Record ID No. |
2799 |
Author(s) |
Wang MingYuan, Xia RenXue, Wang Peng. , 2010 |
Affiliation |
College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, China. renxuexia@mail.hzau.edu.cn |
Title |
Effects of arbuscular mycorrhizal fungi on available iron and metals sequestered by glomalin in different rhizospheric soil of Poncirus trifoliata |
Source. Vol.(no):Page |
Journal of Fujian Agriculture and Forestry University 39(1): 42-46p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Heavy Metals |
Host |
trifoliate orange (Poncirus trifoliata L. Raf) |
Organism |
Glomus versiforme |
Country |
China, Asia |
Abstracts |
Effects of available iron and metals sequestered by glomalin were studied on trifoliate orange (Poncirus trifoliata L. Raf) inoculated with arbuscular mycorrhizal (AM) fungus (Glomus versiforme). The experiment was carried out with pot culture by root confinement technique which divided the soil into 0-2, 2-4 and 4-8 cm in horizon. The results showed that AM fungus decreased the contents of available iron significantly, and the available iron contents of inoculated treatments were in the order 0-2 cm > 2-4 cm > 4-8 cm, however those were 4-8 cm > 2-4 cm > 0-2 cm in non-inoculated treatments. The hyphal length was in the order 0-2 cm > 2-4 cm > 4-8 cm, suggesting that AM hyphae could reach into the soil up to 4-8 cm away from the infection point. It seemed that easily extractable glomalin and total glomalin contents followed the same changes; 2-4 cm > 4-8 cm > 0-2 cm. Heavy metals bound to glomalin-related soil glomalin were recorded. The data indicated that Fe and Mn were the minimum in 4-8 cm soil level, however Zn and Cu were in 0-2 cm soil level, suggesting that glomalin could alleviate the toxicity from heavy metals on AM fungus, and had the buffer capacity on metals release and protection of AM fungus. |