Rust Disease Changes the Abundance and Composition of Bacterial Community in Iris lactea Rhizosphere DOI Creative Commons
Haiyan Zhang, Xu Zhang

Horticulturae, Journal Year: 2024, Volume and Issue: 10(10), P. 1065 - 1065

Published: Oct. 4, 2024

The microbial community plays a vital role in root–environment interactions, which affect plant performance under biotic stress. Rust disease significantly affects growth, may also rhizosphere community. However, there is scarcity of studies investigating the rust Iris lactea widely utilized gardening and landscaping due to its versatility ornamental value, but it often susceptible landscape settings. In this study, we compared bacterial communities between bulk soil (non-cultivated control), healthy plants, plants infected with (rhizosphere-R). Results revealed significant alterations abundance composition associated infection. Specifically, rhizosphere-R samples exhibited decreased Shannon index at 1.9% relative Proteobacteria was increased 31.65%. Moreover, distinct changes β-diversity were shown samples. Notably, potentially pathogenic bacteria stress, while beneficial taxa decreased. Overall, our results show that community, emphasizes ecological implications plant–microbe interactions stress for developing targeted rhizobacterial-based biocontrol strategies.

Language: Английский

Whole-genome sequencing and secondary metabolite exploration of the novel Bacillus velezensis BN with broad-spectrum antagonistic activity against fungal plant pathogens DOI Creative Commons
Yanli Zheng, Tongtong Liu, Ziyu Wang

et al.

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 15

Published: Jan. 3, 2025

The utilization of chemical pesticides recovers 30%-40% food losses. However, their application has also triggered a series problems, including safety, environmental pollution, pesticide resistance, and incidents poisoning. Consequently, green are increasingly seen as viable alternatives to counterparts. Among these, Plant Growth-Promoting Rhizobacteria (PGPR), which found within plant rhizosphere, stand out for capacity stimulate growth. Recently, we isolated strain, BN, with broad-spectrum antimicrobial activity from the rhizosphere Lilium brownii. Identification revealed that this strain belongs species Bacillus velezensis exhibits significant inhibitory effects against various fungal pathogens. complete genome sequence B. BN consists circular chromosome length 3,929,791 bp, includes 3,747 protein-coding genes, 81 small RNAs, 27 rRNAs, 86 tRNAs. Genomic analysis 29% genes directly involved in growth, while 70% indirectly involved. In addition, 12 putative biosynthetic gene clusters were identified, responsible synthesis secondary metabolites, such non-ribosomal peptides, lanthipeptides, polyketides, siderophores, terpenes. These findings provide scientific basis development efficient agents construction biopesticide production platforms chassis cells.

Language: Английский

Citations

1
Evidence for the role of soil C/N ratio in shaping plant responses to root-knot nematode infection DOI Creative Commons
Jiafan Li, Shikai La,

Mengyuan Song

et al.

Journal of Advanced Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

0
Different concentrations of 2-Undecanone triggers repellent and nematicidal responses in Caenorhabditis elegans DOI Creative Commons
Wei Dai, Yile Zhai, Fan Yang

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 23, 2025

The compound 2-undecanone is widely distributed in the natural environment and exhibits a dual-action mechanism against nematodes. It demonstrates repellency contact toxicity both Caenorhabditis elegans Meloidogyne incognita. However, research on dual-function of remains relatively limited. In this study, using chemotaxis experiments, we found that (at concentrations 1-5 mg/mL) signal detected through AWB olfactory sensory neurons nematode, then transduced cGMP pathway to induce repellent behavior. Moreover, observed 0.06-0.08 induces intracellular calcium accumulation causes lysosomal membrane rupture. We further identified Hsp70 A V-ATPase as targets responsible for its killing effect. Furthermore, was alter sphingomyelin metabolism wild-type C. hsp-1 mutants. This alteration led decreased acid sphingomyelinase activity, reduced ceramide levels, increased levels. These results indicated has dual functions two target receptors nematodes, one neuron repelled mode can decrease nematodes' tolerance appropriately, extending efficacy duration. Understanding function action will aid devising innovative approaches managing nematode control.

Language: Английский

Citations

0
The preparation of an allyl isothiocyanate and avermectin B2 microcapsule suspension against plant root‐knot nematodes (Meloidogyne incognita) DOI
Li Hui, Chichuan Jin, Yanping Jiang

et al.

Pest Management Science, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Abstract BACKGROUND Root‐knot nematodes ( Meloidogyne incognita ) are one of the main pathogens affecting agricultural production. Conventional fumigants like methyl bromide have been phased out because environmental risks, while alternatives face challenges soil toxicity and resistance evolution. This study aims to develop a novel microencapsulated dual‐agent system combining allyl isothiocyanate (AITC) avermectin B 2 (AVB for sustainable nematode control. RESULT Bioassay results showed that AITC AVB had high against M. with median lethal concentration (LC 50 values 21.44 3.06 mg L −1 , respectively. The optimal combination at ratio 40:60 (m :m AVB2 = 14:3) exhibited significant synergy co‐toxicity coefficient 183.67. optimum formulation 5% AITC–AVB microcapsule suspension (CS) was obtained by orthogonal test. efficacy CS 82.92% in pot trials dosage kg . CONCLUSION initiated microencapsulation integrates plant extracts microbial fermentation compounds ecologically compatible management. technology addresses limitations through synergistic action, reduced load mitigated resistance. provide scalable solution next‐generation agrochemical formulations, balancing sustainability. © 2025 Society Chemical Industry.

Language: Английский

Citations

0
Antibiotic resistance genes are transferred from manure-contaminated water bodies to the gut microbiota of animals through the food chain DOI
Ce Wang,

Yuzi Song,

Jingxuan Liang

et al.

Environmental Pollution, Journal Year: 2024, Volume and Issue: 363, P. 125087 - 125087

Published: Oct. 8, 2024

Language: Английский

Citations

2
Rust Disease Changes the Abundance and Composition of Bacterial Community in Iris lactea Rhizosphere DOI Creative Commons
Haiyan Zhang, Xu Zhang

Horticulturae, Journal Year: 2024, Volume and Issue: 10(10), P. 1065 - 1065

Published: Oct. 4, 2024

The microbial community plays a vital role in root–environment interactions, which affect plant performance under biotic stress. Rust disease significantly affects growth, may also rhizosphere community. However, there is scarcity of studies investigating the rust Iris lactea widely utilized gardening and landscaping due to its versatility ornamental value, but it often susceptible landscape settings. In this study, we compared bacterial communities between bulk soil (non-cultivated control), healthy plants, plants infected with (rhizosphere-R). Results revealed significant alterations abundance composition associated infection. Specifically, rhizosphere-R samples exhibited decreased Shannon index at 1.9% relative Proteobacteria was increased 31.65%. Moreover, distinct changes β-diversity were shown samples. Notably, potentially pathogenic bacteria stress, while beneficial taxa decreased. Overall, our results show that community, emphasizes ecological implications plant–microbe interactions stress for developing targeted rhizobacterial-based biocontrol strategies.

Language: Английский

Citations

0