Nunes Pablo Henrique, Camargo-Mathias Maria Izabel
Instituto de Biociências Departamento de Biologia, UNESP, Bela Vista, Rio Claro CEP 13506-900, SP, Brasil.
Micron. 2006;37(1):57-66. doi: 10.1016/j.micron.2005.06.005. Epub 2005 Jul 27.
Spittlebugs are insects that suck sap from plants and regurgitate saliva containing toxic enzymes into the leaves. As a consequence, the conductive channels are blocked resulting in dry leaves, thus giving a burned aspect to the plantation. This work performed ultrastructural analyses of the salivary glands of the sugarcane spittlebug Mahanarva fimbriolata, since these organs produce the enzymes that are injected into the plants, thus being responsible for the economic losses in the production of sugarcane. Three kinds of secretory cells are found in principal gland, forming the lobules I-IV. The main differences among these cells relate to size, morphology and electron density of the secretory vesicles. The accessory glands contain different secretory vesicles to those in the principal gland. Muscular cells are found around the entire gland. The different secretory vesicles found in both principal and accessory glands indicate that the gland produces different substances or that the secretion in the interior of cells passes through a maturation process.
沫蝉是一种从植物中吸食汁液并将含有有毒酶的唾液反刍到叶片中的昆虫。因此，传导通道被阻塞，导致叶片干枯，从而使种植园呈现出烧焦的样子。这项研究对甘蔗沫蝉Mahanarva fimbriolata的唾液腺进行了超微结构分析，因为这些器官产生注入植物体内的酶，从而导致甘蔗生产中的经济损失。在主腺中发现了三种分泌细胞，形成小叶I-IV。这些细胞之间的主要差异与分泌小泡的大小、形态和电子密度有关。副腺含有与主腺不同的分泌小泡。在整个腺体周围都发现了肌肉细胞。在主腺和副腺中发现的不同分泌小泡表明，腺体产生不同的物质，或者细胞内的分泌物经过了成熟过程。
