Article
Plant Sciences
Cheryl Armstrong-Cho, Nimllash Thangam Sivachandra Kumar, Ramanpreet Kaur, Sabine Banniza
Summary: Chickpea fields in Saskatchewan, Canada have been experiencing major health issues since 2019, with no definite cause determined. Field surveys conducted in 2020 and 2021 showed that Fusarium redolens, F. solani, and F. avenaceum were the most prevalent pathogens associated with chickpea root rot. However, the specific cause of Fusarium wilt in chickpea (F. oxysporum f. sp. ciceris) was not detected. New pathogens, Berkeleyomyces sp. and Verticillium dahliae, were identified in some fields in 2021. Pathogenicity testing revealed that certain isolates of F. avenaceum were the most aggressive on chickpea, causing severe stunting and root rot symptoms.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Microbiology
Yaru Ding, Yulan Chen, Zhengquan Lin, Yangyang Tuo, Hongli Li, Yan Wang
Summary: The research explored the differences in microbial community structure between suppressive and root rot-conducive soil in tobacco fields. It found that suppressive soil can resist pathogen invasion by regulating soil microbial community structure, particularly fungi, and beneficial bacteria were boosted while potential pathogens were inhibited. Additionally, certain bacteria and fungi played a critical role in inhibiting root rot, especially in the mature stage.
CURRENT MICROBIOLOGY
(2021)
Article
Microbiology
Ashwani Kumar, Anamika Dubey, Muneer Ahmad Malla, Joanna Dames
Summary: Different cultivation practices and climatic conditions impact soil microbial communities and soil health. This study analyzed the rhizosphere bacterial microbiome of sweet sorghum in three different field sites in South Africa, showing significant differences in composition and structure. Cyanobacteria were the dominant group, and core-microbiome taxa were mainly from Cyanobacteria, Bacteroidetes, and Proteobacteria. Soil pH, nutrient availability, and cultivation practices played significant roles in governing bacterial community composition in the sorghum rhizosphere.
CURRENT RESEARCH IN MICROBIAL SCIENCES
(2021)
Article
Microbiology
Sebastien Renoud, Jordan Vacheron, Danis Abrouk, Claire Prigent-Combaret, Laurent Legendre, Daniel Muller, Yvan Moenne-Loccoz
Summary: Plant growth-promoting Rhizobacteria (PGPR) have beneficial effects on plant growth through various interaction mechanisms with plants or other root-associated microorganisms. This study evaluated the impact of seed inoculation with phytostimulatory PGPR Azospirillum lipoferum CRT1 on selected microbial functional groups important for maize growth in the rhizosphere. The results showed that inoculation enhanced maize growth and increased the size of functional groups. Moreover, the ecological effects were field-specific and varied with the use of the inoculant in different field sites and growth stages for diazotrophs and ACC deaminase producers.
FRONTIERS IN MICROBIOLOGY
(2022)
Review
Microbiology
Cecile Gruet, Daniel Muller, Yvan Moenne-Loccoz
Summary: This review examines the microbiome of wheat root and rhizosphere in light of pre- and post-domestication wheat history. It highlights that current research mainly focuses on the taxonomic diversity of root-associated wheat microbiota, while there is limited understanding of microbial functioning. Future studies should consider a broader range of microorganisms and compare the genetic and physiological traits of different wheat cultivars.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Microbiology
Sebastien Renoud, Danis Abrouk, Claire Prigent-Combaret, Florence Wisniewski-Dye, Laurent Legendre, Yvan Moenne-Loccoz, Daniel Muller
Summary: The impact of inoculated plant growth-promoting rhizobacteria on its host and indigenous rhizosphere microbiota varies with the inoculum level and functional groups. The reduced inoculant formulation can have different but equally effective impacts on the indigenous rhizosphere microbiota.
Article
Soil Science
Danis Abrouk, Daniel Muller
Summary: The 3-indole acetic acid produced by microorganisms in the rhizosphere regulates root growth and physiology. By developing new PCR primers, researchers were able to analyze the ppdC(+) functional group of microorganisms in environmental samples without culturing them.
APPLIED SOIL ECOLOGY
(2022)
Review
Plant Sciences
Juliana Almario, Izabela Fabianska, Georgios Saridis, Marcel Bucher
Summary: Mutualistic symbiotic associations between multicellular eukaryotes and their microbiota are driven by nutrient exchange. Alternative mycorrhizal associations may play a role in plants unable to form functional arbuscular mycorrhizal symbiosis.
