Han Ruiduo, Lin Rui, Zhou Yanhong, Thomas Hannah Rae
Department of Horticulture, Zhejiang University, Hangzhou, 310058, China.
Yazhou Bay Science and Technology City, Hainan Institute, Zhejiang University, Sanya, 572025, China.
Planta. 2025 May 2;261(6):124. doi: 10.1007/s00425-025-04694-1.
Light and temperature can regulate auxin production which has been recently shown to be key during graft healing, suggesting that abiotic factors may be vital variables for future graft studies. Grafting is an important horticultural tool used to combine advantageous plant traits. Despite its broad usage, the mechanisms that underlie graft healing remain poorly understood. Recent work has highlighted the influence of high temperature-mediated auxin flow on graft success. Light and temperature sensing utilize partially overlapping mechanisms to regulate auxin biosynthesis, signaling, and transport. In this review, we explore the sensors and transcriptional regulators that modulate auxin response, specifically emphasizing how these components regulate graft success and vascular reconnection. We also discuss areas of graft biology regulated by auxin and underexplored areas of photobiology that may be key to a better understanding of graft mechanisms. This review underscores the importance of translating genetic findings from model systems into horticultural crops to expand our knowledge of economically valuable techniques like grafting.
光和温度可以调节生长素的产生，最近的研究表明，生长素在嫁接愈合过程中起着关键作用，这表明非生物因素可能是未来嫁接研究的重要变量。嫁接是一种重要的园艺工具，用于组合植物的优良性状。尽管其应用广泛，但嫁接愈合的潜在机制仍知之甚少。最近的研究强调了高温介导的生长素流动对嫁接成功的影响。光和温度感知利用部分重叠的机制来调节生长素的生物合成、信号传导和运输。在这篇综述中，我们探讨了调节生长素反应的传感器和转录调节因子，特别强调了这些成分如何调节嫁接成功和维管束重新连接。我们还讨论了受生长素调节的嫁接生物学领域以及光生物学中尚未充分探索的领域，这些领域可能是更好地理解嫁接机制的关键。这篇综述强调了将模式系统中的遗传研究结果转化为园艺作物的重要性，以扩展我们对嫁接等具有经济价值技术的认识。
