Evaluation of Resistance of a Novel Rice Line YSBR1 to Sheath Blight

Zuo, Shimin; Wang, Zibin; Chen, Xijun; Gu, Fang; Zhang, Yafang; Chen, Zongxiang; X, Pan; Pan, Cunhong

doi:10.1016/s1875-2780(08)60075-9

Cited by 12 publications

(15 citation statements)

References 8 publications

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“…Accordingly, the resistance frequency is 2.8% for aromatic, 1.7% for aus, and 0.2% each for temperate japonica and tropical japonica. In a study conducted by Zuo et al (2008), japonica cultivars showed higher ShB severity than indica cultivars. This provides a general observation that japonica rice is more susceptible than indica rice.…”

Section: Discussionmentioning

confidence: 95%

Searching for Germplasm Resistant to Sheath Blight from the USDA Rice Core Collection

Jia

Wang

Agrama³

et al. 2011

Crop Science

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Sheafh blight, oaused by the fungal pathogen Rhizoctonia solani, is one of the most important and widely distributed diseases capable of infesting numerous orops including rioe {Oryza sativa L.). Resistant germplasm with wide variation is essential for controlling this disease via breeding efforts, and genetic background helps design breeding strategies. We used the microchamber method to evaluate the USDA rice core collection, including 1794 accessions from 114 countries, for sheath blight resistance. Seventytwo molecular markers were used for genotyping. Compared with 'Jasmine 85', which has been recognized as one of the most resistant germplasm accessions, 52 accessions were significantly more resistant at the 5% level of probability, and of these 17 were more resistant at the 1% level of probability. The resistant accessions originated from 26 countries in nine geographic regions and are diversified for 13 phenotypic characteristics. The resistant accessions all belonged to the cultivated species O. sativa. Genetic analysis using 72 molecular markers revealed that 45 resistant accessions (87%) were indica type, which were further classified in two groups. Three accessions were identified as aus, two as aromatic, and one each as temperate japónica and tropical japónica. Breeders could use these findings to choose sheath blight resistant accessions for cultivar improvement.

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Section: Discussionmentioning

confidence: 95%

Searching for Germplasm Resistant to Sheath Blight from the USDA Rice Core Collection

Jia

Wang

Agrama³

et al. 2011

Crop Science

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“…The rice variety IR 64 shows moderate susceptibility (Zuo et al. ). The RLH on these varieties varied considerably among different isolates.…”

Section: Discussionmentioning

confidence: 99%

“…The rice varieties Swarnadhan (IET 5656) and Tetep show moderate resistance (Sha and Zhu 1990;Rani et al 2008). The rice variety IR 64 shows moderate susceptibility (Zuo et al 2009). The RLH on these varieties varied considerably among different isolates.…”

Section: Discussionmentioning

confidence: 99%

Pathogenic and Genetic Variation among the Isolates of Rhizoctonia solani (AG 1‐IA), the Rice Sheath Blight Pathogen

Yugander

Ladhalakshmi

Prakasham

et al. 2014

Journal of Phytopathology

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Sheath blight disease of rice caused by Rhizoctonia solani is one of the most dreaded plant diseases faced by the rice farmers all over the world. None of the commercially cultivated rice varieties have sufficient level of field resistance, and the disease is presently being managed by chemical pesticides. In this study, 40 isolates of rice sheath blight pathogen, collected from diverse rice ecosystems from 12 different states of India, were characterized for their morphological, pathological and genetic variation. The isolates showed wide morphological variation in terms of size of sclerotia and abundance of sclerotia production. The virulence of each pathogen isolate was studied on four rice varieties, that is TN1, IR 64, Tetep and Swarnadhan in glasshouse, and observations were taken by measuring the relative lesion height. The relative lesion heights produced by these isolates on four different rice varieties varied widely. Genetic variation of the isolates was analysed using ISSR markers. The primers based on AG, GA, AC and CA repeats were informative and revealed polymorphism among the isolates. The polymorphism information content (PIC) of the primers ranged from 0.80 to 0.96, while the resolving power (Rp) ranged from 3.7 to 15.35. Largely, grouping of the isolates happened based on their geographical origin. One isolate from Titabar, Assam, and another from Adialabad, Telangana, were quite distinct from rest of the isolates.

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“…A wide range of susceptibility/resistance to sheath blight is present among the rice varieties in the world, from high susceptibility to moderate but stable resistance. Researchers have been able to commercially produce resistant varieties using breeding programs and manipulated resistant genes, but so far these efforts have been ineffective [146]. It may be because multiple genes (or QTLs) control the sheath blight resistance [144].…”

Section: Qtls Of Rice Associated With the Disease Resistance To Sheatmentioning

confidence: 99%

An Overview of Rice QTLs Associated with Disease Resistance to Three Major Rice Diseases: Blast, Sheath Blight, and Bacterial Panicle Blight

Zarbafi

Ham

2019

Agronomy

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Rice (Oryza sativa L.) is one of the most important crops that are produced as human food, directly feeding people more than any other crop. Hence, it is important to increase the yield potential of rice through improving the disease resistance to prevailing rice diseases. Blast caused by the fungus Magnaporthe oryzae, sheath blight caused by the fungus Rhizoctonia solani Kühn, and bacterial panicle blight caused by the bacteria Burkholderia glumae and B. gladioli are serious rice diseases in many rice-producing regions. In spite of the chronic damages from these major diseases, the quantitative resistance to each of them is not known very well and any available disease-resistant varieties are rare or not stable. Although gene-for-gene resistance that is mediated by an R-Avr interaction has been intensively studied for blast, quantitative (or horizontal) resistance to a broad spectrum of races in M. oryzae is still poorly understood. Identification of the quantitative trait loci (QTLs) related to these diseases and using marker technology can facilitate marker-assisted selection to screen resistant traits in individual resources, which could ultimately lead to the development of novel disease-resistant rice varieties. This article is a summary of identified QTLs that are associated with rice diseases, including blast, sheath blight, and bacterial panicle blight that can be used in breeding programs.

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Evaluation of Resistance of a Novel Rice Line YSBR1 to Sheath Blight

Cited by 12 publications

References 8 publications

Searching for Germplasm Resistant to Sheath Blight from the USDA Rice Core Collection

Searching for Germplasm Resistant to Sheath Blight from the USDA Rice Core Collection

Pathogenic and Genetic Variation among the Isolates of Rhizoctonia solani (AG 1‐IA), the Rice Sheath Blight Pathogen

An Overview of Rice QTLs Associated with Disease Resistance to Three Major Rice Diseases: Blast, Sheath Blight, and Bacterial Panicle Blight

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