Paenibacillus polymyxa J2‐4 induces cucumber to enrich rhizospheric Pseudomonas and contributes to Meloidogyne incognita management under field conditions DOI
Qianqian Shi, Qi Fu, Zhang Jie

et al.

Pest Management Science, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 25, 2024

Abstract BACKGROUND Root knot nematodes (RKNs) pose a great threat to agricultural production worldwide. The bacterial nematocides have received increasing attention due their safe and efficient control against RKNs. Here, we investigated the biocontrol efficacy of Paenibacillus polymyxa J2‐4 Meloidogyne incognita in field analyzed rhizosphere microbiome cucumber under nematode infection after application strain. Furthermore, biomarker strain Pseudomonas spp. was isolated from J2‐4‐inoculated soil, its nematocidal activity growth‐promoting effect on host plants were determined. In addition, chemotaxis assay P. fluroescens ZJ5 toward root exudates carried out. RESULTS experiment demonstrated that could effectively suppressed gall formation plants, with galling index reduced by 67.63% 2022 65.50% 2023, respectively, compared controls. Meanwhile, plant height yield significantly increased treated Metagenomic analysis indicated altered microbial communities. relative abundance notably enhanced group, which consistent Linear discriminant Effect Size results determined as one biomarkers group. strain, strains, soil identified fluorescens. fluorescens exhibited high nematicidal vitro vivo , 99.20% mortality rate M. at 24 h 69.75% reduction. efficiency synthetic community plus superior any other single bacteria . Additionally, ability inoculated J2‐4. CONCLUSION has good potential biological conditions. Enrichment beneficial contributes management. © 2024 Society Chemical Industry.

Language: Английский

Trade-Off Between Enzymatic Antioxidant Defense and Accumulation of Organic Metabolite Affects Salt Tolerance of White Clover Associated with Redox, Water, and Metabolic Homeostases DOI Creative Commons
Min Zhou, Yuting Wu, Yuchen Yang

et al.

Plants, Journal Year: 2025, Volume and Issue: 14(2), P. 145 - 145

Published: Jan. 7, 2025

White clover (Trifolium repens) is an excellent perennial cold-season ground-cover plant for municipal landscaping and urban greening. It is, therefore, widely distributed utilized throughout the world. However, poor salt tolerance greatly limits its promotion application. This study aims to investigate difference in mechanism of relation osmotic adjustment, enzymatic nonenzymatic antioxidant defenses, organic metabolites remodeling between salt-tolerant PI237292 (Trp004) salt-sensitive Korla (KL). Results demonstrated that stress significantly induced chlorophyll loss, water imbalance, accumulations malondialdehyde (MDA), hydrogen peroxide (H2O2), superoxide anion (O2.-), resulting reduced cell membrane stability two types white clovers. Trp004 maintained higher leaf relative content as well lower potential oxidative damage, compared with KL under stress. Although exhibited activities dismutase, peroxidase, catalase, ascorbate monodehydroasorbate reductase, dehydroascorbate glutathione reductase than response stress, ascorbic acid (ASA), dehydroascorbic (DHA), (GSH), disulfide (GSSG), ASA/DHA, GSH/GSSG were detected Trp004. These findings indicated a trade-off relationship enzymes antioxidants different genotypes adapting In addition, accumulated more acids (glycolic acid, succinic fumaric malic linolenic cis-sinapic acid), amino (serine, l-allothreonine, 4-aminobutyric sugars (tagatose, fructose, glucoheptose, cellobiose, melezitose), other (myo-inositol, arabitol, galactinol, cellobiotol, stigmasterol) when they suffered from same concentration duration helped maintain energy supply, reactive oxygen species homeostasis, cellular metabolic homeostasis regard can be used resource cultivating salinized soils.

Language: Английский

Citations

1
Composite microbial agent improves cotton yield and resource use efficiency under mild salt stress by optimizing plant resource allocation DOI Creative Commons

Xiao Guang Zhao,

Panpan Guo, Wu Xiong

et al.

Agricultural Water Management, Journal Year: 2025, Volume and Issue: 310, P. 109358 - 109358

Published: Feb. 11, 2025

Language: Английский

Citations

0
The isolation, identification, whole-genome sequencing of Trichoderma brevicompactum TB2 and its effects on plant growth-promotion DOI
Li Hao,

Zuohereguli Kuerban,

Rou Jiang

et al.

