Lignin enhances the mechanical strength of plants and enables their intrinsic water transport. Dendrochronological, wood anatomical, and plant physiological evidence now suggests that the degree of lignin deposition is constrained by low temperature. Placing these findings in an ecological context implies rethinking of the global treeline position.

中文翻译：

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热约束植物细胞壁木质化的新证据

木质素增强了植​​物的机械强度，并实现了植物固有的水分传输。树木年代学，木材解剖学和植物生理学证据表明，木质素沉积的程度受到低温的限制。将这些发现置于生态环境中意味着对全球林木地位的重新思考。