%0 Journal Article
%A Wiese, A.
%A Christ, M. M.
%A Virnich, O.
%A Schurr, U.
%A Walter, A.
%T Spatio-temporal leaf growth patterns of Arabidopsis thaliana and evidence for sugar control of the diel leaf growth cycle
%J The new phytologist
%V 174
%@ 0028-646X
%C Oxford [u.a.]
%I Wiley-Blackwell
%M PreJuSER-56255
%P 752 - 761
%D 2007
%Z Record converted from VDB: 12.11.2012
%X 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.
%K Arabidopsis: growth & development
%K Carbohydrates: physiology
%K Kinetics
%K Light
%K Monosaccharides: metabolism
%K Periodicity
%K Photosynthesis
%K Plant Leaves: growth & development
%K Carbohydrates (NLM Chemicals)
%K Monosaccharides (NLM Chemicals)
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:17504459
%U <Go to ISI:>//WOS:000246434500009
%R 10.1111/j.1469-8137.2007.02053.x
%U https://juser.fz-juelich.de/record/56255