Dynamics of hydrocarbon biosynthesis and transport to the cuticle during pupal and early adult development in the cabbage looper Trichoplusia ni (Lepidoptera: Noctuidae)

Renobales, Mertxe de; Nelson, Dennis R.; Mackay, Marilyn E.; Zamboni, Anthony C.; Blomquist, Gary J.

doi:10.1016/0020-1790(88)90013-3

Cited by 21 publications

(6 citation statements)

References 13 publications

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“…Biological production of CTCll alkanes outside the genus Pinus is restricted to reports of these compounds as components of the resin in fruits of Pittosporum resiniferum (Nemethy and Calvin, 1982) and as trace components of floral fragrances (Knudsen et al, 1993); therefore, the levels of short-chain alkanes that accumulate in P. jeffreyi tissues (up to 7.1 mg g-' dry weight) represent the highest levels of short-chain alkane accumulation reported for any biological tissue. In addition, the rate of short-chain alkane biosynthesis observed from exogenous (Funk and Croteau, 1994) and is similar to the rates of alkane biosynthesis reported for plant and animal systems used to study long-chain alkane biosynthesis (Buckner and Kolattukudy, 1973;Largeau et al, 1980;Dwyer et al, 1986;Templier et al, 1987;de Renobales et al, 1988).…”

Section: Discussionsupporting

confidence: 77%

“…We establish that resin-duct morphology in different P. jefieyi tissues also can vary, although similar tissue-specific variation in resin-duct morphology has been reported for pine species containing strictly monoterpenoid turpentine. Finally, we demonstrate that alkane biosynthetic rates observed in tissues of 2-year-old P. jefieyi saplings incubated with exogenous basic precursors are greater than or similar to the rates of alkane biosynthesis in plant and animal tissues used to study long-chain alkane biosynthesis (Buckner and Kolattukudy, 1973;Largeau et al, 1980;Dwyer et al, 1986;Templier et al, 1987;de Renobales et al, 1988), indicating that P. jefieyi is an excellent system for the detailed study of shortchain alkane biochemistry. Plant Physiol.…”

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confidence: 65%

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Biochemistry of Short-Chain Alkanes (Tissue-Specific Biosynthesis of n-Heptane in Pinus jeffreyi)

1996

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Section: Discussionsupporting

confidence: 77%

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confidence: 65%

Biochemistry of Short-Chain Alkanes (Tissue-Specific Biosynthesis of n-Heptane in Pinus jeffreyi)

1996

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“…In a study with the cabbage looper, T. ni, it was shown that the cabbage looper doesn't reabsorb its cuticular hydrocarbons prior to molting. Instead, in the three different types of molts examined (larva-larva [ll]; larva-pupa and pupa-adult [7]) they are discarded with the cast skins. The larva-larva molt of S. eridunia also showed that no cuticular hydrocarbons were reabsorbed and suggested that this may be a common phenomena in insects.…”

Section: Discussionmentioning

confidence: 99%

“…Hydrocarbons were synthesized at specific time periods during larval and pupal development in the cabbage looper, Trichoplusia ni. The rate of hydrocarbon biosynthesis increased dramatically after each molt [7,11] during the feeding stages and fell to very low levels during the wandering stages.…”

Section: Introductionmentioning

confidence: 99%

“…The proportion of each class of hydrocarbon show large variations in different insect species [3]. The hydrocarbon composition can be affected by temperature [5], habitat [6], and developmental stage [7]. The relationship between low cuticular permeability and the occurrence of long-chain methylalkanes in cuticular hydrocarbon mixtures has been demonstrated in several insect species [4].…”

Section: Introductionmentioning

confidence: 99%

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Identification, accumulation, and biosynthesis of the cuticular hydrocarbons of the southern armyworm, Spodoptera eridania (cramer) (lepidoptera: Noctuidae)

Guo¹,

Blomquist²

1991

Arch Insect Biochem Physiol

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The accumulation and biosynthesis of cuticular and internal hydrocarbons in the Southern armyworm, Spodoptera eridania, were examined at closely timed intervals during larval and pupal development. Gas chromatography-mass spectrometry (GC-MS) was used to identify n-alkanes, monomethylalkanes, and dimethylalkanes ranging in chain length from 23 to 35 carbons. The amount of cuticular hydrocarbon stayed relatively constant duringeach stadium, while the amount of internal hydrocarbon increased dramatically during the first half of each larval stadium, presumably to replace the cuticular hydrocarbon lost on the shed cast skin with each molt. The accumulation of internal hydrocarbon was mirrored by large increases in the rate of incorporation of labeled acetate into the hydrocarbon fraction. Hydrocarbon production fell to very low rates during the latter part of the fourth and fifth larval stadia. Relatively high rates of hydrocarbon production were observed during the first and last one-third of the pupal stage and essentially all of the hydrocarbons produced during this stage remained internal. These data document large changes in the rates of hydrocarbon production during development in S. eridania and suggest that most of the hydrocarbon produced during each stage was stored internally and then transported to the cuticle of the next stage.

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Hydrocarbon dynamics within and between nestmates inCataglyphis niger (Hymenoptera: Formicidae)

1995

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The objective of the present study was to evaluate the interrelationship between the cuticular and postpharyngeal glands' hydrocarbons, both in the individual ant and during its interaction with nestmates. In vivo radiochemical assays were employed to monitor the de novo hydrocarbon biosynthesis from acetate in the ant's body. The newly synthesized hydrocarbons appeared first internally and after 24 hr they accumulated in the postpharyngeal gland and on the cuticular surface. Blocking the possibility of external transfer of hydrocarbons between cuticle and postpharyngeal gland led to a significant decrease of labeled hydrocarbons in the postpharyngeal gland. In addition, during encounters between labeled and unlabeled ants, newly synthesized hydrocarbons were transferred, mainly via trophallaxis, but also by allo-grooming and physical contact. In view of these results, we propose as a model for their dynamics that hydrocarbons are synthesized in tissues associated with the integument. Through self-grooming, there is a constant exchange of hydrocarbons between the cuticular surface and the postpharyngeal gland. Furthermore, in encounters between nestmates, hydrocarbons are exchanged among them mostly by trophallaxis, with the mediation of the postpharyngeal gland. Thus, this gland acts as a pool for mixing colonial hydrocarbons and may serve to attain a unified colony odor.

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Dynamics of hydrocarbon biosynthesis and transport to the cuticle during pupal and early adult development in the cabbage looper Trichoplusia ni (Lepidoptera: Noctuidae)

Cited by 21 publications

References 13 publications

Biochemistry of Short-Chain Alkanes (Tissue-Specific Biosynthesis of n-Heptane in Pinus jeffreyi)

Biochemistry of Short-Chain Alkanes (Tissue-Specific Biosynthesis of n-Heptane in Pinus jeffreyi)

Identification, accumulation, and biosynthesis of the cuticular hydrocarbons of the southern armyworm, Spodoptera eridania (cramer) (lepidoptera: Noctuidae)

Hydrocarbon dynamics within and between nestmates inCataglyphis niger (Hymenoptera: Formicidae)

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