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| Web URL(s): | http://www.plantphysiol.org/content/125/3/1517.full
Last checked: 03/11/2016
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Jensen, Christian S.;
Salchert, Klaus;
Nielsen, Klaus K. |
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| Author Affiliation: | Department of Plant Biology and Biogeochemistry, RISOE National Laboratory, Roskilde, Denmark |
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| Title: | A TERMINAL FLOWER1-like gene from perennial ryegrass involved in floral transition and axillary meristem identity |
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| Source: | Plant Physiology. Vol. 125, No. 3, March 2001, p. 1517-1528. |
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| Publishing Information: | Rockville, MD: American Society of Plant Physiologists |
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| # of Pages: | 12 |
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| Keywords: | TIC Keywords: Lolium perenne; Meristem; Genes; Flowering; Growth; Spikelets; Antagonism; Gene expression; Phenotypes; Genomes; DNA; Ribonucleic acid; Genetic transformation; Mutants
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| Abstract/Contents: | "Control of flowering and the regulation of plant architecture have been thoroughly investigated in a number of well-studied dicot plants such as Arabidopsis, Antirrhinum, and tobacco. However, in many important monocot seed crops, molecular information on plant reproduction is still limited. To investigate the regulation of meristem identity and the control of floral transition in perennial ryegrass (Lolium perenne) we isolated a ryegrass TERMINAL FLOWER1-like gene, LpTFL1, and characterized it for its function in ryegrass flower development. Perennial ryegrass requires a cold treatment of at least 12 weeks to induce flowering. During this period a decrease in LpTFL1 message was detected in the ryegrass apex. However, upon subsequent induction with elevated temperatures and long-day photoperiods.LpTFL1 mesage levels increased and reached a maximum when the ryegrass apex has formed visible spikelets. Arabidopsis plants overpressing LpTFL1 were significantly delayed in flowering and exhibited dramatic changes in architecture such as extensive lateral branching, increased growth of all vegetative organs, and a highly increased trichome production. Furthermore, overexpression of LpTFL1 was able to complement the phenotype of the severe tfl1-14 mutant of Arabidopsis. Analsysis of the LpTFL1 promoter fused to the UidA gene in Arabidopsis revealed that the promoter is active in axillary meristems, but not the apical meristem. Therefore, we suggest the LpTFL1 is repressor of flowering and a controler of axillary meritstem identity in ryegrass." |
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| Language: | English |
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| References: | 40 |
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| Note: | Pictures, color & b/w
Figures |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Jensen, C. S., K. Salchert, and K. K. Nielsen. 2001. A TERMINAL FLOWER1-like gene from perennial ryegrass involved in floral transition and axillary meristem identity. Plant Physiol. 125(3):p. 1517-1528. |
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| Web URL(s):
http://www.plantphysiol.org/content/125/3/1517.full
Last checked: 03/11/2016
Access conditions: Item is within a limited-access website |
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MSU catalog number: QK 1 .P68 |
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