Some viral and viroid diseases of plants

Some viral and viroid diseases of plants

▪ Table
Some viral and viroid diseases of plants
disease causative agent hosts symptoms and signs additional features
tobacco mosaic tobacco mosaic virus (TMV) tobacco, tomato, and hundreds of other vegetables and weeds mottled appearance of leaves (mosaic pattern); dwarfing virus remains viable for years in soil and tobacco; the disease occurs worldwide; significant economic losses can occur
cucumber mosaic cucumber mosaic virus (CMV) cucumber, bean, tobacco, and other plants (wide range of hosts) similar to those of TMV infections worldwide occurrence; very broad range of hosts
barley yellow dwarf barley yellow dwarf virus (BYDV) barley, oats, rye, wheat; also pasture grasses and weeds yellowing and dwarfing of leaves; stunting of plants one of the most important diseases of small grains
tomato spotted wilt tomato spotted wilt virus (TSWV) tomato, pepper, pineapple, peanut, and many other plants leaves show concentric, necrotic rings; necrotic region yellow, then turning red-brown very wide host range; infects hundreds of different plants
prunus necrotic ring spot prunus necrotic ring spot virus (PNRV) stone fruits—e.g., cherry, almond, peach, apricot, plum, and others delayed foliation; leaves on infected branches show light green spots and dark rings, then become necrotic and fall off very widespread disease of stone fruits; affects almost all trees in fruit-producing regions
potato spindle tuber potato spindle tuber viroid (PSTV) potato and tomato stunted growth; tubers are spindle-shaped and smaller than healthy tubers the first identified viroid infection in plants; can cause major reduction in crop yield
citrus exocortis citrus exocortis viroid (CEV) orange, lemon, lime, and other citrus plants infected trees show vertical splits in bark, thin strips of partially loosened bark, and a cracked, scaly appearance worldwide distribution; causes reduction of crop yield
See as table:

* * *


Universalium. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • plant disease — ▪ plant pathology Introduction       an impairment of the normal state of a plant that interrupts or modifies its vital functions.       All species of plants, wild and cultivated alike, are subject to disease. Although each species is… …   Universalium

  • List of citrus diseases — This article is a list of diseases in citrus plants. Contents 1 Bacterial diseases 2 Fungal diseases 3 Nematodes, parasitic 4 Viral diseases …   Wikipedia

  • virus — viruslike, adj. /vuy reuhs/, n., pl. viruses. 1. an ultramicroscopic (20 to 300 nm in diameter), metabolically inert, infectious agent that replicates only within the cells of living hosts, mainly bacteria, plants, and animals: composed of an RNA …   Universalium

  • MicroRNA — The stem loop secondary structure of a pre microRNA from Brassica oleracea. A microRNA (abbreviated miRNA) is a short ribonucleic acid (RNA) molecule found in eukaryotic cells. A microRNA molecule has very few nucleotides (an average of 22)… …   Wikipedia

  • Virology — is the study of viruses and virus like agents: their structure, classification and evolution, their ways to infect and exploit cells for virus reproduction, the diseases they cause, the techniques to isolate and culture them, and their use in… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”