Several proteins and peptides of microbial origin are reported for their elicitor properties, which play a vital role in the development of local and systemic resistances in plants. In this study, the efficacy of total crude proteins (TCP) extracted from six different Trichoderma spp. (T. asperellum, T. harzianum, T. atroviride, T. virens, T. longibrachiatum, and T. brevicompactum) was evaluate...

Trichoderma species are used commercially as biocontrol agents against a number of phytopathogenic fungi due to their mycoparasitic characterisitics. The mycoparasitic response is induced when Trichoderma specifically recognizes the presence of the host fungus and transduces the host-derived signals to their respective regulatory targets. We made deletion mutants of the tga3 gene of Trichoderma...

The scarcity of fresh water in the Mediterranean region necessitates the search for halotolerant agents of biological control of plant diseases that can be applied in arid-zone agriculture irrigated with saline water. Among 29 Trichoderma strains previously isolated from Mediterranean Psammocinia sp. sponges, the greatest number of isolates belong to the Trichoderma longibrachiatum-Hypocrea ori...

O cultivo da alface tem sido prejudicado por problemas fitossanitários, em especialmente o gênero Meloidogynes sp.. Na tentativa de minimizar prejuízos, busca-se práticas que sejam eficientes, baixo custo, e com reduzido impacto ambiental, tais como a utilização controle biológico. Objetivou-se avaliar potencial nematicida agentes biológicos infestação Meloidogyne para duas cultivares crespa. U...

In this study, effects of single and combined applications biocontrol agents; Trichoderma spp. (T. atroviride, T. virens) plant growth promoting rhizobacteria (Pseudomonas koreensis, Bacillus subtilis) on growth, wilt disease severity caused by Verticillium dahliae defence-related enzymes (peroxidase, polyphenol oxidase, phenylalanine ammonium lyase β-1,3 glucanase) eggplant, were investigated....

The use of medicinal plants for the treatment of various diseases is an old practice in most countries and it still offers an enormous potential source of new anti-infective agents. The present study was conducted to evaluate the antimicrobial activity of Wattakaka volubilis leaf extract. Antimicrobial activity of Wattakaka volubilis methanol extract is determined by disc diffusion method . The...

Plants are constantly exposed to microbes, for this reason they have evolved sophisticated strategies to perceive and identify biotic interactions. Thus, plants have large collections of so-called resistance (R) proteins that recognize specific microbe factors as signals of invasion. One of these proteins is codified by the Arabidopsis thaliana HR4 gene in the Col-0 ecotype that is homologous t...

Medicinal plants may become a favourable habitat for associative microorganisms, especially endophytic microbes inhabiting Zingiberaceaen species. Preliminary investigation has revealed an assemblage of fungi colonizing the healthy rhizome Elettaria sp. collected from Sibayak Forest, North Sumatra based on molecular evidences. This study investigated IAA-producing and antifungal activity Elleta...