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000033514 084__ $$2WoS$$aPlant Sciences
000033514 1001_ $$0P:(DE-Juel1)VDB2595$$aWalter, A.$$b0$$uFZJ
000033514 245__ $$aExpansion kinematics are an intrinsic property of leaf development and are scaled from cell to leaf level at different nutrient availabilities
000033514 260__ $$aOxford [u.a.] :Wiley- Blackwell$$bWiley-Blackwell - STM$$c2003
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000033514 440_0 $$010981$$aPlant Biology$$v5$$x1435-8603$$y6
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000033514 520__ $$aLeaves of Nicotiana tobacum L. and Ricinus communis L. develop with a wide range of different final sizes due to leaf position and nutrient availability. The aim of this study was to investigate, on different organizational levels of leaf growth, which parameters are affected by external nutrient availability and which parameters are not affected and might thus be intrinsic, general patterns of growth that govern plant architecture. We found that leaf size and final cell size was larger with higher external nutrient availability, and that hexose concentrations in N. tabacum were lower with higher nutrient availability. Despite these differences, several dynamic parameters of leaf development were not affected by the nutrient treatment. Leaves of all sizes within a species exhibited the same relationship between relative leaf growth rate and relative leaf area (RLA), which is defined as the ratio of momentary and final leaf area. External nutrient availability did not affect chlorophyll concentration per parenchyma cell, which increased linearly with leaf development. Leaves of identical RLA exhibited identical cell density patterns within their interveinal tissue layers. This indicates a close connection between the kinematics of cell expansion and RLA and, hence, reveals that kinematics are an intrinsic property of growing leaves that can be scaled from the cell to the leaf level.
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000033514 65320 $$2Author$$adevelopmental index
000033514 65320 $$2Author$$aleaf growth
000033514 65320 $$2Author$$anicotiana tabacum
000033514 65320 $$2Author$$anutrient availability
000033514 65320 $$2Author$$apattern formation
000033514 65320 $$2Author$$aricinus communis
000033514 7001_ $$0P:(DE-HGF)0$$aRoggatz, U.$$b1
000033514 7001_ $$0P:(DE-Juel1)129402$$aSchurr, U.$$b2$$uFZJ
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