Mechanisms of biocontrol of gray mold in postharvest pear fruits using the termite symbiont Streptomyces griseus H3950
Copyright © 2025 Elsevier Masson SAS. All rights reserved.
| Publié dans: | Plant physiology and biochemistry : PPB. - 1991. - 224(2025) vom: 12. Juli, Seite 109892 |
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| Auteur principal: | |
| Autres auteurs: | , , , , , , , , , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2025
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| Accès à la collection: | Plant physiology and biochemistry : PPB |
| Sujets: | Journal Article Biocontrol Botrytis cinerea Gray mold Mechanism Pear fruits Streptomyces griseus H3950 Biological Control Agents |
| Résumé: | Copyright © 2025 Elsevier Masson SAS. All rights reserved. Gray mold in pears, caused by Botrytis cinerea, leads to severe economic losses. We investigated the biocontrol of gray mold in postharvest pear fruits using the termite symbiont Streptomyces griseus H3950 and determined that S. griseus H3950 effectively controlled postharvest gray mold in pears. The control efficiency using a total fermentation broth culture or the cell culture (hyphae) of S. griseus H3950 was 78.38 % and 77.27 %, respectively, at 2 days post inoculation. Scanning electron microscopy indicated that S. griseus H3950 competed with B. cinerea for nutrition and space. Transcriptome analysis revealed that S. griseus H3950 could significantly induce the resistance of pear fruits to B. cinerea; the expression levels of seven defense-related genes (PR, WRKY22, WRKY29, CYP98A, POD, CHI, and GLU) of pears were highly increased in S. griseus H3950 treatment, with results verified by quantitative real-time polymerase chain reaction. Moreover, S. griseus H3950 treatment enhanced the lignin content of pear fruits. The results indicated that S. griseus H3950 exerted biocontrol against gray mold through competition and inducing resistance. Additionally, S. griseus H3950 was safe in a mouse model and could effectively colonize on pear fruits. Our findings suggest that S. griseus H3950 has great potential for controlling gray mold on postharvest fruits |
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| Description: | Date Completed 23.05.2025 Date Revised 23.05.2025 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1873-2690 |
| DOI: | 10.1016/j.plaphy.2025.109892 |