Regulation of Free Amino Acid in Cotton at the Seedling Stage by Aphis gossypii Feeding |
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| Authors: | Ma Yan Zhang Shuai Luo Junyu Zhu Xiangzhen Gao Xueke Cui Jinjie |
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| Institution: | Institute of Cotton Research of Chinese Academy of Agricultural Sciences/State Key Laboratory of Cotton Biology, Anyang, Henan 455000, China |
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| Abstract: | Objective] Free amino acids are important nitrogen nutrients, and their changes reflect the interaction between insects and host plants. The purpose of this experiment was to study the effect of aphid feeding on the free amino acid content of host cotton in seedling stage. Method] The seedling cotton infected by aphid with different damage grades was selected from the field and analyzed the content of free amino acid in euphylla, cotyledon, hypocotyl and root. Result] The content of free amino acids in cotton tissues increased after feeding by Aphis gossypii, and the content of free amino acids in cotyledon, hypocotyl and root is more than 2 times of the level 0. The content of non-essential amino acids increased more significantly than that of essential amino acids. The changes of single free amino acid content in different tissues were not completely consistent, and the Asn and Glu increased significantly in all tissues. Conclusion] The feeding behavior of cotton aphid affects the nutritional level of cotton tissue and the content of free amino acid increased significantly. |
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| Keywords: | Aphis gossypii free amino acid content feeding activities cotton tissues |
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