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Plant pathology > L4 > Flashcards

L4 Flashcards

1
Q

Fire blight Pathogen

A

Erwinia amylovera

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2
Q

Fire blight 🔥

Host

A

Apple 🍎 and pear 🍐

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3
Q

On blossom, flora receptacles, ovary & peduncle. Eventually tissues shrivels & turn black.

A

Fire blight

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4
Q

Citrus canker Pathogen

A

Xanthomonas campestris

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5
Q

Necrotic die-back, premature fruit drop & blemishes. (Severely infected) weak, unproductive, unprofitable.

A

Citrus canker

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6
Q

Bacterial blight

Pathogen

A

Xanthomonas axonopodis

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7
Q

Bacterial blight

Host

A

Pomegranate

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8
Q

Under favorable conditions spots enlarge to become raised, dark & crack

A

Bacterial blight

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9
Q

Bacterial mosaic

Pathogen

A

Clavibacter michiganense (sups.Tesselarius)

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10
Q

Bacterial mosaic

Host

A

Wheat 🌾

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11
Q

The pathogen attacks triticale. This mosaic effect is produced by uniformly distributed small yellow lesions, with ill defined margins

A

Bacterial mosaic

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12
Q

Bacterial speck

Pathogen

A

Pseudomonas syringae

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13
Q

Bacterial speck host

A

Tomato

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14
Q

Black specks, yellow halo. Expansion of leaf tissue

A

Bacterial speck

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15
Q

Bacterial wilt

Phathogen

A

Pseudomonas solancearum

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16
Q

Wilting of the foliage followed by collapse. Yellowing

A

Bacterial wilt

17
Q

Yellow vine disease

Phatogen

A

Serrata mrcescence

18
Q

Yellow vine disease

Host

A

Cucurbits

19
Q

Terminal leaves stand erect, fail to expand. Margin curls. ((Older leaves)) develop scorched margins & may die. Eventually the roots decline & die

A

Yellow vine disease

20
Q

Tobacco mosaic virus TMV genus

A

tobamovirus

21
Q

Tobacco mosaic virus TMV

Host

A

Tobacco

22
Q

ssRNA, rigid helical shape. Extremely stablestructure

A

Tobacco mosaic virus TMV

23
Q

Cauliflower mosaic virus (CaMV)

A

Caulimovirus

24
Q

Cauliflower mosaic virus (CaMV) host

A

Cauliflower

25
Q

Icosahedral. dsDNA.
virus (CaMV)
Multilayered capsid

A

Cauliflower mosaic virus (CaMV) host

26
Q

Tomato yellow leaves curl virus TYLCV phathogen

A

B eg om o v i ru s

27
Q

Tomato yellow leaves curl virus TYLCV host

A

Tomato

28
Q

Twinned morphology.
One of the most devastating viral diseases. More severe @ early age. Curling leaves, chlorotic leaves 🍁 reduced size & stunt

A

Tomato yellow leaves curl virus TYLCV

Plant pathology (2 decks)

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