Physiological and Transcriptomic Response of Grey Poplar (Populus ×canescens Aiton Sm.) to Cadmium Stress

Plants

Martina Komárková¹  Eva Pokorná¹  Jakub Chromý¹  Pavlína Máchová¹  Petr Soudek² 

[1] Forestry and Game Management Research Institute, Strnady, 25202 Jiloviste, Czech Republic;The Czech Academy of Sciences, Institute of Experimental Botany, 16502 Prague, Czech Republic;

关键词: cadmium;    gene expression;    grey poplar;    microsatellite analysis;    mineral uptake;    translocation factor;   

DOI  :  10.3390/plants9111485

来源: DOAJ

【 摘 要 】

(1) Background: Populus ×canescens (Aiton) Sm. is a fast-growing woody plant belonging to the family Salicaceae. Two poplar genotypes characterized by unique phenotypic traits (TP11 and TP20) were chosen to be characterized and tested for a physiological and transcriptomic response to Cd stress. (2) Methods: A comparative analysis of the effects of exposure to high cadmium (Cd) concentrations (10 µM and 100 µM) of TP11 and TP20 was performed. (3) Results: Neither of the tested Cd concentration negatively affected plant growth; however, the chlorophyll content significantly decreased. The potassium (K) content was higher in the shoots than in the roots. The magnesium concentrations were only slightly affected by Cd treatment. The zinc content in the shoots of TP20 was lower than that in the shoots of TP11. Cd accumulation was higher in the roots than in the shoots. After 10 days of exposure, 10 µM Cd resulted in comparable amounts of Cd in the roots and shoots of TP20. The most significant change in transcript amount was observed in endochitinase 2, 12-oxophytodienoate reductase 1 and phi classglutathione S-transferase. (4) Conclusions: Our study provided new insights for effective assessing the ability of different poplar genotypes to tolerate Cd stress and underlying Cd tolerance.

【 授权许可】

Unknown