gamaensissinomonas neau‐HV1重塑IAA14‐ARF7/19相互作用促进植物生长

IF 8.3 1区生物学 Q1 PLANT SCIENCES

New Phytologist Pub Date : 2024-12-26 DOI:10.1111/nph.20370

Yansong Fu, Juexuan Wang, Ziwei Su, Qinyuan Chen, Jiaxin Li, Junwei Zhao, Wei Xuan, Youzhi Miao, Ji Zhang, Ruifu Zhang

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引用次数: 0

摘要

单胞菌通常存在于土壤或根际，并能促进植物生长。根际土壤单胞菌的富集与植物生物量的增加呈正相关。然而单胞菌调节的促生长机制尚不清楚。通过土壤系统，研究了革单胞菌NEAU - HV1对不同植物的促生长作用。通过表型分析和显微观察相结合，评估了NEAU‐HV1对根发育的影响。我们随后进行了分子和遗传学实验来揭示促进侧根（LR）发育的机制。结果表明，NEAU‐HV1能显著促进莴苣、小麦、玉米、花生和拟南芥的生长。这种效应与多种有益性状有关，包括磷酸盐增溶、吲哚- 3 -乙酸和1 -氨基环丙烷- 1 -羧酸脱氨酶的产生以及根际和根内组织的存活能力。此外，NEAU‐HV1可以通过影响生长素运输和信号传导来分泌代谢物促进LR的发展。重要的是，我们发现生长素信号的影响可能归因于孤根(SLR)/IAA14和ARF7/19之间的重塑相互作用，独立于生长素受体TIR1/AFB2发生。我们的研究结果表明，NEAU - HV1诱导的LR形成依赖于转录因子之间的直接重塑相互作用，为植物与微生物的相互作用提供了新的见解。

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Sinomonas gamaensis NEAU-HV1 remodels the IAA14-ARF7/19 interaction to promote plant growth

Sinomonas species typically reside in soils or the rhizosphere and can promote plant growth. Sinomonas enrichment in rhizospheric soils is positively correlated with increases in plant biomass. However, the growth promotion mechanisms regulated by Sinomonas remain unclear.
By using soil systems, we studied the growth-promoting effects of Sinomonas gamaensis NEAU-HV1 on various plants. Through a combination of phenotypic analyses and microscopic observations, the effects of NEAU-HV1 on root development were evaluated. We subsequently conducted molecular and genetic experiments to reveal the mechanism promoting lateral root (LR) development.
We demonstrated that NEAU-HV1 significantly promoted the growth of lettuce, wheat, maize, peanut and Arabidopsis. This effect was associated with multiple beneficial traits, including phosphate solubilization, indole-3-acetic acid and 1-aminocyclopropane-1-carboxylic acid deaminase production and survival ability in the rhizosphere and within the inner tissue of roots. In addition, NEAU-HV1 could secrete metabolites to promote LR development by affecting auxin transport and signaling. Importantly, we found that the influence of auxin signaling may be attributed to the remodeling interaction between SOLITARY-ROOT (SLR)/IAA14 and ARF7/19, occurring independently of the auxin receptor TIR1/AFB2.
Our results indicate that NEAU-HV1-induced LR formation is dependent on direct remodeling interactions between transcription factors, providing novel insights into plant–microbe interactions.

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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.