DEVELOPMENT OF SPORES AND CHARACTERS OF MYCORRHIZAE
OF THE GENUS GIGASPORA
In PVLG |
Apart from spores, Gigaspora spp. also form clusters of auxiliary cells. They are echinulate with spines.
Interspecies differences in members of the genus Gigaspora reside in colour and size of spores (Bentivenga and Morton 1995). At present, this genus comprises only five species.
The mycorrhizae of Gigaspora spp. consist of only arbuscules and hyphae staining darkly in trypan blue or other stains; no vesicles are produced (Bentivenga and Morton 1995). Arbuscules generally form fine branches directly from a swollen basal hypha. Intraradical hyphae are straight to coiled and vary in diameter because of the presence knob-like projections and inflated areas.
REFERENCES
Bentivenga S., P., Morton J. B. 1995. A monograph of the genus Gigaspora, incorporating developmental patterns of morphological characters. Mycologia 87, 719-731.
Walker C., Sanders F. E. 1986. Taxonomic concepts in the Endogonaceae: III. The separation of Scutellospora gen. nov. from Gigaspora Gerd. & Trappe. Mycotaxon 27, 169-182.