Molecular Communication between Plants and Plant-Growth-Promoting Microorganisms for Stress Tolerance

Khan, Naeem

doi:10.3390/microorganisms10061088

Cited by 6 publications

(7 citation statements)

References 12 publications

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“…This quorum-sensing guided virulence factor synthesis can be controlled by disturbing the QS system either by mimicking the signal molecules, which leads to competitive inhibition, or enzymatically hydrolyse the auto-inducers (N-Homoserine Lactone). In conventional approaches, various biocontrol (Vinay et al, 2016;Reshma et al, 2018;Kusale et al, 2021;Mulk et al, 2021;Nakkeeran et al, 2021;Nithyapriya et al, 2021;Sukmawati et al, 2021;Khan, 2022) substances are used to control pathogens, but repeated use of such molecules lead to the development of multidrug-resistant bacteria which would be very difficult to eradicate further. The desperate attempts require to identify novel antimicrobial agents or developing new procedures to thwart antibiotic resistance (Abdalla et al, 2020;Kapadia et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

Pseudomonas aeruginosa inhibits quorum-sensing mechanisms of soft rot pathogen Lelliottia amnigena RCE to regulate its virulence factors and biofilm formation

et al. 2022

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The quorum-sensing (QS) cascade is responsible for the colonization and phenotypic behavior of the pathogenic organism and the regulation of diverse signal molecules. The disruption of the quorum-sensing system is an effective strategy to overcome the possibility of antibiotic resistance development in the pathogen. The quorum quenching does not kill the microbes. Instead, it hinders the expression of pathogenic traits. In the present experiment, Pseudomonas aeruginosa RKC1 was used to extract the metabolites responsible for quorum-sensing inhibition in soft rot pathogen Lelliottia amnigena RCE. During the initial screening, P. aeruginosa RKC1 was found to be most promising and inhibits violacein of Chromobacterium violaceum MTCC2656 pyocyanin, swarming-swimming motility of P. aeruginosa MTCC2297. The characterization of metabolites produced by the microbes which are responsible for quorum-sensing inhibition through GC-MS is very scarce in scientific literature. The ethyl acetate extract of P. aeruginosa RKC1 inhibits biofilm formation of L. amnigena RCE while inhibiting growth at higher concentrations. The GC-MS analysis suggested that Cyclic dipeptides (CDPs) such as Cyclo (L-prolyl-L-valine), Cyclo (Pro-Leu), and Cyclo(D-phenylalanyl-L-prolyl) were predominantly found in the ethyl acetate extract of the P. aeruginosa RKC1 (93.72%). This diketopiperazine (DKPs) exhibited quorum-sensing inhibition against the pathogen in liquid media during the active growth phase and regulated diverse metabolites of the pathogen. Moreover, the metabolites data from the clear zone around wells showed a higher concentration of DKSs (9.66%) compared to other metabolites. So far, very few reports indicate the role of DKPs or CDPs in inhibiting the quorum-sensing system in plant pathogenic bacteria. This is one such report that exploits metabolites of P. aeruginosa RKC1. The present investigation provided evidence to use quorum-sensing inhibitor metabolites, to suppress microbes' pathogenesis and thus develop an innovative strategy to overcome antibiotic resistance.

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Section: Discussionmentioning

confidence: 99%

Pseudomonas aeruginosa inhibits quorum-sensing mechanisms of soft rot pathogen Lelliottia amnigena RCE to regulate its virulence factors and biofilm formation

et al. 2022

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“…The repercussions of climate change have been growing, which has resulted in a sharp rise in drought in recent years. In addition to being an issue, soil salinity is also a result of global warming, especially for crops that require sufficient irrigation ( Khan, 2022 ). Some farmlands are under-irrigated, resulting in salt accumulation inside the soil due to insufficient water supply in many areas.…”

Section: Interactive Effects Of Drought and Salt Stressmentioning

confidence: 99%

“…At the same time, drought is described in the percent (%) field capacity of soil moisture content which can be defined as the amount of water available in the soil. Excessive salt levels are currently thought to have a detrimental impact on 20% of the world’s agricultural land used to cultivate irrigated crops ( Khan, 2022 ). Drought and salinity stress significantly impact future agricultural production, which frequently co-occurs due to changes in climate and the struggle for water, land, and energy ( Morari et al, 2015 ; Mitra et al, 2021 ; Khan, 2022 ).…”

