Topic
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: Use of Aspergillus niger as bio-inoculant could be a sustainable approach to improve soil P availability, promote plant growth and alleviate adverse effect of salt stress.
41 citations
01 Jan 1975
TL;DR: Biological control of the disease has been attributed to the ability of Trichoderma isolates to overgrow and kill S. rolfsii, and single biological components of the environment can be equally decisive.
Abstract: Pathogenesis can be viewed as a battle between a plant and a pathogen refereed by the environment. A small change in a single environmental factor can decide the outcome of the plant-pathogen struggle. For example, lines of wheat which carry a gene known as Sr 6 are highly resistant to race 56 of stem rust when grown at 20° C. If the temperature is increased to 25° C, the plants become highly susceptible to the same race of this pathogen (Daly, 1972). Single biological components of the environment can be equally decisive. Damage to tomato plants caused by Sclerotium rolfsii can be greatly reduced by adding a second fungus, Trichoderma harzianum, to the soil. In this case, biological control of the disease has been attributed to the ability of Trichoderma isolates to overgrow and kill S. rolfsii (Wells et al., 1972).
41 citations
Journal Article•
TL;DR: Results of the antagonism tests showed that Acremonium sp.
Abstract: Forty-five fungal isolates were obtained from sclerotia of Rhizoctonia solani on potato tubers in Erzurum, Turkey. The interaction between fungal isolates and R. solani was studied in dual culture technique. Some fungal isolates affected R. solani by antibiosis and/or parasitism. Results of the antagonism tests showed that Acremonium sp., Gliocladium viride, Paecilomyces marquandii, Paecilomyces sulphurellus, Penicillium camemberti, Penicillium expansum, Penicillium frequentans (ME-50), Penicillium nigricans, Penicillium olsonii, Penicillium phialosporum, Sporothrix sp. (MCY-4), Sporothrix schenckii, and Verticillium dahliae isolates produced an inhibition zone in front of the R. solani colony to a varying degree. Trichoderma harzianum isolates were able to overgrow the mycelium of R. solani. Physical colony contact was observed between the remaining 21 fungal isolates and R. solani. Furthermore, coiling of hyphae of Acremonium sp., Acremonium strictum, Gliocladium catenulatum, G. viride, and T. harzianum around those of R. solani was commonly observed.
41 citations
TL;DR: Evidence was obtained to suggest however that enhanced growth of lettuce plants following treatment with Trichoderma can produce marketable yields of lettuce similar to those obtained with tolclofos-methyl.
Abstract: Isolates of Trichoderma were tested for their ability to control Rhizoctonia solani in lettuce seedlings and mature plants in a glasshouse. The best isolate (T. viride IMI 298375) was tested for its ability to control bottom rot disease in mature lettuce plants grown in polythene tunnels. Control was achieved in several trials but there was little evidence for much improvement after repeated applications and control with Trichoderma was poorer than that obtained with a standard treatment with tolclofos-methyl. Evidence was obtained to suggest however that enhanced growth of lettuce plants following treatment with Trichoderma can produce marketable yields of lettuce similar to those obtained with tolclofos-methyl.
41 citations
01 Jan 2010
TL;DR: ITS-PCR of rDNA region with ITS1 and ITS4 primers produced 600bp products in all isolates indicated the identification patterns of Trichoderma isolates.
Abstract: Nineteen isolates of Trichoderma viride and Trichoderma harzianum obtained from rhizosphere soil of plantation crops, forest soil and agricultural fields of North Bengal region were studied using RAPD and ITS-PCR. The genetic relatedness among eleven isolates of T. viride and eight isolates of T. harzianum were analyzed with six random primers. RAPD profiles showed genetic diversity among the isolates with the formation of eight clusters. Analysis of dendrogram revealed that similarity coefficient ranged from 0.67 to 0.95. ITS-PCR of rDNA region with ITS1 and ITS4 primers produced 600bp products in all isolates. This result indicated the identification patterns of Trichoderma isolates.
41 citations