Riesgo-Escovar J R, Piekos W B, Carlson J R
Department of Biology, Yale University, New Haven, CT 06520-8103, USA.
J Comp Physiol A. 1997 Feb;180(2):143-50. doi: 10.1007/s003590050035.
The ultrastructure and physiology of the maxillary palp of Drosophila melanogaster have been studied in wild-type and lozenge mutants. Olfactory physiology in the maxillary palp is shown to depend upon the lozenge(lz) gene. Reduced response amplitudes were recorded for all odorants tested, and the physiological defect was shown to map to the lz locus. The structure of the maxillary palp sensilla is described by scanning electron microscopy (SEM) at high magnification, initially in the wild-type. A linear arrangement of pores, connected by furrows, was found in one class of sensilla, the basiconic sensilla. In the lz3 mutant, morphological alterations in the basiconic sensilla and duplications of sensilla are documented by SEM. The correlation of structural abnormalities in the lz sensilla and physiological abnormalities in odorant response are consistent with an olfactory role for the basiconic sensilla of the maxillary palp.
已对野生型和菱形突变体果蝇的上颚触须的超微结构和生理学进行了研究。结果表明，上颚触须的嗅觉生理学依赖于菱形（lz）基因。对所有测试气味剂记录到的反应幅度均降低，且生理缺陷定位于lz位点。首先在野生型中，通过高倍扫描电子显微镜（SEM）描述了上颚触须感觉器的结构。在一类感觉器即锥形感觉器中发现了由沟连接的孔的线性排列。通过SEM记录了lz3突变体中锥形感觉器的形态改变和感觉器的重复。lz感觉器的结构异常与气味剂反应中的生理异常之间的相关性与上颚触须锥形感觉器的嗅觉作用一致。
