Environmental conditions determine plants performance as they shape - among other key factors - leaf features and physiology. However, little is known regarding to the changes occurring in leaf cell wall composition during the acclimation to an environmental stress and, specially, if these changes have an impact on other leaf physiology aspects. In order to induce changes in photosynthesis, leaf water relations and cell wall main components (i.e., cellulose, hemicelluloses and pectins) and see how they co-vary, Vitis vinifera cv. Grenache was tested under four different conditions: (i) non-stress conditions (i.e., control, with high summer temperature and irradiance), (ii) growth chamber conditions, (iii) growth chamber under water stress and (iv) cold growth chamber. Plants developed in growth chambers decreased net CO2 assimilation (AN) and mesophyll conductance (gm) compared to control. Although cold did not change the bulk modulus of elasticity (ε), it decreased in growth chamber conditions and water stress. Control treatment showed the highest values for photosynthetic parameters and ε as well as for leaf structural traits such as leaf mass area (LMA) and leaf density (LD). Whereas cellulose content correlated with photosynthetic parameters, particularly AN and gm, pectins and the amount of alcohol insoluble residue (AIR) - an approximation of the isolated cell wall fraction - correlated with leaf water parameters, specifically, ε. Although preliminary, our results suggest that cell wall modifications due to environmental acclimations can play a significant role in leaf physiology by affecting distinctly photosynthesis and water relations in a manner that might depend on environmental conditions.

中文翻译：

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细胞壁成分调节 Vitis vinifera cv. 的光合作用和叶水关系。适应不同环境条件的歌海娜

环境条件决定植物的性能，因为它们的形状——除其他关键因素外——叶片特征和生理。然而，关于在适应环境压力期间叶细胞壁组成发生的变化，特别是这些变化是否对其他叶片生理学方面产生影响，我们知之甚少。为了诱导光合作用、叶水关系和细胞壁主要成分（即纤维素、半纤维素和果胶）的变化并观察它们如何共同变化，Vitis vinifera cv. 歌海娜在四种不同条件下进行测试：(i) 非压力条件（即控制，夏季高温和辐照度高），(ii) 生长室条件，(iii) 水分胁迫下的生长室和 (iv) 冷生长室. 与对照相比，在生长室中发育的植物减少了净 CO2 同化 (AN) 和叶肉电导 (gm)。尽管寒冷没有改变体积弹性模量 (ε)，但它在生长室条件和水分胁迫下会降低。对照处理显示光合参数和 ε 以及叶片结构性状如叶质量面积 (LMA) 和叶片密度 (LD) 的最高值。而纤维素含量与光合作用参数相关，特别是 AN 和 gm，果胶和酒精不溶性残留物 (AIR) 的量 - 分离细胞壁分数的近似值 - 与叶水参数相关，特别是 ε。虽然是初步的，