TY  - JOUR
AU  - Wiese, A.
AU  - Christ, M. M.
AU  - Virnich, O.
AU  - Schurr, U.
AU  - Walter, A.
TI  - Spatio-temporal leaf growth patterns of Arabidopsis thaliana and evidence for sugar control of the diel leaf growth cycle
JO  - The new phytologist
VL  - 174
SN  - 0028-646X
CY  - Oxford [u.a.]
PB  - Wiley-Blackwell
M1  - PreJuSER-56255
SP  - 752 - 761
PY  - 2007
N1  - Record converted from VDB: 12.11.2012
AB  - Leaf growth dynamics are driven by diel rhythms. The analysis of spatio-temporal leaf growth patterns in Arabidopsis thaliana wild type and mutants of interest is a promising approach to elucidate molecular mechanisms controlling growth. The diel availability of carbohydrates is thought to affect diel growth. A digital image sequence processing (DISP)-based noninvasive technique for visualizing and quantifying highly resolved spatio-temporal leaf growth was adapted for the model plant A. thaliana. Diel growth patterns were analysed for the wild type and for a mutant with altered diel carbohydrate metabolism. A. thaliana leaves showed highest relative growth rates (RGRs) at dawn and lowest RGRs at the beginning of the night. Along the lamina, a clear basipetal gradient of growth rate distribution was found, similar to that in many other dicotyledonous species. The starch-free 1 (stf1) mutant revealed changed temporal growth patterns with reduced nocturnal, and increased afternoon, growth activity. The established DISP technique is presented as a valuable tool to detect altered temporal growth patterns in A. thaliana mutants. Endogenous changes in the diel carbohydrate availability of the starch-free mutant clearly affected its diel growth rhythms.
KW  - Arabidopsis: growth & development
KW  - Carbohydrates: physiology
KW  - Kinetics
KW  - Light
KW  - Monosaccharides: metabolism
KW  - Periodicity
KW  - Photosynthesis
KW  - Plant Leaves: growth & development
KW  - Carbohydrates (NLM Chemicals)
KW  - Monosaccharides (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:17504459
UR  - <Go to ISI:>//WOS:000246434500009
DO  - DOI:10.1111/j.1469-8137.2007.02053.x
UR  - https://juser.fz-juelich.de/record/56255
ER  -