Drought effects on the plasticity in vessel traits of two endemic Magnolia species in the tropical montane cloud forests of eastern Mexico

摘要: Aims: We aimed to evaluate how climatic fluctuations influence the plasticity of anatomical vessel traits and width annual tree-rings two relict-endemic Mexican Magnolia species. Notwithstanding, few studies have assessed drought effect on in tropical montane cloud trees eastern Mexico. Methods: Through digital images growth rings, we tree radial rate, age regarding species studied. compared density, hydraulic diameter percentage conductive area years (DY) non-drought (NDY) Important Findings: For first time, that occurs porous wood long-term was analysed for endangered (Magnolia vovidesii M. schiedeana) from forests found temperature precipitation were strongly associated with differences tree-ring when DY NDY compared. Our analyses revealed a high anatomy diffuse-porous related and/or water availability both concluded adaptations resulted substantial reduction NDY, plastic played an essential role transport safety survival studied during stressful long periods.