油松种源差异性及其响应干旱胁迫的代谢物组学研究展望

Variations among provenances of Pinus Tabuliformis and its metabological outlook in correspondence to drought resistance mechanism

油松(Pinus tabuliformis)作为我国特有树种,是我国北方地区重要的水土保持和防风固沙树种.油松分布地区降水量少,土壤干旱贫瘠,水分是影响油松生长的主要生态因子.本文首先总结了油松不同气候生态型种源在形态、生理、抗性等方面的差异性研究现状,探讨了代谢物组学在植物抗逆性研究的成功应用,分析并提出了利用代谢物组学研究油松响应干旱胁迫的代谢调控机理及其种源差异性的研究思路.开展此类研究不仅有助于进一步揭示林木的抗旱机制,而且能够为种源选择和现有林改造提供科学指导.

As an indigenous conifer in China, Pinus tabuliformis is one of the most important afforestation tree species in Northern China with its irreplaceable economic and environmental protection advantages. Due to the low precipitation in its distribution area, water is often the crucial factors for the tree growth. The article reviewed the current studies of the variations in morphology, physiology, phenology, resistance and growth among provenances. Moreover, the possibility and prospect of using metabolomics to further explore their drought resistance mecha- nisms are also discussed. These studies will not only contribute to a better view of the drought - relief process of trees, but also provide valuable suggestions for provenance selection and improvement of the current forest stands.