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Plant Pathology > Exam 1 Terms > Flashcards

Exam 1 Terms Flashcards

1
Q

Hyphae

A

A branch of a mycelium

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2
Q

Mycelium

A

The hypha or mass of hypha that make up the body of a fungus

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3
Q

Oospores

A

Sexual spores produced by the union of two morphologically different gametangia (oogonium and antheridium)

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4
Q

Sporangium

A

A container or case of asexual spores. In some cases it functions as a single spore.

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5
Q

Sporangiophore

A

A specialized hypha bearing one or more sporangia.

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6
Q

Zoospore

A

A motile spore.

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7
Q

Appressorium

A

The swollen tip of a hypha or germ tube that facilitates attachment and penetration of the host by a fungus.

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8
Q

Haustorium

A

A simple or branched projection of hyphae into host cells that attacks a hosting organ.

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9
Q

Penetration peg

A

A hyphae protruding from an appresorium that penetrates into the host.

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10
Q

Zygospore

A

The sexual or resting spore of zygomycetes produced by the fusion of two morphologically similar gametangia.

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11
Q

Encysted zoospore

A

A zoospore that has retracted it’s flagella into a survival structure.

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12
Q

Antheridium

A

The male sexual organ found in some fungi and oomycetes.

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13
Q

Oogonium

A

The female gametangium of oomycetes containing one or more gamates.

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14
Q

Plasmodium

A

A naked, slimy mass of protoplasm containing numerous nuclei.

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15
Q

Oomycete

A

A fungus like chromistan that produces oospores, water mold.

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16
Q

Plasmodiophoromycete

A

A class of protists that are parasites of plants.

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17
Q

Myxomycete

A

Slime Mold

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18
Q

Chytridiomycete

A

Chytridiomycetes is a class of fungi. Members are found in soil, fresh water, and saline estuaries. They are primitive fungi. Have motile spores and no septa.

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19
Q

Zygomycete

A

Ceocytic fungi.

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20
Q

Zygospore

A

Sexual resting spore or Zygomycetes.

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21
Q

Ascomycete

A

Sac fungi

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22
Q

Ascospore

A

A sexually produced spore borne in an ascus.

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23
Q

Ascus

A

A sac like cell of a hypha in which meiosis and occurs and that contains ascospores.

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24
Q

Ascocarp

A

Reproductive sturcture of ascomycetes.

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25
Q

Chasmothecium

A

Spherical ascocarp

26
Q

Perithecium

A

Flask shaped ascocarp

27
Q

Apothecium

A

Cup shaped ascocarp

28
Q

Naked Asci

A

Asci that are not contained within an ascocarp.

29
Q

Conidia

A

Asexual fungal spore formed at the end of a conidiophore.

30
Q

Conidiophore

A

A specialized fungal hyphae that bears conidia

31
Q

Sporocarps

A

The reproductive structure of Deutromycetes

32
Q

Pycnidium

A

Flask shaped sporocarp

33
Q

Acervulus (and setae)

A

A subepidermal, saucer shaped, asexual fruiting body that produces conidia

34
Q

Sporodochium

A

A fruiting structure consisting of a cluster of conidiophores woven together in a mass of hyphae.

35
Q

Synnema

A

A synnema is a large, erect reproductive structure borne by some fungi, bearing compact conidiophores, which fuse together to form a strand resembling a stalk of wheat, with conidia at the end or on the edges.

36
Q

Sclerotia

A

A compact mass of hyphae with or without host tissue, usually with a darkened rind, and capable of surviving under unfavorable conditions

37
Q

Microsclerotia

A

Microscopic sized sclerotia

38
Q

Chlamydospore

A

A thick-walled asexual spore formed by the modifications of a cell of a fungus hyphae

39
Q

Coffin Ship

A

Ships that the Irish died on waiting to get into the US

40
Q

Black ‘47

A

The year in which the most deaths happened during the Irish Potato Famine

41
Q

Anastamosis

A

Hyphal fusion resulting in the intercommunication of their genetic material

42
Q

Vegetative Compatibility Groups

A

Heterothallic or homothallic

43
Q

Tylosis

A

An overgrowth of the protoplast of a parenchyma cell into an adjacent xylem vessel or a tracheid.

44
Q

Clamp Connections

A

A mechanism used to maintain the dikaryotic state of some fungi

45
Q

Basidium

A

A club shaped structure on which basidiospores are borne

46
Q

Basidiospores

A

A sexually produced spore borne on a basidium

47
Q

Sterigmata

A

A slender protrubance on a basidium that supports the basidiospore.

48
Q

Basidiocarp

A

The structure bearing basidia

49
Q

Rust

A

A disease giving a “rusty” appearance to a plant and caused by one of the Uredinales

50
Q

Smut

A

A diseased caused by smut fungi (Ustilaginales) characterized by masses of dark, powdery, and sometimes odorous spores

51
Q

Uredium

A

The fruiting structure of rust fungi in which the uredospores are produced.

52
Q

Urediospores

A

Asexual Rust spores that infect the host on which they are produced.

53
Q

Telium

A

The fruiting structure in which rust teliospores are produced

54
Q

Teliospores

A

The sexual, thick walled resting spore of rusts and smuts

55
Q

Aecium

A

A cup shaped fruiting body of rust fungi that produces aeciospores

56
Q

Aeciospores

A

Spores produced within an Aecium

57
Q

Spermagonium

A

A fruiting body of rust fungi in which gametes or gametangia are produced.

58
Q

Spermatia

A

The male gamete of rust fungi

59
Q

White Rot

A

Break down lignins

60
Q

Brown Rot

A

Break down hemicellulose and cellulose

61
Q

Rugosity

A

Mis-shappen growth of leaves due to usually a plant virus.

Plant Pathology (1 decks)

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