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首页> 外文期刊>Protoplasma: An International Journal of Cell Biology >Ultrastructure and secretion of glandular trichomes in species of subtribe Cajaninae Benth (Leguminosae, Phaseoleae)
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Ultrastructure and secretion of glandular trichomes in species of subtribe Cajaninae Benth (Leguminosae, Phaseoleae)

机译：Subtribe Cajaninae Benth（Leguminosae，Phopololea）中腺毛状体的超微结构和分泌物

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摘要

The subtribe Cajaninae of papilionoid legumes has a pantropical distribution and comprises approximately 490 species. These species have diversified throughout dry environments where there are high temperatures and strong light. The subtribe stands out because all its representatives have vesicular glands. In addition, bulbous-based and capitate trichomes are important secretory structures present in all genera of the Cajaninae. We analyzed the ultrastructure and histochemistry of these glandular trichome types in leaflets of the three species of the subtribe. Using transmission electron microscopy and histochemical analyses, we link the glandular secretions to subcellular structures. We here report for the first time the type of exudate and ultrastructure of the glands of subtribe Cajaninae. Terpenoids and phenolics were confirmed by histochemistry tests, and we observed that the organelles responsible for biosynthesis of oils are the most representative in these glands. Each glandular trichome showed particular ultrastructural features compatible with the compounds produced. We suggest that these glandular trichomes, with their respective exudates, act in defense against herbivory and against possible damage by ultraviolet radiation.
机译：Papilionoid Legumes的亚热因子具有钙质分布，并包含约490种。这些物种在整个干燥环境中多样化，在那里存在高温和强光。子事件脱颖而出，因为它的所有代表都有凹凸不平腺。此外，基于球茎和引导的毛状体是Cajanina的所有属性中存在的重要分泌结构。我们分析了这些腺体滴毛体类型的超微结构和组织化学在三种子条的小叶中。使用透射电子显微镜和组织化学分析，我们将腺体分泌链接到亚细胞结构。我们在这里报告了第一次散发出和超微结构的含有毛刺Cajaninae。通过组织化学试验证实了萜类化合物和酚类，并且我们观察到负责油脂生物合成的细胞器是这些腺体中最具代表性的。每个腺体滴毛组显示出与所产生的化合物相容的特殊超微结构特征。我们建议，这些腺体毛皮，其各自的渗透物，以防御草食病和紫外线辐射的可能损伤。

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