US EPA

165551 

Journal Article 

Survival strategiesf plants associated with arbuscular mycorrhizal fungin toxic mine tailings 

Leung, HM; Ye, ZH; Wong, MH 

2007 

Yes 

Chemosphere
ISSN: 0045-6535
EISSN: 1879-1298 

66 

5 

905-915 

English 

16872660 

10.1016/j.chemosphere.2006.06.037 

WOS:000243829700015 

A field surveyf metal concentrations and arbuscular mycorrhizal (AM) componentsf plants growingn five mining sites was conductedn Chenzhou City, Hunan Province, Southern China and a control siten Hong Kong. Significantifferences werebservedn the average concentrationsf total heavy metals (Pb, Zn, Cu, Cd) andne metalloid (As)n contaminated soils compared with the control site. Gramineae and Compositae were theominant plant families growingn mine tailings, with Chrysanthemum moritolium (common chrysanthemum), Cynodonactylon (Bermuda grass), Miscanthus florodulus (Sword grass) and Pteris vittata (Ladder brake fern) commonly found at all sites. AM fungal colonization wasetectedn mostf the plants. Comparing the four common plant species, three componentsf mycorrhizal colonization (arbuscules, vesicles and coiled hyphae) were foundn the rootsf C.actylon and P. vittata growing at Do Shun Long (DSL) mine site. Concentrationsf Asn fronds were 24-fold higher thann rootsf P. vittata with the highest mycorrhizal colonization rate (73%) among all sampling sites. Extensive mycorrhizal colonization (85%) was also recordedn the rootsf C.actylon with As accumulation 57 times higher thann shoots. The four common plants foundn metal contaminated sites hadevelopedifferent strategies for survivaln the contaminated sites with the aidfndigenous AM fungi. 

Arsenic/analysis/metabolism; China; Hong Kong; Industrial Waste; Metals, Heavy/analysis/ metabolism; Mining; Mycorrhizae; Plant Roots/metabolism/microbiology; Plants/ metabolism/ microbiology; Soil Pollutants/analysis/ metabolism