Salt stress is harmful to plants, especially for those that live under conditions of intense salt aport. For this reason, several species present alternatives to prevent or diminish the damages that high salt concentrations may cause to the cells. Salt glands are one of these alternatives once they are specialized structures that secrete salt. Here, we aimed to investigate if the glandular trichomes in the leaves of Jacquinia armillaris are salt glands. Anatomical and ultrastructural observations showed that the glandular trichomes in J. armillaris resemble the salt glands from other recretohalophytes Primulaceae, such as, their occurrence in sunken regions in the leaf epidermis, the presence of a large basal cell that acts as a collecting cell, the detachment of the cuticle from the outer periclinal walls forming a cuticular chamber, the thickness of the cuticle in the stalk portion of the trichome, and the presence of sodium and chloride ions in the secretion and in the xylem. Altogether, the gathered results support the hypothesis that the glandular trichomes in J. armillaris are adapted to salt secretion, thus characterizing as salt glands.

中文翻译：

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Jacquinia armillaris (Theophrastoideae-Primulaceae) 的腺毛是盐腺吗？

盐胁迫对植物有害，特别是对于那些生活在强盐港条件下的植物。出于这个原因，一些物种提出了替代方案来防止或减少高盐浓度可能对细胞造成的损害。盐腺是这些替代品之一，一旦它们成为分泌盐分的特殊结构。在这里，我们的目的是调查 Jacquinia armillaris 叶子中的腺毛是否是盐腺。解剖学和超微结构观察表明，蜜环菌的腺毛类似于报春科其他隐生盐生植物的盐腺，例如，它们出现在叶表皮的凹陷区域，存在作为收集细胞的大基底细胞，角质层从外周壁脱离，形成角质层，毛状体茎部角质层的厚度，以及分泌物中和木质部中钠离子和氯离子的存在。总而言之，收集到的结果支持以下假设：蜜环菌中的腺毛适应盐分分泌，从而表征为盐腺。