“Omics” Approaches for Understanding Soil Suppressiveness in Agriculture

Khatri, Shivani; Bhattacharjee, Annapurna; Sharma, Shilpi

doi:10.1007/978-981-16-0889-6_4

Cited by 3 publications

(1 citation statement)

References 62 publications

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“…Soil is the foundation of agricultural production and the microorganisms therein are considered to be key determinants of crop growth and health. Disease‐suppressive soils are the hallmark of how soil microbes can benefit plant health in agroecosystems (Schroth & Hancock, 1982; Rosenzweig et al ., 2012; Gómez Expósito et al ., 2017; Topalović et al ., 2020; Khatri et al ., 2021). Among them, Pseudomonas is well‐known for its role in take‐all decline soils owing to 2,4‐diacetylphloroglucinol production (Shen et al ., 2015).…”

Section: Discussionmentioning

confidence: 99%

Deciphering the mechanism of fungal pathogen‐induced disease‐suppressive soil

et al. 2023

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One model of a disease-suppressive soil predicts that the confrontation of plant with a phytopathogen can lead to the recruitment and accumulation of beneficial microorganisms. However, more information needs to be deciphered regarding which beneficial microbes become enriched, and how the disease suppression is achieved.Here, we conditioned soil by continuously growing eight generations of cucumber inoculated with Fusarium oxysporum f.sp. cucumerinum in a split-root system.Disease incidence was found to decrease gradually upon pathogen infection accompanied with higher quantity of reactive oxygen species (ROS mainly OH • ) in roots and accumulation of Bacillus and Sphingomonas. These key microbes were proven to protect the cucumber from pathogen infection by inducing high ROS level in the roots through enrichment of pathways, including a two-component system, a bacterial secretion system, and flagellar assembly revealed by metagenomics sequencing. Untargeted metabolomics analysis combined with in vitro application assays suggested that threonic acid and lysine were pivotal to recruit Bacillus and Sphingomonas.Collectively, our study deciphered a 'cry for help' case, wherein cucumber releases particular compounds to enrich beneficial microbes that raise the ROS level of host to prevent pathogen attack. More importantly, this may be one of the fundamental mechanisms underpinning disease-suppressive soil formation.

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Section: Discussionmentioning

confidence: 99%

Deciphering the mechanism of fungal pathogen‐induced disease‐suppressive soil

et al. 2023

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Delineating the soil physicochemical and microbiological factors conferring disease suppression in organic farms

Chaudhary,

Bhattacharjee,

Khatri

et al. 2024

Microbiological Research

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Biological Disease Control by Beneficial (Micro)Organisms: Selected Breakthroughs in the Past 50 Years

Sarrocco

2023

Phytopathology®

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Biological control of plant disease by beneficial (micro)organisms is one of the main tools available to preserve plant health within the wider context of One Health and in line with the goals of the Agenda 2030 for Sustainable Development. The commercial development of biocontrol agents, together with a new perspective on the resident microbial community, all supported by innovative “omics” technologies, continues to gain in prominence in plant pathology, addressing the need to feed the increasing world population and to assure a safe and secure access to food. The present review considers selected advances within the last 50 years, highlighting those that can be considered as breakthroughs for the biological control research field. Selected examples of successful biocontrol agents and strategies are reported, including the history of the progress in researching Trichoderma isolates as commercial biocontrol agents, the exploitation of mycoviruses to confer hypovirulence to plant pathogenic fungi, the role of microbial communities in the suppressiveness of soils, and evolving approaches including the establishment of Synthetic Microbial Communities (SynCom).

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“Omics” Approaches for Understanding Soil Suppressiveness in Agriculture

Cited by 3 publications

References 62 publications

Deciphering the mechanism of fungal pathogen‐induced disease‐suppressive soil

Deciphering the mechanism of fungal pathogen‐induced disease‐suppressive soil

Delineating the soil physicochemical and microbiological factors conferring disease suppression in organic farms

Biological Disease Control by Beneficial (Micro)Organisms: Selected Breakthroughs in the Past 50 Years

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