DISTRIBUTION OF ARBUSCULAR MYCORRHIZAL FUNGI ASSOCIATED WITH LANDSCAPE TREE GROWTH IN INDIAN THAR DESERT
|Mrs. Sonia Bohra* and Dr. Anil Vyas
Department of Botany, J.N.V.University, Jodhpur, Rajasthan, India.
|Corresponding Author: Mrs. Sonia Bohra, E-mail: [email protected]|
|Received: 01 December 2012 Accepted: 09 December 2012|
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Field and glasshouse pot studies were conducted to determine effects of urban expansion on arbuscular mycorrhizal fungal (AMF) populations and AMF impact on landscape tree growth. Soil and root segments were collected and evaluated for root colonization by AMF of trees at semi arid region sites and nearby, formerly desert, drip-irrigated residential landscape sites in the Jodhpur, Rajasthan, India. Native desert trees had greater colonization by AMF than residential landscape trees, and AMF species composition differed at the two site types. A glasshouse pot experiment using AMF inocula from the desert or residential sites was used to evaluate AMF effects on growth of two landscape trees in pots relative to non-AMF controls. Growth and P nutrition of Acacia nilotica and Acacia senegal were increased by AMF colonization. We conclude that AMF might significantly increase landscape tree carbon storage potential depending on tree species, AMF population characteristics, soil water availability, and improved P uptake.