Molecular Interactions between the Specialist Herbivore<i>Manduca sexta</i> (Lepidoptera, Sphingidae) and Its Natural Host <i>Nicotiana attenuata</i>. II. Accumulation of Plant mRNAs in Response to Insect-Derived Cues is a research paper published in Plant Physiology (2001). On theSindex it has a DataRank of 3.2. It has been cited 99 times, with 56 citing works in its 1-hop citation network.
Abstract The transcriptional changes in Nicotiana attenuataTorr. ex Wats. elicited by attack from Manduca sextalarvae were previously characterized by mRNA differential display (D. Hermsmeier, U. Schittko, I.T. Baldwin [2001] Plant Physiol 125: 683–700). Because herbivore attack causes wounding, we disentangled wound-induced changes from those elicited by M. sexta oral secretions and regurgitant (R) with a northern analysis of a subset of the differentially expressed transcripts encoding threonine deaminase, pathogen-induced oxygenase, a photosystem II light-harvesting protein, a retrotransposon homolog, and three unknown genes. R extensively modified wound-induced responses by suppressing wound-induced transcripts (type I) or amplifying the wound-induced response (type II) further down-regulating wound-suppressed transcripts (type IIa) or up-regulating wound-induced transcripts (type IIb). It is interesting that although all seven genes displayed their R-specific patterns in the treated tissues largely independently of the leaf or plant developmental stage, only the type I genes displayed strong systemic induction. Ethylene was not responsible for any of the specific patterns of expression. R collected from different tobacco feeding insects, M. sexta,Manduca quinquemaculata, and Heliothis virescens, as well as from different instars of M. sexta were equally active. The active components of M. sexta R were heat stable and active in minute amounts, comparable with real transfer rates during larval feeding. Specific expression patterns may indicate that the plant is adjusting its wound response to efficiently fend off M. sexta, but may also be advantageous to the larvae, especially when R suppress wound-induced plant responses.
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Base Score Contribution
0.691
From this paper's citation signal
Citation Network Contribution
2.5
From 51 citing papers with measurable signal
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DataRank blends this paper's own citation count with the influence of the papers that cite it. Here, roughly 22% comes from its base citations and 78% from the citation network (51 citing papers contributed measurable signal).
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