Abstract
Aluminium in acid soils is highly toxic to plants and expresses negative impact on environment and agricultural production. Understanding its distribution and transport from environment to plant cells especially root cell walls is significant in reducing its phytotoxicity. In the present study, two varieties of wheats (Triticum aestivum L.) ES8 and ET8 with different Al tolerance were examined using fourier transform infrared spectroscopy (FTIR). The spectra results showed that the negative charged functional groups polysaccharide and carboxyl were observed at the wheat roots outer cellular layers. These charged functional groups provided binding sites for free Al3+ ions from the environment. And the supply of negative charges by these groups is probably one of the important reasons of high Al accumulation at plant root cell walls.
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