September 5, 2025AgronomyOpen Access

Dose-Dependent Effects of Paecilomyces variotii Extract on Drought Resistance in Pear Trees: Plant Growth, Soil Enzyme Activities, and Root Exudates

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The application of 5 ng/mL paecilomyces variotii extract significantly promotes plant growth and drought resistance in pear trees.
Growth indicators such as shoot length and plant height increased by more than 25% under drought stress with 5 ng/mL treatment.
Soil enzyme activity and antioxidant enzyme levels were enhanced by the 5 ng/mL concentration, supporting overall plant health.
Higher concentrations (20 ng/mL) negatively impact growth and enzyme activities, indicating an optimal dosage for effectiveness.

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Observational analysis reveals improved plant growth and enzyme activity in pear trees, suggesting effective use of paecilomyces variotii extract.

Guo et al. (2025) studied this question.

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Observational analysis reveals improved plant growth and enzyme activity in pear trees, suggesting effective use of paecilomyces variotii extract.