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NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
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Research Journals >
Indian Journal of Biotechnology (IJBT) >
IJBT Vol.09 [2010] >
IJBT Vol.09(3) [July 2010] >
| Title: | Efficiency of Bemisia tabaci (Gennadius) populations from different plant-hosts for acquisition and transmission of cotton leaf curl virus |
| Authors: | Gupta, V K
Sharma, Rakesh
Singh, Satnam
Jindal, Jawala
Dilawari, V K |
| Keywords: | Bemisia tabaci
plant hosts
CLCuV transmission
whitefly |
| Issue Date: | Jul-2010 |
| Publisher: | CSIR |
| Abstract: | Whitefly (Bemisia tabaci) populations
collected from five crop plants, viz brinjal, cotton, potato, tomato, soybean
and a weed, Sida sp., and maintained on respective host plants were
studied for virus acquisition from diseased cotton plant and its subsequent
transmission to healthy cotton plants. The presence of virus in whitefly and
diseased plants was established by PCR amplification of CLCuV-specific DNA
primers (P1800-500). The virus acquisition from the diseased cotton
plants as well as its transmission to healthy cotton plant to cause disease was
100 per cent in the case of cotton-specific whitefly. Compared to this, using
whitefly from other host-plants, both the values for acquisition of virus as
well as its subsequent transmission decreased, being higher with
soybean-specific whitefly (80 and 70%, respectively) and minimum with tomato
whitefly (20% each). However, the actual virus transmission efficiency (ATE),
when expressed after taking into account the fraction of whitefly samples that
did not acquire virus, though was found to be 100 per cent in the case of
cotton-, tomato- and brinjal-whitefly, it remained more than 67% with whitefly
from other crops/weed. The study revealed that whitefly populations that are
specific to different host-plants, differ primarily in their efficiency for
acquiring CLCuV and once the virus is acquired it is efficiently transmitted to
healthy cotton plants to cause cotton leaf curl disease (CLCuD). The results
hold significance in control of CLCuD through appropriate management of
whitefly on alternate host plants/weeds, both in and around the cotton growing
areas. |
| Page(s): | 271-275 |
| ISSN: | 0975-0967 (Online); 0972-5849 (Print) |
| Source: | IJBT Vol.09(3) [July 2010]
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