Cucurbit yellow stunting disorder virus (CYSDV): Difference between revisions

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==Description and Significance==
==Description and Significance==
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<i>Cucurbit yellow stunting disorder virus</i>, CYSDV, can infect members of the family <i>Cucurbitaceae</i>, including all types of melons, summer and winter squash, pumpkins, gourds, and cucumbers [1]. CYSDV symptoms develop first in older leaves and mimic water stress. Intervenial chlorosis, a yellowing between the veins, streaks the leaves. In certain varieties, small green spots may develop on the leaves as well. As the plant’s internal transport system breaks down, it begins to drop its older leaves in attempt to preserve itself. Without enough leaves, the plant’s strength dwindles and it no longer can support or nourish its fruit. As a result, the fruits are smaller, not as sweet, and don’t ship or store as well [1]. Consequently, CYSDV has significant economic implications on national and international agriculture. However, control is difficult because there is no chemical or biological control suitable to fight the virus. Increasing water and fertilizer, and early season insecticide application (to reduce the virus’s vector population) may help, but these remedies compromise the producer’s ability to grow a sustainable crop and are incredibly costly [1].
<i>Cucurbit yellow stunting disorder virus</i>, CYSDV, can infect members of the family <i>Cucurbitaceae</i>, including all types of melons, summer and winter squash, pumpkins, gourds, and cucumbers [1]. CYSDV symptoms develop first in older leaves and mimic water stress. Intervenial chlorosis, a yellowing between the veins, streaks the leaves. Eventually the entire leaf becomes yellow except for the veins [3]. In certain varieties, small green spots may develop on the leaves as well. As the plant’s internal transport system breaks down, it begins to drop its older leaves in attempt to preserve itself. Without enough leaves, the plant’s strength dwindles and it no longer can support or nourish its fruit. As a result, the fruits are smaller, not as sweet, and don’t ship or store as well [1]. Consequently, CYSDV has significant economic implications on national and international agriculture. However, control is difficult because there is no chemical or biological control suitable to fight the virus. Increasing water and fertilizer, and early season insecticide application (to reduce the virus’s vector population) may help, but these remedies compromise the producer’s ability to grow a sustainable crop and are incredibly costly [1].
 
==Genome Structure==
==Genome Structure==
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Revision as of 00:07, 10 September 2010

A Viral Biorealm page on the family Cucurbit yellow stunting disorder virus (CYSDV)

Cucurbit yellow stunting disorder virus in melon, a member of the virus's host family, Cucurbitaceae. [1].




Baltimore Classification


Group IV: (+) sense single-stranded RNA viruses

Higher order categories


Order: Unassigned
Family: Closteroviridae
Genus: Crinivirus

Description and Significance


Cucurbit yellow stunting disorder virus, CYSDV, can infect members of the family Cucurbitaceae, including all types of melons, summer and winter squash, pumpkins, gourds, and cucumbers [1]. CYSDV symptoms develop first in older leaves and mimic water stress. Intervenial chlorosis, a yellowing between the veins, streaks the leaves. Eventually the entire leaf becomes yellow except for the veins [3]. In certain varieties, small green spots may develop on the leaves as well. As the plant’s internal transport system breaks down, it begins to drop its older leaves in attempt to preserve itself. Without enough leaves, the plant’s strength dwindles and it no longer can support or nourish its fruit. As a result, the fruits are smaller, not as sweet, and don’t ship or store as well [1]. Consequently, CYSDV has significant economic implications on national and international agriculture. However, control is difficult because there is no chemical or biological control suitable to fight the virus. Increasing water and fertilizer, and early season insecticide application (to reduce the virus’s vector population) may help, but these remedies compromise the producer’s ability to grow a sustainable crop and are incredibly costly [1].

Genome Structure


Genomic structure of isolate 35 Cucurbit yellow stunting disorder virus, CYSDV. [2].

Virion Structure of CYSDV


Reproductive Cycle of CYSDV in a Host Cell


Viral Ecology & Pathology


References

[1] McGinley, Susan. 2010. "New virus attacks melons, cucumbers, and squash." Western Farm Press. http://westernfarmpress.com/new-virus-attacks-melons-cucumbers-and-squash-0. Date accessed: 6 Sept. 2010.



Page authored by Sally Wilson for BIOL 375 Virology, September 2010