A PCR-based method to distinguish fungi of the rice sheath-blight complex,Rhizoctonia solani, R. oryzaeandR. oryzae-sativae

) and the rice sheath blight pathogen, Rhizoctonia solani

1 Department of Entomology and Plant Pathology, Auburn University, Auburn, USA and Acharya N G Ranga Agricultural University, Hyderabad, India. 2 Department of Entomology and Plant Pathology, Auburn University, Auburn, USA. 3 Department of Biological Sciences, Auburn University, Auburn, USA. 4 International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India. 5 Depart...

Genetic diversity of the rice sheath blight pathogen population in India.

Rhizoctonia sheath diseases of rice, comprising sheath blight, sheath spot and aggregate sheath spot, cause significant yield losses in many rice-growing regions of the world. The emergence of Rhizoctonia sheath diseases as economically important rice diseases is of recent date and has been attributed to the intensification of rice-cropping systems with the development of new short-stature, hig...

Xylosylated Detoxification of the Rice Flavonoid Phytoalexin Sakuranetin by the Rice Sheath Blight Fungus Rhizoctonia solani.

Sakuranetin (1) is a rice flavanone-type phytoalexin. We have already reported that the metabolites from the detoxification of 1 by Pyriculariaoryzae are naringenin (2) and sternbin. In this study, we investigated whether the rice sheath blight fungus Rhizoctoniasolani, another major rice pathogen, can detoxify 1. The extract of R. solani suspension culture containing 1 was analyzed by LC-MS to...

Rapid Determination of Rice Cultivar Responses to the Sheath Blight Pathogen Rhizoctonia solani Using a Micro-Chamber Screening Method

Sensitivity to a Phytotoxin from Rhizoctonia solani Correlates with Sheath Blight Susceptibility in Rice.

ABSTRACT Sheath blight is one of the most important and intractable diseases of rice (Oryza sativa) where limited control has been achieved using traditional approaches. Quantitative inheritance, extraneous traits, and environmental factors confound genetic analysis of host resistance. A method was developed to isolate and utilize a phytotoxin from Rhizoctonia solani to investigate the genetics...