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Plant grafting relieves asymmetry of jasmonic acid response induced by wounding between scion and rootstock in tomato hypocotyl

文献类型： 外文期刊

作者： Wang, Jiaqi 1 ; Li, Dongliang 3 ; Chen, Ni 2 ; Chen, Jingjing 3 ; Mu, Changjun 6 ; Yin, Kuide 1 ; He, Yuke 5 ; Liu, Heng 1 ;

作者机构： 1.Hei Longjiang Bayi Agr Univ, Plant & Microbe Interact Lab, Daqing, Heilongjiang, Peoples R China

2.Shaoxing Univ, Coll Life Sci, Shaoxing, Zhejiang, Peoples R China

3.Chinese Acad Trop Agr Sci, Minist Agr, South Subtrop Crop Res Inst, Zhanjiang, Guangdong, Peoples R China

4.Chinese Acad Trop Agr Sci, Inst South Subtrop Crop Res Inst, Natl Field Genebank Trop Fruit, Zhanjiang, Peoples R China

5.Chinese Acad Sci, Shanghai Inst Plant Physiol & Ecol, Natl Key Lab Plant Mol Genet, Shanghai, Peoples R China

6.Lanzhou Univ, Sch Life Sci, Minist Educ, Key Lab Cell Act & Stress Adaptat, Lanzhou, Peoples R China

期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）

ISSN： 1932-6203

年卷期： 2020 年 15 卷 11 期

页码：

收录情况： SCI

摘要： Plant grafting is a sequential wound healing process. However, whether wounding induces a different jasmonic acid (JA) response within half a day (12 h) after grafting or non-grafting remains unclear. Using the tomato hypocotyl grafting method, we show that grafting alleviates the asymmetrical accumulation of JA and jasmonic acid isoleucine conjugate (JA-Ile) in scion and rootstock caused by wounding, and from 2 h after tomato micrografting, grafting obviously restored the level of JA-Ile in the scion and rootstock. Meanwhile, five JA-related genes, SlLOX11, SlAOS, SlCOI1, SlLAPA and SlJA2L, are detected and show significant changes in transcriptional expression patterns within 12 h of grafting, from asymmetrical to symmetrical, when the expression of 30 JA- and defense-related genes were analyzed. The results indicated that grafting alleviates the asymmetrical JA and defense response between scion and rootstock of the tomato hypocotyl within 12 h as induced by wounding. Moreover, we demonstrate that in the very early hours after grafting, JA-related genes may be involved in a molecular mechanism that changes asymmetrical expression as induced by wounding between scion and rootstock, thereby promoting wound healing and grafting success.

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