A Novel Strain Burkholderia theae GS2Y Exhibits Strong Biocontrol Potential Against Fungal Diseases in Tea Plants (Camellia sinensis)

A Novel Strain Burkholderia theae GS2Y Exhibits Strong Biocontrol Potential Against Fungal Diseases in Tea Plants (Camellia sinensis)

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Background: Tea plants (Camellia sinensis) are widely cultivated cash crops.However, fungal diseases lead to significant reductions in both the yield and quality of tea.Therefore, searching for economical, eco-friendly, and efficient biological control measures is crucial for protecting tea plants from pathogenic fungi.Methods: The confrontation assays were performed to identify the antagonistic bacteria against tea pathogenic fungi TIN SIGNS and evaluate the antifungal activity of these bacteria.Results: Here, three tea pathogenic fungi were identified: Colletotrichum siamense HT-1, Diaporthe phaseolorum HT-3, and Fusarium fujikuroi HT-4.

Notably, D.phaseolorum was the first to be reported in tea plants in China.Some tea pathogenic fungi showed a high relative abundance, suggesting a potential disease risk in tea plantations.Strain GS2Y, isolated from tea rhizosphere soil, exhibited strong antifungal activity against tea pathogenic fungi and represented a novel species within the genus Burkholderia, designated as Burkholderia theae.GS2Y could directly inhibit tea Engraved Leather Wallet_NEW pathogenic fungi by disrupting the cellular structures and protect tea plants from fungal diseases caused by C.

siamense HT-1 and D.phaseolorum HT-3.Conclusions: B.theae GS2Y might function as a potentially valuable resource for biocontrol agents, laying the foundation for the development of strategies to manage fungal diseases in tea plants.