Taxonomy and Ecology Of Inland Sand Dune ... - Mycorrhizae

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30TABLE 1 (Continued)
31G. dominkii is the most abundant species(occurs on 44% of the most commonhosts), follow by G. aggregatum and G.mosseae, each at about 35% occurrence.Scutellospora pellucida occurs on 22%of the hosts, Entrophospora infrequensat 13%, and Gigaspora albida andGigaspora candida, each at about 4%occurrence.Reeves et al. (1979) reported VAMfungi in O. hymenoides. A subsequentreport indicated that this species was notmycorrhizal (Wullstein and Pratt, 1981).My reexamination of O. hymenoidesrevealed colonization by mycorrhizalfungi in roots collected from isolatedplants as well as from plants growing inmixed vegetation on sand dunes.Furthermore, samples of soil fromaround the roots of isolated O.hymenoides plants supported formationof VAM in maize. O. hymenoidessupports eight different VAM fungaltaxa.C. UNDESCRIBED SPECIESOne undescribed VAM fungal specieswas encountered during this study. Thisspecies was associated with twodifferent plant species on the dunes.Glomus sp (FIG. 2)Sporocarps: unknown.Spores: globose to subglobose, (130.6-)162.6 (-192.0) x (128.0-) 158.5 (-192.0)µm diam, produced singly or in looseclusters in soil or on plants roots; youngspores yellow, intermediate-aged sporesbrown, and mature spores black in waterand in polyvinyl alcohol (PVA).Walls of spore: spore with two walls intwo groups. Outer wall is a unit wall,yellow-brown in color, and sloughedfrom the spore when broken; soilparticles, fungal hyphae and organicmatter adhere; thickness ranges from(5.1-) 9.4 (-20.5) µm. Inner wall ismultilaminate, black, and thicknessranges from (10.2-) 12.2 (-15.4) µm;both walls continue down the subtendinghyphae; the dark color graduallydisappears away from the spore base.Subtending hypha: single, constricted,and attached to the spore by a very smallopening (
Page 1 and 2: Taxonomy and EcologyOf Inland Sand
Page 3 and 4: AbstractAgropyron inerme root syste
Page 5 and 6: IntroductionInland sand dunes in Co
Page 7 and 8: 3Literature Review"Mycorrhiza" is a
Page 9 and 10: 5nonsporocarpic, and produced spore
Page 11 and 12: 7Spores of VAM fungi are multinucle
Page 13 and 14: 9germination shield is formed, andg
Page 15 and 16: 11wall thickening or spore inner wa
Page 17 and 18: 13especially phosphate ions, some o
Page 19 and 20: 15by the relative location of GOT a
Page 21 and 22: 17D. DIFFICULTIES IN VAMFUNGAL TAXO
Page 23 and 24: 19fungi are distributed over a wide
Page 25 and 26: 21dune plants, the development of e
Page 27 and 28: 23annually, a mean annual temperatu
Page 29 and 30: 25C. EFFECTS OF SOIL DEPTH,MOISTURE
Page 31 and 32: 27vegetated quadrats on each of the
Page 33: 29Table 1 Occurrence of genera and
Page 37 and 38: 33abc d eFIG. 2 Glomus sp Light and
Page 39 and 40: 35percent usually was strongly infl
Page 41 and 42: 37FIG. 8 Regression of mycorrhizali
Page 43 and 44: 39July transect data analyses (TABL
Page 45 and 46: 41significantly with changes in the
Page 47 and 48: 43FIG. 10 Regression of mycorrhizal
Page 49 and 50: 45the July transect (FIG. 15). Howe
Page 51 and 52: 47FIG. 17 Regression of mycorrhizal
Page 53 and 54: 49C. COMPARISONS OF VAMCOLONIZATION
Page 55 and 56: 51the survival strategies that adap
Page 57 and 58: 53association with other species. T
Page 59 and 60: 55believe the overriding factor is
Page 61 and 62: 57my understanding of the ecology o
Page 63 and 64: 59that soil characteristics and dis
Page 65: 60AKNOWLEDGEMENTSI would like to ex
Page 68 and 69: 61Allen, M. F., J. A. MacMahon, and
Page 70 and 71: 63Bolgiano, N. C., G. R. Safir, and
Page 72 and 73: 65mycorrhizal fungi: a determinant
Page 74 and 75: 67Hayman, D. 1982. Influence of soi
Page 76 and 77: 69Koske, R. E. 1985. Glomusaggregat
Page 78 and 79: 71Morton, J. B. 1986. Three new spe
Page 80 and 81: 73Powell, C. L., and D. J. Bagyaraj
Page 82 and 83: 75Simon, L., M. Lalonde, and T. D.
Page 84 and 85:
77Trappe, J. M. 1982. Synoptic keys
Page 86:
79Wullstein, L. H., and S. A. Pratt
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Taxonomy and Ecology Of Inland Sand Dune ... - Mycorrhizae

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