Rhizosphere microbial community of the nickel hyperaccumulator, Alyssum serpyllifolium subsp. lusitanicum.

摘要：

Rhizosphere microbial populations may enhance metal bioavailability, plant growth and resistance to metals. Physiological groups of soil microorganisms associated with three populations of the Ni hyperaccumulator, Alyssum serpyllifolium, and the non hy peraccurnulator, Dactylis glomerata, and their resistance to Ni, Co and Cr, were evaluated. Alyssum serpyllifolium harbours greater densities of heterotrophic bacteria, ammonifiers and amylolytics, and Ni- and Co- resistant bacteria. However, this was only observed in two of the three populations studied. Metal tolerance followed the order Ni>Co>Cr. In all three populations, Alyssum serpyllifolium enhanced densities of amylase-producing bacteria at the rhizosphere.

关键词： Alyssum serpyllifolium amylolytics hyperaccumulator microbial community rhizosphere

作者: C. Becerra Castro C.Monterroso M. Garcia Lest A. Prieto-Fern ndez M. J. Acea P. S. Kidd

作者单位: Instituto de Investigaciones Agrobiol gicas de Galicia (IIAG), Consejo Superior de Investigaciones C Departamento de Edafolog a y Qu mica Agr cola, Universidad de Santiago de Compostela, 15786 Santiag

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: 157-159

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）