Ultrastructure of the mycangium of the southern pine beetle, Dendroctonus frontalis (Coleoptera: Curculionidae, Scolytinae): complex morphology for complex interactions: Ultrastructure of the mycangium of the southern pine beetle
Ultrastructure of the mycangium of the southern pine beetle, Dendroctonus frontalis (Coleoptera: Curculionidae, Scolytinae): complex morphology for complex interactions: Ultrastructure of the mycangium of the southern pine beetle
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DOI：
10.1111/j.1463-6395.2011.00500.x
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发表时间：
2011-07
期刊：
影响因子：
1.2
通讯作者：
C. Yuceer;Chuan-yu Hsu;N. Erbilgin;K. Klepzig
中科院分区：
文献类型：
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作者：
C. Yuceer;Chuan-yu Hsu;N. Erbilgin;K. Klepzig
刘玉玉，徐志强，刘志强。， Erbilgin， N和Klepzig， K.D. 2011。南松甲虫（鞘翅目：松甲科）菌丝的超微结构：复杂相互作用下的复杂形态。-动物学报（斯德哥尔摩）92:216-224。南松甲虫（Dendroctonus frontalisZimmermann）是南方松林最重要的经济害虫。甲虫携带真菌细胞的特殊角质层结构，称为菌丝。对肌根的超微结构和功能了解甚少。采用低温破裂和扫描电镜观察SPB菌根及其周围组织的超微结构特征。在前胸前部两侧各有一个肌根，止于背侧的“肌根桥”。这个硬化的肌桥似乎没有在两个肌根之间提供通道，这表明每个肌根都独立地起作用。肌根周围有丰富的气管，通过前胸内的开口与外部相连。在前胸的内壁和前襞也观察到先前未知的覆盖在肌鞘腺细胞上的凹坑。我们假设这些开口和坑可能在决定哪些真菌进入并在菌丝内生长方面发挥作用。
Yuceer, C, Hsu, C.‐Y., Erbilgin, N and Klepzig, K.D. 2011. Ultrastructure of the mycangium of the southern pine beetle,Dendroctonus frontalis(Coleoptera: Curculionidae, Scolytinae): complex morphology for complex interactions. —Acta Zoologica(Stockholm)92: 216–224.The southern pine beetle (SPB) (Dendroctonus frontalisZimmermann) is the most economically important pest of southern pine forests. Beetles carry fungal cells within specialised cuticular structures, called mycangia. Little is known about the mycangia ultrastructure or function. We used cryo‐fracturing and scanning electron microscopy to examine the ultrastructural features of SPB mycangia and surrounding tissues. Mycangia, one on each side of anterior portion of the prothorax, are terminated on the dorsal side at a ‘mycangial bridge’. This sclerotised mycangial bridge does not appear to provide a passage between the two mycangia, suggesting that each mycangium functions independently. Mycangia are surrounded by abundant tracheoles connecting the structures to the outside via openings within the prothorax. Previously unknown pits overlying the mycangial gland cells were also observed in both the inner wall and anterior fold of prothorax. We hypothesise that these openings and pits may play roles in determining which fungi enter, and grow within, the mycangium.