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ARBUSCULAR MYCORRHIZAL FUNGAL COLONIZATION IMPROVES  REGROWTH  OF  BERMUDAGRASS (CYNODON DACTYLON L.) AFTER CUTTING

JIN WU¹, BIN SUN², YUTAO WANG¹, GUORONG XIN^1,*, SHAOPING YE¹ AND SHAOLIN PENG¹

Abstract: The interations of plant regrowth, non-structural carbonhydrate (total soluble carbohydrate, glucose, surcose, fructose and starch) concentrations and arbuscular mycorrhizal fungi (AMF) was examined in Bermudagrass (Cynodon dactylon (L.) Pers. cv. Banana) at 0, 1, 2, 4, 6, 12, 18, 24 days after cutting. AMF colonization of Bermudagrass was significantly increased; aboveground dry weight of Bermudagrass colonized by AMF were significantly higher than that of non-mycorrhizal plants; the maximum of chlorophyll content of AMF colonized Bermudagrass was higher relative to non-mycorrhizal plants. The total concentrations of carbohydrate, fructose and starch in the roots of myccohizal plants were significantly lower than those in control plants, while the concentration of glucose in the roots of mycorrhizal plants was significantly higher than those of non-mycorrhizal plants. This study indicates that stimulation of plant regrowth by AMF may partly be attributed to stimulation of photosynthesis capability, and that glucose may be the main form of carbohydrate, which AMF absorb from their grass host.

¹State Key Laboratory of Bio-control, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China, ²Shenzhen Polytechnic, Shenzhen 518055, China.

*Corresponding author: lssxgr@mail.sysu.edu.cn