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Species- and organ-specific contribution of peroxisomal cinnamate:CoA ligases to benzoic and salicylic acid biosynthesis

文献类型： 外文期刊

作者： Wang, Yukang 1 ; Miao, Huiying 1 ; Qiu, Jiehua 3 ; Liu, Menghui 1 ; Jin, Gaochen 1 ; Zhang, Wenxuan 1 ; Song, Shuyan 1 ; Fan, Pengxiang 1 ; Xin, Xiufang 4 ; Hu, Jianping 5 ; Li, Ran 1 ; Pan, Ronghui 1 ;

作者机构： 1.Zhejiang Univ, Coll Agr & Biotechnol, State Key Lab Rice Biol & Breeding, Hangzhou 310058, Zhejiang, Peoples R China

2.Zhejiang Univ, ZJU Hangzhou Global Sci & Technol Innovat Ctr, Hangzhou 311215, Zhejiang, Peoples R China

3.China Natl Rice Res Inst, State Key Lab Rice Biol & Breeding, Hangzhou 311400, Zhejiang, Peoples R China

4.Chinese Acad Sci, CAS Ctr Excellence Mol Plant Sci, Inst Plant Physiol & Ecol, Natl Key Lab Plant Mol Genet, Shanghai 200032, Peoples R China

5.Michigan State Univ, Dept Energy Plant Res Lab, E Lansing, MI 48824 USA

6.Michigan State Univ, Plant Biol Dept, E Lansing, MI 48824 USA

期刊名称：PLANT CELL （ 影响因子：11.6； 五年影响因子：12.1 ）

ISSN： 1040-4651

年卷期： 2025 年 37 卷 1 期

页码：

收录情况： SCI

摘要： Salicylic acid (SA) is a prominent defense hormone whose basal level, organ-specific accumulation, and physiological role vary widely among plant species. Of the 2 known pathways of plant SA biosynthesis, the phenylalanine ammonia lyase (PAL) pathway is more ancient and universal but its biosynthetic and physiological roles in diverse plant species remain unclear. Studies in which the PAL pathway is specifically or completely inhibited, as well as a direct comparison of diverse species and different organs within the same species, are needed. To this end, we analyzed the PAL pathway in rice (Oryza sativa) and Arabidopsis (Arabidopsis thaliana), 2 distantly related model plants whose basal SA levels and distributions differ tremendously at the organism and tissue levels. Based on our recent identification of the rice peroxisomal cinnamate:CoA ligases (CNLs), we identified 2 peroxisomal CNLs from Arabidopsis and showed CNL as the most functionally specific enzyme among the known enzymes of the PAL pathway. We then revealed the species- and organ-specific contribution of the PAL pathway to benzoic and salicylic acid biosynthesis and clarified its physiological importance in rice and Arabidopsis. Our findings highlight the necessity to consider species and organ types in future SA-related studies and may help to breed new disease-resistant crops. Peroxisomal cinnamate:CoA ligases contribute to benzoic and salicylic acid biosynthesis via the phenylalanine ammonia lyase pathway in a species- and organ-specific manner in Arabidopsis and rice.

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