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Trichoderma harzianum
About: Trichoderma harzianum is a research topic. Over the lifetime, 4731 publications have been published within this topic receiving 96796 citations.
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TL;DR: ‘Chickpea wilt complex’, an important disease of chickpea, was effectively controlled by a biological agent Trichoderma harzianum and its integration with fungicides and significantly reduced the incidence and increased crop yield.
Abstract: ‘Chickpea wilt complex’, an important disease of chickpea, was effectively controlled by a biological agent Trichoderma harzianum and its integration with fungicides. Evaluation of wheat bran sawdust medium for T. harzianum showed high potentiality. Soil application with different doses of T. harzianum gave 53–50–85.70% disease control in the glasshouse, increasing with the amount of T. harzianum applied. In the field integration of T. harzianum with different fungicides significantly reduced the incidence of ‘chickpea wilt complex’ and increased crop yield. Seeds treated with Vitavax‐200 and Ziram resulted in 29.9% disease control, which was further increased to 63.3% when integrated with soil application of T. harzianum.
51 citations
TL;DR: Harzianolide, a metabolite isolated from cultures of the fungus Trichoderma harzianum, is shown by NMR methods to be 3-(2′-hydroxypropyl)-4-(hexa-2″,4″-dienyl)-2(5H)-furanone.
51 citations
TL;DR: The interaction was shown to modulate the expression of defense-related genes (Glu1, pod3 and lox1) in roots of P. vulgaris and T. harzianum was able to promote common bean plants growth as shown by the increase in root/foliar areas and by size in comparison to plants grown in its absence.
Abstract: The present study was carried out to evaluate the ability of Trichoderma harzianum (ALL 42-isolated from Brazilian Cerrado soil) to promote common bean growth and to modulate its metabolism and defense response in the presence or absence of the phytopathogenic fungi Rhizoctonia solani and Fusarium solani using a proteomic approach. T. harzianum was able to promote common bean plants growth as shown by the increase in root/foliar areas and by size in comparison to plants grown in its absence. The interaction was shown to modulate the expression of defense-related genes (Glu1, pod3 and lox1) in roots of P. vulgaris. Proteomic maps constructed using roots and leaves of plants challenged or unchallenged by T. harzianum and phytopathogenic fungi showed differences. Reference gels presented differences in spot distribution (absence/presence) and relative volumes of common spots (up or down-regulation). Differential spots were identified by peptide fingerprinting MALDI-TOF mass spectrometry. A total of 48 identified spots (19 for leaves and 29 for roots) were grouped into protein functional classes. For leaves, 33%, 22% and 11% of the identified proteins were categorized as pertaining to the groups: metabolism, defense response and oxidative stress response, respectively. For roots, 17.2%, 24.1% and 10.3% of the identified proteins were categorized as pertaining to the groups: metabolism, defense response and oxidative stress response, respectively.
51 citations
TL;DR: In bio-efficacy tests, formulations derived with the addition of glycerol at 3 or 6% in the production medium could protect the tomato plants from Fusarium wilt incidence by 44–50%.
50 citations
TL;DR: It was determined that the best carbon source was glucose and the best nitrogen source was peptone for lipase production and that other metallic ions did not affect the enzyme activity.
Abstract: Th is is the fi rst report about the characterization of Trichoderma harzianum lipase. A novel strain of Trichoderma harzianum IDM14D was isolated from soil. Th e isolated strain was cultivated for lipase production in shake fl asks at 30 °C for 7 days. For lipase production, it was determined that the best carbon source was glucose and the best nitrogen source was peptone. Maximum biomass was produced at a concentration of 1.25 g/L, in 7 days. Th e optimum pH and temperature for activity of the enzyme were 8.5 and 40 °C, respectively. Th e lipase was stable at a pH range of 8.0-10.0 and at 40 °C for 60 min. Ca 2+ and Mn 2+ enhanced lipase activity but it was determined that other metallic ions did not aff ect the enzyme activity. Th e K m and V max values of the crude enzyme for p-nitrophenyl butyrate hydrolysis were found to be 7.15 mM and 7.067 mM/min, respectively.
50 citations