Related Experiment Video
Updated: Jan 28, 2026

A Visual Guide for Studying Behavioral Defenses to Pathogen Attacks in Leaf-Cutting Ants
Published on: October 12, 2018
The Fungus HL-29: A Promising Weed Pathogen with Bioherbicidal Potential and Crop Safety
Lan Yang1,2,3, Chao Peng1,2,3, Haixia Zhu1,2,3
1Academy of Agriculture and Forestry Sciences, Qinghai University, Xining 810016, China.
Abstract:
The herbicidal efficacy and crop safety of Fusarium acuminatum strain HL-29, an endophytic fungus isolated from infected Amaranthus retroflexus in Qinghai Province, were evaluated. In vitro leaf assays demonstrated its pathogenicity against four broadleaf weeds, with efficacy ranked as follows: Elsholtzia densa = Senecio vulgaris = Chenopodium album > Malva verticillata. Pot trials further confirmed that the HL-29 fermentate caused 100% disease incidence in S. vulgaris, C. album, and E. densa. Notably, the strain showed no pathogenicity toward seven major local crops, indicating excellent selectivity. Scanning electron microscopy (SEM) revealed key morphological changes during the infection process on C. album leaves. These results establish F. acuminatum HL-29 as a promising biocontrol candidate against broadleaf weeds in the Qinghai-Tibet Plateau, providing a theoretical foundation for developing alpine-adapted mycoherbicides.
Related Concept Videos
Survey Safety
Household Wiring And Electrical Safety
Potential Energy
Chemical bonds that form attractive forces between atoms also contain potential energy, called chemical energy. When a chemical reaction...
Potential Energy
Standard Electrode Potentials
Cell Potential and Free Energy
Thermodynamics is the branch of physics dealing with the relationship between heat and other forms of energy. In an electrochemical cell, chemical energy is converted into electrical energy.
Thus, a link can be predicted between cell potential, free energy change, and the equilibrium constant for the reaction. Cell potential can also be measured as the oxidant or the reducing strength, and similar acid-base strength measures are reflected in equilibrium...

