Guo Wenwen, Zhuo Mecao, Bai Youzhi, Fang Jiangping
School of Ecology and Environment, Tibet University, 850000, Xizang, China.
Institute of Xizang Plateau Ecology, Xizang Agriculture & Animal Husbandry University, 860000, Xizang, China.
Open Life Sci. 2025 May 27;20(1):20251116. doi: 10.1515/biol-2025-1116. eCollection 2025.
There is a variety of plants in the Tibetan plateau; yet, little is known about their variations in leaf anatomical traits and the implications for environmental adaptation. In this study, we investigated the anatomical traits of leaves in five L. species from Shergyla Mountain on the Tibetan plateau. The results showed that the five species have notable intraspecific and interspecific differences in the thickness of leaves, cuticle thickness, adaxial epidermis thickness, palisade parenchyma thickness, spongy parenchyma thickness, and tightness of leaf palisade parenchyma ( 0.05). There are autocorrelations among these anatomical traits of the leaves, indicating the existence of synergistic changes. The interspecific variations in leaves' anatomical structures illustrated their spectrum of plasticity to habitat heterogeneity. Our findings demonstrated that plants have developed typical ectopic leaves to adapt to harsh conditions of the Tibetan plateau.
青藏高原上有各种各样的植物；然而，关于它们叶片解剖特征的变异及其对环境适应的影响却知之甚少。在本研究中，我们调查了青藏高原色季拉山五种报春属植物叶片的解剖特征。结果表明，这五个物种在叶片厚度、角质层厚度、上表皮厚度、栅栏薄壁组织厚度、海绵薄壁组织厚度以及叶片栅栏薄壁组织紧密度方面存在显著的种内和种间差异（P < 0.05）。这些叶片解剖特征之间存在自相关性，表明存在协同变化。叶片解剖结构的种间变异说明了它们对生境异质性的可塑性范围。我们的研究结果表明，报春属植物已经进化出典型的异型叶以适应青藏高原的恶劣条件。
