eCite Digital Repository

Ca2+ and CaM are involved in Al3+ pretreatment-promoted fluoride accumulation in tea plants (Camellia sinesis L.)

Citation

Zhang, X-C and Gao, H-J and Wu, H-H and Yang, T-Y and Zhang, Z-Z and Mao, J-D and Wan, X-C, Ca2+ and CaM are involved in Al3+ pretreatment-promoted fluoride accumulation in tea plants (Camellia sinesis L.), Plant Physiology and Biochemistry, 96 pp. 288-295. ISSN 0981-9428 (2015) [Refereed Article]

Copyright Statement

Copyright 2015 Elsevier Masson SAS

DOI: doi:10.1016/j.plaphy.2015.08.007

Abstract

Tea plant (Camellia sinensis (L.) O. kuntze) is known to be a fluoride (F) and aluminum (Al3+) hyper-accumulator. Previous study showed that pre-treatment of Al3+ caused a significant increase of F accumulation in tea plants. However, less is known about the intricate network of Al3+ promoted F accumulation in tea plants. In this study, the involvement of endogenous Ca2+ and CaM in Al3+ pretreatment-promoted F accumulation in tea plants was investigated. Our results showed that Al3+ induced the inverse change of intracellular Ca2+ fluorescence intensity and stimulated Ca2+ trans-membrane transport in the mature zone of tea root. Also, a link between internal Ca2+ and CaM was found in tea roots under the presence of Al3+. In order to investigate whether Ca2+ and CaM were related to F accumulation promoted by Al3+ pretreatment, Ca2+ chelator EGTA and CaM antagonists CPZ and TFP were used. EGTA, CPZ, and TFP pretreatment inhibited Al3+-induced increase of Ca2+ fluorescence intensity and CaM content in tea roots, and also significantly reduced Al3+-promoted F accumulation in tea plants. Taken together, our results suggested that the endogenous Ca2+ and CaM are involved in Al3+ pretreatment-promoted F accumulation in tea roots.

Item Details

Item Type:Refereed Article
Keywords:Al3+, calcium, calmodulin, fluoride, tea plant
Research Division:Biological Sciences
Research Group:Plant Biology
Research Field:Plant Physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Industrial Crops
Objective Field:Industrial Crops not elsewhere classified
Author:Wu, H-H (Mr Honghong Wu)
ID Code:105559
Year Published:2015
Web of Science® Times Cited:6
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2016-01-07
Last Modified:2016-08-11
Downloads:0

Repository Staff Only: item control page