Influence of Aluminum on Absorption and Distribution of Fluoride in Tea Plants (Camellia sinesis L.)

doi:10.7506/spkx1002-6630-201305031

Abstract

Abstract:

The effects of different Al3+ concentrations and different c(Al3+):c(F－) concentration ratios on accumulation
characteristics of fluoride in tea plants (Camellia sinesis L.) under liquid culture conditions were examined. Low Al3+
concentrations (1.05－5.26 mmol/L; c(Al3+):c(F－) = 1:10－1:2) could promote fluoride accumulation in tea plant roots and
fluoride was absorbed primarily in an ionic form. On the contrary, fluoride accumulation in tea plant roots was inhibited under
high Al3+ concentrations (10.52－31.57 mmol/L; c(Al3+):c(F－) = 1:1－3:1) and fluoride was absorbed primarily in the form of
c(Al3+):c(F－)complex. Different Al3+ concentrations had a promoting effect on fluoride accumulation in tea leaves. Fluoride
accumulation in tea plant roots was inhibited at c(Al3+):c(F－) ratios equal to or greater than 1 and Al3+ concentrations equal to or
greater than 10.52 mmol/L, but promoted at c(Al3+):c(F－) ratios smaller than 1 and Al3+ concentrations equal to or smaller than
5.26 mmol/L. Al3+ could promote fluoride translocation from roots to leaves in tea plants and the maximum translocation factor
was observed at c(Al3+):c(F－) ratios of 1:1, 1:3 and 1:5.

Key words: Al3+ concentration, fluoride forms, tea plant, absorption, distribution

CLC Number:

S571.1

ZHANG Xian-chen1，GAO Hong-jian2，ZHANG Zheng-zhu1,*，WAN Xiao-chun1. Influence of Aluminum on Absorption and Distribution of Fluoride in Tea Plants (Camellia sinesis L.)[J]. FOOD SCIENCE, 2013, 34(5): 147-150.

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