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Pubmed ID :21502189
Publication Date : //

Flavonols accumulate asymmetrically and affect auxin transport in Arabidopsis.


Flavonoids represent a class of secondary metabolites with diverse functions in plants including ultraviolet protection, pathogen defense, and interspecies communication. They are also known as modulators of signaling processes in plant and animal systems and therefore are considered to have beneficial effects as nutraceuticals. The rol1-2 (for repressor of lrx1) mutation of Arabidopsis (Arabidopsis thaliana) induces aberrant accumulation of flavonols and a cell-growth phenotype in the shoot. The hyponastic cotyledons, aberrant shape of pavement cells, and deformed trichomes in rol1-2 mutants are suppressed by blocking flavonoid biosynthesis, suggesting that the altered flavonol accumulation in these plants induces the shoot phenotype. Indeed, the identification of several transparent testa, myb, and fls1 (for flavonol synthase1) alleles in a rol1-2 suppressor screen provides genetic evidence that flavonols interfere with shoot development in rol1-2 seedlings. The increased accumulation of auxin in rol1-2 seedlings appears to be caused by a flavonol-induced modification of auxin transport. Quantification of auxin export from mesophyll protoplasts revealed that naphthalene-1-acetic acid but not indole-3-acetic acid transport is affected by the rol1-2 mutation. Inhibition of flavonol biosynthesis in rol1-2 fls1-3 restores naphthalene-1-acetic acid transport to wild-type levels, indicating a very specific mode of action of flavonols on the auxin transport machinery.

Authors : Kuhn Benjamin M , Geisler Markus , Bigler Laurent , Ringli Christoph ,

Related products :

Catalog number Product name Quantity
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AS11 1838 Antibody: PIN1-like auxin transport protein (pin2), Immunogen: recombinant part of Populus TrichocarpaPIN1 protein Q8LKH0, Host: rabbit, polyclonal, Confirmed reactivity: to be determined 100
AS11 1839 Antibody: PIN1-like auxin transport protein (pin3), Immunogen: recombinant part of Populus TrichocarpaPIN1 protein Q8LKH1, Host: rabbit, polyclonal, Confirmed reactivity: to be determined 100
AS11 1809 Antibody: DEH1 | , Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thalaiana, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS11 1808 Antibody: CHS2 | , Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thalaiana, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
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AS08 289 Antibody: ZEP | Zeaxanthin Epoxidase, Immunogen: KLH-conjugated synthetic peptide derived from ZEP sequence of Arabidopsis thaliana Q9FGC7, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis 200
AS09 478 Antibody: L13-1 | 60S ribosomal protein L13-1, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thaliana P41127, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thalian 100
AS09 479 Antibody: GST class-phi | glutathione S tranferase, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thaliana P46422, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis th 100
AS12 2109 Antibody: ViNST1 | Stilbene synthase 1, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thalianaMPK4, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS12 2365 Antibody: CNX1_2 | CALNEXIN HOMOLOG 1_2, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thalianaPIF5, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS12 2371 Antibody: mMDH2 | mitochondrial MALATE DEHYDROGENASE 2, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thalianaPIF5, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis t 200
AS12 2108 Antibody: PED1 | 3-ketoacyl-CoA thiolase 2, peroxisomal , Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thalianaPED1, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis 200
AS12 2113 Antibody: AHK2 | HISTIDINE KINASE 2, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thalianaPIF5, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS12 2370 Antibody: GPA1 | G PROTEIN ALPHA-1, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thalianaPIF5, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS12 2369 Antibody: PR-4 | PATHOGENESIS-RELATED PROTEIN 4, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thalianaPIF5, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS12 2367 Antibody: ADK1_2 | ADENOSINE KINASE 1_2, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thalianaPIF5, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS12 2366 Antibody: PR-2 | PATHOGENESIS-RELATED PROTEIN 2, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thalianaPIF5, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS12 2372 Antibody: AGB1 | G PROTEIN BETA-1, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thalianaPIF5, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS12 2373 Antibody: PR-5 | PATHOGENESIS-RELATED PROTEIN 5, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thalianaPIF5, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS09 485 Antibody: AtMTP1 | vacuolar Zn2+_H+ antiporter, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thaliana MTP1 Q9ZT63, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis 100
AS09 482 Antibody: AtTIP1 | Tonoplast intrinsic protein 1-1, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thaliana P25818, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis th 100
SIODN-1 Inhibitory iODN- class I II hybrid, may also affect TLR7 and TLR8 signaling. 100 ug
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