FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2024267536> ?p ?o ?g. }

• W2024267536 endingPage "450" @default.
• W2024267536 startingPage "439" @default.
• W2024267536 abstract "The present study describes both the ultrastructural and the biochemical alterations induced by the parasitoid Cardiochiles nigriceps Viereck on the prothoracic glands of the last (fifth) instar larvae of its host Heliothis virescens (F.). Gross morphological degeneration or signs of necrosis of the prothoracic gland cells were not observed. A rough endoplasmic reticulum more developed and electrondense than in non-parasitized controls was the only ultra-structural change occurring in the prothoracic glands of parasitized host last instar larvae. However, although structurally undegraded, 5 days after parasitoid oviposition into newly moulted host last (fifth) instar larvae, the prothoracic gland cells appeared to be functionally dead and became permeable to trypan blue. In contrast, cells of the prothoracic glands explanted on day 4 of the fifth instar, 3 days after parasitism, performed as above, were still alive and did not absorb the trypan blue, as observed in synchronous non-parasitized controls. These glands were used to study in vitro the major biochemical alterations at cellular level induced by the parasitoid. Ecdysteroid production, RNA synthesis, protein synthesis and phosphorylation were studied in response to crude prothoracicotropic hormone (PTTH) extract, forskolin and dibutyryl cAMP (dbcAMP), these latter compounds mimicking the PTTH action at different levels of the signal transduction pathway. The prothoracic glands of H. virescens last instar larvae, parasitized by C. nigriceps, showed a severely depressed biosynthesis of ecdysteroids, which was not resumed with any of the stimulating treatments performed. This severely depressed biosynthetic activity was associated with a remarkable reduction in the rate of total protein synthesis and to a marked underphosphorylation of those proteins normally phosphorylated when healthy glands are challenged with dbcAMP. However, the early steps of the PTTH signal transduction pathway in the host prothoracic glands are apparently not altered by C. nigriceps parasitism. This is supported by the identical effect of PTTH and dbcAMP treatments on RNA synthesis in the prothoracic glands of both parasitized and non-parasitized larvae. In fact, in both cases a reduced level of [3H]uridine incorporation into the total RNA synthesized in vitro was observed in stimulated glands. These experimental data would suggest the occurrence of a parasitoid-induced block of protein synthesis translation in host prothoracic glands, partly determined by the marked underphosphorylation of key target regulatory proteins." @default.
• W2024267536 created "2016-06-24" @default.
• W2024267536 creator A5009984296 @default.
• W2024267536 creator A5014396865 @default.
• W2024267536 creator A5079445667 @default.
• W2024267536 creator A5088333860 @default.
• W2024267536 date "1997-05-01" @default.
• W2024267536 modified "2023-10-17" @default.
• W2024267536 title "Biochemical and ultrastructural alterations in prothoracic glands of Heliothis virescens (F.) (Lepidoptera: Noctuidae) last instar larvae parasitized by Cardiochiles nigriceps Viereck (Hymenoptera: Braconidae)" @default.
• W2024267536 cites W113535704 @default.
• W2024267536 cites W1924414343 @default.
• W2024267536 cites W1970492349 @default.
• W2024267536 cites W1981962534 @default.
• W2024267536 cites W1983666654 @default.
• W2024267536 cites W1984620996 @default.
• W2024267536 cites W1985889818 @default.
• W2024267536 cites W1985911331 @default.
• W2024267536 cites W1992782771 @default.
• W2024267536 cites W1993092024 @default.
• W2024267536 cites W1996588504 @default.
• W2024267536 cites W1996836666 @default.
• W2024267536 cites W2002159913 @default.
• W2024267536 cites W2003233967 @default.
• W2024267536 cites W2007256446 @default.
• W2024267536 cites W2008369936 @default.
• W2024267536 cites W2011280105 @default.
• W2024267536 cites W2018799861 @default.
• W2024267536 cites W2020011281 @default.
• W2024267536 cites W2022210905 @default.
• W2024267536 cites W2026777618 @default.
• W2024267536 cites W2026885676 @default.
• W2024267536 cites W2029582802 @default.
• W2024267536 cites W2034084951 @default.
• W2024267536 cites W2034912738 @default.
• W2024267536 cites W2039453735 @default.
• W2024267536 cites W2039932980 @default.
• W2024267536 cites W2041605548 @default.
• W2024267536 cites W2041698584 @default.
• W2024267536 cites W2043431691 @default.
• W2024267536 cites W2045561545 @default.
• W2024267536 cites W2047526339 @default.
• W2024267536 cites W2048837290 @default.
• W2024267536 cites W2049253726 @default.
• W2024267536 cites W2056966593 @default.
• W2024267536 cites W2061567922 @default.
• W2024267536 cites W2067250536 @default.
• W2024267536 cites W2073232083 @default.
• W2024267536 cites W2076063939 @default.
• W2024267536 cites W2079390052 @default.
• W2024267536 cites W2082441646 @default.
• W2024267536 cites W2082797192 @default.
• W2024267536 cites W2084126566 @default.
• W2024267536 cites W2084692097 @default.
• W2024267536 cites W2095611557 @default.
• W2024267536 cites W2096868370 @default.
• W2024267536 cites W2098381783 @default.
• W2024267536 cites W2100837269 @default.
• W2024267536 cites W2107163098 @default.
• W2024267536 cites W2107704908 @default.
• W2024267536 cites W2127911529 @default.
• W2024267536 cites W2156638980 @default.
• W2024267536 cites W2165055107 @default.
• W2024267536 cites W2171376660 @default.
• W2024267536 cites W2315863060 @default.
• W2024267536 cites W2317340325 @default.
• W2024267536 cites W2317907959 @default.
• W2024267536 cites W2334494708 @default.
• W2024267536 cites W2408298820 @default.
• W2024267536 cites W2467489447 @default.
• W2024267536 cites W2471225901 @default.
• W2024267536 cites W79261055 @default.
• W2024267536 doi "https://doi.org/10.1016/s0965-1748(97)00016-7" @default.
• W2024267536 hasPublicationYear "1997" @default.
• W2024267536 type Work @default.
• W2024267536 sameAs 2024267536 @default.
• W2024267536 citedByCount "34" @default.
• W2024267536 countsByYear W20242675362012 @default.
• W2024267536 countsByYear W20242675362013 @default.
• W2024267536 countsByYear W20242675362014 @default.
• W2024267536 countsByYear W20242675362018 @default.
• W2024267536 countsByYear W20242675362019 @default.
• W2024267536 countsByYear W20242675362021 @default.
• W2024267536 crossrefType "journal-article" @default.
• W2024267536 hasAuthorship W2024267536A5009984296 @default.
• W2024267536 hasAuthorship W2024267536A5014396865 @default.
• W2024267536 hasAuthorship W2024267536A5079445667 @default.
• W2024267536 hasAuthorship W2024267536A5088333860 @default.
• W2024267536 hasConcept C126322002 @default.
• W2024267536 hasConcept C134018914 @default.
• W2024267536 hasConcept C173758957 @default.
• W2024267536 hasConcept C177756618 @default.
• W2024267536 hasConcept C2776905768 @default.
• W2024267536 hasConcept C2778260489 @default.
• W2024267536 hasConcept C2778350275 @default.
• W2024267536 hasConcept C2778923344 @default.
• W2024267536 hasConcept C2780817676 @default.
• W2024267536 hasConcept C32476901 @default.
• W2024267536 hasConcept C47002013 @default.

• next