Abstract Globoid leaf galls with an abaxial concavity are induced by an undescribed species of Meunieriella Kieffer, 1909 (Cecidomyiidae) in Avicennia schaueriana Stapf & Leechm. ex Moldenke (Acanthaceae), a plant extremely adapted to mangroves. The gall-inducers may potentiate anatomical adaptations of host plants for producing a better shelter and food. We expected that some A. schaueriana important adaptations, such as salt glands, were potentiated in galls. Anatomical, histochemical and histometric analyses of non-galled leaves and galls were performed to assess which adaptive features are potentiated in gall development. Epidermis was not significantly altered in adaxial surface, and in the abaxial surface, hypertrophy of epidermal cells seems to compensate the increment in surface area during the gall development. Both the outer and inner gall compartments, separated by a sclerenchyma cap, maintain a dorsiventral arrangement. In such compartments, the proliferated water-storage parenchyma occupies the adaxial layers, followed by a palisade parenchyma, and elongated spongy parenchyma cells. Therefore, dorsiventrality is marked by the differential hyperplasia (predominant in adaxial layers) and cell hypertrophy (predominant in abaxial layers) in galls. Few layers of small nutritive cells are observed in contact to gall chamber, accumulating proteins, lipids, and sugars. The galling Meunieriella sp. can manipulate some adaptations to its own benefit, but A. schaueriana have strong constraints in leaf ontogenesis, possibly due to its specific adaptations to variable salinity and flooding. The proliferated water-storage parenchyma in gall may function as a site of ion accumulation, which could increase the bioaccumulation potential of the organ. The boundaries of host plant plasticity, related to specific environmental constraints, may be determinant in gall anatomical diversity.

中文翻译：

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白骨科（Avicennia schaueriana）叶片解剖学适应性的调节由磨毛 Meunieriella (Cecidomyiidae)

摘要 具有背面凹陷的球形叶瘿是由 Avicennia schaueriana Stapf & Leechm 中的一种未描述的 Meunieriella Kieffer, 1909 (Cecidomyiidae) 物种引起的。ex Moldenke (Acanthaceae)，一种非常适应红树林的植物。胆诱导剂可能会增强寄主植物的解剖适应性，以提供更好的住所和食物。我们预计一些 A. schaueriana 的重要适应性，如盐腺，在瘿中得到增强。对非瘿叶和瘿进行解剖学、组织化学和组织学分析，以评估哪些适应性特征在瘿发育中得到增强。表皮在正面没有显着改变，在背面，表皮细胞的肥大似乎补偿了胆囊发育过程中表面积的增加。外胆室和内胆室均由厚壁组织帽隔开，保持背腹排列。在这样的隔室中，增殖的储水薄壁组织占据了近轴层，其次是栅栏薄壁组织和细长的海绵薄壁组织细胞。因此，背腹的特点是胆囊中的差异增生（主要在正面层）和细胞肥大（主要在背面层）。观察到与胆囊接触的小营养细胞层很少，积累蛋白质、脂质和糖。令人痛苦的 Meunieriella sp。A. schaueriana 可以操纵一些适应以使其自身受益，但 A. schaueriana 在叶子个体发育方面有很强的限制，这可能是由于其对可变盐度和洪水的特定适应。胆汁中增殖的储水薄壁组织可能是离子积累的场所，可以增加器官的生物积累潜力。寄主植物可塑性的边界，与特定的环境限制有关，可能是瘿解剖多样性的决定因素。