Bona Elisa, Marsano Francesco, Cavaletto Maria, Berta Graziella
Department of Environmental and Life Sciences, University of Piemonte Orientale A. Avogadro, Alessandria, Italy.
Proteomics. 2007 Apr;7(7):1121-30. doi: 10.1002/pmic.200600712.
Cannabis sativa is an annual herb with very high biomass and capability to absorb and accumulate heavy metals in roots and shoots; it is therefore a good candidate for phytoremediation of soils contaminated with metals. Copper is an essential micronutrient for all living organisms, it participates as an important redox component in cellular electron transport chains; but is extremely toxic to plants at high concentrations. The aim of this work was to investigate copper effects on the root proteome of C. sativa, whose genome is still unsequenced. Copper stress induced the suppression of two proteins, the down-regulation of seven proteins, while five proteins were up-regulated. The resulting differences in protein expression pattern were indicative of a plant adaptation to chronic stress and were directed to the reestablishment of the cellular and redox homeostasis.
大麻是一种一年生草本植物，生物量极高，具有在根和地上部分吸收和积累重金属的能力；因此，它是用于对受金属污染土壤进行植物修复的良好候选植物。铜是所有生物必需的微量营养素，它作为重要的氧化还原成分参与细胞电子传递链；但在高浓度时对植物具有极高毒性。这项工作的目的是研究铜对基因组仍未测序的大麻根系蛋白质组的影响。铜胁迫导致两种蛋白质受到抑制，七种蛋白质表达下调，同时有五种蛋白质表达上调。蛋白质表达模式的这些差异表明植物对慢性胁迫的适应，并旨在重建细胞和氧化还原稳态。
