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Frontiers of Agriculture in China

ISSN 1673-7334

ISSN 1673-744X(Online)

CN 11-5729/S

Front. Agric. China    2008, Vol. 2 Issue (1) : 50-54     DOI: 10.1007/s11703-008-0011-9
Dynamic change of organic acids secreted from wheat roots in Mn deficiency
FANG Zheng, AN Zhenfeng, LI Yingli
Key Laboratory of Bioinorganic Chemistry of Hebei Province, Agricultural University of Hebei;
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Abstract Through solution culture experiment and liquid chromatogram technique, two wheat (Triticum aestivum L.) genotypes with different tolerances to Mn deficiency were used to study the dynamic change of organic acids secreted from wheat root in the conditions of no Mn, low Mn and normal Mn supply. Nine kinds of organic acids were measured in wheat root exudate. The results showed that there were significant differences of organic acids in root exudate between tolerant genotype and susceptible genotype under Mn-stressed conditions. Tolerant genotype 9023 secreted more organic acids from the plant roots than susceptible genotype CM28. The main organic acid exudate included tartaric acid, malic acid, acetic acid, maleic acid and fumaric acid. Of all these acids, the amounts of tartaric acid and malic acid in root exudate showed significant differences between the tolerant genotype and susceptible genotype under Mn-stressed conditions. The results also indicated that secreting organic acids into root rhizosphere was an active response to Mn deficiency for the tolerant genotype of wheat.
Issue Date: 05 March 2008
 Cite this article:   
AN Zhenfeng,FANG Zheng,LI Yingli. Dynamic change of organic acids secreted from wheat roots in Mn deficiency[J]. Front. Agric. China, 2008, 2(1): 50-54.
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