Arbuscular mycorrhizal fungal association in Asteraceae plants growing in the arid lands of Saudi Arabia

作     者：Partha P DHAR Abdul A AL-QARAWI Mohammed A U MRIDHA 

作者机构：Plant Production Department College of Food and Agricultural Sciences King Saud University 

出 版 物：《Journal of Arid Land》 (干旱区科学（英文版）)

年 卷 期：2015年第7卷第5期

页      面：676-686页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：financially supported by the Deanship of Scientific Research  College of Food and Agriculture  King Saud University  Saudi Arabia 

主　　题：arbuscular mycorrhizal fungi arid land Asteraceae biodiversity colonization Saudi Arabia 

摘      要：The present research was undertaken to explor the possibility of arbuscular mycorrhizal （AM） associa- tion with Asteraceae plants in the arid lands of Saudi Arabia （AI-Ghat, Buraydah, Thumamah and Huraymila）. AM fungal colonization in the roots, spore numbers in the rhizosphere soil, fungal species diversity and correlation between AM properties and soil properties were determined. The highest colonization was in Conyza bonariensis （65%） from AI-Ghat, Anthemis cotula （52%） from Buraydah and C. bonariensis （53%） from Thumamah. The lowest was in Vernonia schimperi （41%） from AI-Ghat, Pulicaria undulata （25%） from Buraydah, Acanthospermum his- pidum （34%） from Thumamah, Asteriscus graveolens （22%） and V. schimperi （22%） from Huraymila. Vesicular and arbuscular colonization were also presented in all plant species examined. The number of spores were 112-207 in AI-Ghat, 113-133 in Buraydah, 87-148 in Thumamah and 107-158 in Huraymila. Funneliformis mosseae, Glomus etunicatum, G. fasciculatum and G aggregatum were identified. Relative frequency of AM fungal species varied widely and was irrespective of location and plant species. Diversity index varied with the rhizosphere soils of dif- ferent plant species at various locations. Soil properties varied with locations and no distinct correlations were ob- served among the soil properties, root colonization and the number of spores. The results of the present study specified the association of AM fungi in different plants of Asteraceae and its significance in the ecological func- tioning of annual plants in the punitive environments of the rangelands in Saudi Arabia.