Title Effects of a Dark-Septate Endophytic Isolate LBF-2 on the Medicinal Plant Lycium barbarum L.
Author Hai-han Zhang1, Ming Tang2*, Hui Chen2, and Ya-jun Wang3
Address 1College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China, 2College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China, 3Ningxia Wolfberry Engineering and Technology Research Center, Yinchuan, Ningxia 750002, P. R. China
Bibliography Journal of Microbiology, 50(1),91-96, 2012,
DOI
Key Words chlorophyll fluorescence, dark septate endophyte, Lycium barbarum, medicinal plant
Abstract Dark septate endophytes (DSE) are ubiquitous root associated fungi; however, our understanding of their ecological function remains unclear. Here, we investigated the positive effect of a DSE fungus on its host plant Lycium barbarum L. A DSE isolate, LBF-2, isolated from the roots of L. barbarum, was inoculated onto the roots of plants, which were grown under greenhouse conditions for five weeks. The result of molecular analyses of internal transcribed spacer regions indicated that LBF-2 was 96% similar to Paraphoma chrysanthemicola. Melanized septate hyphae were observed in the root cortical cells of L. barbarum using a light microscope. Inoculation with LBF-2 increased the total biomass by 39.2% and also enhanced chlorophyll fluorescence. Inoculation increased the concentration of total chlorophyll by 22.8% and of chlorophyll a by 21.3%, relative to uninoculated controls. These data indicate that the LBF-2 isolate might be used to facilitate the cultivation of L. barbarum, which has medicinal applications.