Bacterial Plant Communities: Diversity, Molecular Interactions, and Plant Growth Promotion, 3rd Edition

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Plant Microbe Interactions".

Deadline for manuscript submissions: 31 August 2024 | Viewed by 462

Special Issue Editor

Special Issue Information

Dear Colleagues,

In recent decades, based on the knowledge about plant bacterial communities, it is evident that an important bacterial diversity is present in the environment, where plants are able to model these populations. The development of next-generation sequencing (NGS) and transcriptomics techniques has allowed us to delve into bacterial diversity, contributing to a complete view of culturable and nonculturable plant-associated bacteria. It should also be noted that, in recent years, the study of bacterial populations associated with plants has allowed the identification of a high number of new species, and genome sequencing has revealed a more complete view of the metabolism and the relationship of bacteria that inhabit these environments. These bacteria will have a key role in the development of efficient agricultural strategies to achieve higher crop production and better crop adaptation to future climatic conditions. In this way, some bacteria present a high biotechnological profile due to their ability to produce a plant growth-promoting mechanism, which has a positive effect on the development and health of plants. For this reason, the integration between metagenomic and culturomic techniques is essential to achieve a global vision that allows knowing the population dynamics and their biotechnological applications in modern agriculture.

This Special Issue will focus on providing the current view of the diversity and importance of bacterial populations associated with plants through culturomic, metagenomic, and molecular approaches, the relationship between community members, their relationship with their hosts, and their importance in plant nutrition.

Dr. José David Flores-Félix
Guest Editor

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Keywords

  • rhizobacteria
  • endophytes
  • epiphytes
  • rhizosphere
  • phyllosphere
  • plant growth-promoting bacteria
  • plant microbiome
  • plant–microbe transcriptomic
  • plant–microbe interactions
  • culturomic microbiote
  • quorum sensing

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21 pages, 5907 KiB  
Article
A Comparative Analysis of Bacterial and Fungal Communities in Coastal and Inland Pecan Plantations
by Shijie Zhang, Ting Chen, Yu Chen, Shucheng Li, Wu Wang, Yuqiang Zhao and Cancan Zhu
Microorganisms 2024, 12(7), 1313; https://doi.org/10.3390/microorganisms12071313 - 27 Jun 2024
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Abstract
Pecan forests (Carya illinoinensis) are significant contributors to both food and oil production, and thrive in diverse soil environments, including coastal regions. However, the interplay between soil microbes and pecan forest health in coastal environments remains understudied. Therefore, we investigated soil [...] Read more.
Pecan forests (Carya illinoinensis) are significant contributors to both food and oil production, and thrive in diverse soil environments, including coastal regions. However, the interplay between soil microbes and pecan forest health in coastal environments remains understudied. Therefore, we investigated soil bacterial and fungal diversity in coastal (Dafeng, DF) and inland (Guomei, GM) pecan plantations using high-throughput sequencing. The results revealed a higher microbial diversity in the DF plantation than in the GM plantation, significantly influenced by pH and edaphic factors. The dominant bacterial phyla were Proteobacteria, Acidobacteriota and Bacteroidota in the DF plantation, and Acidobacteriota, Proteobacteria, and Verrucomicrobiota in the GM plantation. Bacillus, Nitrospira and UTCFX1 were significantly more abundant bacterial genera in DF soil, whereas Candidatus Udaeobacter, HSB_OF53-F07 and ADurbBin063-1 were more prevalent in GM soil. Basidiomycota dominated fungal sequences in the GM plantation, with a higher relative abundance of Ascomycota in the DF plantation. Significant differences in fungal genus composition were observed between plantations, with Scleroderma, Hebeloma, and Naucoria being more abundant in DF soil, and Clavulina, Russula, and Inocybe in GM soil. A functional analysis revealed greater carbohydrate metabolism potential in GM plantation bacteria and a higher ectomycorrhizal fungi abundance in DF soil. Significantly positive correlations were detected between certain bacterial and fungal genera and pH and total soluble salt content, suggesting their role in pecan adaptation to coastal environments and saline–alkali stress mitigation. These findings enhance our understanding of soil microbiomes in coastal pecan plantations, and are anticipated to foster ecologically sustainable agroforestry practices and contribute to coastal marshland ecosystem management. Full article
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