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E-GEOD-36271

ABSTRACT: Transcription profiling by array of rice dwarf d10-1 and d14-1 mutants treated with GR24, a synthetic strigolactone analog

PROVIDER: E-GEOD-36271 | ExpressionAtlas | 2015-11-23

REPOSITORIES: ExpressionAtlas

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			Action	DRS
	E-GEOD-36271-analysis-methods.tsv	Tabular
	E-GEOD-36271-atlasExperimentSummary.Rdata	Rdata
	E-GEOD-36271-configuration.xml	Xml
	E-GEOD-36271-percentile-ranks.tsv	Tabular
	E-GEOD-36271.condensed-sdrf.tsv	Tabular

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Strigolactone and cytokinin act antagonistically in regulating rice mesocotyl elongation in darkness

Project description:Strigolactones have been defined as a new group of phytohormones that regulate shoot branching. Tthe phenotypes of strigolacton-related rice (Oryza sativa) dwarf (d) mutants demonstrated that SLs inhibit mesocotyl elongation by controlling cell division. Moreover, the trans-zeatin, one of active cytokinins, content of mesocotyls was increased in the SL-deficient d10-1 and SL-insensitive d14-1 mutants. To examine if there are genes related to cytokinin-biosynthesis or -degradation among the strigolactone-responsive genes expressed in the mesocotyl, we carried out microarray analyses using d10-1, d14-1 and the wild-type grown under dark conditions, with or without pretreatment of a synthetic strigolactone analog, GR24.

2013-12-31 | GSE36271 | GEO

Strigolactone and cytokinin act antagonistically in regulating rice mesocotyl elongation in darkness

Project description:Strigolactones have been defined as a new group of phytohormones that regulate shoot branching. The phenotypes of strigolacton-related rice (Oryza sativa) dwarf (d) mutants demonstrated that SLs inhibit mesocotyl elongation by controlling cell division. Moreover, the trans-zeatin, one of active cytokinins, content of mesocotyls was increased in the SL-deficient d10-1 and SL-insensitive d14-1 mutants. To examine if there are genes related to cytokinin-biosynthesis or -degradation among the strigolactone-responsive genes expressed in the mesocotyl, we carried out microarray analyses using d10-1, d14-1 and the wild-type grown under dark conditions, with or without pretreatment of a synthetic strigolactone analog, GR24. Gene expression profiles in 4-day-old mesocotyls of dwarf (d) mutants (d10-1 and d14-1) and wild-type germinated under dark conditions with or without treatment of 1 μM GR24 were analyzed. Three biological replicates were prepared for each conditions, and a total of eighteen samples were analyzed.

2013-12-31 | E-GEOD-36271 | biostudies-arrayexpress

Unraveling the MAX2 Protein Network in Arabidopsis thaliana: Identification of the Protein Phosphatase PAPP5 as a Novel MAX2 Interactor

Project description:The F-box protein MORE AXILLARY GROWTH 2 (MAX2) is a central component in the signaling cascade of strigolactones (SLs) as well as of the smoke derived karrikins (KARs) and the so far unknown endogenous KAI2 ligand (KL). The two groups of molecules are involved in overlapping and unique developmental processes, and signal-specific outcomes are attributed to perception by the paralogous α/β-hydrolases DWARF14 (D14) for SL and KARRIKIN INSENSITIVE 2/ HYPOSENSITIVE TO LIGHT (KAI2/HTL) for KAR/KL. Additionally, depending on which receptor is activated, specific members of the SUPPRESSOR OF MAX2 1 (SMAX1) – LIKE (SMXL) 6, 7, 8 clade control KAR/KL and SL responses respectively. As proteins that function in the same signal transduction pathway often occur in large protein complexes, we aimed at discovering new players of the MAX2, D14 and KAI2 protein network by tandem affinity purification using Arabidopsis cell cultures. When using MAX2 as a bait, various proteins were co-purified among which general components of the Skp1-Cullin-F-box complex and members of the CONSTITUTIVE PHOTOMORPHOGENIC 9 signalosome. Here, we report the identification of a novel interactor of MAX2, a type 5 serine/threonine protein phosphatase, designated PHYTOCHROME-ASSOCIATED PROTEIN PHOSPHATASE 5 (PAPP5). Quantitative affinity purification pointed at PAPP5 as being more present in KAI2 rather than D14 protein complexes. In agreement, mutant analysis suggests that PAPP5 modulates KAR/KL-dependent seed germination in suboptimal conditions and seedling development. Additionally, PAPP5 was found to dephosphorylate MAX2 in vivo independent of the synthetic strigolactone analog, rac-GR24. Together, by analyzing the protein complexes to which MAX2, D14 and KAI2 belong, we revealed a new MAX2 interactor that might act through dephosphorylating MAX2 to control mainly KAR/KL signaling.

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Project description:Transcription profiling of rice dwarf mutant Fukei71

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Project description:Transcription profiling by high throughput sequencing of rice oscerk1 mutants treated with two fungus-secreted substances

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