Paoletti E
Istituto Protezione Piante, Consiglio Nazionale delle Ricerche, Via Madonna del Piano, I-50019 Sesto Fiorentino, Italy.
Environ Pollut. 2005 Oct;137(3):372-9. doi: 10.1016/j.envpol.2005.01.028.
Experimental results from plants receiving elevated doses of UV-B radiation generally show that Mediterranean forest species are well protected against increases in UV-B radiation. Natural adaptations to water stress and excess light (elevated concentrations of UV-B screening compounds, leaf hairs, thick cuticle and epidermis), and UV-B responses (thickening of the cuticle, increase in carotenoids) may avoid or counter-balance UV-B radiation damage. This response confirms that Mediterranean forest vegetation is adapted to face oxidative stress factors, such as elevated tropospheric ozone concentrations, drought and high radiation, including UV-B. Nevertheless, in the long term, species-specific and season-specific differential responses in growth, physiology, phenology and reproductive behaviour may alter the interactions between species and lead to slow but important changes in ecosystem structure and function.
接受高剂量UV - B辐射的植物的实验结果通常表明，地中海森林物种对UV - B辐射增加具有良好的防护能力。对水分胁迫和过量光照的自然适应（UV - B屏蔽化合物浓度升高、叶毛、厚角质层和表皮）以及UV - B响应（角质层增厚、类胡萝卜素增加）可能避免或抵消UV - B辐射损伤。这种响应证实，地中海森林植被适应面对氧化应激因素，如对流层臭氧浓度升高、干旱和包括UV - B在内的高辐射。然而，从长远来看，物种特异性和季节特异性在生长、生理、物候和繁殖行为方面的差异响应可能会改变物种间的相互作用，并导致生态系统结构和功能缓慢但重要的变化。
