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# Article Title and Abstract Term Hit details Hit Valid?
1. Article [ 5880 ] (2000) [research_article] Multiple signaling pathways in gene expression during sugar starvation. Pharmacological analysis of din gene expression in suspension-cultured cells of arabidopsis.   (PDF)
PLANT PHYSIOLOGY
Fujiki, Y.,Ito, M.,Nishida, I.,Watanabe, A.
(TAIR Reference:5882)
We have identified many dark-inducible (din) genes that are expressed in Arabidopsis leaves kept in the dark. In the present study we addressed the question of how plant cells sense the depletion of sugars, and how sugar starvation triggers din gene expression in suspension-cultured cells of Arabidopsis. Depletion of sucrose in the medium triggered marked accumulation of din transcripts. Suppression of din gene expression by 2-deoxy-Glc, and a non-suppressive effect exerted by 3-O-methyl-Glc, suggested that sugar-repressible expression of din genes is mediated through the phosphorylation of hexose by hexokinase, as exemplified in the repression of photosynthetic genes by sugars. We have further shown that the signaling triggered by sugar starvation involves protein phosphorylation and dephosphorylation events, and have provided the first evidence that multiple pathways of protein dephosphorylation exist in sugar starvation-induced gene expression. An inhibitor of serine/threonine protein kinase, K-252a, inhibited din gene expression in sugar-depleted cells. Okadaic acid, which may preferentially inhibit type 2A protein phosphatases over type 1, enhanced the transcript levels of all din genes, except din6 and din10, under sugar starvation. Conversely, a more potent inhibitor of type 1 and 2A protein phosphatases, calyculin A, increased transcripts from din2 and din9, but decreased those from other din genes, in sugar-depleted cells. On the other hand, calyculin A, but not okadaic acid, completely inhibited the gene expression of chlorophyll a/b-binding protein under sugar starvation. These results indicate that multiple signaling pathways, mediated by different types of protein phosphatases, regulate gene expression during sugar starvation.
Scanned By: UniProt

Other associated terms: hexokinase activity / kinase activity / binding / protein kinase activity / amino acid catabolic process / dephosphorylation / response to light stimulus / phosphorylation / protein dephosphorylation / protein phosphorylation / cellular response to starvation / AT3G50210.1 / AT3G49620.1 / AT3G49630.1 / response to sucrose / sucrose / Arabidopsis / cultured cells / sporophyte senescent stage / gene expression / AT1G67070 (DIN9) / AT3G50210 / AT3G06850 (BCE2) / AT3G13450 (DIN4) / AT3G47340 (ASN1) / AT3G60140 (DIN2) / AT3G49620 (DIN11) / AT3G49630 / AT4G35770 (SEN1) / AT5G20250 (DIN10) / signaling /
lcus AT3G06850 ( pub:154192)
Symbols: BCE2 | DIN3 | LTA1
Accession:2083358 (TAIR) 		Searched on 2005-11-16
Yes No
Maybe Unverified
Updated by: Gene Merging Project on 2008-08-22
 
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lcus AT5G20250 ( pub:162488)
Symbols: DIN10 | RS6
Accession:2149284 (TAIR) 		1 [abstract] Searched on 2002-01-30
Yes No
Maybe Unverified
Updated by: Gene Merging Project on 2008-08-22
 
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lcus AT1G67070 ( pub:145629)
Symbols: DIN9 | PMI2
Accession:2019748 (TAIR) 		1 [abstract] Searched on 2002-01-30
Yes No
Maybe Unverified
Updated by: Gene Merging Project on 2008-08-22
 
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lcus AT4G35770 ( pub:159669)
Symbols: ATSEN1 | DIN1 | SAG1 | SEN1
Accession:2128038 (TAIR) 		Searched on
Yes No
Maybe Unverified
Updated by: Gene Merging Project on 2008-08-22
 
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lcus AT3G50210 ( pub:152689)
Accession:2074800 (TAIR) 		1 Searched on 2009-06-26
Yes No
Maybe Unverified
Updated by: Linda Hannick on 2003-04-17
 
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lcus AT3G49620 ( pub:157773)
Symbols: DIN11
Accession:2114683 (TAIR) 		1 Searched on 2009-06-26
Yes No
Maybe Unverified
Updated by: Linda Hannick on 2003-04-17
 
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lcus AT3G49630 ( pub:157776)
Accession:2114698 (TAIR) 		1 Searched on 2009-06-26
Yes No
Maybe Unverified
Updated by: Linda Hannick on 2003-04-17
 
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lcus AT3G47340 ( pub:157029)
Symbols: ASN1 | AT-ASN1 | DIN6
Accession:2099580 (TAIR) 		1 [abstract] Searched on 2002-01-30
Yes No
Maybe Unverified
Updated by: Gene Merging Project on 2008-08-22
 
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lcus AT3G13450 ( pub:155878)
Symbols: DIN4 | E1B2
Accession:2092835 (TAIR) 		Searched on
Yes No
Maybe Unverified
Updated by: Gene Merging Project on 2008-08-22
 
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lcus AT3G60140 ( pub:157334)
Symbols: BGLU30 | DIN2 | SRG2
Accession:2101427 (TAIR) 		Searched on
Yes No
Maybe Unverified
Updated by: Gene Merging Project on 2008-08-22
 
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gene AT3G50210.1 ( pub:10168)
Alias: F11C1.50
Accession:2074799 (TAIR) 		Searched on
Yes No
Maybe Unverified
 
(iris / 2003-11-18): Article used for annotation,added as hit (edit)
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gene AT3G49620.1 ( pub:15253)
Alias: T9C5.210
Symbols: DIN11
Accession:2114682 (TAIR) 		Searched on
Yes No
Maybe Unverified
 
(iris / 2003-11-18): Article used for annotation,added as hit (edit)
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gene AT3G49630.1 ( pub:15256)
Alias: T9C5.220
Accession:2114697 (TAIR) 		Searched on
Yes No
Maybe Unverified
 
(iris / 2003-11-18): Article used for annotation,added as hit (edit)
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