More Ecological Research Needed for Effective Biocontrol of Plant Pathogens

Xu, Xiangming; Jeger, M.J.

doi:10.1007/978-3-030-53238-3_2

Cited by 9 publications

(3 citation statements)

References 77 publications

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“…Even though the use of natural antagonists, such as bacteria and their combination with organic compounds, as biocontrol agents have arisen as a sustainable approach, the effectiveness in natural field conditions is far from theory. Therefore, further studies on the ecological aspect of microbial interactions should mainly be included in biocontrol research and development to improve the effective use of beneficial bacteria as biocontrol agents [ 105 ].…”

Section: Discussionmentioning

confidence: 99%

Holistic Approaches to Plant Stress Alleviation: A Comprehensive Review of the Role of Organic Compounds and Beneficial Bacteria in Promoting Growth and Health

Hathurusinghe,

Azizoglu,

Shin

2024

Plants

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Plants select microorganisms from the surrounding bulk soil, which act as a reservoir of microbial diversity and enrich a rhizosphere microbiome that helps in growth and stress alleviation. Plants use organic compounds that are released through root exudates to shape the rhizosphere microbiome. These organic compounds are of various spectrums and technically gear the interplay between plants and the microbial world. Although plants naturally produce organic compounds that influence the microbial world, numerous efforts have been made to boost the efficiency of the microbiome through the addition of organic compounds. Despite further crucial investigations, synergistic effects from organic compounds and beneficial bacteria combinations have been reported. In this review, we examine the relationship between organic compounds and beneficial bacteria in determining plant growth and biotic and abiotic stress alleviation. We investigate the molecular mechanism and biochemical responses of bacteria to organic compounds, and we discuss the plant growth modifications and stress alleviation done with the help of beneficial bacteria. We then exhibit the synergistic effects of both components to highlight future research directions to dwell on how microbial engineering and metagenomic approaches could be utilized to enhance the use of beneficial microbes and organic compounds.

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Section: Discussionmentioning

confidence: 99%

Holistic Approaches to Plant Stress Alleviation: A Comprehensive Review of the Role of Organic Compounds and Beneficial Bacteria in Promoting Growth and Health

Hathurusinghe,

Azizoglu,

Shin

2024

Plants

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“…All of these aspects, in addition to the fact that results obtained under controlled environments (either in vitro or in planta in the greenhouse) are already publishable in many scientific journals, discourage researchers from evaluating the actual applicability on a large scale of the endophytes studied. In the few cases where the biocontrol potential of fungal species was evaluated in the field, the causes for the lack of transferability, or at least for the inconsistency in the results, are related to the fact that fungi, and the effects they produce in plants, are highly influenced by environmental conditions (especially in epiphytes, but also in endophytes), the type of relationship with the plant host (which is also influenced by the environment) and the interactions with other microorganisms involved [ 140 ].…”

Section: Current and Future Perspectives For A Large-scale Applicationmentioning

confidence: 99%

Metabolites Produced by Fungi against Fungal Phytopathogens: Review, Implementation and Perspectives

Rodrigo

García-Latorre

Santamaría

2021

Plants

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Many fungi, especially endophytes, have been found to produce multiple benefits in their plant hosts, with many of these benefits associated with the protection of plants against fungal diseases. This fact could be used in the development of new bio-products that could gradually reduce the need for chemical fungicides, which have been associated with multiple health and environmental problems. However, the utilization of the living organism may present several issues, such as an inconsistency in the results obtained and more complicated management and application, as fungal species are highly influenced by environmental conditions, the type of relationship with the plant host and interaction with other microorganisms. These issues could be addressed by using the bioactive compounds produced by the fungus, in cases where they were responsible for positive effects, instead of the living organism. Multiple bioactive compounds produced by fungal species, especially endophytes, with antifungal properties have been previously reported in the literature. However, despite the large amount of these metabolites and their potential, extensive in-field application on a large scale has not yet been implemented. In the present review, the main aspects explaining this limited implementation are analyzed, and the present and future perspectives for its development are discussed.

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“…Also, fungi including Trichoderma BCA have been shown to reduce clubroot disease (Javed et al, 2023; Khalid et al, 2022; Ludwig‐Müller, 2016). However, the success of current biocontrol measurements for clubroot is limited in the field (Khalid et al, 2022; Xu & Jeger, 2020), especially in soils with a high P. brassicae resting spore load (Ludwig‐Müller, 2016; Peng et al, 2014). Thus, a reduction of the soil reservoir of infectious P. brassicae remains critically important in the successful management of clubroot.…”

Section: Introductionmentioning

confidence: 99%

No rest for resting spores: Can predators mitigate clubroot disease?

Schwelm

Brennan

Geisen³

2023

J of Sust Agri & Env

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The clubroot pathogen Plasmodiophora brassicae is a major and growing problem for the cultivation of Brassica crops. As conventional control disease management methods are ineffective or prohibited due to their ecological impact, and crop resistance is frequently broken, biological control of the pathogen has become a key focus for the development of sustainable agricultural systems. Here we provide a perspective review on the unexplored impact of soil microbiome predators, and their potential use as biocontrol agents, using clubroot disease as an example. We highlight several pathways by which microbiome predators can reduce clubroot in soils, including directly through predation and indirectly by inducing a clubroot-suppressive microbiome. We further discuss how some microbiome predators might, in contrast, benefit clubroot disease spread through mechanisms such as phoresy toward hosts. We highlight that gaps in knowledge need to be filled that hinder wider application of microbiome predators against P. brassicae alone, and in combination with known biocontrol agents.

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More Ecological Research Needed for Effective Biocontrol of Plant Pathogens

Cited by 9 publications

References 77 publications

Holistic Approaches to Plant Stress Alleviation: A Comprehensive Review of the Role of Organic Compounds and Beneficial Bacteria in Promoting Growth and Health

Holistic Approaches to Plant Stress Alleviation: A Comprehensive Review of the Role of Organic Compounds and Beneficial Bacteria in Promoting Growth and Health

Metabolites Produced by Fungi against Fungal Phytopathogens: Review, Implementation and Perspectives

No rest for resting spores: Can predators mitigate clubroot disease?

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