Rhizosphere Microorganisms and Beneficial Interactions with Plants

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Soil and Plant Nutrition".

Deadline for manuscript submissions: closed (25 November 2022) | Viewed by 2189

Special Issue Editors


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Guest Editor
Didactics of Experimental Sciences, University of Salamanca, 37007 Salamanca, Spain
Interests: endophytic bacteria; rhizobia; bacterial diversity; plant–microbe interactions; bacterial plant probiotics; STEM education
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Guest Editor
Univ Lyon, Université Claude Bernard Lyon 1, CNRS, INRAe, VetAgro Sup, UMR 5557 Ecologie Microbienne, F-69622 Villeurbanne, France
Interests: bacterial genomics; functional microbiota; rhizosphere microbiota; impact of plant domestication on microbiota; plant-disease-suppressive soils
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Guest Editor
Microbiology and Genetics Department, University of Salamanca, 37007 Salamanca, Spain
Interests: host-microbe interactions; bioinformatics; microbiology; multi-OMICs; microbialecology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Since Beijerick in 1888 obtained the first pure culture of a bacterium from a legume root nodule, knowledge about the microbial world has expanded in an unthinkable way. It was discovered that plants release a considerable amount of photosynthate from their roots, modifying the physical-chemical parameters of the surrounding environment: the rhizosphere. Many soil microorganisms are attracted by root exudates and colonize the rhizosphere, influencing the development of the host plant itself, and other microorganisms are incorporated into the plant to an endophytic lifestyle forming the so-called plant microbiome, which has an essential role in the plant health and homeostasis. Some bacteria and fungi cooperate with the plant by various mechanisms, improve the mineral nutrition of the plant, synthesize phytohormones that influence the phenotypes of the plant or stimulate the ISR or the control of pathogens (competition-inhibition). These beneficial microorganisms of the rhizosphere belong to many different genera and species.

With this Special Issue of Agronomy, we seek to present recent advances in the study of these interactions, encompassing both genomic analyses of phytobeneficial microorganisms and meta-analyses that attempt to decipher the functioning of the phytobeneficial microbiome in the context of the impacts related to agricultural practices.

Dr. Martha Helena Ramírez-Bahena
Dr. Daniel Muller
Dr. Zaki Saati-Santamaría
Guest Editors

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Keywords

  • rhizosphere
  • microorganisms
  • biofertilizers
  • biocontrol
  • microbe–host interactions
  • genomes
  • microbial communities

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Published Papers (1 paper)

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Research

14 pages, 1528 KiB  
Article
Arbuscular Mycorrhizal Fungi Promote the Degradation of the Fore-Rotating Crop (Brassica napus L.) Straw, Improve the Growth of and Reduce the Cadmium and Lead Content in the Subsequent Maize
by Jianfang Guo, Jiaxin Chen, Chengxue Li, Lei Wang, Xinran Liang, Junjie Shi and Fangdong Zhan
Agronomy 2023, 13(3), 767; https://doi.org/10.3390/agronomy13030767 - 7 Mar 2023
Cited by 3 | Viewed by 1736
Abstract
Arbuscular mycorrhizal fungi (AMF) are widely present in heavy metal-polluted soils, but their effects on straw degradation and plant growth of rotated crops are poorly understood. In this study, a pot experiment was used to simulate the return of fore-rotating crop (Brassica [...] Read more.
Arbuscular mycorrhizal fungi (AMF) are widely present in heavy metal-polluted soils, but their effects on straw degradation and plant growth of rotated crops are poorly understood. In this study, a pot experiment was used to simulate the return of fore-rotating crop (Brassica napus L.) straw to farmland with a subsequent planting of maize in a lead–zinc mining area on the Yunnan Plateau, Southwest China, which included four treatments: control (CK), addition of rape straw (SR), inoculation of AMF (AMF), and both AMF inoculation and straw addition (AMF + SR). The effects of AMF on the degradation and nutrient release of the fore-rotating rape straw and the growth, mineral nutrition and the cadmium (Cd) and lead (Pb) contents of the subsequent maize were investigated. Compared with the CK treatment, AMF significantly promoted the degradation of rape straw and the release of mineral nutrients (nitrogen, phosphorus and potassium) as well as the Cd and Pb, increased the content of available nutrients in soil, and improved the mineral nutrient contents in the maize. AMF + SR significantly increased the maize height and biomass by 32–35% and decreased the available Cd and Pb contents in soil and the Cd and Pb contents in the maize by 20–30% and 18–25%, respectively. Moreover, the available Cd and Pb contents in the soil presented significant positive correlations with their contents in the maize but negative correlations with the height and biomass of the maize. Thus, AMF played an important regulatory role in the nutrient cycling and heavy metal accumulation of the crop rotation. Full article
(This article belongs to the Special Issue Rhizosphere Microorganisms and Beneficial Interactions with Plants)
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