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Diversity of arbuscular mycorrhizal fungi associated with desert ephemerals growing under and beyond the canopies of Tamarisk shrubs

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Chinese Science Bulletin

Abstract

The arbuscular mycorrhizal (AM) fungal status of the four most common ephemeral plant species, Chorispora tenella (Pall.) DC., Ceratocephalus testiculatus (Crantz) Bess., Eremopyrum orientale (L.) Jaub et. Spash and Veronica campylopoda Boiss growing in an area dominated by Tamarisk shrubs (Tamarix spp.) was investigated. Samples of the four ephemerals and their rhizosphere soils were collected from underneath and beyond the canopies of the Tamarisk shrubs. Plant mycorrhizal status and soil AM fungal spore densities and community structures were analyzed and compared under and beyond the shrub canopies. The mycorrhizal colonization rates of the ephemerals and spore densities in their corresponding rhizosphere soils were significantly lower under the shrub canopies than beyond. The number of AM fungal species under the shrubs (12) was also lower than beyond the canopies (19). When soil properties in the rhizospheres of the four ephemerals were examined, available N and P and total P, organic matter content, total salt content and electrical conductivity (EC) were all higher under the canopies than beyond. In contrast, soil available K and pH showed no such trend. A total of 21 AM fungal species were isolated from rhizosphere soils of the four ephemerals. Five belonged to Acaulospora, one to Archaeospora, thirteen to Glomus and two to Paraglomus. We conclude that the canopies of Tamarix spp. exerted some influence on the AM status of the ephemerals and on the AM fungal communities and some of the properties of their rhizosphere soils.

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Authors and Affiliations

  1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China

    Shi Zhaoyong, Zhang Liyun & Tian Changyan

  2. College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100094, China

    Shi Zhaoyong, Feng Gu, Christie Peter & Li Xiaolin

  3. Agricultural and Environmental Science Department, Queen’s University Belfast, Belfast, BT9 PX, UK

    Christie Peter

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  1. Shi Zhaoyong
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  2. Zhang Liyun
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  3. Feng Gu
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  4. Christie Peter
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  5. Tian Changyan
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  6. Li Xiaolin
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Correspondence to Feng Gu.

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Shi, Z., Zhang, L., Feng, G. et al. Diversity of arbuscular mycorrhizal fungi associated with desert ephemerals growing under and beyond the canopies of Tamarisk shrubs. CHINESE SCI BULL 51 (Suppl 1), 132–139 (2006). https://doi.org/10.1007/s11434-006-8217-9

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  • DOI: https://doi.org/10.1007/s11434-006-8217-9

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