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Fig. 5 | BMC Plant Biology

Fig. 5

From: The aluminum distribution and translocation in two citrus species differing in aluminum tolerance

Fig. 5

The FTIR spectra of the lateral root CW in the region of 4000–500 cm− 1 A, 1800–800 cm− 1 B, digital subtraction spectra C and the OPLS-DA of relative absorbance D of two citrus species. Seedlings of C. sinensis and C. grandis were treated with nutrient solution (Control, pH 4.3) or supplemented by 1.0 mM Al3+ (1.0 mM Al toxicity, pH 4.3). The lateral root CW samples were extracted for FTIR spectra analysis. The digital spectra represent Control CW minus Al toxic-CW. The values represent mean ± SE (N = 5)

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