TITLE:
Occurrence of Alternaria alternata causing Alternaria blight in pigeonpea in India
AUTHORS:
Mamta Sharma, Raju Ghosh, Suresh Pande
KEYWORDS:
Climate Change; Internal Transcribed Spacer (ITS); PCR; Pigeonpea; Phylogenetic Tree
JOURNAL NAME:
Advances in Bioscience and Biotechnology,
Vol.4 No.6,
June
24,
2013
ABSTRACT: Blight symptoms on pigeonpea were observed in alarming
proportion since 2009 onwards in Andhra Pradesh state of India. Alternaria
blight infected pigeonpea plants were collected from Andhra Pradesh state of
India to isolate and characterize the pathogen. The isolate proved pathogenic
on pigeonpea cultivar ICPL 87119. Genetic characteristics were analyzed based
on the sequence of the rDNA-internal transcribed spacer (ITS) region. The phylogenetic
tree based on rDNA-ITS analysis showed that the Alternaria alternata causing Alternaria blight in pigeonpea is
very distinct from the other Alternaria isolate reported from different host.
This is the first report of molecular identification of Alternaria alternata causing Alternaria blight in pigeonpea.