Ecology, Environment and Conservation Paper

FIRST REPORT OF CERATORHIZA ORYZAE-SATIVAE, A FUNGUSNATURALLY CAUSING AGGREGATE SHEATH SPOT DISEASE OFRICE IN MANIPUR

Vignesh P., K. Sarda Devi, Bireswar Sinha, L. Nongdrenkhomba Singh,Ph. Sobita Devi, W. Tampakleima Chanu and K. Dinesh

Abstract

Rice is cultivated and consumed worldwide being a cereal crop of chief importance. There are numeroussoil-borne fungi causing diseases of huge economic losses to production of rice. A survey of soil-bornefungi of rice was conducted in different valley districts of Manipur, and symptoms appearing as lesions,water-soaked spots near the waterline which often coalesces, forming concentric lesion bands were spotted.Among the collected symptomatic samples, a fungus, Ceratorhiza oryzae - sativae wasidentified. An internaltranscribed sequence of the isolated fungus was generated and an NCBI accession number, MH255604acquired. This disease might become severe in near future in all rice-growing fields of the state,andidentification of this pathogen shall be essential for developing the management strategies.