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Publication
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| Title of Article |
Identification of Rhizoctonia solani, as the cause of rice sheath blight and the source of its resistance, from Thai indigenous lowland rice germplasm |
| Date of Acceptance |
5 December 2021 |
| Journal |
| Title of Journal |
Euphytica |
| Standard |
SCOPUS |
| Institute of Journal |
Springer Nature |
| ISBN/ISSN |
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| Volume |
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| Issue |
218 |
| Month |
January |
| Year of Publication |
2022 |
| Page |
6 |
| Abstract |
Sheath blight disease caused by Rhizoctonia solani is a severe limitation of lowland rice productivity in Thailand. Typically, confound symptoms occurring with other sheath diseases caused by Rhizoctonia and Sclerotium. To classify these pathogen species, thirty-three fungal isolates were collected from lowland fields in central and northeast Thailand and identified by using morphological and molecular tools described herein. The isolates were identified as R. solani AG-1 IA, R. solani, R. oryzae-sativae (aggregate sheath spot), and S. hydrophilum (stem rot). This is the first report of S. hydrophilum associated with complex rice sheath blight diseases in Thailand. According to the pathogenicity test of the KDML105 and Pathum Thani 1 varieties, R. solani AG-1 IA isolates were found to be the most virulent strain. Each isolate revealed diverts in morphology and disease severity on rice. The H-06 (from Udon Thani) and K-12 (from Buri Ram) isolates showed the highest AUDPC (1448.24 - 1681.24 and 1301.84 - 1383.72, respectively) on tested varieties. One hundred and ninety indigenous lowland rice varieties, along with seven commercial varieties, were screened with both aggressive isolates under greenhouse conditions. Interestingly, thirty varieties were found to be resistant (< 20 % RLH) to tested isolates. Based on result from our study, therefore, that these varieties may provide a source of sheath blight resistance in Thailand, and prove beneficial for future rice breeding programs. |
| Keyword |
Rhizoctonia, Sclerotium, Fungal variability, Screening, Resistance, Relative lesion height, AUDPC |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
false |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
ไทย