L773:1040 4651
Sökning: L773:1040 4651 > Analysis of the Dev...
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 03441naa a2200349 4500 | |
| 001 | oai:slubar.slu.se:45606 | |
| 003 | SwePub | |
| 008 | 240410s2012 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://res.slu.se/id/publ/456062 URI |
| 024 | 7 | a https://doi.org/10.1105/tpc.111.0951092 DOI |
| 040 | a (SwePub)slu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Benlloch, Reyesu Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig genetik och växtfysiologi,Department of Forest Genetics and Plant Physiology4 aut0 (Swepub:slu)52143 |
| 245 | 1 0 | a Analysis of the Developmental Roles of the Arabidopsis Gibberellin 20-Oxidases Demonstrates That GA20ox1, -2, and -3 Are the Dominant Paralogs |
| 264 | c 2012-03-16 | |
| 264 | 1 | b Oxford University Press (OUP),c 2012 |
| 264 | 1 | b American Society of Plant Biologists,c 2024 |
| 520 | a Gibberellin (GA) biosynthesis is necessary for normal plant development, with later GA biosynthetic stages being governed by multigene families. Arabidopsis thaliana contains five GA 20-oxidase (GA20ox) genes, and past work has demonstrated the importance of GA20ox1 and -2 for growth and fertility. Here, we show through systematic mutant analysis that GA20ox1, -2, and -3 are the dominant paralogs; their absence results in severe dwarfism and almost complete loss of fertility. In vitro analysis revealed that GA20ox4 has full GA20ox activity, but GA20ox5 catalyzes only the first two reactions of the sequence by which GA(12) is converted to GA(9). GA20ox3 functions almost entirely redundantly with GA20ox1 and -2 at most developmental stages, including the floral transition, while GA20ox4 and -5 have very minor roles. These results are supported by analysis of the gene expression patterns in promoter:beta-glucuronidase reporter lines. We demonstrate that fertility is highly sensitive to GA concentration, that GA20ox1, -2, and -3 have significant effects on floral organ growth and anther development, and that both GA deficiency and overdose impact on fertility. Loss of GA20ox activity causes anther developmental arrest, with the tapetum failing to degrade. Some phenotypic recovery of late flowers in GA-deficient mutants, including ga1-3, indicated the involvement of non-GA pathways in floral development. | |
| 650 | 7 | a NATURVETENSKAPx Biologix Cellbiologi0 (SwePub)106042 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Biological Sciencesx Cell Biology0 (SwePub)106042 hsv//eng |
| 650 | 7 | a NATURVETENSKAPx Biologix Biokemi och molekylärbiologi0 (SwePub)106022 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Biological Sciencesx Biochemistry and Molecular Biology0 (SwePub)106022 hsv//eng |
| 700 | 1 | a Nilsson, Oveu Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig genetik och växtfysiologi,Department of Forest Genetics and Plant Physiology4 aut0 (Swepub:slu)48511 |
| 710 | 2 | a Sveriges lantbruksuniversitetb Institutionen för skoglig genetik och växtfysiologi4 org |
| 710 | 2 | a Sveriges lantbruksuniversitet |
| 773 | 0 | t Plant Celld : Oxford University Press (OUP)g 24, s. 941-960q 24<941-960x 1040-4651x 1532-298X |
| 856 | 4 | u http://www.plantcell.org/content/plantcell/24/3/941.full.pdf |
| 856 | 4 8 | u https://res.slu.se/id/publ/45606 |
| 856 | 4 8 | u https://doi.org/10.1105/tpc.111.095109 |
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