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Phenylalanine ammonia-lyase2.1 contributes to the soybean response towards Phytophthora sojae infection

文献类型： 外文期刊

作者： Zhang, Chuanzhong 1 ; Wang, Xin 1 ; Zhang, Feng 1 ; Dong, Lidong 1 ; Wu, Junjiang 4 ; Cheng, Qun 1 ; Qi, Dongyue 1 ; Yan, 1 ;

作者机构： 1.Northeast Agr Univ, Soybean Res Inst, Key Lab Soybean Biol, Chinese Educ Minist, Harbin, Heilongjiang, Peoples R China

2.Heilongjiang Acad Land Reclamat Sci, Harbin, Heilongjiang, Peoples R China

3.Harbin Med Univ, Affiliated Hosp 1, Harbin, Heilongjiang, Peoples R China

4.Heilongjiang Acad Agr Sci, Key Lab Soybean Cultivat, Soybean Res Inst, Minist Agr PR China, Harbin, Heilongjiang, Peoples R China

5.Heilongjiang Acad Agr Sci, Jiamusi Branch Acad, Jiamusi, Heilongjiang, Peoples R China

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2017 年 7 卷

页码：

收录情况： SCI

摘要： Phytophthora root and stem rot of soybean [Glycine max (L.) Merr.] caused by Phytophthora sojae is a destructive disease worldwide. Phenylalanine ammonia-lyase (PAL) is one of the most extensively studied enzymes related to plant responses to biotic and abiotic stresses. However, the molecular mechanism of PAL in soybean in response to P.sojae is largely unclear. Here, we characterize a novel member of the soybean PAL gene family, GmPAL2.1, which is significantly induced by P.sojae. Overexpression and RNA interference analysis demonstrates that GmPAL2.1 enhances resistance to P. sojae in transgenic soybean plants. In addition, the PAL activity in GmPAL2.1-OX transgenic soybean is significantly higher than that of non-transgenic plants after infection with P. sojae, while that in GmPAL2.1-RNAi soybean plants is lower. Further analyses show that the daidzein, genistein and salicylic acid (SA) levels and the relative content of glyceollins are markedly increased in GmPAL2.1-OX transgenic soybean. Taken together, these results suggest the important role of GmPAL2.1 functioning as a positive regulator in the soybean response to P. sojae infection, possibly by enhancing the content of glyceollins, daidzein, genistein and SA.

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