Record Details

Population structure of Alternaria species causing leaf blight of sunflower (Helianthus annuus L.) in India

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Population structure of Alternaria species causing leaf blight of sunflower (Helianthus annuus L.) in India
 
Creator Santha Lakshmi Prasad, M
Naresh, N
Sujatha, K
Usha, D.,
Sujatha, M
C. Sarada
Chander Rao,S.
P. Chowdappa.
 
Subject Alternaria species.sunflower (Helianthus annuus L.) . isolates. morphological traits. pathogenicity. DNA sequencing
 
Description Not Available
Leaf blight disease of sunflower caused by Alternaria species is one of the major foliar diseases
occurring in sunflower cultivated areas of India. Leaf blight samples collected from sunflower growing areas
during rainy season were colonized by Alternariaster helianthi while samples collected during spring season
incited by Alternaria alternata. Among two Alternaria species, A. helianthi was the predominant pathogen
among the isolates. A total of 220 A. helianthi isolates;30 A. alternata isolates collected during 2009–10 to
2011–12 from infected sunflower leaves in nine states of India were characterized based on phenotypic, molecular and pathogenic aggressiveness. Molecular identification based on phylogenic analysis using partial
internal transcribed spacer regions showed that A. helianthi and A. alternata isolates separated into 11
phylogenetic groups. The pathogenicity on sunflower cultivars KBSH-1, KBSH-44, DRSF-108, PI-535890,
TX-16R, Morden revealed that some A. helianthi isolates were highly aggressive with blighting on Morden
and DRSF-108. Based on aggressiveness on sunflower cultivars, four groups identified in A. helianthi isolates;
three groups in A. alternata isolates. There was no association between phylogenetic group, disease severity and geography of collection among the isolates. Isolates Ah-15, 38, 47, 48, 49, 50, 97, 98, 99, 100,
107, 108, 109, 110, 111, 112, 125 and 126 in A. helianthi; Aa-3, 7, 4 and 9 in A. alternata were
aggressive on sunflower cultivars which would be utilized in future disease screening programmes. This is the
first report on population structure of Alternaria species and also highlights that A. helianthi is the predominant
pathogen associated with sunflower leaf blight in India.
ICAR
 
Date 2020-12-16T09:54:55Z
2020-12-16T09:54:55Z
2020-03-23
 
Type Research Paper
 
Identifier Lakshmi Prasad, M.S., Naresh, N., Sujatha, K. et al. Population structure of Alternaria species causing leaf blight of sunflower (Helianthus annuus L.) in India. Phytoparasitica 48, 335–356 (2020). https://doi.org/10.1007/s12600-020-00796-6
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/43488
 
Language English
 
Relation Not Available;
 
Publisher springer