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germ tube

Listing 1 - 10 from 26 for germ tube

Mycology - Taxonomy - Ascomycota
... conidia are specialised thallic conidia formed in chains that disarticulate readily. Conidia mostly germinate by germ tube extension. In a few cases, conidia germinate to form yeast cells, or to form a ...
bugs.bio.usyd.edu.au

Mycology Glossary - A through B
... sporangiospore. Apothecium cup shaped ascocarp. Hymenium is exposed at maturity. Appressorium a swelling on a germ tube or hyphae, often terminal, which may attach to the surface, especially in development of colonisation ...
bugs.bio.usyd.edu.au
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nvps journal:PRELIMINARY REPORT ON STEM AND ROOT ROT OF VIOLA AND PANSY
... -24 x 23; H-24 x 22 microns) and constantly germinate by means of a germ tube (Fig 1.E and F). On comparing the rates of growth of the three species ...
myweb.tiscali.co.uk

Downy Mildew of Grape, HYG-3013-95
... spores, called zoospores. Zoospores, which also are spread by splashing rain, germinate by producing a germ tube that enters the leaf through stomates (tiny pores) on the lower leaf surface. The optimum ...
ohioline.osu.edu

Leather Rot of Strawberry, HYG-3201-95
... . In the presence of free water on the fruit surface, the zoospores germinate forming a germ tube and infect the fruit. In later stages of infection, sporangia are produced on the surface ...
ohioline.osu.edu
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Disease Cycle
... present. Germination takes place either indirectly via zoospores (Fig. 3 right) or directly via a germ tube that penetrates into foliage, stems, or fruit to initiate infections. Infections are visible as small ...
ppathw3.cals.cornell.edu

On-Line Glossary: A
... by fungal tissue at maturity. (Pl. apothecia.) (15) appressorium. An enlargement on a hypha or germ tube that attaches itself to the host before penetration takes place. (Pl. appressoria.) (15) arbuscule. Of ...
ppathw3.cals.cornell.edu
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APSnet Education Center - Laboratory Exercises in Plant Pathology - Cytology of Fungal Infection
... in this laboratory are: -the germ tube, a slim fungal tube emerging from the spore upon germination -the appressorium, a swollen structure at the end of a germ tube which attaches to the plant cell ... Lab Section Results Number of conidia at cytological stage indicated Incubation Period (hr) Ungerminated With germ tube only Immature appressoriuma Mature appressoriumb Infection hypha 0 1 2 7-8 14-16 24 ...
www.apsnet.org

APSnet Education Center - Lab Exercise - Oomycetes
... Courtesy P.B. Hamm) Sporangia of some species are capable of germinating either by direct germ tube formation or indirectly by zoospore formation. The type of germination is influenced most ... irrigation water. On susceptible plant surfaces, zoospores encyst and then germinate by producing a germ tube. Sexual reproduction in Oomycetes occurs between two dissimilar gametangia: a large round oogonium ...
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untitled
... a rhizome. 4. The protrusion and growth of the pollen tube from the pollen grain. GERMINATIVE: Pertaining to germination; capable of germination. GERM TUBE: A tubular, thread-like growth first formed by most ...
www.botany.com




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