Inhibition effects and mechanisms of the entophytic fungus Trichoderma harzianum LH-7 from Aloe barbadensis

Inhibition spectrum and antagonistic mechanism of an endophytic fungus Trichoderma harzianum LH-7, isolated from wild medicinal plant Aloe barbadensis, were investigated by in vitro culture methods against 9 kinds of plant pathogens. The results showed that nutrient competition and hyper-parasitism...

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Bibliographic Details
Published inYing yong sheng tai xue bao Vol. 25; no. 4; p. 1130
Main Authors Wang, Li-Heng, Ke, Yang, Qiang, Yi, Ma, Yu
Format Journal Article
LanguageChinese
Published China 01.04.2014
Subjects
Aloe - microbiology
Antibiosis
Plant Diseases
Trichoderma - physiology
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Summary:Inhibition spectrum and antagonistic mechanism of an endophytic fungus Trichoderma harzianum LH-7, isolated from wild medicinal plant Aloe barbadensis, were investigated by in vitro culture methods against 9 kinds of plant pathogens. The results showed that nutrient competition and hyper-parasitism were the two primarily antagonist approaches that strain LH-7 adopted to inhibit the tested plant pathogens with a significant inhibition rate of 62.4%-88.4%. Moreover, the active compound from metabolites of LH-7 could cause pathogen mycelial deformities, cell wall rupture and conidial malformation, leading to the effective inhibition on pathogens growth and reproduction.
ISSN:1001-9332