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Mechanisms of ROS-mediated interactions between Bacillus aryabhattai LAD and maize roots to promote plant growth.
Deng, Chao; Zeng, Nan; Li, Chunji; Pang, Jiahe; Zhang, Ning; Li, Bingxue.
Afiliación
  • Deng C; College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, People's Republic of China.
  • Zeng N; School of Chemistry and Life Science, Anshan Normal University, Anshan, 114007, People's Republic of China.
  • Li C; College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, People's Republic of China.
  • Pang J; College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, People's Republic of China.
  • Zhang N; Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, People's Republic of China.
  • Li B; Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, 510225, People's Republic of China.
BMC Microbiol ; 24(1): 327, 2024 Sep 06.
Article en En | MEDLINE | ID: mdl-39242527
ABSTRACT

BACKGROUND:

Plant growth-promoting rhizobacteria (PGPR), as a group of environmentally friendly bacteria growing in the rhizosphere of plants, play an important role in plant growth and development and resistance to environmental stresses. However, their limited understanding has led to the fact that their large-scale use in agriculture is still scarce, and the mechanisms by which beneficial bacteria are selected by plants and how they interact with them are still unclear.

METHOD:

In this study, we investigated the interaction between the auxin-producing strain Bacillus aryabhattai LAD and maize roots, and performed transcriptomic and metabolomic analyses of Bacillus aryabhattai LAD after treatment with maize root secretions(RS).

RESULTS:

Our results show that there is a feedback effect between the plant immune system and bacterial auxin. Bacteria activate the immune response of plant roots to produce reactive oxygen species(ROS), which in turn stimulates bacteria to synthesize IAA, and the synthesized IAA further promotes plant growth. Under the condition of co-culture with LAD, the main root length, seedling length, root surface area and root volume of maize increased by 197%, 107%, 89% and 75%, respectively. In addition, the results of transcriptome metabolome analysis showed that LAD was significantly enriched in amino acid metabolism, carbohydrate metabolism and lipid metabolism pathways after RS treatment, including 93 differentially expressed genes and 45 differentially accumulated metabolites.

CONCLUSION:

Our findings not only provide a relevant model for exploring the effects of plant-soil microbial interactions on plant defense functions and thereby promoting plant growth, but also lay a solid foundation for the future large-scale use of PGPR in agriculture for sustainable agricultural development.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bacillus / Especies Reactivas de Oxígeno / Raíces de Plantas / Zea mays / Ácidos Indolacéticos Idioma: En Revista: BMC Microbiol Asunto de la revista: MICROBIOLOGIA Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bacillus / Especies Reactivas de Oxígeno / Raíces de Plantas / Zea mays / Ácidos Indolacéticos Idioma: En Revista: BMC Microbiol Asunto de la revista: MICROBIOLOGIA Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido