Typical Bacteria Flashcards
1
Q
PLANT PATHOGENIC PROKARYOTES
A
- bacteria
- fastidious bacteria
- mollicutes
2
Q
PROKARYOTES
A
- no membrane-bound organelles
- posses cell membrane
- possess 70S cytoplasmic ribosome
- cell wall made of peptidoglycan
3
Q
BACTERIA
A
- no defined nucleus
- rigid cell wall
- singe circular chromosome
- possess plasmid
4
Q
PLASMID
A
- independently producing DNA
5
Q
COMMON SHAPE OF PLANT BACTERIA
A
- rod
- filamentous
6
Q
REPRODUCTION OF BACTERIA
A
- binary fission
7
Q
MODE OF INVASION OF BACTERIA
A
- natural opening
- natural wound
8
Q
BIOLOGY OF BACTERIA
A
- facultative saprophytes
- obligate parasite
9
Q
FACULTATIVE SAPROPHYTE
A
- ordinarily parasite
- saprophyte in the absence of living host
10
Q
METHOD OF DISEASE INDUCTION OF BACTERIA
A
- tissue degradation by enzyme
- obstruction of water movement
- alteration of membrane permeability by toxin
- disruption of metabolism
- hypertrophic growth by hormone
11
Q
MAJOR GENERA OF PLANT PATHOGENIC BACTERIA
A
- Xanthomonas
- Ralstonia
- Pectobacterium
- Agrobacterium
- Corynebacterium
12
Q
PLANT DISEASES CAUSED BY BACTERIA
A
- blight (rice and anthurium)
- leaf spot (poinsettia)
- canker (citrus)
4.. wilt (tomato and eggplant) - soft rot (vegetable)
13
Q
RICE LEAF BLIGHT
A
Xanthomonas oryzae pv. oryzae
14
Q
ANTHURIUM BLIGHT
A
Xanthomonas axonopodis pv. diffenbachiae
15
Q
POINSETTIA LEAF SPOT
A
Xanthomonas axonopodis pv. poinsetticola
