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@ARTICLE{Suresh:916375,
author = {Suresh, Kiran and Zeisler-Diehl, Viktoria V. and
Wojciechowski, Tobias and Schreiber, Lukas},
title = {{C}omparing anatomy, chemical composition, and water
permeability of suberized organs in five plant species: wax
makes the difference},
journal = {Planta},
volume = {256},
number = {3},
issn = {0032-0935},
address = {Heidelberg},
publisher = {Springer},
reportid = {FZJ-2022-06175},
pages = {60},
year = {2022},
abstract = {AbstractMain conclusion The efficiency of suberized
plant/environment interfaces as transpiration barriers is
not established by the suberin polymer but by the wax
molecules sorbed to the suberin polymer.Abstract Suberized
cell walls formed as barriers at the plant/soil or
plant/atmosphere interface in various plant organs
(soil-grown roots, aerial roots, tubers, and bark) were
enzymatically isolated from five different plant species
(Clivia miniata, Monstera deliciosa, Solanum tuberosum,
Manihot esculenta, and Malus domestica). Anatomy, chemical
composition and efficiency as transpiration barriers (water
loss in m s −1 ) of the different suberized cell wall
samples were quantified.Results clearly indicated that there
was no correlation between barrier properties of the
suberized interfaces and the number of suberized cell
layers, the amount of soluble wax and the amounts of
suberin. Suberized interfaces of C. miniata roots, M.
esculenta roots, and M. domestica bark periderms formed poor
or hardly any transpiration barrier. Permeances
varyingbetween 1.1 and 5.1 × 10 −8 ms −1 were very
close to the permeance of water (7.4 × 10 −8 ms −1 )
evaporating from a water/ atmosphere interface. Suberized
interfaces of aerial roots of M. deliciosa and tubers of S.
tuberosum formed reasonable transpiration barriers with
permeances varying between 7.4 × 10 −10 and 4.2 × 10
−9 m s −1 , which were similar to the upperrange of
permeances measured with isolated cuticles (about 10 −9 ms
−1 ). Upon wax extraction, permeances of M. deliciosa and
S. tuberosum increased nearly tenfold, which proves the
importance of wax establishing a transpiration barrier.
Finally,highly opposite results obtained with M. esculenta
and S. tuberosum periderms are discussed in relation to
their agronomicalimportance for postharvest losses and tuber
storage.Keywords Bark · Diffusion barrier · Periderm ·
Suberization · Storage root · Transpiration · Tuber ·
Water loss · Wax},
cin = {IBG-2},
ddc = {580},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {2171 - Biological and environmental resources for
sustainable use (POF4-217)},
pid = {G:(DE-HGF)POF4-2171},
typ = {PUB:(DE-HGF)16},
pubmed = {35988126},
UT = {WOS:000842406700001},
doi = {10.1007/s00425-022-03975-3},
url = {https://juser.fz-juelich.de/record/916375},
}