在这个水平上进行研究。我们评估了氮的有效性和同种与异源相互作用如何影响固氮调控策略。我们种植了两种草本豆科植物,它们代表了两种不同的无相互作用的调节策略,在缺氮和充足氮的处理下,通过同种或异源相互作用。我们发现,当氮在同特异性和异特异性相互作用下都可用时,圆尾膜壳虫保持着下调固氮的兼性策略,这在该物种单独生长时也被发现。palaestina Vicia在共异性和异性相互作用下也下调了固氮作用,但在单独生长时不调节固氮作用。我们的结果表明,在氮限制下,与邻近植物的相互作用降低了适应性,反映了竞争效应。我们的研究结果表明,当与其他植物相互作用时,固氮更有可能下调,从而降低固氮的能量成本,并提高植物在竞争生态群落中的表现,尤其是在有氮的情况下。
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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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