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@ARTICLE{Grimm:866259,
author = {Grimm, Eckhard and Hahn, Jan and Pflugfelder, Daniel and
Schmidt, Moritz Jonathan and van Dusschoten, Dagmar and
Knoche, Moritz},
title = {{L}ocalized bursting of mesocarp cells triggers
catastrophic fruit cracking},
journal = {Horticulture research},
volume = {6},
number = {1},
issn = {2052-7276},
address = {London},
publisher = {Nature Publ. Group},
reportid = {FZJ-2019-05425},
pages = {79},
year = {2019},
abstract = {The so-called rain-cracking of sweet cherry fruit severely
threatens commercial production. Simple observation tells us
that cuticular microcracking (invisible) always precedes
skin macrocracking (visible). The objective here was to
investigate how a macrocrack develops. Incubating detached
sweet cherry fruit in deionized water induces microcracking.
Incubating fruit in D2O and concurrent magnetic resonance
imaging demonstrates that water penetration occurs only
(principally) through the microcracks, with nondetectable
amounts penetrating the intact cuticle. Optical coherence
tomography of detached, whole fruit incubated in deionized
water, allowed generation of virtual cross-sections through
the zone of a developing macrocrack. Outer mesocarp cell
volume increased before macrocracks developed but increased
at a markedly higher rate thereafter. Little change in
mesocarp cell volume occurred in a control zone distant from
the crack. As water incubation continued, the cell volume in
the crack zone decreased, indicating leaking/bursting of
individual mesocarp cells. As incubation continued still
longer, the crack propagated between cells both to form a
long, deep macrocrack. Outer mesocarp cell turgor did not
differ significantly before and after incubation between
fruit with or without macrocracks; nor between cells within
the crack zone and those in a control zone distant from the
macrocrack. The cumulative frequency distribution of the
log-transformed turgor pressure of a population of outer
mesocarp cells reveals all cell turgor data followed a
normal distribution. The results demonstrate that
microcracks develop into macrocracks following the volume
increase of a few outer mesocarp cells and is soon
accompanied by cell bursting.},
cin = {IBG-2},
ddc = {640},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {582 - Plant Science (POF3-582)},
pid = {G:(DE-HGF)POF3-582},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:31263563},
UT = {WOS:000472657000001},
doi = {10.1038/s41438-019-0161-3},
url = {https://juser.fz-juelich.de/record/866259},
}