Soil Microbial Community in Agroecosystem: Benefits and Potentials for Crop Performances

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Farming Sustainability".

Deadline for manuscript submissions: closed (20 February 2023) | Viewed by 1869

Special Issue Editors


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Guest Editor
Dipartimento Scienze Agrarie, Alimentari e Forestali, Università degli Studi di Palermo, I-90128 Palermo, Italy
Interests: nitrogen; soil

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Guest Editor
Department of Agricultural, Food and Forest Sciences, University of Palermo, Palermo, Italy
Interests: microplastic in soil; plant-microbiome interactions; plant nutrition; N cycle in agroecosystem; tillage systems

Special Issue Information

Dear Colleagues,

Soil microorganisms are involved in a large number of processes essential for agroecosystem sustainability and performance, such as the nutrient cycle, aggregate formation, and carbon sequestration, to mention a few. Plant-root-associated beneficial microbes (e.g., arbuscular mycorrhizal fungi) also play a key role in plant health and productivity by helping in the uptake of nutrients and overcoming abiotic stresses such as drought and salinity. Plant–microbe symbioses are complex interactions with the output depending on the involved organisms, both plant and microbes, and environmental conditions; however, mechanisms underlying such responses are still unclear. The occurring global changes are already markedly influencing environmental conditions, and more extreme changes are expected in the forthcoming decades (e.g., distribution and intensity of rain events, air temperature and CO2 concentration, presence of anthropogenic pollutants such as soil microplastics contamination, etc.). Therefore, expanding the knowledge around the role of the soil microbial community in  agroecosystem productivity, resilience, and sustainability in future scenarios is urgently needed.

In this Special Issue, we welcome studies exploring all the aspects related to the effects of the soil microbial community on crop performances and agroecosystem sustainability, in particular to its effects on soil biophysical properties and processes and on crop health and performances, also considering the expected future environmental scenarios.

Prof. Dr. Alfonso S. Frenda
Dr. Rosolino Ingraffia
Guest Editors

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Keywords

  • soil microbial community

  • plant–microbiome interaction and function
  • plant-beneficial microbes
  • arbuscular mycorrhizal fungi
  • plant growth promoting bacteria
  • global change
  • climate change
  • environmental stress
  • sustainable farming
  • agroecosystem service

Published Papers (1 paper)

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Research

14 pages, 2933 KiB  
Article
Nitrogen Availability Drives Mycorrhizal Effects on Wheat Growth, Nitrogen Uptake and Recovery under Salt Stress
by Dario Giambalvo, Gaetano Amato, Davide Borgia, Rosolino Ingraffia, Calogero Librici, Antonella Lo Porto, Guglielmo Puccio, Paolo Ruisi and Alfonso S. Frenda
Agronomy 2022, 12(11), 2823; https://doi.org/10.3390/agronomy12112823 - 11 Nov 2022
Cited by 5 | Viewed by 1330
Abstract
The arbuscular mycorrhizal (AM) symbiosis is generally considered effective in improving salt tolerance in plants; however, the advantages it offers can vary greatly depending on the context in which it occurs; furthermore, the mechanisms underlying these responses are still unclear. A study was [...] Read more.
The arbuscular mycorrhizal (AM) symbiosis is generally considered effective in improving salt tolerance in plants; however, the advantages it offers can vary greatly depending on the context in which it occurs; furthermore, the mechanisms underlying these responses are still unclear. A study was conducted to investigate the role of nitrogen (N) availability on the effectiveness of AM symbiosis in durum wheat (Triticum durum Desf.) plants grown under salt stress. Plants were grown in pots in the absence or in presence of salt stress (soil electrical conductivity of 1.50 and 13.00 dS m−1, respectively), with or without AM fungi inoculation (Rhizophagus irregularis and Funneliformis mosseae), varying the N dose supplied (0 or 80 mg N per pot). Results indicate that AM symbiosis can alleviate the detrimental effects of salt stress on the growth of durum wheat only when plants are grown under sufficient N availability in soil; in such conditions mycorrhizal symbiosis determined an improvement of leaf traits (leaf area, SLA, stability of plasma membranes and SPAD), N uptake, N fertilizer recovery and water use efficiency. On the contrary, when wheat plants were grown in conditions of N deficiency, the mycorrhizal symbiosis had no effect (under salt stress) or even depressive effect (under unstressed condition) on plant growth and N uptake, highlighting how, in some cases, competition for nutrients between plants and AM can arise. This study suggests that N availability in the soil can drive the effects of AM symbiosis in assisting the plant with containing saline stress. Full article
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