Section: Interactive Effects Of Drought and Salt Stressmentioning

confidence: 99%

“…Excessive salt levels are currently thought to have a detrimental impact on 20% of the world’s agricultural land used to cultivate irrigated crops ( Khan, 2022 ). Drought and salinity stress significantly impact future agricultural production, which frequently co-occurs due to changes in climate and the struggle for water, land, and energy ( Morari et al, 2015 ; Mitra et al, 2021 ; Khan, 2022 ). Drought and salt stress severely inhibit food crop growth and physiochemical activity.…”

Section: Interactive Effects Of Drought and Salt Stressmentioning

confidence: 99%

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Recent advances in PGPR-mediated resilience toward interactive effects of drought and salt stress in plants

Al-Turki,

Murali,

Omar

et al. 2023

Front. Microbiol.

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The present crisis at hand revolves around the need to enhance plant resilience to various environmental stresses, including abiotic and biotic stresses, to ensure sustainable agriculture and mitigate the impact of climate change on crop production. One such promising approach is the utilization of plant growth-promoting rhizobacteria (PGPR) to mediate plant resilience to these stresses. Plants are constantly exposed to various stress factors, such as drought, salinity, pathogens, and nutrient deficiencies, which can significantly reduce crop yield and quality. The PGPR are beneficial microbes that reside in the rhizosphere of plants and have been shown to positively influence plant growth and stress tolerance through various mechanisms, including nutrient solubilization, phytohormone production, and induction of systemic resistance. The review comprehensively examines the various mechanisms through which PGPR promotes plant resilience, including nutrient acquisition, hormonal regulation, and defense induction, focusing on recent research findings. The advancements made in the field of PGPR-mediated resilience through multi-omics approaches (viz., genomics, transcriptomics, proteomics, and metabolomics) to unravel the intricate interactions between PGPR and plants have been discussed including their molecular pathways involved in stress tolerance. Besides, the review also emphasizes the importance of continued research and implementation of PGPR-based strategies to address the pressing challenges facing global food security including commercialization of PGPR-based bio-formulations for sustainable agricultural.

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“…The identification of phytopathogens at the cell surface activates PAMP-triggered immunity (PTI), which commonly inhibits infection before the phytopathogen invades the entire plant [ 38 , 39 , 40 ].…”

Section: Microbial Communities’ Beneficial Association In the Rhizosp...mentioning

confidence: 99%

Fungi That Promote Plant Growth in the Rhizosphere Boost Crop Growth

Adedayo

Babalola

2023

JoF

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The fungi species dwelling in the rhizosphere of crop plants, revealing functions that endeavor sustainability of the plants, are commonly referred to as ‘plant-growth-promoting fungi’ (PGPF). They are biotic inducers that provide benefits and carry out important functions in agricultural sustainability. The problem encountered in the agricultural system nowadays is how to meet population demand based on crop yield and protection without putting the environment and human and animal health at risk based on crop production. PGPF including Trichoderma spp., Gliocladium virens, Penicillium digitatum, Aspergillus flavus, Actinomucor elegans, Podospora bulbillosa, Arbuscular mycorrhizal fungi, etc., have proven their ecofriendly nature to ameliorate the production of crops by improving the growth of the shoots and roots of crop plants, the germination of seeds, the production of chlorophyll for photosynthesis, and the abundant production of crops. PGPF’s potential mode of action is as follows: the mineralization of the major and minor elements required to support plants’ growth and productivity. In addition, PGPF produce phytohormones, induced resistance, and defense-related enzymes to inhibit or eradicate the invasion of pathogenic microbes, in other words, to help the plants while encountering stress. This review portrays the potential of PGPF as an effective bioagent to facilitate and promote crop production, plant growth, resistance to disease invasion, and various abiotic stresses.

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Molecular Communication between Plants and Plant-Growth-Promoting Microorganisms for Stress Tolerance

Abstract: Plant-growth-promoting microorganisms are beneficial microbes that reside in the rhizosphere and roots of plants, direct their developmental process and induce systemic resistance [...]

Cited by 6 publications

References 12 publications

Pseudomonas aeruginosa inhibits quorum-sensing mechanisms of soft rot pathogen Lelliottia amnigena RCE to regulate its virulence factors and biofilm formation

Pseudomonas aeruginosa inhibits quorum-sensing mechanisms of soft rot pathogen Lelliottia amnigena RCE to regulate its virulence factors and biofilm formation

Recent advances in PGPR-mediated resilience toward interactive effects of drought and salt stress in plants

Fungi That Promote Plant Growth in the Rhizosphere Boost Crop Growth

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