Mycorrhizae-assisted phytoextraction using an intercropping system consisted of Brassica juncea and Zea mays
A greenhouse study with split pot technology was conducted to examine the phytoremediation effects of an intercropping system consisting of Brassica juncea and Zea mays with mycorrhizal inoculation (Glornus mosseae). The plants were separated by (1) an impermeable barrier, (2) a permeable root barrier (500-mesh nylon net), or no physical barrier to allow different degrees of plant root intermingle and mycorrhizal hyphae exploration. Mycorrhizal inoculation significantly (P<0. 01) stimulated the growth of both plants, resulting in a much higher aboveground biomass within hyphal reach, irrespective of host and nonmycorrhizal plants. This could be attributed to the detoxicification effect caused by the presence of mycorrhizae. Inoculation of mycorrhiza substan-tially decreased the metal concentration in the shoot of Z. mays by 31.4％, 40. 2％ and 9. 70％ for Zn, Pb and Cd, respectively. The highest metal removal was achieved in the treatment inoculated by AMF and without barrier (except Cu), which was twice that ofpots without mycorrhizal inoculation, but with an impermeable barrier. These results imply that it may be possible to develop a new phytoextraction strategy with an intercropping system consisting of high yielding mycorrhizal plant and metal accu-mulators/ hyperaccumulators.
Arbusuclar mycorrhizal fungi intercropping system pot trial
S. C. Wu K. C. Cheung Y. M. Luo M. H. Wong
Croucher Institute for Environmental Sciences and Department of Biology, Hong Kong Baptist Universit Institute of Soil Science, Chinese Academy of Sciences, Nanjing, PR China Joint Open Laboratory on S
国际会议
第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)
北京
英文
564-565
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）