Distribution and accumulation of storage protein-1 in ovary of Hyphantria cunea Drury

Archives of Insect Biochemistry and Physiology
S J SeoH R Kim

Abstract

Storage protein-1 (SP-1) is a major storage protein found in the hemolymph and fat body of Hyphantria cunea. In this study, the uptake and accumulation of SP-1 into the ovary of H. cunea was investigated using biochemical and immunocytochemical methods. SP-1 in H. cunea has a high methionine content (4.6%) but is not female-specific, like other high methionine storage proteins. In the 6-day-old pupal ovary, SP-1 was detectable in trace amounts but accumulated to significant levels toward the end of the pupal stage. After adult emergence, SP-1 rapidly decreased in the ovarian follicles and remained low in the egg. This suggest that SP-1 is either extensively modified or degraded, causing a loss of its antigenic property in the ovary after adult emergence. During vitellogenesis, SP-1 is present in the hemolymph and penetrates through the tunica propria to reach the perioocytic space. From there, SP-1 is incorporated into yolk bodies. These results clearly show that SP-1 is taken up by the developing oocyte. Its disappearance suggests that SP-1 might be an amino acid reservoir for providing precursors for egg formation, in contrast to yolk proteins, which are utilized during postembryonic development.

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Citations

Nov 10, 2013·PloS One·Larissa A MartinsAndré F Cardoso
Jun 15, 2007·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Muhammad AshfaqHisaaki Tsumuki
Jul 19, 2002·Archives of Insect Biochemistry and Physiology·Hyang-Mi CheonSook-Jae Seo
Oct 24, 2001·Archives of Insect Biochemistry and Physiology·H M CheonS J Seo
Sep 20, 2006·Archives of Insect Biochemistry and Physiology·Márcia M G BitondiZilá L P Simões
Oct 12, 2004·Insect Biochemistry and Molecular Biology·Hong Ja KimSook Jae Seo
Apr 7, 2010·Journal of Insect Physiology·Damara ManoharAparna Dutta-Gupta
May 11, 2010·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Manohar Damara, Aparna Dutta-Gupta

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