20 viruses
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Plant Diseases Caused by Viruses
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Asian Network for Scientific Information (ANSInet)http://www.ansinet.com
Editor in Chief - Journal of Environmental Science and Technology
Editor in Chief - Plant Pathology Journal
American Chemical Society (ACS) World Association of Arab Translators &Linguists
Web:http://osp.mans.edu.eg/wakilE-mail: [email protected]
2010
Nucleoprotein .
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Influenza Polio Rabies Smallpox
Warts...
. 2000 .
)500( .
.
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Capsid .
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RNADNA
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:
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:
)( .
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:1 2 3 .
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Fastidious vascular bacteria. .
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:
Rigid rods
Flexuousthreads
Bacillus like Spherical(Isometric or Polyhyderal).
TMV 15 XXXX
300 nm.
Potato virus x (pvx)10
30 X 480 nm
Citrus tristeza 2000 nm.
80 nm 17 nm.
:
RNA 24 DNA
Satellite viruses
.Viroids
Single StrandRNA 250 400 .
Virusoids
RNA RNA
.
Fig. 93
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Sateleite RNAs
RNAs )Virions(
RNA . :
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Plasmodesmata) ( 1/)810.(
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. .
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Potato leaf roll(PLR).
00010010 /.
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Latent viruses Symptomless carriers.
Masked symptoms
.
Mosaics
:
1 Mottling 2 Streak 3 Ring pattern
4 Veinclearing 5 Vein banding 6 Chlorotic spotting 7- Line pattern
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1 Mottling
2 Streak
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4 Veinclearing
5 Vein banding
6 Chlorotic spotting
7- Line pattern
3 Ring pattern
3 Ring pattern
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:1 .
2 .
3 .
4 .
5
6 Mites.
7 .
8 .
9
Control of Plant viruses
.)Quarantine , Inspection and
Certification(
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.. .
ELISA
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Cross protection.
3554
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3540
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0.11 2830 Tissue Culture.
Ribavirin .
Gibberellic acid .
1 Virus diseases of tomato
TomatoMosaic
Tomato Ring spot
TobaccoMosaic
0Tomato Spotted wilt
2Virus diseases of potato
20Viroids:
Potato Leafbroll virus
Potato viruses Y & X
Potato Spindle tuber viroids
3 Virus diseases of Cucurbits
20 :
- Cucumber Mosaic
- Squash Mosaic- Watermelon Mosaic
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4 CrucifersVirus diseases of
.. 68
- Turnip Mosaic
- Caulifeower Mosaic- Radish Mosaic
5LegumesVirus diseases of
. 40:
- Bean Common Mosaic virus
- Yellow Mosaic virus
6Virus diseases of Sugar beet
15
- Beat Curly top
- Beet Yellows
- Beet Mosaic
7Citrus Tristeza
.
8Banana Bunchy Top
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Cucumber Mosaic
Celery Lilies).(
:
Mottle
Distortion .
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:Cucumber Mosaic virus (CMV)
600
100
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. 1528.
:
Aliphatic
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