Thlaspi caerulescens (Brassicaceae) population genetics in western Switzerland: is the genetic structure affected by natural variation of soil heavy metal concentrations?

被引:24
作者
Besnard, Guillaume [1 ]
Basic, Nevena [1 ]
Christin, Pascal-Antoine [1 ]
Savova-Bianchi, Dessislava [1 ]
Galland, Nicole [1 ]
机构
[1] Univ Lausanne, Dept Ecol & Evolut, CH-1015 Lausanne, Switzerland
关键词
cadmium (Cd); genetic markers; heavy metal; plastid DNA; post-glacial colonization; zinc (Zn); CADMIUM HYPERACCUMULATION; POSTGLACIAL RECOLONIZATION; ZINC; PLANTS; TOLERANCE; HISTORY; SITES; ALPS; POLYMORPHISMS; ACCUMULATION;
D O I
10.1111/j.1469-8137.2008.02706.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Thlaspi caerulescens (Brassicaceae) is a promising plant model with which to study heavy metal hyperaccumulation. Population genetics studies are necessary for a better understanding of its history, which will be useful for further genomic studies on the evolution of heavy metal hyperaccumulation. The genetic structure of 24 natural Swiss locations was investigated using nuclear and plastid loci. Population genetics parameters were estimated and genetic pools were identified using Bayesian inference on eight putatively neutral nuclear loci. Finally, the effect of cadmium (Cd) and zinc (Zn) soil concentrations on genetic differentiation at loci located in genes putatively involved in heavy metal responses was examined using partial Mantel tests in Jura, western Switzerland. Four main genetic clusters were recognized based on nuclear and plastid loci, which gave mostly congruent signals. In Jura, genetic differentiation linked to heavy metal concentrations in soil was shown at some candidate loci, particularly for genes encoding metal transporters. This suggests that natural selection limits gene flow between metalliferous and nonmetalliferous locations at such loci. Strong historical factors explain the present genetic structure of Swiss T. caerulescens populations, which has to be considered in studies testing for relationships between environmental and genetic variations. Linking of genetic differentiation at candidate genes with soil characteristics offers new perspectives in the study of heavy metal hyperaccumulation. New Phytologist (2009) 181: 974-984doi: 10.1111/j.1469-8137.2008.02706.x.
引用
收藏
页码:974 / 984
页数:11
相关论文
共 50 条
[1]  
[Anonymous], 1987, Science, Philosophy, and Human Behavior in the Soviet Union
[2]  
Antonovics J., 1971, Advances in Ecological Research, V7, P1, DOI 10.1016/S0065-2504(08)60202-0
[3]   Thlaspi caerulescens, an attractive model species to study heavy metal hyperaccumulation in plants [J].
Assunçao, AGL ;
Schat, H ;
Aarts, MGM .
NEW PHYTOLOGIST, 2003, 159 (02) :351-360
[4]   Construction of a genetic linkage map of Thlaspi caerulescens and quantitative trait loci analysis of zinc accumulation [J].
Assunçao, AGL ;
Pieper, B ;
Vromans, J ;
Lindhout, P ;
Aarts, MGM ;
Schat, H .
NEW PHYTOLOGIST, 2006, 170 (01) :21-32
[5]  
Baker AJM, 2000, PHYTOREMEDIATION OF CONTAMINATED SOIL AND WATER, P85
[6]   Median-joining networks for inferring intraspecific phylogenies [J].
Bandelt, HJ ;
Forster, P ;
Röhl, A .
MOLECULAR BIOLOGY AND EVOLUTION, 1999, 16 (01) :37-48
[7]   Gene polymorphisms for elucidating the genetic structure of the heavy-metal hyperaccumulating trait in Thlaspi caerulescens and their cross-genera amplification in Brassicaceae [J].
Basic, N. ;
Besnard, G. .
JOURNAL OF PLANT RESEARCH, 2006, 119 (05) :479-487
[8]   Cadmium hyperaccumulation and reproductive traits in natural Thlaspi caerulescens populations [J].
Basic, N ;
Keller, C ;
Fontanillas, P ;
Vittoz, P ;
Besnard, G ;
Galland, N .
PLANT BIOLOGY, 2006, 8 (01) :64-72
[9]  
BASIC N, 2006, THESIS U LAUSANNE LA
[10]   Cadmium hyperaccumulation and genetic differentiation of Thlaspi caerulescens populations [J].
Basic, Nevena ;
Salamin, Nicolas ;
Keller, Catherine ;
Galland, Nicole ;
Besnard, Guillaume .
BIOCHEMICAL SYSTEMATICS AND ECOLOGY, 2006, 34 (09) :667-677