Related Experiment Video
Updated: Jan 30, 2026

Methods for Rearing the Parasitoid Ganaspis brasiliensis, a Promising Biological Control Agent for the Invasive Drosophila suzukii
Published on: June 2, 2022
Saccharothrix yanglingensis Strain Hhs.015 Is a Promising Biocontrol Agent on Apple Valsa Canker
Zhengpeng Li1, Xiaoning Gao1, Zhensheng Kang1
1State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling 712100, PR China.
Abstract:
Apple Valsa canker (AVC), caused by Valsa mali, results in a serious and persistent disease problem for apple production in China and is difficult to control by chemical and agricultural measures. In this study, we determined the inhibitory effects of an endophytic actinomycete Saccharothrix yanglingensis strain Hhs.015 on V. mali under laboratory and the field conditions. Fermentation broth (FB) of Hhs.015 significantly inhibited conidial germination and mycelial growth, causing malformed and dysfunctional fungal structures. Detached apple (Malus domestica 'Fuji') twigs smeared with FB before V. mali inoculation significantly reduced lesion development, especially sporulation. In the orchard trials conducted from 2010 to 2013, trunks and branches smeared with FB three times significantly reduced the number of new lesions. In addition, wounds after lesion surgery coated with FB also enhanced callus formation and significantly improved the cure rate. The results showed that S. yanglingensis Hhs.015 is effective against AVC in orchards. Thus, S. yanglingensis Hhs.015 can be further developed as an effective biocontrol agent for more sustainable management of AVC.
Related Concept Videos
Thermal Strain
Shearing Strain
Measurements of Strain
Strain Energy
Consider a rod that is fixed at one end and subjected to an axial force at the free end. This axial force induces stress within the rod, leading to its elongation. As the axial force increases, so does the elongation of the rod, illustrating a direct relationship between the force applied and the resulting...
Subviral Agents
Problem Solving on Stress and Strain

