In plant species, the effects of flooding and salinity are commonly studied under controlled conditions in order to understand their acclimation to environmental stresses. Nevertheless, each stress is usually considered separately and laboratory conditions cannot encompass the complexity of the natural ecosystem, often concealing the true plant response. Our work aimed therefore at studying plant responses to flooding and salinity in the field, focusing on two target halophytes and on their reserve organs, i.e. rhizomes of Limonium narbonense and woody stems of Salicornia fruticosa. The physiological response was investigated measuring non-structural carbohydrates (NSCs) and amino acids (AA), and considering the two growing stages of the species, i.e. the growing and the seed ripening seasons. L. narbonense rhizomes showed a larger amount of starch and all measured osmolytes, i.e. NSCs, AA and proline, compared to S. fruticosa woody stem, where plant response to environmental stress seemed linked chiefly to soluble NSCs. The effects on soluble NSCs were mainly driven by flooding and were influenced by salinity only at low flooding stress. The two species showed a contrasting strategy against flooding and salinity based on soluble NSCs, and with a more intense response during the seed ripening season. Large amount of AA, proline in particular, suggested the involvement of these osmolytes in the salinity tolerance in L. narbonense, regardless to the intensity of the stress.

在植物物种中，通常在受控条件下研究洪水和盐分的影响，以了解其对环境胁迫的适应性。尽管如此，通常单独考虑每种胁迫，并且实验室条件不能涵盖自然生态系统的复杂性，通常掩盖了真实的植物反应。我们的工作在研究在该领域的洪水和盐碱植物响应因此为目标，着眼于两个目标盐生植物和它们的储备机构，即根茎补血narbonense和木质茎盐角草灌丛。通过测量非结构性碳水化合物（NSC）和氨基酸（AA），并考虑该物种的两个生长阶段，即生长和种子成熟季节，来研究其生理反应。L. narbonense根茎显示出淀粉和所有测量渗透物，即神经干细胞，AA和脯氨酸用量较大，相比S.紫穗槐木本茎，植物对环境胁迫的反应似乎主要与可溶性NSC有关。对可溶性NSC的影响主要是由淹水驱动的，并且仅在低淹水应力下才受盐度的影响。这两个物种在可溶性NSC的基础上显示出针对淹水和盐分的对比策略，并且在种子成熟期反应更加强烈。大量的AA，尤其是脯氨酸，表明这些渗透液参与了纳波香柠檬的耐盐性，而与压力强度无关。