Mycorrhizal symbiosis and Cr tolerance in maize (Zea mays)

摘要：

A pot experiment was conducted to examine the mechanisms involved in alleviation of chromium toxicity in maize plants utilizing mycorrhizal symbiosis. A red sandy loam soil (Alfisol) was spiked with different concentrations of chromium (0, 500, 100, 1500 and 2000mg/kg of soil). After establishment of functional symbiosis by the arbuscular mycorrhizal fungus Glomus intraradices, root and shoot samples were harvested and analyzed for chromium. The data revealed that increasing concentrations of chromium correspondingly increased the uptake of chromium by mycorrhizal (M<+>) and nonmycorrhizal (M<+>) maize. However, mycorrhizal plants (M<+>) accumulated very high chromium concentration which was approximately four times greater than that of shoots, suggesting that chromium accumulated within the root, keeping the aerial portion free from chromium.

关键词： Glomus intraradices chromium maize

作者: M. Gomathy M. Thangaraju K. S. Subramanian

作者单位: Department of Agricultural Microbiology, Tamil Nadu Agricultural University, Coimbatore, 641003, Tam Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbator

会议类型: 国际会议

会议名称: 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)

会议地点: 北京

会议语种:英文

页码: 528-529

在线出版日期: 2007-07-15（万方平台首次上网日期，不代表论文的发表时间）