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MALDI-TOF MS Analysis of Proanthocyanidins in Two Lowland Tropical Forest Species of Cecropia: A First Look at Their Chemical Structures
The structural chemistry of proanthocyanidin molecules has been investigated in temperate zone plants, but few studies have been done with plants of the Amazonian lowland tropical wet forests where herbivore pressure is more extensive and diverse. Using MALDI-TOF mass spectrometry, we report unique...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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MDPI
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6271936/ https://www.ncbi.nlm.nih.gov/pubmed/25221870 http://dx.doi.org/10.3390/molecules190914484 |
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author | Huynh, Alex Van Bevington, John M. |
author_facet | Huynh, Alex Van Bevington, John M. |
author_sort | Huynh, Alex Van |
collection | PubMed |
description | The structural chemistry of proanthocyanidin molecules has been investigated in temperate zone plants, but few studies have been done with plants of the Amazonian lowland tropical wet forests where herbivore pressure is more extensive and diverse. Using MALDI-TOF mass spectrometry, we report unique properties of the proanthocyanidin structural chemistry in two neotropical Cecropia species, C. polystachya, a myrmecophyte with mutualistic ants, and C. sciadophylla, a non-myrmecophyte lacking mutualistic ants. Our preliminary data suggests the presence of reportedly uncommon propelargonidin subunits in a majority of proanthocyanidin oligomers. The presence of 3-O-gallate proanthocyanidin monomers was also detected in the mass spectra of both species. Unlike other studies that have examined species growing at higher latitudes, oligomers composed of procyanidin, propelargonidin, and their 3-O-gallates were present in both Cecropia species while the presence of oligomers containing prodelphinidin units were absent or at lower levels. These distinctive features may suggest that proanthocyanidins in some tropical plant species may be an untapped source of proanthocyanidin structural complexity that warrants further investigation. Several differences between spectra of the two Cecropia species could also point to the presence of anti-herbivore defense tradeoffs between chemical defense quality and biotic defense between the two species. |
format | Online Article Text |
id | pubmed-6271936 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-62719362018-12-27 MALDI-TOF MS Analysis of Proanthocyanidins in Two Lowland Tropical Forest Species of Cecropia: A First Look at Their Chemical Structures Huynh, Alex Van Bevington, John M. Molecules Communication The structural chemistry of proanthocyanidin molecules has been investigated in temperate zone plants, but few studies have been done with plants of the Amazonian lowland tropical wet forests where herbivore pressure is more extensive and diverse. Using MALDI-TOF mass spectrometry, we report unique properties of the proanthocyanidin structural chemistry in two neotropical Cecropia species, C. polystachya, a myrmecophyte with mutualistic ants, and C. sciadophylla, a non-myrmecophyte lacking mutualistic ants. Our preliminary data suggests the presence of reportedly uncommon propelargonidin subunits in a majority of proanthocyanidin oligomers. The presence of 3-O-gallate proanthocyanidin monomers was also detected in the mass spectra of both species. Unlike other studies that have examined species growing at higher latitudes, oligomers composed of procyanidin, propelargonidin, and their 3-O-gallates were present in both Cecropia species while the presence of oligomers containing prodelphinidin units were absent or at lower levels. These distinctive features may suggest that proanthocyanidins in some tropical plant species may be an untapped source of proanthocyanidin structural complexity that warrants further investigation. Several differences between spectra of the two Cecropia species could also point to the presence of anti-herbivore defense tradeoffs between chemical defense quality and biotic defense between the two species. MDPI 2014-09-12 /pmc/articles/PMC6271936/ /pubmed/25221870 http://dx.doi.org/10.3390/molecules190914484 Text en © 2014 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Communication Huynh, Alex Van Bevington, John M. MALDI-TOF MS Analysis of Proanthocyanidins in Two Lowland Tropical Forest Species of Cecropia: A First Look at Their Chemical Structures |
title | MALDI-TOF MS Analysis of Proanthocyanidins in Two Lowland Tropical Forest Species of Cecropia: A First Look at Their Chemical Structures |
title_full | MALDI-TOF MS Analysis of Proanthocyanidins in Two Lowland Tropical Forest Species of Cecropia: A First Look at Their Chemical Structures |
title_fullStr | MALDI-TOF MS Analysis of Proanthocyanidins in Two Lowland Tropical Forest Species of Cecropia: A First Look at Their Chemical Structures |
title_full_unstemmed | MALDI-TOF MS Analysis of Proanthocyanidins in Two Lowland Tropical Forest Species of Cecropia: A First Look at Their Chemical Structures |
title_short | MALDI-TOF MS Analysis of Proanthocyanidins in Two Lowland Tropical Forest Species of Cecropia: A First Look at Their Chemical Structures |
title_sort | maldi-tof ms analysis of proanthocyanidins in two lowland tropical forest species of cecropia: a first look at their chemical structures |
topic | Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6271936/ https://www.ncbi.nlm.nih.gov/pubmed/25221870 http://dx.doi.org/10.3390/molecules190914484 |
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