guanosine/arabidopsis thaliana

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The effect of ethylene and cytokinin on guanosine 5'-triphosphate binding and protein phosphorylation in leaves of Arabidopsis thaliana.

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Binding of [alpha-32P]guanosine 5'-triphosphate ([alpha-32P]GTP) has been demonstrated in a Triton X-100-solubilised membrane fraction from leaves of Arabidopsis thaliana (L.) Heynh. Binding was stimulated by 1 h pre-treatment of leaves with ethylene and this effect was antagonised by the inclusion

Guanosine tetraphosphate modulates salicylic acid signalling and the resistance of Arabidopsis thaliana to Turnip mosaic virus.

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Chloroplasts can act as key players in the perception and acclimatization of plants to incoming environmental signals. A growing body of evidence indicates that chloroplasts play a critical role in plant immunity. Chloroplast function can be regulated by the nucleotides guanosine tetraphosphate and

Plant purine nucleoside catabolism employs a guanosine deaminase required for the generation of xanthosine in Arabidopsis.

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Purine nucleotide catabolism is common to most organisms and involves a guanine deaminase to convert guanine to xanthine in animals, invertebrates, and microorganisms. Using metabolomic analysis of mutants, we demonstrate that Arabidopsis thaliana uses an alternative catabolic route employing a

Cyclic adenosine 5'-diphosphoribose (cADPR) cyclic guanosine 3',5'-monophosphate positively function in Ca(2+) elevation in methyl jasmonate-induced stomatal closure, cADPR is required for methyl jasmonate-induced ROS accumulation NO production in guard cells.

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Methyl jasmonate (MeJA) signalling shares several signal components with abscisic acid (ABA) signalling in guard cells. Cyclic adenosine 5'-diphosphoribose (cADPR) and cyclic guanosine 3',5'-monophosphate (cGMP) are second messengers in ABA-induced stomatal closure. In order to clarify involvement

Arabidopsis thaliana constitutively active ROP11 interacts with the NADPH oxidase respiratory burst oxidase homologue F to regulate reactive oxygen species production in root hairs

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Reactive oxygen species (ROS) play a key signalling role in cells. Plant NADPH oxidases, also known as respiratory burst oxidase homologues (Rbohs), are well characterised ROS-generating systems. In this study, we found that the constitutively active small guanosine triphosphatase (GTPase) ROP11

Gibberellic acid and cGMP-dependent transcriptional regulation in Arabidopsis thaliana.

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An ever increasing amount of transcriptomic data and analysis tools provide novel insight into complex responses of biological systems. Given these resources we have undertaken to review aspects of transcriptional regulation in response to the plant hormone gibberellic acid (GA) and its second

Cloning and characterization of the gene encoding IMP dehydrogenase from Arabidopsis thaliana.

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We have cloned and characterized the gene encoding inosine monophosphate dehydrogenase (IMPDH) from Arabidopsis thaliana (At). The transcription unit of the At gene spans approximately 1900 bp and specifies a protein of 503 amino acids with a calculated relative molecular mass (M(r)) of 54,190. The

The role of decapping proteins in the miRNA accumulation in Arabidopsis thaliana.

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Decapping 1 (DCP1), Decapping 2 (DCP2) and VARICOSE (VCS) are components of the decapping complex that removes the 7-methyl-guanosine 5'-diphosphate from the 5' end of mRNAs. In animals, the decapping proteins are involved in miRNA-mediated gene silencing, whereas in plants the roles of the

Hydrogen peroxide is involved in cGMP modulating the lateral root development of Arabidopsis thaliana.

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3',5'-cyclic guanosine monophosphate (cGMP) and hydrogen peroxide (H₂O₂) function as the important signaling molecule which promote the lateral root development of Arabidopsis thaliana. In this study, interestingly, application of 8-Br-cGMP (the membrane permeable cGMP analog) promoted the

Structural and functional characteristics of cGMP-dependent methionine oxidation in Arabidopsis thaliana proteins.

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BACKGROUND Increasing structural and biochemical evidence suggests that post-translational methionine oxidation of proteins is not just a result of cellular damage but may provide the cell with information on the cellular oxidative status. In addition, oxidation of methionine residues in key

At-GDI1 from Arabidopsis thaliana encodes a rab-specific GDP dissociation inhibitor that complements the sec19 mutation of Saccharomyces cerevisiae.

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Rab GTPases play a central role in the control of vesicular membrane traffic. These proteins cycle between cytosolic and membrane-bound compartments in a guanine nucleotide-dependent manner, a process that is regulated by several accessory proteins. Of particular interest are the Rab guanosine

Identification and characterization of a novel cap-binding protein from Arabidopsis thaliana.

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Cap-binding proteins specifically bind to the 7-methyl guanosine (m7G) functional group at the 5' end of eukaryotic mRNAs. A novel Arabidopsis thaliana protein has been identified that has sequence similarity to cap-binding proteins but is clearly a different form of the protein. The most obvious

Indolyl-3-butyric acid-induced Arabidopsis stomatal opening mediated by 3',5'-cyclic guanosine-monophosphate.

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It has been pharmacologically suggested that 3',5'-cyclic guanosine-monophosphate (cGMP) mediates indolyl-3-butyric acid (IBA)-induced stomatal opening. In Arabidopsis thaliana (L.) Heynh., such investigations compared the wild type (Columbia and Ws ecotypes) to mutants knockout for either

The minimal ribosomal RNA gene promoter of Arabidopsis thaliana includes a critical element at the transcription initiation site.

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The genes encoding the precursor of 18S, 5.8S and 25S ribosomal RNAs are transcribed in the nucleolus by RNA polymerase I. Unlike rRNA gene promoters in animals which differ substantially across species boundaries, plant rRNA gene promoters share sequence similarity for several nucleotides upstream

cGMP is required for seed germination in Arabidopsis thaliana.

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Cyclic guanosine 3',5'-monophosphate (cGMP) is an important second messenger in animals, and is emerging as a player in regulatory functions in plants. In this study, we investigated the role of cGMP in seed germination in Arabidopsis thaliana (Col-0). We demonstrated that both, a membrane-permeant

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