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@ARTICLE{Walter:51536,
author = {Walter, A. and Spies, H. and Terjung, S. and Kuesters, R.
and Kirchgeßner, N. and Schurr, U.},
title = {{S}patio-temporal dynamics of expansion growth in roots :
automatic quantification of diurnal course and temperature
response by digital image sequence processing},
journal = {The journal of experimental botany},
volume = {53},
issn = {0022-0957},
address = {Oxford},
publisher = {Univ. Press},
reportid = {PreJuSER-51536},
pages = {689 - 698},
year = {2002},
note = {Record converted from VDB: 12.11.2012},
abstract = {A newly developed technique based on image sequence
analysis allows automatic and precise quantification of the
dynamics of the growth velocity of the root tip, the
distribution of expansion growth rates along the entire
growth zone and the oscillation frequencies of the root tip
during growth without the need of artificial landmarks.
These three major parameters characterizing expansion growth
of primary roots can be analysed over several days with high
spatial (20 mum) and temporal resolution (several minutes)
as the camera follows the growing root by an
image-controlled root tracking device. In combination with a
rhizotron set up for hydroponic plant cultivation the impact
of rapid changes of environmental factors can be assessed.
First applications of this new system proved the absence of
diurnal variation of root growth in Zea mays under constant
temperature conditions. The distribution profile of relative
elemental growth rate (REGR) showed two maxima under
constant and varying growth conditions. Lateral oscillatory
movements of growing root tips were present even under
constant environmental conditions. Dynamic changes in
velocity- and REGR-distribution within 1 h could be
quantified after a step change in temperature from 21
degreesC to 26 degreesC. Most prominent growth responses
were found in the zone of maximal root elongation.},
keywords = {J (WoSType)},
cin = {ICG-III},
ddc = {580},
cid = {I:(DE-Juel1)VDB49},
pnm = {Chemie und Dynamik der Geo-Biosphäre},
pid = {G:(DE-Juel1)FUEK257},
shelfmark = {Plant Sciences},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000174400400013},
doi = {10.1093/jexbot/53.369.689},
url = {https://juser.fz-juelich.de/record/51536},
}