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Morphology and ultrastructure of the Malpighian tubules in Kolla paulula (Hemiptera: Cicadellidae)

文献类型： 外文期刊

作者： Zhong, Haiying 1 ; Zhang, Yalin 1 ; Wei, Cong 1 ;

作者机构： 1.Northewest A&F Univ, Key Lab Plant Protect Resources & Pest Management, Minist Educ, Entomol Museum, Yangling 712100, Shaanxi, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, State Key Lab Breeding Base Zhejiang Sustainable, Hangzhou 310021, Zhejiang, Peoples R China

关键词： Excretory system;Morphology;Fine structure;Membracoidea;Microorganism

期刊名称：ZOOLOGISCHER ANZEIGER （ 影响因子：1.521； 五年影响因子：1.721 ）

ISSN：

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收录情况： SCI

摘要： Four Malpighian tubules of the leafhopper Kolla paulula (Walker) emerge from the junction of the midgut and hindgut, with terminal ends united in pairs and attached to half of the rectum. Each tubule has five structurally distinct regions: a thin anteriormost region, taking part in the formation of the filter chamber; a smooth and short intermediate duct; a long nodulose proximal segment; a glandular distal segment; and a long, thin and undulated terminal segment. The proximal region contains numerous hollow spherical nodules which are regularly arranged and form a spiral pattern. Its cytoplasm is packed with extensive rough endoplasmic reticulum and secretory granules. Clusters of fine electron-dense granules, glycogen granules and condensing vacuoles are prominent. This suggests that the proximal region is involved in secretion. Microorganisms are found in the cytoplasm and lumen of the proximal segment. The distal segment is rod-shaped, with cells filled with vacuoles containing hollow and honeycomb-surfaced microspheres known as "brochosomes", and four different stages of brochosome-development can be recognized. The terminal segment cells possess well-developed apical microvilli and basal infoldings associated with mitochondria. Rough endoplasmic reticulum, abundant mitochondria, and intracellular canaliculi densely packed with long microvilli are observed through the cytoplasm. These characters indicate the terminal segment is probably involved in secretion and ion transport. (C) 2015 Elsevier GmbH. All rights reserved.

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