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Sökning: onr:"swepub:oai:DiVA.org:umu-23573" > UDP-glucose pyropho...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00004228naa a2200481 4500
001oai:DiVA.org:umu-23573
003SwePub
008090625s2009 | |||||||||||000 ||eng|
009oai:slubar.slu.se:49950
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-235732 URI
0247 a https://doi.org/10.1093/pcp/pcp0522 DOI
0247 a https://res.slu.se/id/publ/499502 URI
040 a (SwePub)umud (SwePub)slu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Meng, Mengu Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)4 aut0 (Swepub:umu)meme0001
2451 0a UDP-glucose pyrophosphorylase is not rate limiting, but is essential in arabidopsis
264 c 2009-04-13
264 1a Kyoto :b Japanese society of plant physiologists,c 2009
338 a print2 rdacarrier
520 a UDP-glucose pyrophosphorylase (UGPase) produces UDP-glucose which is essential for sucrose and polysaccharide synthesis. Using Arabidopsis, we demonstrated that two UGPase genes (UGP1 and UGP2) are differentially expressed in a variety of organs, with UGP1 being pre-dominant. Co-expression analyses of UGP genes suggest that UGP1 is closely co-regulated with carbohydrate metabolism genes, late embryogenesis and seed loading, while UGP2 is co-regulated with stress response genes, fertilized flowers and photosynthetic genes. We have used Arabidopsis mutants for the UGP genes to characterize the role of both genes. The UGPase activity/protein was reduced by 70, 10 and 85% in ugp1, ugp2 and ugp1/ugp2 double mutant (DK) plants, respectively. A decrease in UGPase activity/protein was accompanied by an increase in expression of USP, a gene for UDP-sugar pyrophos-phorylase, suggesting a compensatory mechanism. Generally, the mutants had no effects on soluble sugar/starch content (except in certain cases for DK plants), and there were no differences in cell wall composition/content between the wild type and the mutants. On the other hand, DK plants had greater hypocotyl and root lengths. When grown in the field, the mutants had as much as a 50% decrease in the number of seeds produced (consistent with a substantial decrease in field fitness), suggesting that they would be outcompeted in the field in a few generations. Overall, the data suggest that UGPase is not rate limiting for sucrose/starch and cell wall synthesis, but that it is essential in Arabidopsis.
650 7a LANTBRUKSVETENSKAPERx Lantbruksvetenskap, skogsbruk och fiskex Skogsvetenskap0 (SwePub)401042 hsv//swe
650 7a AGRICULTURAL SCIENCESx Agriculture, Forestry and Fisheriesx Forest Science0 (SwePub)401042 hsv//eng
653 a Callose
653 a Cellulose
653 a Cell wall synthesis
653 a Seed fitness
653 a Sucrose synthesis
7001 a Geisler, Mattu Department of Plant Biology, Southern Illinois University4 aut
7001 a Johansson, Henriku Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)4 aut
7001 a Harholt, Jesperu Department of Plant Physiology, University of Copenhagen4 aut
7001 a Scheller, Henrik V.u Department of Plant Physiology, University of Copenhagen,4 aut
7001 a Mellerowicz, Ewau Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig genetik och växtfysiologi,Department of Forest Genetics and Plant Physiology4 aut0 (Swepub:slu)47207
7001 a Kleczkowski, Leszek A.u Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)4 aut0 (Swepub:umu)lekl0001
7102 a Umeå universitetb Institutionen för fysiologisk botanik4 org
7102 a Sveriges lantbruksuniversitet
7730 t Plant and Cell Physiologyd Kyoto : Japanese society of plant physiologistsg 50:5, s. 998-1011q 50:5<998-1011x 0032-0781x 1471-9053
8564 u https://academic.oup.com/pcp/article-pdf/50/5/998/5206702/pcp052.pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-23573
8564 8u https://doi.org/10.1093/pcp/pcp052
8564 8u https://res.slu.se/id/publ/49950

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