Bacterial non-ribosomal peptides: a sustainable approach for combatting phytopathogenic fungi in agriculture

New Zealand Journal of Botany, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 15

Published: Oct. 6, 2024

Plant diseases are the major threats to sustainable agriculture, leading yearly yield losses. Several phytopathogens such as fungi, bacteria and viruses known cause plant that affect agricultural production. To overcome this, use of toxic chemicals has increased, raising public concern due their negative impacts on human health environment. An alternative is application biological agents, which may include various bioactive compounds from microbes. Bacterial species' non-ribosomal peptides (NRPs) becoming promising alternatives synthetic fungicides antifungal activities. NRPs small usually containing special amino acids other organic biosynthesised by peptide synthetases (NRPSs). used control in fields. In this review, we highlighted NRPs' mechanisms action against key fungal pathogens like Fusarium, Alternaria, Botrytis. These disrupting cell membrane integrity, interfering with wall synthesis, inhibiting essential cellular processes. We have also addressed methods for utilising agriculture enhanced production, formulation into biocontrol agents. Overall, offer significant potential enhance crop resilience reduce losses diseases, aligning practices. However, further research collaboration needed fully realise systems.

Language: Английский

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Isolation, Antimicrobial Effect and Metabolite Analysis of Bacillus amyloliquefaciens ZJLMBA1908 against Citrus Canker Caused by Xanthomonas citri subsp. citri

Microorganisms, Journal Year: 2023, Volume and Issue: 11(12), P. 2928 - 2928

Published: Dec. 6, 2023

Citrus canker caused by Xanthomonas citri subsp. is a devastating bacterial disease with severe implications for the citrus industry. Microorganisms possessing biocontrol capabilities against X. offer highly promising strategy healthy management. In present study, broad-spectrum antagonist strain ZJLMBA1908 potent antibacterial activity was isolated from symptomatic lemon leaves, and identified as Bacillus amyloliquefaciens. Cell-free supernatant (CFS) of also exhibited remarkable antimicrobial activity, especially suppressing growth Nigrospora oryzae, inhibition rates 27.71% 63.75%, respectively. The crude extract (CE) derived CFS displayed effective citri. A preventive treatment using CE significantly reduced severity incidence in susceptible host. Additionally, maintained presence protease under wide range temperature pH treatments. Applying high-performance liquid chromatography (HPLC) to separate purify resulted discovery one anti-X. subfraction, namely CE3, which could completely inhibit Liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS) analysis revealed that CE3 mainly consisted palmitic acid, surfactin C15, phytosphingosine dihydrosphingosine. Taken together, results contribute possible mechanisms B. amyloliquefaciens ZJLMBA1908, well providing new candidate biological control agent controlling canker.

Language: Английский

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Bacterial Strategies for Improving the Yield, Quality, and Adaptability of Oil Crops

Agriculture, Journal Year: 2023, Volume and Issue: 14(1), P. 80 - 80

Published: Dec. 30, 2023

Oil crops are the second most cultivated economic crop in world after food crops, and they an important source of both edible industrial oil. The growth oil is limited by biotic abiotic stresses, which hinder their yield quality. Among all agronomic measures, plant promoting bacteria (PGPB) play a crucial role improving yield, quality, adaptability crops. In this review, we considered recent research on sources beneficial interactions with influences host plants, focus summarizing roles molecular mechanisms PGPB resisting stresses Finally, outlined current opportunities challenges microbial strategies for improvement providing theoretical basis future use inoculants these

Language: Английский

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The metabolic and physiological responses to spaceflight of a lipopeptide- producing Bacillus subtilis

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: April 8, 2024

Background The outer space is an extreme environment that has attracted continuous interest in microbial adaptation and safety, due to its high mutagenesis frequency genetic variability. To date, several studies have assessed the impact of on microbiomes microorganisms. While survival Bacillus subtilis after spaceflight well established, how phenotype metabolic function B. respond stress rarely reported. Results In this study, we performed a flight TD7 strain facilitated by launch project Xinyidai Zairen Feichuan-Shiyan Chuan, compared strains with wild-type terms their growth, morphology, biofilm formation secondary metabolism. exhibited slower higher cell density, different morphology decreased formation. Importantly, decrease lipopeptide production was observed spaceflight. Thus, used multi-omics approach uncover molecular mechanisms underlying changeable A total 14 gene clusters for metabolite biosynthesis were identified both through whole-genome sequencing, including nonribosomal peptide synthetase. comparative transcriptome revealed 997 differentially expressed genes which involved TCA cycle, fatty acid degradation, amino biosynthesis, quorum sensing systems. differential expression analysis 26 lipopeptide-related DEGs further elucidated relationship between regulation Conclusion Our study first provide new insight into behaviors, functions response This knowledge could contribute better understanding adaption mechanisms.

Language: Английский

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Effects of polypeptidin feeding on growth and intestinal flora of Apostichopus japonicus

Aquaculture Reports, Journal Year: 2024, Volume and Issue: 38, P. 102284 - 102284

Published: Aug. 3, 2024

Language: Английский

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