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- Title
COMPARATIVE DEVELOPMENT OF INFECTION BY THREE VESICULAR-ARBUSCULAR MYCORRHIZAL FUNGI.
- Authors
Wilson, J. M.
- Abstract
The effect of inoculum density on the development of infection by <em>Gigaspora decipiens</em> Hall and Abbott, <em>Glomus fasciculatum</em> (Thaxter <em>sensu</em> Gerdemann) Gerdemann and Trappe and <em>Glomus tenue</em> Greenall (Hall) was investigated. From individual propagules, infection increased logarithmically for each fungus but, at higher inoculum levels, the infectivities differed. Of the three fungi, <em>Gi. Decipiens</em> was the least, and <em>Gl. Fasciculatum</em> the most infective. The fungi showed different strategies for infection spread. <em>Glomus fasciculatum</em> produced larger infection segments, and spread within the root more extensively than the other fungi. <em>Gigaspora decipiens</em> and <em>Gl. tenue</em> were more dependent on external spread by the formation of secondary entry points. The intensity of infections was affected by inoculum density, but not by the age of the infection.
- Subjects
MYCORRHIZAL fungi; SOIL fungi; GLOMUS (Fungi); ENDOGONACEAE; PARASITIC plants; CRYPTOGAMS
- Publication
New Phytologist, 1984, Vol 97, Issue 3, p413
- ISSN
0028-646X
- Publication type
Article
- DOI
10.1111/j.1469-8137.1984.tb03607.x