期刊
PLANT PHYSIOLOGY AND BIOCHEMISTRY
卷 97, 期 -, 页码 412-419出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.plaphy.2015.10.033
关键词
Root border cells (RBCs); Copper (Cu); Programmed cell death (PCD); Cucumber (Cucumber sativus L.)
资金
- National Natural Science Foundation of China [41422107, 21177109]
- Zhejiang Provincial Natural Science Foundation of China [R5110031]
- Fundamental Research Funds for the Central Universities [2015XZZX004-15]
Programmed cell death (PCD) in root border cells (RBCs) induced by Copper (Cu) has been little studied. This study explored whether Cu induced PCD in RBCs of cucumber or not and investigated the possible mechanisms. The results showed that the percentage of apoptotic and necrotic RBCs increased with increasing concentration of Cu treatment. A quick burst of ROS in RBCs was detected, while mitochondrial membrane potential (Delta Psi(m)) decreased sharply with Cu treatment. Caspase-3 like protease activity showed a tendency of increase with Cu treatment. The potential of Cu to induce PCD in RBCs of cucumber was first proved. Our results showed that ROS generation and mitochondrial membrane potential loss played important roles in Cu-induced caspase-3-like activation and PCD in RBCs of cucumber, which provided new insight into the signaling cascades that modulate Cu phytotoxicity mechanism. (C) 2015 Elsevier Masson SAS. All rights reserved.
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