Arbuscular mycorrhizal status of spring ephemerals in the desert ecosystem of Junggar Basin, China

A survey was made of the arbuscular mycorrhizal (AM) status of 73 spring ephemeral plant species that grow in the desert ecosystem of Junggar Basin, northwest China. The proportion of AM colonization ranged from 7 to 73% with a mean value of 30%. A total of 65 plant species studied were AM with coil...

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Veröffentlicht in:Mycorrhiza 2006-06, Vol.16 (4), p.269-275
Hauptverfasser: Shi, Z.Y, Feng, G, Christie, P, Li, X.L
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Christie, P
Li, X.L
description A survey was made of the arbuscular mycorrhizal (AM) status of 73 spring ephemeral plant species that grow in the desert ecosystem of Junggar Basin, northwest China. The proportion of AM colonization ranged from 7 to 73% with a mean value of 30%. A total of 65 plant species studied were AM with coils/arbuscules or vesicles and the remaining eight species were possibly AM with no coils/arbuscules or vesicles but with fungal mycelia in the root cortex. AM fungal spores were isolated from rhizosphere samples of all 73 plant species and identified. The mean spore density was 22 per 20 ml of air-dried soil, ranging from 0 to 120. Colonization and spore density of perennials were slightly higher than of annuals and varied among different plant families. A total of 603 AM fungal spore (or sporocarp) specimens were isolated belonging to six genera, Acaulospora, Archaeopora, Entrophospora, Glomus, Paraglomus, and Scutellospora; Glomus was the dominant genus. We conclude that spring ephemerals may be highly dependent on AM associations for survival in the very infertile and arid soils of this desert ecosystem.
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The proportion of AM colonization ranged from 7 to 73% with a mean value of 30%. A total of 65 plant species studied were AM with coils/arbuscules or vesicles and the remaining eight species were possibly AM with no coils/arbuscules or vesicles but with fungal mycelia in the root cortex. AM fungal spores were isolated from rhizosphere samples of all 73 plant species and identified. The mean spore density was 22 per 20 ml of air-dried soil, ranging from 0 to 120. Colonization and spore density of perennials were slightly higher than of annuals and varied among different plant families. A total of 603 AM fungal spore (or sporocarp) specimens were isolated belonging to six genera, Acaulospora, Archaeopora, Entrophospora, Glomus, Paraglomus, and Scutellospora; Glomus was the dominant genus. We conclude that spring ephemerals may be highly dependent on AM associations for survival in the very infertile and arid soils of this desert ecosystem.</abstract><cop>Berlin</cop><pub>Springer</pub><pmid>16568336</pmid><doi>10.1007/s00572-006-0041-1</doi><tpages>7</tpages></addata></record>
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subjects Acaulospora
Archaeopora
arid soils
Biological and medical sciences
China
Colonization
Colony Count, Microbial
Desert Climate
desert soils
Deserts
Ecosystem
Ecosystems
Entrophospora
Flowers & plants
Fundamental and applied biological sciences. Psychology
Fungi
Glomus
inoculum density
Mycorrhizae - classification
Mycorrhizae - isolation & purification
mycorrhizal fungi
Paraglomus
Parasitism and symbiosis
plant communities
Plant physiology and development
Plant species
Plants - microbiology
Rhizosphere
roots
Scutellospora
Seasons
soil fungi
species diversity
Species Specificity
Spores - classification
Spores - isolation & purification
Symbiosis
vesicular arbuscular mycorrhizae
xerophytes
title Arbuscular mycorrhizal status of spring ephemerals in the desert ecosystem of Junggar Basin, China
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