Cellular localization and proposed function of midguttrehalase in the silkworm larva, Bombyx mori
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The feeding status regulates the action of insulin and 20-hydroxyecdysone on haemolymph trehalose level in Bombyx larvae
2021, Comparative Biochemistry and Physiology Part - B: Biochemistry and Molecular BiologyCitation Excerpt :The enzyme trehalase aids the breakdown of trehalose to glucose molecules for energy purpose. The trehalase activity in B. mori has been reported in tissues such as fat body, midgut, ovary, and silk gland (Azuma and Yamashita, 1985; Keshan and Ray, 1998, 2001). In haemolymph, the trehalose level fluctuates between 7 and 21 mM during the feeding phase of the last larval instar in B. mori (Kh. and Keshan, 2019).
Effects of the plant volatile trans‑2-hexenal on the dispersal ability, nutrient metabolism and enzymatic activities of Bursaphelenchus xylophilus
2017, Pesticide Biochemistry and PhysiologyCitation Excerpt :Trehalase activity can be enhanced under environmental stresses, promoting the transformation of trehalose into glucose [46]. In our study, trehalase activity initially increased, which might help in resisting the stress of trans‑2-hexenal by converting trehalose to metabolic energy [51]. However, trehalase activity then decreased at 48 h, which might be due to the metabolic disturbance caused by trans‑2-hexenal and might also explain the increase in carbohydrate content at 48 h.
Molecular cloning and expression analysis of soluble and membrane-bound trehalase genes in the cotton bollworm, Helicoverpa armigera
2015, Journal of Asia-Pacific EntomologyCitation Excerpt :SeTre-2 in S. exigua has an important role in CHSB expression and chitin synthesis in the midgut (Chen et al., 2010). HaTreh-2 strongly expressed in the midgut may be involved in incorporating trehalose from the hemolymph into muscular cells and supporting peristaltic movement of the midgut by providing energy to visceral muscles (Azuma and Yamashita, 1985; Mitsumasu et al., 2005) and the chitin synthesis pathway in the midgut (Tang et al., 2008; Chen et al., 2010). Higher expression of HaTreh-2 in the head may be adapted to the energy requirements of brain activity and chitin synthesis.
Characterization of putative soluble and membrane-bound trehalases in a hemipteran insect, Nilaparvata lugens
2009, Journal of Insect PhysiologyRegulation of soluble and membrane-bound trehalase activity and expression of the enzyme in the larval midgut of the bamboo borer Omphisa fuscidentalis
2008, Insect Biochemistry and Molecular Biology