PDF(Pubmed)
Abstract：
The Brazilian Atlantic Forest, renowned for its exceptional species richness and high endemism, acts as a vital reservoir of terrestrial biodiversity, often referred to as a biodiversity hotspot. Consequently, there is an urgent need to restore this forest to safeguard certain species and to unravel the ecophysiological adaptations of others. This study aims to integrate some physiological parameters, including gas exchange and chlorophyll a fluorescence, with anatomical and metabolic techniques to elucidate how five different native species (Paubrasilia echinata, Chorisia glaziovii, Clusia nemorosa, Licania tomentosa, and Schinus terebinthifolius), each occupying distinct ecological niches, respond to seasonal variations in rainfall and their consequences. Our investigation has revealed that C. nemorosa and P. echinata exhibit robust mechanisms to mitigate the adverse effects of drought. In contrast, others demonstrate greater adaptability (e.g., S. terebinthifolia and C. glaziovii). In this context, exploring metabolic pathways has proven invaluable in comprehending the physiological strategies and their significance in species acclimatization. This study provides a comprehensive overview of the impact of water restrictions and their consequential effects on various species, defining the strategies each species uses to mitigate water privation during the dry season.
摘要：
巴西大西洋森林,以其特殊的物种丰富和高度特有性而闻名，作为陆地生物多样性的重要蓄水池，通常被称为生物多样性热点。因此,迫切需要恢复这片森林，以保护某些物种，并解开其他物种的生态生理适应。本研究旨在整合一些生理参数，包括气体交换和叶绿素a荧光，用解剖学和代谢技术来阐明五种不同的本地物种(Paubrasiliaechinata，Chorisiaglaziovii,线虫簇群,Licaniatomentosa,和西棘)，每个都占据着不同的生态位，应对降雨的季节性变化及其后果。我们的研究表明，线虫和P.chinata表现出强大的机制来减轻干旱的不利影响。相比之下,其他人表现出更大的适应性(例如，S.terbinthifolia和C.glaziovii)。在这种情况下，探索代谢途径在理解生理策略及其在物种适应中的意义方面已被证明是无价的。这项研究全面概述了水限制的影响及其对各种物种的相应影响，定义每个物种在旱季缓解缺水的策略。
