Inhibition effects and mechanisms of the entophytic fungus Trichoderma harzianum LH-7 from Aloe barbadensis
Wang, L.-H.; Ke, Y.; Qiang, Y.; Ma, Y.
Ying Yong Sheng Tai Xue Bao 25(4): 1130-1136
2014
ISSN/ISBN: 1001-9332 PMID: 25011309 Document Number: 678810
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.