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First report of Tobacco ringspot virus occurring in gladiolus in India

IR@CSIR-IHBT

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Title First report of
Tobacco ringspot virus
occurring in gladiolus
in India
 
Creator Katoch, M
Raja, Ram
Zaidi, A A
 
Subject Plant Biotechnology
Plant viruses
 
Description Gladiolus (
Gladiolus grandiflorous
) is cultivated for
its cut flowers in many countries worldwide, including
India, where plants are commonly infected with
Bean
yellow mosaic virus
(BYMV) and/or
Cucumber mosaic
virus
(CMV). Also reported in gladiolus in different parts
of the world, but limited in distribution, are
Tobacco ringspot
virus
(TobRSV),
Tomato ringspot virus
(TomRSV),
Tomato black ring virus
(TBRV),
Arabis mosaic virus
(ArMV),
Strawberry latent ringspot virus
(SLRV),
Tobacco
rattle virus
(TRV) and
Tomato spotted wilt virus
(TSWV)
(Stein, 1995).
During a survey for viruses infecting gladiolus in
Palampur, some plants of 22 cultivars exhibited flower
colour-break symptoms, whereas others were symptomless.
When indexed by ELISA using specific antibodies to
BYMV (obtained from Sanofi, France) (Katoch
et al
., 2002),
these plants were shown to be infected with BYMV. However,
symptomless plants of gladiolus cv. Yellow Supreme,
when indexed by DAS-ELISA using antibodies to TobRSV
(obtained from Agdia Inc, Elkhart, IN, USA), were shown
to be infected with TobRSV.
Sap from these symptomless TobRSV-infected gladioli
induced necrotic local lesions 7–10 days after inoculation
followed by systemic leaf malformation characteristic
of TobRSV (Brunt
et al.
, 1996) in mechanically inoculated
Nicotiana clevelandii
and
Vigna unguiculata
seedlings.
The presence of TobRSV in these plants was confirmed by
DAS-ELISA.
This is the first report of TobRSV occurring in gladiolus
in India. TobRSV can be transmitted on contaminated
tools used during harvesting of flowers and corms, by its
nematode vectors and in gladiolus seeds. To control the
virus, therefore, the use of disease-free planting material,
good sanitation practices and vector management is
recommended.
 
Date 2003
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://ihbt.csircentral.net/370/1/83_2003_First_Report.pdf
Katoch, M and Raja, Ram and Zaidi, A A (2003) First report of Tobacco ringspot virus occurring in gladiolus in India. Plant Pathology, 52. p. 789.
 
Relation http://ihbt.csircentral.net/370/