Elucidating Phytochemical Production in Juniperus sp.: Seasonality and Response to Stress Situations

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Phenolic-enriched extracts from Portuguese junipers were described as potential neuroprotective natural products. However, evaluation of plants for pharma/nutraceutical industry is based on secondary metabolite content, which is influenced by the environmental conditions. Therefore, it became important to elucidate the metabolic response of the junipers to seasonality and to stress conditions with regard to polyphenol production. Seasonal conditions modulated total phenolic and flavonoids contents of the four juniper species. Higher levels of phytochemicals were obtained when plants were not actively growing. However, only a few differences were registered in the relative contents of psydrin and a procyanidin dimer, according to species. Salt stress and methyl jasmonate elicitation promote different responses within the species. They were effective in enhancing phenolic accumulation, with just a few alterations in the relative contents of procyanidins, epicatechin, and quercetin derivatives. These differences were also reflected in gene expression of important enzymes from biosynthetic pathways.
Original languageUnknown
Pages (from-to)4044-4052
JournalJournal of Agricultural and Food Chemistry
Volume61
Issue number17
DOIs
Publication statusPublished - 1 Jan 2013

Cite this

@article{8cd877f3ecd442349a0b68d5edbe0fa7,
title = "Elucidating Phytochemical Production in Juniperus sp.: Seasonality and Response to Stress Situations",
abstract = "Phenolic-enriched extracts from Portuguese junipers were described as potential neuroprotective natural products. However, evaluation of plants for pharma/nutraceutical industry is based on secondary metabolite content, which is influenced by the environmental conditions. Therefore, it became important to elucidate the metabolic response of the junipers to seasonality and to stress conditions with regard to polyphenol production. Seasonal conditions modulated total phenolic and flavonoids contents of the four juniper species. Higher levels of phytochemicals were obtained when plants were not actively growing. However, only a few differences were registered in the relative contents of psydrin and a procyanidin dimer, according to species. Salt stress and methyl jasmonate elicitation promote different responses within the species. They were effective in enhancing phenolic accumulation, with just a few alterations in the relative contents of procyanidins, epicatechin, and quercetin derivatives. These differences were also reflected in gene expression of important enzymes from biosynthetic pathways.",
keywords = "phenolic content, salinity, season variability, methyl jasmonate, polyphenols biosynthesis",
author = "Ricardo Boavida and Santos, {Maria Claudia}",
year = "2013",
month = "1",
day = "1",
doi = "10.1021/jf304752q",
language = "Unknown",
volume = "61",
pages = "4044--4052",
journal = "Journal of Agricultural and Food Chemistry",
issn = "0021-8561",
publisher = "The American Chemical Society",
number = "17",

}

TY - JOUR

T1 - Elucidating Phytochemical Production in Juniperus sp.: Seasonality and Response to Stress Situations

AU - Boavida, Ricardo

AU - Santos, Maria Claudia

PY - 2013/1/1

Y1 - 2013/1/1

N2 - Phenolic-enriched extracts from Portuguese junipers were described as potential neuroprotective natural products. However, evaluation of plants for pharma/nutraceutical industry is based on secondary metabolite content, which is influenced by the environmental conditions. Therefore, it became important to elucidate the metabolic response of the junipers to seasonality and to stress conditions with regard to polyphenol production. Seasonal conditions modulated total phenolic and flavonoids contents of the four juniper species. Higher levels of phytochemicals were obtained when plants were not actively growing. However, only a few differences were registered in the relative contents of psydrin and a procyanidin dimer, according to species. Salt stress and methyl jasmonate elicitation promote different responses within the species. They were effective in enhancing phenolic accumulation, with just a few alterations in the relative contents of procyanidins, epicatechin, and quercetin derivatives. These differences were also reflected in gene expression of important enzymes from biosynthetic pathways.

AB - Phenolic-enriched extracts from Portuguese junipers were described as potential neuroprotective natural products. However, evaluation of plants for pharma/nutraceutical industry is based on secondary metabolite content, which is influenced by the environmental conditions. Therefore, it became important to elucidate the metabolic response of the junipers to seasonality and to stress conditions with regard to polyphenol production. Seasonal conditions modulated total phenolic and flavonoids contents of the four juniper species. Higher levels of phytochemicals were obtained when plants were not actively growing. However, only a few differences were registered in the relative contents of psydrin and a procyanidin dimer, according to species. Salt stress and methyl jasmonate elicitation promote different responses within the species. They were effective in enhancing phenolic accumulation, with just a few alterations in the relative contents of procyanidins, epicatechin, and quercetin derivatives. These differences were also reflected in gene expression of important enzymes from biosynthetic pathways.

KW - phenolic content

KW - salinity

KW - season variability

KW - methyl jasmonate

KW - polyphenols biosynthesis

U2 - 10.1021/jf304752q

DO - 10.1021/jf304752q

M3 - Article

VL - 61

SP - 4044

EP - 4052

JO - Journal of Agricultural and Food Chemistry

JF - Journal of Agricultural and Food Chemistry

SN - 0021-8561

IS - 17

ER -