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| Web URL(s): | http://www.plantphysiol.org/cgi/content/full/124/2/845?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&searchid=1&FIRSTINDEX=0&sortspec=relevance&volume=124&firstpage=845&resourcetype=HWCIT
Last checked: 06/2000
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Fiorani, Fabio;
Beemster, Gerrit T. S.;
Bultynck, Lieve;
Lambers, Hans |
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| Author Affiliation: | Beemster: Laboratorium voor Genetica, Departement Plantengenetica, Vlaams Instituut voor Biotechnologie, Universiteit Gent, Gent, Belgium; Bultynck and Lambers: Plant Sciences, Faculty of Agriculture, University of Western Australia, Nedlands, Western Australia, Australia; Fiorani, Bultynck, and Lambers: Plant Ecophysiology, Utrecht University, Ultrecht, The Netherlands |
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| Title: | Can meristematic activity determine variation in leaf size and elongation rate among four Poa species? A kinematic study |
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| Section: | Whole plant and ecophysiology
Other records with the "Whole plant and ecophysiology" Section
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| Source: | Plant Physiology. Vol. 124, No. 2, October 2000, p. 845-855. |
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| Publishing Information: | Rockville, MD: American Society of Plant Physiologists |
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| # of Pages: | 11 |
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| Keywords: | TIC Keywords: Meristem; Poa; Leaves; Vertical shoot growth; Poa alpina; Poa compressa; Poa annua; Poa trivialis; Cells; Shoot growth; Mathematical equations; Stem elongation; Leaf area; Cell division; Growth rate; Comparisons; Leaf blade length
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| Abstract/Contents: | "We studied inherent variation in final leaf size among four Poa spp. that live at different elevations. The average final length of leaf 7 of the main stem of the smallest species (Poa alpina) was only one-half that of the largest species (Poa trivialis); it was correlated with leaf elongation rate, but not with the duration of leaf elongation. A faster rate of leaf elongation rate was associated with (a) larger size of the zone of cell expansion, and (b) faster rates of cell production (per cell file) in the meristem, which in turn were due to greater numbers of dividing cells, whereas average cell division rates were very similar for all species (except Poa annua). Also we found that the proliferative fraction equaled 1 throughout the meristem in all species. It was remarkable that rates of cell expansion tended to be somewhat higher in the species with slower growing leaves. We discuss the results by comparing the spatial and material viewpoints, which lead to different interpretations of the role of cell division. Although the presented data do not strictly prove it, they strongly suggest a regulatory role for cell division in determining differences in growth rate among the present four Poa spp." |
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| Language: | English |
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| References: | 45 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fiorani, F., G. T. S. Beemster, L. Bultynck, and H. Lambers. 2000. Can meristematic activity determine variation in leaf size and elongation rate among four Poa species? A kinematic study. Plant Physiol. 124(2):p. 845-855. |
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| Web URL(s):
http://www.plantphysiol.org/cgi/content/full/124/2/845?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&searchid=1&FIRSTINDEX=0&sortspec=relevance&volume=124&firstpage=845&resourcetype=HWCIT
Last checked: 06/2000
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: QK 1 .P68 |
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