Plant and Soil, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

Language: Английский

Citations

0
Transcriptomic Profiling Reveals Key Gene in Trichoderma guizhouense NJAU4742 Enhancing Tomato Tolerance Under Saline Conditions DOI Creative Commons

Huiling Mei,

Tuo Li,

Haiyan Wu

et al.

Agriculture, Journal Year: 2025, Volume and Issue: 15(6), P. 610 - 610

Published: March 13, 2025

Soil salinity stress inhibits the growth of most beneficial soil fungi, thereby adversely affecting crop growth, though underlying mechanisms remain poorly understood. Our study revealed that fungus Trichoderma guizhouense NJAU4742 exhibited limited salt tolerance, with its being significantly suppressed under elevated salinity. To investigate physiological, biochemical, and molecular responses to subsequent effects on tomato we subjected X-ray irradiation, aiming obtain mutants altered tolerance. A forward mutant strain (designated M15) displaying near-complete loss tolerance was successfully isolated. Comparative transcriptomic analysis between wild type (wt) M15 identified gene Tgmfs, a stress-responsive belonging major facilitator superfamily. By constructing Tgmfs knockout (Tgmfs-KO) overexpression (Tgmfs-OE) strains, observed deletion caused intracellular Na+ accumulation in NJAU4742, prompting compensatory upregulation Na+/K+-ATPase activity maintain ion homeostasis. Concurrently, induced reactive oxygen species oxidative fungal cells, which counteracted by enhanced superoxide dismutase an NAD+/NADH ratio, collectively boosting antioxidant defenses. Pot experiments demonstrated application Tgmfs-OE or wt spore suspensions markedly improved treatment showing superior efficacy. This advances our understanding filamentous adaptation their synergistic plant resilience.

Language: Английский

Citations

0
Early inoculation and bacterial community assembly in plants: A review DOI

Xing Wang,

Yuyi Li, Christopher Rensing

et al.

Microbiological Research, Journal Year: 2025, Volume and Issue: unknown, P. 128141 - 128141

Published: March 1, 2025

Language: Английский

Citations

0
Alleviation of saline stress by the bio-priming of cotton ( Gossypium hirsutum ) seeds with prominent indigenous bacterial isolates under axenic conditions DOI
Jagjot Kaur, Gulab Pandove

Journal of Plant Nutrition, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 17

Published: April 24, 2025

Language: Английский

Citations

0
Paenibacillus polymyxa J2‐4 induces cucumber to enrich rhizospheric Pseudomonas and contributes to Meloidogyne incognita management under field conditions DOI
Qianqian Shi, Qi Fu, Zhang Jie

et al.

Pest Management Science, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 25, 2024

Abstract BACKGROUND Root knot nematodes (RKNs) pose a great threat to agricultural production worldwide. The bacterial nematocides have received increasing attention due their safe and efficient control against RKNs. Here, we investigated the biocontrol efficacy of Paenibacillus polymyxa J2‐4 Meloidogyne incognita in field analyzed rhizosphere microbiome cucumber under nematode infection after application strain. Furthermore, biomarker strain Pseudomonas spp. was isolated from J2‐4‐inoculated soil, its nematocidal activity growth‐promoting effect on host plants were determined. In addition, chemotaxis assay P. fluroescens ZJ5 toward root exudates carried out. RESULTS experiment demonstrated that could effectively suppressed gall formation plants, with galling index reduced by 67.63% 2022 65.50% 2023, respectively, compared controls. Meanwhile, plant height yield significantly increased treated Metagenomic analysis indicated altered microbial communities. relative abundance notably enhanced group, which consistent Linear discriminant Effect Size results determined as one biomarkers group. strain, strains, soil identified fluorescens. fluorescens exhibited high nematicidal vitro vivo , 99.20% mortality rate M. at 24 h 69.75% reduction. efficiency synthetic community plus superior any other single bacteria . Additionally, ability inoculated J2‐4. CONCLUSION has good potential biological conditions. Enrichment beneficial contributes management. © 2024 Society Chemical Industry.

Language: Английский

Citations

0