Article
Microbiology
Andrea Buresova-Faitova, Jan Kopecky, Marketa Sagova-Mareckova, Lise Alonso, Florian Vautrin, Yvan Moenne-Loccoz, Veronica Rodriguez-Nava
Summary: This study compared Actinobacteria communities in four French limestone caves and found significant differences in community composition influenced by anthropogenic activities. Different caves and areas within caves exhibited distinct Actinobacteria communities, with marked differences in species richness and composition.
Article
Soil Science
Tereza Patrmanova, Iva Krizkova, Daria Rapoport, Jan Kopecky, Sarka Hrychova, Marketa Sagova-Mareckova
Summary: This study explores the application of antagonistic strains to control common scab of potatoes and demonstrates their impact on soil microbial communities and host plant nutrition. One isolate shows significant reduction in the severity of common scab, while inoculation with these isolates leads to changes in host plant nutrition.
APPLIED SOIL ECOLOGY
(2022)
Article
Agronomy
Pavel Saska, Jan Kopecky, Marek Omelka, Alois Honek, Pavla Madrova, Petra Vokurkova, Zdenka Martinkova, Hana Foffova, Tereza Patrmanova, Marketa Sagova-Mareckova
Summary: This study compared the bacterial communities associated with seeds of seven weed species after burial in soil for two years and demonstrated the relationships between these changes and seed properties as well as attractiveness for a seed predator. The results showed that seed microbiomes remained specific after burial and contained taxa characteristic for both plant endophytes and insect guts. Changes in seed consumption were partially explained by bacterial communities and seed properties.
Article
Plant Sciences
Elodie Quer, Susana Pereira, Thomas Michel, Mathieu Santonja, Thierry Gauquelin, Guillaume Simioni, Jean-Marc Ourcival, Richard Joffre, Jean-Marc Limousin, Adriane Aupic-Samain, Caroline Lecareux, Sylvie Dupouyet, Jean-Philippe Orts, Anne Bousquet-Melou, Raphael Gros, Marketa Sagova-Mareckova, Jan Kopecky, Catherine Fernandez, Virginie Baldy
Summary: In Mediterranean ecosystems, projected rainfall reduction may alter plant-soil interactions, particularly litter decomposition and home field advantage. This study found that amplified drought conditions led to changes in litter quality and metabolomes, resulting in a slowdown of litter decomposition and loss of home field advantage in Mediterranean forests.
Article
Plant Sciences
Cecile Gruet, Danis Abrouk, Andreas Boerner, Daniel Muller, Yvan Moenne-Loccoz
Summary: The genomic architecture of wheat plays a crucial role in the beneficial interactions between plants and microorganisms. The abundance and diversity of microbial functional groups and total bacterial community are significantly influenced by different wheat genomic profiles, with a particular importance of the D genome in wheat-bacteria interactions.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Biotechnology & Applied Microbiology
Irena Todorovi, Danis Abrouk, Martina Kyselkova, Celine Lavire, Marjolaine Rey, Vera Raicevic, Jelena Jovicic-Petrovic, Yvan Moenne-Loccoz, Daniel Muller
Summary: Pseudomonas strains IT-194P, IT-215P, IT-P366T, and IT-P374T were isolated from wheat rhizospheres in soils near Mionica, Serbia. Phylogenetic analysis revealed that these strains belong to two potentially new species, one closely related to P. umsongensis DSM16611T and another closely related to P. koreensis LMG21318T. Genome analysis confirmed the proposal for two novel species, named Pseudomonas serbica sp. nov. and Pseudomonas serboccidentalis sp. nov.
SYSTEMATIC AND APPLIED MICROBIOLOGY
(2023)
Review
Biotechnology & Applied Microbiology
Bartholomew Saanu Adeleke, Daniel Muller, Olubukola Oluranti Babalola
Summary: The word endosphere refers to the internal tissues of plants that contain diverse microbes capable of producing active biological products for various applications. Metagenomics has been used to study the structural diversity and functional genes of yet-to-be-cultured endophytic microbes. This review provides an overview of the concept of metagenomics in microbial endophytic studies and highlights its application in determining the functions and metabolic pathways of microbial metagenomes.
LETTERS IN APPLIED MICROBIOLOGY
(2023)