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Soil Microorganisms and Plant Growth

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Environmental Sustainability and Applications".

Deadline for manuscript submissions: closed (1 June 2022) | Viewed by 6254

Special Issue Editors

College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
Interests: soil microbiome; microbial ecology; protist–microbiome interaction; plant health

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Guest Editor
College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
Interests: plant–microbe interactions; development of bio-organic fertilizers
College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
Interests: plant–microbe interactions; synthetic microbial consortia; plant growth-promoting rhizobacteria; Bacillus
Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
Interests: plant–virus interaction; plant pathology; plant disease control

Special Issue Information

Dear Colleagues,

Plant performance plays crucial roles in sustaining the increasing food demands of the growing human population. Chemical-based fertilizers and pesticides are widely used in agricultural systems to enhance plant performance, i.e., promoting crop production and controlling soil-borne diseases. However, the overuse of chemical fertilizers and pesticides has negative effects on ecosystem services. Soil microorganisms including rhizosphere microorganisms play key roles in plant growth promotion and disease suppression, which are fundamental to sustainable agriculture. Understanding the roles of soil microorganisms and their interactions with host plants is important for developing helpful microbe products to reduce pesticide and fertilizer inputs in sustainable agriculture. However, most soil microorganism research linking with plant performance has particularly focused on single microbial components of bacterial or fungal communities. It remains largely unclear how other soil microorganisms, for example, viruses, unicellular eukaryotes (for example, predatory protists), and even soil small animal nematodes, contribute to plant performance. With this Special Issue titled “Soil Microorganisms and Plant Performance”, we aim to 1) increase our understanding of how all microorganisms (in addition to single microbial components) and their functionalities influence plant performance in sustainable agriculture; 2) decipher how microbial interactions within the diverse soil microbiomes determine plant performances, for example, interactions between microbiome predators and microbiomes, or bacteriophages interacting with plant-associated microbiomes; and 3) seek research of new microbial species (not limited to bacteria, fungi, viruses, and protists) with innovative mechanisms to enhance plant performance, and how the applications of those new microbial species affect soil microbial communities and ecosystem services. Not being limited to the above topics, other topics of research concerning soil microorganisms and plant performance in sustainable agriculture are also welcome.

Dr. Wu Xiong
Dr. Nan Zhang
Dr. Zhihui Xu
Dr. Jia Li
Guest Editors

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Keywords

  • soil microorganisms
  • microbiome
  • whole microbial communities
  • microbial ecology
  • viruses
  • protists
  • microbial interaction
  • soil function
  • plant performance
  • sustainable agriculture

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Published Papers (2 papers)

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Research

14 pages, 2780 KiB  
Article
Alfalfa Cover Crops Influence the Soil Fungal Community and Function in Apple Orchards in Arid Desert Oases in Northwest China
by Zhenlei Wang, Weiliang Zhao and Linqiao Xi
Sustainability 2022, 14(19), 11816; https://doi.org/10.3390/su141911816 - 20 Sep 2022
Cited by 5 | Viewed by 2014
Abstract
The present study investigated the effects of alfalfa cover crops on soil fungal communities and function in apple orchards in arid desert oases. A five-year apple orchard was subjected to two treatments: Intercropping with an alfalfa cover crop (A) and clean tillage (QG). [...] Read more.
The present study investigated the effects of alfalfa cover crops on soil fungal communities and function in apple orchards in arid desert oases. A five-year apple orchard was subjected to two treatments: Intercropping with an alfalfa cover crop (A) and clean tillage (QG). The soil fungal ITS (internal transcribed spacer) region was analyzed using Illumina MiSeq high-throughput sequencing technology, and fungal function was determined using FUNGuild. Changes in the fungal community structure, diversity, and metabolic function in the 0–60 cm soil layer of the apple orchard were compared. The results showed that the alfalfa cover crops enhanced fungal richness but reduced diversity. The alfalfa cover crops improved fungal copy numbers but reduced the relative abundance of the dominant phylum, Ascomycota. Correlations between soil fungi and soil factors revealed that total nitrogen and total carbon were the most important nutrient factors in positively regulating the fungal community. The main negative factors were soil total salts and pH. The FUNGuild functional prediction showed that Ectomycorrhizal-Wood Saprotroph and Endophyte-Undefined Saprotroph only appeared in the alfalfa cover crops. The abundance of endophytes was enhanced (p < 0.05), but the abundance of plant pathogens and wood saprotrophs decreased (p < 0.01). Alfalfa cover crops could increase the copy numbers and richness in arid oasis apple orchards. Full article
(This article belongs to the Special Issue Soil Microorganisms and Plant Growth)
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12 pages, 2200 KiB  
Article
Effect of Fertilizer Application on Watermelon Growth, Structure of Dissolved Organic Matter and Microbial Functional Diversity in Organic Substrates
by Xiuchao Song, Qiujun Wang, Jia Luo, Dejie Guo and Yan Ma
Sustainability 2022, 14(12), 6951; https://doi.org/10.3390/su14126951 - 7 Jun 2022
Viewed by 2856
Abstract
Dissolved organic matter (DOM) is the immediate energy, carbon, and other nutrient substrates for microbial growth and, therefore, plays an essential role in agroecosystem biochemical processes. The aim of this study was to elucidate the interrelationships among watermelon growth, DOM chemical characteristics, nutrient [...] Read more.
Dissolved organic matter (DOM) is the immediate energy, carbon, and other nutrient substrates for microbial growth and, therefore, plays an essential role in agroecosystem biochemical processes. The aim of this study was to elucidate the interrelationships among watermelon growth, DOM chemical characteristics, nutrient content, and microbial functional diversity in organic soilless growing substrates. We analyzed the effect of no fertilizer application (CK), PK fertilizer application (PK), and NPK fertilizer application (NPK) on fruit yield of watermelon, DOM chemical structure, nutrient status, and microbial functional diversity in organic substrates cultivated with watermelon. Compared with the CK, the NPK treatment resulted in a significantly lower fruit yield of watermelon, lower DOC concentration, significantly higher DON concentration, and higher NO3-N concentration. The application of NPK chemical fertilizer in substrates decreased the degree of humification in DOM and microbial functional diversity compared with CK treatment. Our results demonstrate that the quality of DOM plays an important role in improving the fruit yield of watermelon and is tightly related to microbial functional diversity in organic substrates. Full article
(This article belongs to the Special Issue Soil Microorganisms and Plant Growth)
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