期刊
INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY
卷 41, 期 8, 页码 545-562出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ibmb.2011.03.006
关键词
Bombyx mori; Odorant-binding protein; Takeout; Chemosensory protein; Maxillary galea; Expressed sequence tag
资金
- National Institute of Agrobiological Sciences
- Ministry of Agriculture, Forestry and Fisheries of Japan
- Ministry of Education, Culture, Sports, Science and Technology of Japan
Expressed sequence tags (ESTs) of the maxillary galea of the silkworm were analyzed to identify proteins involved in food selection systems. From the 1251 redundant genes of the ESTs, we identified 7 odorant-binding protein-like genes (bmObpL), 6 takeout-like genes (bmToL), and 6 chemosensory protein genes (bmCsp). Quantitative RT-PCR analysis indicated that bmObpL1, bmObpL2, bmObpL3, bmObpL5, bmToL1, bmToL3, and bmorCsp15 were predominantly expressed in the larval oral appendages, such as the maxilla, labrum, labium and antenna. Immunocytochemical analysis indicated that the proteins of bmObpL1, bmObpL3, and bmToL1 were localized in the gustatory chemosensilla on the maxillary galea and olfactory sensilla in the antenna. The proteins encoded by bmObpL1 and bmObpL3 were detected in the gustatory chemosensilla of the epipharynx. However, bmObpL1 and bmToL1 were also detected in tactile hairs and in the epidermis of several chemosensory organs. The bmObpL2 protein was localized inside and in the epidermis around the chemosensilla, tactile hairs, and wide surface of the epipharynx. From these results, bmObpL3 is the most likely to have a dedicated role in chemoreception in the silkworm, Bombyx mori. (C) 2011 Elsevier Ltd. All rights reserved.
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