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ORYZA- An International Journal on Rice
Year : 2015, Volume : 52, Issue : 3
First page : ( 190) Last page : ( 195)
Print ISSN : 0474-7615. Online ISSN : 2249-5266.

Molecular identification of seed borne non-sporulating endophytic mycobiota of rice landraces and its impact on soil borne rice pathogens

Sethi Arundhati B1, Dhua Urmila1,*, Dhua Sudhiranjan1, Mukherjee Arup K1, Jena Mayabini1, Gopalan RS2, Panda Chakradhar3

1National Rice Research Institute, Cuttack-753006, Odisha

2Directorate of Agriculture, Bhubaneswar

3State Seed Testing Laboratory, Bhubaneswar, Odisha

*E mail of corresponding author: urmila.dhua@gmai.com

Online published on 14 July, 2016.

Abstract

Endophytes were isolated from the seeds of two rice landraces viz. Malabati and Champa collected from Odisha, India. Both were non sporulating cultures. The ITS region of ribosomal DNA was amplified and both isolates were identified by molecular techniques as two species of Dendryphiella. The Gen Bank accession numbers fot these endophytes were KT796364 & KT796365. The endophyte from rice variety Malabati was different than the other Dendryphiella specie reported earlier. Hence its impact on three soil borne rice pathogens was studied. Sclerotia production by Rhizoctonia solani (c.o. of sheath blight of rice) was drastically reduced and causal organisms of Aggregate sheath spot (c.o R.oryzae sative ) and seedling blight (c.o. Sclerotium) could not produce the sclerotia. This endophyte thus has the ability to manage the soil borne sclerotia-producing rice pathogens.

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Keywords

EndophytesDendryphiellaSclerotiasheath blight of riceaggregate sheath spot.

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