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Pathological Status of Pyricularia angulata Causing Blast and Pitting Disease of Banana in Eastern India

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Title Pathological Status of Pyricularia angulata Causing Blast and Pitting Disease of Banana in Eastern India
Not Available
 
Creator Sangeetha Ganesan*, Hari Shankar Singh, Srinivas Petikam, and Debasish Biswale
 
Subject blast, Musa spp., pitting disease, Pyricularia
 
Description Not Available
Incidence of leaf blast on nursery plants and pitting
disease on maturing banana bunches has been
recorded in banana plantations during rainy season
in Eastern India during 2014 to 2015. Taxonomical
identification as well as DNA sequence analysis of the
internal transcribed spacer region of fungus isolated
from affected tissue culture derived plantlets and
fruits confirmed the pathogen to be Pyricularia angulata
Hashioka “in both the cases”. Koch’s postulates
were proved on young plantlets as well as on maturing
fruits of cv. Grand Naine under simulated conditions.
Evolutionary history was inferred and presented for
our P. angulata strain PG9001 with GenBank accession
no. KU984740. The analysis indicated that the
P. angulata is phylogenitically distinct from other related
species related to both Pyricularia and Magnaporthe.
Detailed symptoms of blast lesions on young
leaves, transition leaves, mid rib, petioles, peduncle,
maturing bunches, bunch stalks and cushions were
documented. Notably, the distinct small pitting spots
on maturing bunches reduced the visual appeal of mature
fruits. Appearance of pitting symptoms on fruits
in relation with age of fruits and their distribution
pattern on bunch and fingers was also documented
in detail. Further, the roles of transitory leaves, weed
hosts, seasonality on disease occurrence have also been
documented.
ICAR-IIHR
 
Date 2019-03-29T03:48:54Z
2019-03-29T03:48:54Z
2017-01-01
 
Type Research Paper
 
Identifier Not Available
1598-2254 eISSN 2093-9280
http://krishi.icar.gov.in/jspui/handle/123456789/17757
 
Language English
 
Relation Plant Pathol. J. 33(1) : 9-20 (2017);
 
Publisher The Korean Society of Plant Pathology