Broadley Martin R, Willey Neil J, Wilkins Janine C, Baker Alan J M, Mead Andrew, White Philip J
Horticulture Research International, Wellesbourne, Warwick CV35 9EF, UK.
University of the West of England, Frenchay, Bristol BS16 1QY, UK.
New Phytol. 2001 Oct;152(1):9-27. doi: 10.1046/j.0028-646x.2001.00238.x.
• The influence of phylogeny on shoot heavy metal content in plants was investigated and the hypothesis tested that traits impacting on the accumulation of cadmium, chromium, copper, nickel, lead and zinc in plant shoots are associated. • Data suitable for comparative analyses were generated from a literature survey, using a residual maximum likelihood (REML) procedure. Both pair-wise regressions and principal components analyses (PCA) were performed on independent contrasts of shoot metal content. • Significant variation in shoot metal content occurred at the classification level of order and above, suggesting an ancient evolution of traits. Traits impacting on the accumulation of metals in plant shoots were associated. • This information can be used to improve predictions of soil-to-plant metal transfer, to formulate hypotheses on the origins of metal-accumulating phenotypes and to inform the exploitation of plant genetic resources for nutritional improvement and phytoremediation.
• 研究了系统发育对植物地上部重金属含量的影响，并对影响植物地上部镉、铬、铜、镍、铅和锌积累的性状相关这一假设进行了检验。
• 通过文献调查，采用残差最大似然法（REML）生成了适合比较分析的数据。对地上部金属含量的独立对比进行了成对回归和主成分分析（PCA）。
• 地上部金属含量在目及以上分类水平存在显著差异，表明性状具有古老的进化过程。影响植物地上部金属积累的性状是相关的。
• 这些信息可用于改进土壤到植物金属转移的预测，形成关于金属积累表型起源的假设，并为利用植物遗传资源进行营养改善和植物修复提供信息。
