Journal ArticleDOI
Evaluation of Trichoderma harzianum strain T22 as biological control agent of Calonectria pauciramosa
Reads0
Chats0
TLDR
T. harzianum strain T22 showed good antagonist activity in reducing microsclerotia production on carnation leaf and the incidence and severity of collar and root rot on both selected hosts, which could be crucial in developing integrated pest management strategies in ornamental plant nurseries.Abstract:
The objective of this research was to evaluate Trichoderma harzianum strain T22 as a biocontrol agent of collar and root rot caused by different Calonectria pauciramosa isolates. Thus, the microsclerotia-forming ability and virulence of twenty C. pauciramosa isolates were assessed. Microsclerotia production varied partially among the isolates and dual culture with T22 on carnation leaf agar revealed isolates with both high and low microsclerotia-forming ability. Inoculation tests on red clover (Triflolium pratense) demonstrated its susceptibility to the pathogen. On red clover, the degree of virulence and T22 effects in controlling infections were highly variable among the isolates tested. A nursery trial performed on Feijoa sellowiana seedlings confirmed previous results, clearly indicating virulence variability among C. pauciramosa isolates. For three isolates tested in nursery trial, T22 effectiveness in controlling infection was inversely related to their degree of virulence. Overall, T. harzianum strain T22 showed good antagonist activity in reducing microsclerotia production on carnation leaf and the incidence and severity of collar and root rot on both selected hosts. This data could be crucial in developing integrated pest management strategies in ornamental plant nurseries.read more
Citations
More filters
Journal ArticleDOI
Is the efficacy of biological control against plant diseases likely to be more durable than that of chemical pesticides
Marc Bardin,Sakhr Ajouz,Morgane Comby,Miguel López-Ferber,Benoit Graillot,Myriam Siegwart,Philippe C. Nicot +6 more
TL;DR: The durability of a control method for plant protection is defined as the persistence of its efficacy in space and time and the potential for plant pathogens to become resistant to biological control agents is assessed.
Journal ArticleDOI
The parasitic and lethal effects of Trichoderma longibrachiatum against Heterodera avenae
TL;DR: The parasitism and inhibition of cysts through the increased extracellular chitinase activity serves as the main mechanism with which T. longibrachiatum has a great potential to be used as a biocontrol agent against H. avenae.
Journal ArticleDOI
Efficacy assessment of antifungal metabolites from Chaetomium globosum No.05, a new biocontrol agent, against Setosphaeria turcica
Guizhen Zhang,Fengting Wang,Jianchun Qin,Di Wang,Jingying Zhang,Yanhua Zhang,Shihong Zhang,Hongyu Pan +7 more
TL;DR: This is the first report of the evaluation of the inhibitory effects of C. globosum and chaetoglobosin A against S. turcica both in vitro and on detached maize leaves.
Journal ArticleDOI
Enhanced control of postharvest citrus fruit decay by means of the combined use of compatible biocontrol agents
TL;DR: The combination of Pseudomonas and Trichoderma strains could be considered as a promising mean for the control of citrus green mold decay, supporting the concept that an improved disease control is given by the combined action of the two agents.
References
More filters
Journal ArticleDOI
Myths and Dogmas of Biocontrol Changes in Perceptions Derived from Research on Trichoderma harzinum T-22.
Journal ArticleDOI
In vitro antagonism of Trichoderma species against six fungal plant pathogens.
Journal ArticleDOI
Differential expression of Trichoderma harzianum chitinases during mycoparasitism
TL;DR: The expression of the various N-acetylglucosaminidases and endochitinases during mycoparasitism was found to be regulated in a very specific and finely tuned manner that was affected by the host.