Potential of Streptomyces rochei G-6 for Biocontrol of Cucumber Wilt Disease and Growth Enhancement DOI Creative Commons

Chengyu Zhu,

Xin Li, Yan Gao

et al.

Journal of Fungi, Journal Year: 2024, Volume and Issue: 10(12), P. 885 - 885

Published: Dec. 20, 2024

Cucumber wilt disease, caused by Fusarium oxysporum f. sp. cucumerinum (FOC), is a major threat to cucumber production, especially in greenhouses. This study used fermentation product derived from new strain of Streptomyces rochei (G-6) investigate the potential for biocontrol disease and effect on promoting growth. In first experiment, inhibitory S. G-6 (SGFP) FOC growth was evaluated, then SGFP incidence severity, as well growth, antioxidant system, soil nutrient conversion capacity were investigated. The results showed that inhibited 85.3% antimicrobial experiment. potting rate group reached 88.7%, but it only 56.0% SGFP1 64.7% SGFP2 group, indicating efficient wilt, with being higher than SGFP2. addition, index decreased significantly (p < 0.05) both treatments, which lower pre-treatment better post-treatment reducing severity. promoted seedlings, indicated indicators related aboveground underground parts. Furthermore, activities enzymes (superoxide dismutase, peroxidase, catalase) seedlings increased after treatment malondialdehyde level decreased, reduction oxidative stress. also improved increasing urease, phosphatase, sucrase, may enhance uptake seedling. findings this suggest an effective agent against promotes regulating system environment, its application promising solution reduce production.

Language: Английский

Metabolic response of Bacillus spp. to heavy metal stress: pathway alterations and metabolite profiles DOI
Xiaowen Yang,

Xiaotong Lin,

Zhenglin Zhou

et al.

Biotechnology Letters, Journal Year: 2025, Volume and Issue: 47(3)

Published: May 5, 2025

Language: Английский

Citations

0
Production of Bacillus thuringiensis in “On Farm” Biofactories Is So Efficient Like a Commercial Product to Control Spodoptera frugiperda (Lepidoptera: Noctuidae) DOI Creative Commons
Ítalo Alves Freire, Izabela Nunes do Nascimento, Gabriela Teodoro Rocha

et al.

Agronomy, Journal Year: 2024, Volume and Issue: 14(12), P. 2776 - 2776

Published: Nov. 22, 2024

The biological control of pests and diseases in Brazilian crops has increased substantially, the large-scale multiplication microorganisms, a practice known as “On Farm”, is now being used by farmers. In this study, we aimed to produce evaluate quality Bacillus thuringiensis var. kurstaki strain HD-1 Farm” biofactories under three aeration rates (0.2, 0.5 0.8 air volume/volume medium/min) (vvm), with regard production endospores crystals, contaminants, calculate lethal concentration 50 (LC50) against Spodoptera frugiperda larvae. After 48 h, number viable spores differed significantly between 0.2 (5.75 × 107), (1.33 108) (5.40 vvm. culture media did not show enough selectivity. A significant difference was observed for LC50 calculated vvm (7.06 104), (2.07 (4.40 103), commercial product (3.79 103). results study showed that rate affects efficiency B. biofactories. addition, post-process analyses found no pathogenic contamination, reinforcing safety viability process. resulted greater statistically similar S. frugiperda.

Language: Английский

Citations

1
Potential of Streptomyces rochei G-6 for Biocontrol of Cucumber Wilt Disease and Growth Enhancement DOI Creative Commons

Chengyu Zhu,

Xin Li, Yan Gao

et al.

Journal of Fungi, Journal Year: 2024, Volume and Issue: 10(12), P. 885 - 885

Published: Dec. 20, 2024

Cucumber wilt disease, caused by Fusarium oxysporum f. sp. cucumerinum (FOC), is a major threat to cucumber production, especially in greenhouses. This study used fermentation product derived from new strain of Streptomyces rochei (G-6) investigate the potential for biocontrol disease and effect on promoting growth. In first experiment, inhibitory S. G-6 (SGFP) FOC growth was evaluated, then SGFP incidence severity, as well growth, antioxidant system, soil nutrient conversion capacity were investigated. The results showed that inhibited 85.3% antimicrobial experiment. potting rate group reached 88.7%, but it only 56.0% SGFP1 64.7% SGFP2 group, indicating efficient wilt, with being higher than SGFP2. addition, index decreased significantly (p < 0.05) both treatments, which lower pre-treatment better post-treatment reducing severity. promoted seedlings, indicated indicators related aboveground underground parts. Furthermore, activities enzymes (superoxide dismutase, peroxidase, catalase) seedlings increased after treatment malondialdehyde level decreased, reduction oxidative stress. also improved increasing urease, phosphatase, sucrase, may enhance uptake seedling. findings this suggest an effective agent against promotes regulating system environment, its application promising solution reduce production.

Language: Английский

Citations

0