The antagonistic effect of Trichoderma harzianum on a range of seed-borne fungal pathogens of wheat (viz. Fusarium graminearum, Bipolaris sorokiniana, Aspergillus spp., and Penicillium spp.) was assessed. The potential of T. harzianum as a biocontrol agent was tested in vitro and under field conditions. Coculture of the pathogens and Trichoderma under laboratory conditions clearly showed domina...

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...

ABSTRACT Cowpea [Vigna unguiculata (L.) Walp.] is an important socioeconomic crop in Brazil, mainly the Northeast and more recently Midwest of Brazil. Charcoal rot caused by Macrophomina phaseolina (Tassi) Goid, disease semiarid regions, where edaphoclimatic conditions are favorable to development disease. The aim this study was evaluate response 100 cowpea lines two isolates M. phaseolina. exp...

Fungi Trichoderma spp. are present in nearly all soils and other habitats. Most of Trichoderma strains are efficient for control of some pathogens. Some strains induce plant native defence mechanisms. Botrytis cinerea [Pers.: Fr.] causes economic losses on a wide range of cultivated plants and stored fruits. In presented work Trichoderma asperellum [strain T1] isolated from commercial product w...

Certain species of the fungal genus Trichoderma are potent mycoparasites and are used for biological control of fungal diseases on agricultural crops. In Trichoderma, whole-genome sequencing reveal between 20 and 36 different genes encoding chitinases, hydrolytic enzymes that are involved in the mycoparasitic attack. Sequences of Trichoderma chitinase genes chi18-5, chi18-13, chi18-15 and chi18...

Trichoderma asperellum and cucumber seedlings were used as a model to study the modulation of Trichoderma gene expression during plant root colonization. Seedlings were grown in an aseptic hydroponics medium and inoculated with Trichoderma spore suspension. Proteins differentially secreted into the medium were isolated. Three major proteins of fungal origin were identified: two arabinofuranosid...

The collapse of the Fundão tailings dam Samarco mining complex in Mariana, Brazil, was largest disaster world to date with many socio-economic and environmental impacts. Soil affected by severely altered negative impacts for agriculture. We tested whether diluting organic soil would eliminate or at least attenuate ecotoxic effects on plant development performance. cultivated radish, Raphanus sa...

charcoal rot diseases of melon caused by macrophomina phaseolina is one of the most important diseases of melon occurring in regions with variable climate. reduction of yield of melon by this disease has been reported up to 100% in some of garmsar field. salinity which can cause the important trouble in plant metabolism and nutrition is present in semnan and garmsar areas. melon is susceptible ...