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ORIGINAL RESEARCH article

Front. Microbiol.
Sec. Microbe and Virus Interactions with Plants
Volume 15 - 2024 | doi: 10.3389/fmicb.2024.1457624
This article is part of the Research Topic Microbial-Mediated Induced Resistance: Interactive Effects for Improving Crop Health View all 9 articles

Isolation, identification, and mechanism analysis of Plant Growth Promoting Rhizobacteria in tobacco

Provisionally accepted
Chuandong Jiang Chuandong Jiang 1Fuyu Peng Fuyu Peng 2*Li Zhang Li Zhang 1Chengqiang Wang Chengqiang Wang 3*Zongpeng Zhao Zongpeng Zhao 1Yunlei Qin Yunlei Qin 1*Ran Wang Ran Wang 1*Changdai Cao Changdai Cao 4*Jiazhu Jiang Jiazhu Jiang 2*Mingfeng Yang Mingfeng Yang 2*Mingming Sun Mingming Sun 2*Long Yang Long Yang 1*qiang Zhang qiang Zhang 1*
  • 1 College of Plant Protection, Shandong Agricultural University, Tai'an, China
  • 2 Shandong China Tobacco Industry Co., Ltd,, Jinan 250104, China, Jinan, China
  • 3 College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong Province, China
  • 4 Shandong Rizhao Tobacco Co., Ltd, Rizhao 276800, China, Rizhao, China

The final, formatted version of the article will be published soon.

    Plant growth, crop yield, and pest and disease control are enhanced by PGPR (Plant growth promoting rhizobacteria), which are beneficial microorganisms found in a close symbiosis with plant roots. Phytohormones are secreted, nutrient uptake is improved, and soil properties along with the microbiological environment are regulated by these microorganisms, making them a significant focus in agricultural research. In this study, the highly efficient PGPR, Trichoderma harzianum, designated T1, was successfully isolated from tobacco inter-root soil. Following the application of T1, significant improvements were observed in the height, leaf length, and width of tobacco plants. Furthermore, the physical and chemical properties of the soil were notably enhanced, including a 26.26% increase in phosphorus availability. Additionally, the activities of key soil enzymes such as sucrase, catalase, and urease were significantly increased, indicating improved soil health and fertility. Comprehensive joint microbiomics and macrogenomics analyses revealed a substantial rise in the populations of beneficial soil microorganisms and an enhancement in metabolic pathways, including amino acid metabolism, synthesis, and production of secondary metabolites. These increase in beneficial microorganisms and the enhancement of their metabolic functions are crucial for plant growth and soil fertility. This study provides valuable references for the development of innovative microbial fertilizers and offers programs for the sustainable development of modern agriculture.

    Keywords: Growth and Development, Microbiome and metagenomic analysis, Plant growth promoting rhizobacteria, Tobacco, soil improvement

    Received: 01 Jul 2024; Accepted: 12 Aug 2024.

    Copyright: © 2024 Jiang, Peng, Zhang, Wang, Zhao, Qin, Wang, Cao, Jiang, Yang, Sun, Yang and Zhang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Fuyu Peng, Shandong China Tobacco Industry Co., Ltd,, Jinan 250104, China, Jinan, China
    Chengqiang Wang, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, Shandong Province, China
    Yunlei Qin, College of Plant Protection, Shandong Agricultural University, Tai'an, China
    Ran Wang, College of Plant Protection, Shandong Agricultural University, Tai'an, China
    Changdai Cao, Shandong Rizhao Tobacco Co., Ltd, Rizhao 276800, China, Rizhao, China
    Jiazhu Jiang, Shandong China Tobacco Industry Co., Ltd,, Jinan 250104, China, Jinan, China
    Mingfeng Yang, Shandong China Tobacco Industry Co., Ltd,, Jinan 250104, China, Jinan, China
    Mingming Sun, Shandong China Tobacco Industry Co., Ltd,, Jinan 250104, China, Jinan, China
    Long Yang, College of Plant Protection, Shandong Agricultural University, Tai'an, China
    qiang Zhang, College of Plant Protection, Shandong Agricultural University, Tai'an, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.