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@ARTICLE{Vandoorne:111950,
author = {Vandoorne, B. and Mathieu, A.S. and Van den Ende, W. and
Vergauwen, R. and Perilleux, C. and Javaux, M. and Lutts,
S.},
title = {{W}ater stress drastically reduces root growth and inulin
yield in {C}ichorium intybus (var. sativum) independently of
photosynthesis},
journal = {The journal of experimental botany},
volume = {63},
issn = {0022-0957},
address = {Oxford},
publisher = {Univ. Press},
reportid = {PreJuSER-111950},
pages = {4359 - 4373},
year = {2012},
note = {This work was supported by the Region Wallonne (DGTRE) of
Belgium through the subventions D31-1062, D31-1123, and
D31-1175 and by the Fonds National de la Recherche
Scientifique (FNRS; convention no. 1.5.111.10F). The authors
are also very grateful to FNRS for the PhD research grant of
BV (Aspirant FNRS) and to B. Van Pee, B. Capelle, and H.
Dailly (CARI-UCL) for their valuable technical assistance.},
abstract = {Root chicory (Cichorium intybus var. sativum) is a cash
crop cultivated for inulin production in Western Europe.
This plant can be exposed to severe water stress during the
last 3 months of its 6-month growing period. The aim of this
study was to quantify the effect of a progressive decline in
water availability on plant growth, photosynthesis, and
sugar metabolism and to determine its impact on inulin
production. Water stress drastically decreased fresh and dry
root weight, leaf number, total leaf area, and stomatal
conductance. Stressed plants, however, increased their
water-use efficiency and leaf soluble sugar concentration,
decreased the shoot-to-root ratio and lowered their osmotic
potential. Despite a decrease in photosynthetic pigments,
the photosynthesis light phase remained unaffected under
water stress. Water stress increased sucrose phosphate
synthase activity in the leaves but not in the roots. Water
stress inhibited sucrose:sucrose 1-fructosyltransferase and
fructan:fructan 1 fructosyltransferase after 19 weeks of
culture and slightly increased fructan 1-exohydrolase
activity. The root inulin concentration, expressed on a
dry-weight basis, and the mean degree of polymerization of
the inulin chain remained unaffected by water stress. Root
chicory displayed resistance to water stress, but that
resistance was obtained at the expense of growth, which in
turn led to a significant decrease in inulin production.},
keywords = {J (WoSType)},
cin = {IBG-3},
ddc = {580},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {Terrestrische Umwelt},
pid = {G:(DE-Juel1)FUEK407},
shelfmark = {Plant Sciences},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:22577185},
pmc = {pmc:PMC3421980},
UT = {WOS:000307821100005},
doi = {10.1093/jxb/ers095},
url = {https://juser.fz-juelich.de/record/111950},
}