title: Cd hyperaccumulative characteristics of Australia ecotype Solanum nigrum L. and its implication in screening hyperaccumulator.
abstract: A pot culture experiment was used to determine the differences in uptake characteristics of a cadmium hyperaccumulator Solanum nigrum L. discovered in China, an ecotype from Melbourne, Australia and a non-hyperaccumulator Solanum melogena Australian ecotype was not significantly different to the China ecotype. In particular, Cd concentration in leaves and shoots of S. nigrum collected from Australia were 166.0 and 146.3 mg kg(-1) respectively when 20 mg kg(-1) Cd spiked, and were not significantly different to the ecotype imported from China which had 109.8 and 85.3 mg kg(-1) respectively, in the stems and leaves. In contrast, the tolerance of the eggplant to Cd was significantly less than the two S. nigrum ecotypes. Although some morphological properties of S. nigrum collected from Australia were different from that of the plants collected from China, Cd hyperaccumulator characteristics of two ecotypes were similar. The results suggested that the tolerance and uptake of Cd may be a constitutive trait of this species.
authors.affiliation: Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, PR China. shuhewei@yahoo.com.cn
authors.forename: Shuhe
authors.initials: S
authors.lastname: Wei
authors.forename: Gary
authors.initials: G
authors.lastname: Clark
authors.forename: Augustine Ignatius
authors.initials: AI
authors.lastname: Doronila
authors.forename: Jian
authors.initials: J
authors.lastname: Jin
authors.forename: Alison Carol
authors.initials: AC
authors.lastname: Monsant
mesh_terms: D001673:Biodegradation, Environmental; D018533:Biomass; D002104:Cadmium / Q000378:metabolism* / Q000494:pharmacology; D055598:Chemical Phenomena; D002681:China; D060146:Ecotype; D018515:Plant Leaves / Q000033:anatomy & histology / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D018517:Plant Roots / Q000033:anatomy & histology / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D018520:Plant Shoots / Q000033:anatomy & histology / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D018547:Plant Stems / Q000033:anatomy & histology / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000378:metabolism; D032323:Solanum melongena / Q000378:metabolism*; D032324:Solanum nigrum / Q000033:anatomy & histology / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*; D013045:Species Specificity; D014739:Victoria
chemical_list: D012987:Soil; D012989:Soil Pollutants; D002104:Cadmium