Zhang, X-C and Gao, H-J and Yang, T-Y and Wu, H-H and Wang, Y-M and Wan, X-C, Al3+-promoted fluoride accumulation in tea plants (Camellia sinensis) was inhibited by an anion channel inhibitor DIDS, Journal of The Science of Food and Agriculture, 96, (12) pp. 4224-4230. ISSN 0022-5142 (2016) [Refereed Article]
Copyright 2016 Society of Chemical Industry
Background: Generally, tea plants are grown in acid soil which is rich in aluminum (Al) and fluoride (F). A recent publication showed that pretreatment with Al3+ promoted F accumulation in tea plants by increasing endogenous Ca2+ and calmodulin (CaM). A high level of F in tea leaves not only impairs tea quality but also might pose a health risk for people drinking tea regularly. Therefore it is important to try to find some clues which might be beneficial in controlling F accumulation in tea plants grown in acid soil (Al3+).
Results: It was found that diisothiocyanostilbene-2,2-disulfonic acid (DIDS) significantly reduced Al3+-promoted F accumulation in tea plants. Additionally, Al3+ plus DIDS treatment stimulated significantly higher Ca2+ efflux and decreased the CaM level in tea roots compared with Al3+ treatment. Besides, significantly higher depolarization of membrane potential was shown in tea roots treated with Al3+ plus DIDS than in those treated with Al3+, as well as higher net total H+ efflux and plasma membrane H+-ATPase activity.
Conclusion: Al3+-promoted F accumulation in tea plants was inhibited by an anion channel inhibitor DIDS. Ca2+/CaM and membrane potential depolarization may be the components involved in this process.
|Item Type:||Refereed Article|
|Keywords:||Ca2+ flux, CaM, DIDS, fluoride, membrane potential, 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)|
|Deposited By:||Office of the Tasmanian Institute of Agriculture|
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