New Data on the Presence of Hemocyanin in Plecoptera: Recomposing a Puzzle

The specific role of hemocyanin in Plecoptera (stoneflies) is still not completely understood, since none of the hypotheses advanced have proven fully convincing. Previous data show that mRNA hemocyanin sequences are not present in all Plecoptera, and that hemocyanin does not seem to be uniformly di...

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Veröffentlicht in:Journal of insect science (Tucson, Ariz.) Ariz.), 2011, Vol.11 (153), p.1-20
Hauptverfasser: Amore, Valentina, Gaetani, Brunella, Angeles Puig, Maria, Fochetti, Romolo
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container_issue 153
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container_title Journal of insect science (Tucson, Ariz.)
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creator Amore, Valentina
Gaetani, Brunella
Angeles Puig, Maria
Fochetti, Romolo
description The specific role of hemocyanin in Plecoptera (stoneflies) is still not completely understood, since none of the hypotheses advanced have proven fully convincing. Previous data show that mRNA hemocyanin sequences are not present in all Plecoptera, and that hemocyanin does not seem to be uniformly distributed within the order. All species possess hexamerins, which are multifunction proteins that probably originated from hemocyanin. In order to obtain an increasingly detailed picture on the presence and distribution of hemocyanin across the order, this study presents new data regarding nymphs and adults of selected Plecoptera species. Results confirm that the hemocyanin expression differs among nymphs in the studied stonefly species. Even though previous studies have found hemocyanin in adults of two stonefly species it was not detected in the present study, even in species where nymphs show hemocyanin, suggesting that the physiological need of this protein can change during life cycle. The phylogenetic pattern obtained using hemocyanin sequences matches the accepted scheme of traditional phylogeny based on morphology, anatomy, and biology. It is remarkable to note that the hemocyanin conserved region acts like a phylogenetic molecular marker within Plecoptera.
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Previous data show that mRNA hemocyanin sequences are not present in all Plecoptera, and that hemocyanin does not seem to be uniformly distributed within the order. All species possess hexamerins, which are multifunction proteins that probably originated from hemocyanin. In order to obtain an increasingly detailed picture on the presence and distribution of hemocyanin across the order, this study presents new data regarding nymphs and adults of selected Plecoptera species. Results confirm that the hemocyanin expression differs among nymphs in the studied stonefly species. Even though previous studies have found hemocyanin in adults of two stonefly species it was not detected in the present study, even in species where nymphs show hemocyanin, suggesting that the physiological need of this protein can change during life cycle. The phylogenetic pattern obtained using hemocyanin sequences matches the accepted scheme of traditional phylogeny based on morphology, anatomy, and biology. 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subjects Amino Acid Sequence
Animal genetics
Animals
cDNA
Genetic aspects
Health aspects
Hemocyanins - genetics
Hemocyanins - metabolism
Insecta - genetics
Insecta - metabolism
Messenger RNA
Metalloproteins
Molecular Sequence Data
Nymph - metabolism
phylogeny
Physiological aspects
Plecoptera
respiratory proteins
RNA sequencing
Sequence Analysis, DNA
Stone-flies
stoneflies
title New Data on the Presence of Hemocyanin in Plecoptera: Recomposing a Puzzle
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