Cytokinin regulation of auxin synthesis in Arabidopsis involves a homeostatic feedback loop regulated via auxin and cytokinin signal transduction.

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Fältnamn	Indikatorer	Metadata
000		04265naa a2200445 4500
001		oai:DiVA.org:umu-39396
003		SwePub
008		110126s2010 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
009		oai:slubar.slu.se:32003
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-393962 URI
024	7	a https://doi.org/10.1105/tpc.110.0748562 DOI
024	7	a https://res.slu.se/id/publ/320032 URI
040		a (SwePub)umud (SwePub)slu
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Jones, Brianu Umeå universitet,Umeå Plant Science Centre (UPSC)4 aut
245	1 0	a Cytokinin regulation of auxin synthesis in Arabidopsis involves a homeostatic feedback loop regulated via auxin and cytokinin signal transduction.
264		c 2010-09-07
264	1	b American Society of Plant Biologists,c 2010
338		a print2 rdacarrier
520		a Together, auxin and cytokinin regulate many of the processes that are critical to plant growth, development, and environmental responsiveness. We have previously shown that exogenous auxin regulates cytokinin biosynthesis in Arabidopsis thaliana. In this work, we show that, conversely, the application or induced ectopic biosynthesis of cytokinin leads to a rapid increase in auxin biosynthesis in young, developing root and shoot tissues. We also show that reducing endogenous cytokinin levels, either through the induction of CYTOKININ OXIDASE expression or the mutation of one or more of the cytokinin biosynthetic ISOPENTENYLTRANSFERASE genes leads to a reduction in auxin biosynthesis. Cytokinin modifies the abundance of transcripts for several putative auxin biosynthetic genes, suggesting a direct induction of auxin biosynthesis by cytokinin. Our data indicate that cytokinin is essential, not only to maintain basal levels of auxin biosynthesis in developing root and shoot tissues but also for the dynamic regulation of auxin biosynthesis in response to changing developmental or environmental conditions. In combination with our previous work, the data suggest that a homeostatic feedback regulatory loop involving both auxin and cytokinin signaling acts to maintain appropriate auxin and cytokinin concentrations in developing root and shoot tissues.
650	7	a LANTBRUKSVETENSKAPERx Lantbruksvetenskap, skogsbruk och fiskex Trädgårdsvetenskap/hortikultur0 (SwePub)401022 hsv//swe
650	7	a AGRICULTURAL SCIENCESx Agriculture, Forestry and Fisheriesx Horticulture0 (SwePub)401022 hsv//eng
700	1	a Petersson, Sarau Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig genetik och växtfysiologi,Department of Forest Genetics and Plant Physiology4 aut0 (Swepub:slu)50254
700	1	a Petersson, Sara V4 aut
700	1	a Tarkowski, Petr4 aut
700	1	a Graham, Neil4 aut
700	1	a May, Sean4 aut
700	1	a Dolezal, Karelu Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig genetik och växtfysiologi,Department of Forest Genetics and Plant Physiology4 aut0 (Swepub:slu)51671
700	1	a Sandberg, Göranu Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC),Institutionen för skoglig genetik och växtfysiologi,Department of Forest Genetics and Plant Physiology4 aut0 (Swepub:slu)51425
700	1	a Ljung, Karinu Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Umeå universitet,Umeå Plant Science Centre (UPSC),Institutionen för skoglig genetik och växtfysiologi,Department of Forest Genetics and Plant Physiology4 aut0 (Swepub:slu)48434
710	2	a Umeå universitetb Umeå Plant Science Centre (UPSC)4 org
710	2	a Sveriges lantbruksuniversitet
773	0	t The Plant Celld : American Society of Plant Biologistsg 22:9, s. 2956-2969q 22:9<2956-2969x 1040-4651x 1532-298X
856	4	u http://www.plantcell.org/content/plantcell/22/9/2956.full.pdf
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-39396
856	4 8	u https://doi.org/10.1105/tpc.110.074856
856	4 8	u https://res.slu.se/id/publ/32003

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Av författaren/redakt...: Jones, Brian; Petersson, Sara; Petersson, Sara ...; Tarkowski, Petr; Graham, Neil; May, Sean; visa fler...; Dolezal, Karel; Sandberg, Göran; Ljung, Karin; visa färre...

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