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@ARTICLE{Genzel:892793,
author = {Genzel, Franziska and Dicke, Max Daniel and Junker-Frohn,
Laura Verena and Neuwohner, Andrea and Thiele, Björn and
Putz, Alexander and Usadel, Björn and Wormit, Alexandra and
Wiese-Klinkenberg, Anika},
title = {{I}mpact of {M}oderate {C}old and {S}alt {S}tress on the
{A}ccumulation of {A}ntioxidant {F}lavonoids in the {L}eaves
of {T}wo {C}apsicum {C}ultivars},
journal = {Journal of agricultural and food chemistry},
volume = {69},
number = {23},
issn = {0021-8561},
address = {Washington, DC [u.a.]},
reportid = {FZJ-2021-02350},
pages = {6431–6443},
year = {2021},
abstract = {The horticultural production of bell peppers generates
large quantities of residual biomass. Abiotic stress
stimulates the production of protective flavonoids, so the
deliberate application of stress to the plants after fruit
harvest could provide a strategy to valorize horticultural
residuals by increasing flavonoid concentrations,
facilitating their industrial extraction. Here we exposed
two Capsicum cultivars, a chilli and a bell pepper, to cold
and salt stress and combinations thereof to determine their
valorization potential. Noninvasive image-based phenotyping
and multiparametric fluorescence measurements indicated that
all stress treatments inhibited plant growth and reduced the
leaf chlorophyll fluorescence index, with the chilli
cultivar showing greater sensitivity. The fluorescence-based
FLAV index allowed the noninvasive assessment of foliar
luteolin glycosides. High-performance liquid
chromatography–mass spectrometry (HPLC-MS) analysis showed
that moderate cold increased the levels of two foliar
antioxidant luteolin glycosides in both cultivars, with bell
pepper containing the highest amounts (induced to maximum
5.5 mg g–1 DW cynaroside and 37.0 mg g–1 DW
graveobioside A) after combined stress treatment. These data
confirm the potential of abiotic stress for the valorization
of residual leaf biomass to enhance the industrial
extraction of antioxidant and bioactive flavonoids.},
cin = {IBG-2 / IBG-4},
ddc = {540},
cid = {I:(DE-Juel1)IBG-2-20101118 / I:(DE-Juel1)IBG-4-20200403},
pnm = {217 - Für eine nachhaltige Bio-Ökonomie – von
Ressourcen zu Produkten (POF4-217)},
pid = {G:(DE-HGF)POF4-217},
typ = {PUB:(DE-HGF)16},
pubmed = {34081868},
UT = {WOS:000664302800005},
doi = {10.1021/acs.jafc.1c00908},
url = {https://juser.fz-juelich.de/record/892793},
}