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Listening to plant's Esperanto via root exudates: reprogramming the functional expression of plant growth-promoting rhizobacteria

文献类型： 外文期刊

作者： Feng, Haichao 1 ; Fu, Ruixin 3 ; Luo, Jiayu 1 ; Hou, Xueqin 1 ; Gao, Kun 1 ; Su, Lv 4 ; Xu, Yu 5 ; Miao, Youzhi 1 ; Liu, Yunpeng 4 ; Xu, Zhihui 1 ; Zhang, Nan 1 ; Shen, Qirong 1 ; Xun, Weibing 1 ; Zhang, Ruifu 1 ;

作者机构： 1.Nanjing Agr Univ, Jiangsu Collaborat Innovat Ctr Solid Organ Wastes, Jiangsu Prov Key Lab Solid Organ Waste Utilizat, Nanjing 210095, Peoples R China

2.Henan Univ, Coll Agr, Zhengzhou 450046, Peoples R China

3.Shangqiu Normal Univ, Sch Biol & Food, Shangqiu 476000, Peoples R China

4.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, State Key Lab Efficient Utilizat Arid & Semiarid A, Beijing 100081, Peoples R China

5.Chinese Acad Sci, Inst Genet & Dev Biol, Ctr Agr Resources Res, Hebei Key Lab Soil Ecol, 286 Huaizhong Rd, Shijiazhuang 050021, Peoples R China

关键词： plant growth-promoting rhizobacterium (PGPR); plant health; recruitment; reprogramming; root exudates

期刊名称：NEW PHYTOLOGIST （ 影响因子：9.4； 五年影响因子：10.5 ）

ISSN： 0028-646X

年卷期： 2023 年

页码：

收录情况： SCI

摘要： center dot Rhizomicrobiome plays important roles in plant growth and health, contributing to the sustainable development of agriculture. Plants recruit and assemble the rhizomicrobiome to satisfy their functional requirements, which is widely recognized as the 'cry for help' theory, but the intrinsic mechanisms are still limited. center dot In this study, we revealed a novel mechanism by which plants reprogram the functional expression of inhabited rhizobacteria, in addition to the de novo recruitment of soil microbes, to satisfy different functional requirements as plants grow. This might be an efficient and low-cost strategy and a substantial extension to the rhizomicrobiome recruitment theory. center dot We found that the plant regulated the sequential expression of genes related to biocontrol and plant growth promotion in two well-studied rhizobacteria Bacillus velezensis SQR9 and Pseudomonas protegens CHA0 through root exudate succession across the plant developmental stages. Sixteen key chemicals in root exudates were identified to significantly regulate the rhizobacterial functional gene expression by high-throughput qPCR. center dot This study not only deepens our understanding of the interaction between the plant-rhizosphere microbiome, but also provides a novel strategy to regulate and balance the different functional expression of the rhizomicrobiome to improve plant health and growth.

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