This title appears in the Scientific Report :
2007
Please use the identifier:
http://dx.doi.org/10.1111/j.1469-8137.2007.02053.x in citations.
Spatio-temporal leaf growth patterns of Arabidopsis thaliana and evidence for sugar control of the diel leaf growth cycle
Spatio-temporal leaf growth patterns of Arabidopsis thaliana and evidence for sugar control of the diel leaf growth cycle
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 di...
Saved in:
Personal Name(s): | Wiese, A. |
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Christ, M. M. / Virnich, O. / Schurr, U. / Walter, A. | |
Contributing Institute: |
Phytosphäre; ICG-3 JARA-ENERGY; JARA-ENERGY |
Published in: | The @new phytologist, 174 (2007) S. 752 - 761 |
Imprint: |
Oxford [u.a.]
Wiley-Blackwell
2007
|
Physical Description: |
752 - 761 |
DOI: |
10.1111/j.1469-8137.2007.02053.x |
PubMed ID: |
17504459 |
Document Type: |
Journal Article |
Research Program: |
Terrestrische Umwelt |
Series Title: |
New Phytologist
174 |
Subject (ZB): | |
Publikationsportal JuSER |
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. |