Mycorrhizal diversity of stevia (Stevia rebaudiana Bertoni) rhizosphere in Tawangmangu, Indonesia

D Y Astuti, Parjanto and V R Cahyani
Published under licence by IOP Publishing Ltd
IOP Conference Series: Earth and Environmental Science, Volume 129, conference 1

Abstract
Mycorrhizal fungi are a group of soil fungi with mutualistic symbiosis between fungi and plant roots. The diversity on mycorrhiza contributes to the maintenance of plant biodiversity, ecosystem function, and plant productivity. Climate change may affect the distribution and diversity of mycorrhizal fungi, and thus the study on mycorrhizal diversity is important to develop the information about mycorrhizal function and utilization. The present study investigated mycorrhizal diversity in the rhizosphere of stevia at four locations in different altitudes and soil types. The samples were taken from Tlogodlingo (Andisols 1), Kalisoro (Andisols 2), Nglurah (Alfisols 1) and Ledoksari (Alfisols 2) in Tawangmangu, Karanganyar, Central Java, Indonesia. The result showed that Glomus sp. and Acaulospora sp. were the common genus found at all locations, whereas Gigaspora sp. was the only species found in the acidic Alfisol soil. Statistical analysis indicated that altitude, soil pH, and P availability significantly positively correlated with mycorrhizal spore density. The increase of altitude, soil pH, and P availability, also increase the mycorrhizal spore density. Mycorrhizal infectivity negatively correlated with C/N ratio.

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Impact of depletion or enhance of capability of resources of air, water, soil, and vegetation