Artificial Light for Improving Tomato Recovery Following Grafting: Transcriptome and Physiological Analyses
文献类型： 外文期刊
作者： Ding, Xiaotao 1 ; Miao, Chen 1 ; Li, Rongguang 2 ; He, Lizhong 1 ; Zhang, Hongmei 1 ; Jin, Haijun 1 ; Cui, Jiawei 1 ; Wang, Hong 1 ; Zhang, Yongxue 1 ; Lu, Panling 1 ; Zou, Jun 3 ; Yu, Jizhu 1 ; Jiang, Yuping 2 ; Zhou, Qiang 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Hort Res Inst, Shanghai Key Lab Protected Hort Technol, Shanghai 201403, Peoples R China
2.Shanghai Inst Technol, Coll Ecol Technol & Engn, Shanghai 201418, Peoples R China
3.Shanghai Inst Technol, Coll Sci, Shanghai 201418, Peoples R China
关键词： healthy index; graft; plant hormones; plant morphogenesis; gene expression; light
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）
ISSN： 1661-6596
年卷期： 2023 年 24 卷 21 期
页码：
收录情况： SCI
摘要： Grafting is widely used to enhance the phenotypic traits of tomatoes, alleviate biotic and abiotic stresses, and control soil-borne diseases of the scion in greenhouse production. There are many factors that affect the healing and acclimatization stages of seedlings after grafting. However, the role of light has rarely been studied. In this study, we compared the effects of artificial light and traditional shading (under shaded plastic-covered tunnels) on the recovery of grafted tomato seedlings. The results show that the grafted tomato seedlings recovered using artificial light had a higher healthy index, leaf chlorophyll content, shoot dry weight, and net photosynthetic rate (Pn) and water use efficiency (WUE) compared with grafted seedling recovered using the traditional shading method. Transcriptome analysis showed that the differentially expressed genes (DEGs) of grafted seedlings restored using artificial light were mainly enriched in the pathways corresponding to plant hormone signal transduction. In addition, we measured the endogenous hormone content of grafted tomato seedlings. The results show that the contents of salicylic acid (SA) and kinetin (Kin) were significantly increased, and the contents of indoleacetic acid (IAA) and jasmonic acid (JA) were decreased in artificial-light-restored grafted tomato seedlings compared with those under shading treatments. Therefore, we suggest that artificial light affects the morphogenesis and photosynthetic efficiency of grafted tomato seedlings, and it can improve the performance of tomato seedlings during grafting recovery by regulating endogenous hormone levels.
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