Biological Control of <I>Rhizoctonia solani</I> AG1-1A, the Causal Agent of Rice Sheath Blight with Trichoderma Strains
Sheath blight caused by Rhizoctonia solani is one of the most serious rice diseases worldwide. The disease is currently managed only by the excessive application of chemical fungicides which are toxic and not environmentally friendly. Therefore, greater emphasis should be given to biological control...
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| Format: | Article |
| Language: | English |
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Firenze University Press
2011-01-01
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| Series: | Phytopathologia Mediterranea |
| Online Access: | https://oajournals.fupress.net/index.php/pm/article/view/5372 |
| _version_ | 1811275899152105472 |
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| author | Shahram NAEIMI Sayyed OKHOVVAT Mohammad JAVAN-NIKKHAH Csaba VÁGVÖLGYI Vahid KHOSRAVI Laszlo KREDICS |
| author_facet | Shahram NAEIMI Sayyed OKHOVVAT Mohammad JAVAN-NIKKHAH Csaba VÁGVÖLGYI Vahid KHOSRAVI Laszlo KREDICS |
| author_sort | Shahram NAEIMI |
| collection | DOAJ |
| description | Sheath blight caused by Rhizoctonia solani is one of the most serious rice diseases worldwide. The disease is currently managed only by the excessive application of chemical fungicides which are toxic and not environmentally friendly. Therefore, greater emphasis should be given to biological control as being both safe and effective. Trichoderma species are ubiquitous fungi in the soil and have an antagonistic activity against several soil-borne plant pathogens including R. solani. The present study was undertaken to evaluate the potential of indigenous Trichoderma strains from Mazandaran province, Northern Iran (a Mediterranean region on the southern coast of the Caspian Sea) against R. solani AG1-IA in vitro, and against sheath blight disease in the glasshouse, in order to find biocontrol isolates for application in the field. More than 200 Trichoderma strains were isolated from the soil, plant debris and the phyllosphere in rice felds. Strains were first screened for their antagonism to R. solani by in vitro antagonism tests including dual culture, antibiosis, the effect of Trichoderma strains on the production and viability of R. solani sclerotia, and hyperparasitism on microscopic slides. According to the in vitro experiments, several strains belonging to T. harzianum, T. virens and T. atroviride showed excellent biocontrol. These potential antagonist strains were further evaluated for their effectiveness in controlling sheath blight under glasshouse conditions. Among the 55 selected strains, seven significantly controlled the disease. T. harzianum AS12-2 was the most effective strain in controlling rice sheath blight, better even than propiconazole, the most commonly used fungicide in Iran. |
| first_indexed | 2024-04-12T23:47:08Z |
| format | Article |
| id | doaj.art-72dc71ccd1b7479c9d91acbee2f0e829 |
| institution | Directory Open Access Journal |
| issn | 0031-9465 1593-2095 |
| language | English |
| last_indexed | 2024-04-12T23:47:08Z |
| publishDate | 2011-01-01 |
| publisher | Firenze University Press |
| record_format | Article |
| series | Phytopathologia Mediterranea |
| spelling | doaj.art-72dc71ccd1b7479c9d91acbee2f0e8292022-12-22T03:11:50ZengFirenze University PressPhytopathologia Mediterranea0031-94651593-20952011-01-0149310.14601/Phytopathol_Mediterr-34378660Biological Control of <I>Rhizoctonia solani</I> AG1-1A, the Causal Agent of Rice Sheath Blight with Trichoderma StrainsShahram NAEIMI0Sayyed OKHOVVAT1Mohammad JAVAN-NIKKHAH2Csaba VÁGVÖLGYI3Vahid KHOSRAVI4Laszlo KREDICS5Department of Plant Protection, Faculty of Agriculture, University of Tehran, KarajDepartment of Plant Protection, Faculty of Agriculture, University of Tehran, KarajDepartment of Plant Protection, Faculty of Agriculture, University of Tehran, KarajDepartment of Microbiology, Faculty of Science and Informatics, University of SzegedDeputy of Rice Research Institute in Mazandaran, AmolDepartment of Microbiology, Faculty of Science and Informatics, University of SzegedSheath blight caused by Rhizoctonia solani is one of the most serious rice diseases worldwide. The disease is currently managed only by the excessive application of chemical fungicides which are toxic and not environmentally friendly. Therefore, greater emphasis should be given to biological control as being both safe and effective. Trichoderma species are ubiquitous fungi in the soil and have an antagonistic activity against several soil-borne plant pathogens including R. solani. The present study was undertaken to evaluate the potential of indigenous Trichoderma strains from Mazandaran province, Northern Iran (a Mediterranean region on the southern coast of the Caspian Sea) against R. solani AG1-IA in vitro, and against sheath blight disease in the glasshouse, in order to find biocontrol isolates for application in the field. More than 200 Trichoderma strains were isolated from the soil, plant debris and the phyllosphere in rice felds. Strains were first screened for their antagonism to R. solani by in vitro antagonism tests including dual culture, antibiosis, the effect of Trichoderma strains on the production and viability of R. solani sclerotia, and hyperparasitism on microscopic slides. According to the in vitro experiments, several strains belonging to T. harzianum, T. virens and T. atroviride showed excellent biocontrol. These potential antagonist strains were further evaluated for their effectiveness in controlling sheath blight under glasshouse conditions. Among the 55 selected strains, seven significantly controlled the disease. T. harzianum AS12-2 was the most effective strain in controlling rice sheath blight, better even than propiconazole, the most commonly used fungicide in Iran.https://oajournals.fupress.net/index.php/pm/article/view/5372 |
| spellingShingle | Shahram NAEIMI Sayyed OKHOVVAT Mohammad JAVAN-NIKKHAH Csaba VÁGVÖLGYI Vahid KHOSRAVI Laszlo KREDICS Biological Control of <I>Rhizoctonia solani</I> AG1-1A, the Causal Agent of Rice Sheath Blight with Trichoderma Strains Phytopathologia Mediterranea |
| title | Biological Control of <I>Rhizoctonia solani</I> AG1-1A, the Causal Agent of Rice Sheath Blight with Trichoderma Strains |
| title_full | Biological Control of <I>Rhizoctonia solani</I> AG1-1A, the Causal Agent of Rice Sheath Blight with Trichoderma Strains |
| title_fullStr | Biological Control of <I>Rhizoctonia solani</I> AG1-1A, the Causal Agent of Rice Sheath Blight with Trichoderma Strains |
| title_full_unstemmed | Biological Control of <I>Rhizoctonia solani</I> AG1-1A, the Causal Agent of Rice Sheath Blight with Trichoderma Strains |
| title_short | Biological Control of <I>Rhizoctonia solani</I> AG1-1A, the Causal Agent of Rice Sheath Blight with Trichoderma Strains |
| title_sort | biological control of i rhizoctonia solani i ag1 1a the causal agent of rice sheath blight with trichoderma strains |
| url | https://oajournals.fupress.net/index.php/pm/article/view/5372 |
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