Lu Xiaohong, Liu Wenqian, Wang Tao, Zhang Jiali, Li Xiaojun, Zhang Wenna
Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China.
Front Plant Sci. 2020 May 5;11:460. doi: 10.3389/fpls.2020.00460. eCollection 2020.
Grafting is widely used in fruit, vegetable, and flower propagation to improve biotic and abiotic stress resistance, yield, and quality. At present, the systemic changes caused by grafting, as well as the mechanisms and effects of long-distance signal transport between rootstock and scion have mainly been investigated in model plants ( and ). However, these aspects of grafting vary when different plant materials are grafted, so the study of model plants provides only a theoretical basis and reference for the related research of grafted vegetables. The dearth of knowledge about the transport of signaling molecules in grafted vegetables is inconsistent with the rapid development of large-scale vegetable production, highlighting the need to study the mechanisms regulating the rootstock-scion interaction and long-distance transport. The rapid development of molecular biotechnology and "omics" approaches will allow researchers to unravel the physiological and molecular mechanisms involved in the rootstock-scion interaction in vegetables. We summarize recent progress in the study of the physiological aspects (e.g., hormones and nutrients) of the response in grafted vegetables and focus in particular on long-distance molecular signaling (e.g., RNA and proteins). This review provides a theoretical basis for studies of the rootstock-scion interaction in grafted vegetables, as well as provide guidance for rootstock breeding and selection to meet specific demands for efficient vegetable production.
嫁接在水果、蔬菜和花卉繁殖中被广泛应用，以提高生物和非生物胁迫抗性、产量及品质。目前，嫁接引起的系统变化以及砧木和接穗之间长距离信号运输的机制和效应主要在模式植物中进行了研究（以及）。然而，当嫁接不同植物材料时，嫁接的这些方面会有所不同，因此模式植物的研究仅为嫁接蔬菜的相关研究提供了理论基础和参考。关于嫁接蔬菜中信号分子运输的知识匮乏与大规模蔬菜生产的快速发展不相适应，这凸显了研究调节砧木 - 接穗相互作用和长距离运输机制的必要性。分子生物技术和“组学”方法的快速发展将使研究人员能够揭示蔬菜中砧木 - 接穗相互作用所涉及的生理和分子机制。我们总结了嫁接蔬菜响应生理方面（如激素和营养物质）研究的最新进展，并特别关注长距离分子信号（如RNA和蛋白质）。本综述为嫁接蔬菜中砧木 - 接穗相互作用的研究提供了理论基础，也为满足高效蔬菜生产的特定需求进行砧木育种和选择提供了指导。
