Plant Pathology Short Notes – Diseases and Causative Organism microbiologystudy

PLANT PATHOLOGY Quick revision Notes


·        
False smut of paddy – Ustilaginoidea virens
·        
Blight of paddy is caused by Xanthomonas oryzae
·        
Spodoptera mauritia is a pest of Paddy
·        
The ‘army worm’
which attack paddy is the larvae of
Spodoptera
mauritia

·        
Ustilaginoidea sp. – False smut of
Paddy

·        
Cosmopolites
sordidus
is the pest
of Banana

·        
Citrus canker (Xanthomonas axonopodis pv citri)
·        
Red rust of tea -Cephaleuros
parasiticus

·        
Red rust of tea: caused by an alga
·        
Coffee rust –hemileia vastatrix fungus.
·        
Yellow vein mosaic of ladies finger – Begomovirus
·        
Late blight of Potato – Phytophthora
infestans

·        
Red rot of Sugarcane – Colletorichum
·        
Quick wilt of pepper – Phytophthora
capsici

·        
Coffee rust -Hemileia vastatrix
·        
Pink disease of rubber is caused by
Corticium salmonicolor

·        
Powdery mildew of rubber -Oidium
heveae

·        
Late blight of potato -Phytophthora
infestans

·        
Alternaria – Early blight of potato
·        
Ustilago –  Loose smut of wheat
·        
Peronosporales – Downy mildews
·        
Hemileia sp. -Coffee rust
·        
Oidium sp- Powdery mildew of Rubber
·        
Bengal famine was
caused by Helminthosporium oryzae

·Symptoms of Leaf spot of Mango are water-soaked, irregular, black lesions
surrounded by chlorotic halos. Due to vein limitations, the spots become
angular and result in cankerous, rough, necrotic, raised lesions. Name the
causative: Xanthomonas campestris



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