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staurosporine/arabidopsis thaliana

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The acceptor availability at photosystem I and ABA control nuclear expression of 2-Cys peroxiredoxin-A in Arabidopsis thaliana.

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The redox-regulated 2-Cys peroxiredoxin-A (2CPA) promoter, which drives expression of a dominant chloroplast antioxidant enzyme, responds to signals originating from the photosynthetic electron transport downstream of PSI. Modulation of CO(2)- and NO(3)(-) -reduction rates in reporter gene plants
Plants responses to mechanical injury are complex and include the induced expression of defence-related genes. The phytohormone JA has been reported to mediate some of these responses. To elucidate further the signal transduction processes involved, the action of specific agonists and antagonists of

Dynamic subnuclear relocalisation of WRKY40 in response to Abscisic acid in Arabidopsis thaliana.

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WRKY18, WRKY40 and WRKY60 are members of the WRKY transcription factor family and function as transcriptional regulators in ABA signal transduction in Arabidopsis thaliana. Here we show that WRKY18 and WRKY40, but not WRKY60, co-localise with PIF3, PIF4 and PHYB to Phytochrome B-containing nuclear

Protein kinase domain of CTR1 from Arabidopsis thaliana promotes ethylene receptor cross talk.

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Ethylene controls many aspects of plant growth and development. Signaling by the gaseous phytohormone is initiated by disulfide-linked membrane-bound receptors, and the formation of heteromeric receptor clusters contributes to the broad range of ethylene responsiveness. In Arabidopsis thaliana, the
Five Ca(2+)-independent protein kinases were rapidly activated by hypoosmotic stress, moderate or high hyperosmolarity induced by several osmolytes, sucrose, mannitol or NaCl. Three of these kinases, transiently activated by hypoosmolarity, recognised by anti-phosphorylated mitogen-activated protein
The oligosaccharyltransferase (OT) complex catalyzes N-glycosylation of nascent secretory polypeptides in the lumen of the endoplasmic reticulum. Despite their importance, little is known about the structure and function of plant OT complexes, mainly due to lack of efficient recombinant protein

hNOA1 interacts with complex I and DAP3 and regulates mitochondrial respiration and apoptosis.

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Mitochondria are dynamic organelles that play key roles in metabolism, energy production, and apoptosis. Coordination of these processes is essential to maintain normal cellular functions. Here we characterized hNOA1, the human homologue of AtNOA1 (Arabidopsis thaliana nitric oxide-associated

The RY/Sph element mediates transcriptional repression of maturation genes from late maturation to early seedling growth.

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In orthodox seeds, the transcriptional activator ABI3 regulates two major stages in embryo maturation: a mid-maturation (MAT) stage leading to accumulation of storage compounds, and a late maturation (LEA) stage leading to quiescence and desiccation tolerance. Our aim was to elucidate mechanisms for

Inhibitors of protein kinases and phosphatases alter root morphology and disorganize cortical microtubules.

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To investigate molecular mechanisms controlling plant morphogenesis, we examined the morphology of primary roots of Arabidopsis thaliana and the organization of cortical microtubules in response to inhibitors of serine/threonine protein phosphatases and kinases. We found that cantharidin, an

Phosphorylation of the inward-rectifying potassium channel KAT1 by ABR kinase in Vicia guard cells.

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A 48-kDa protein kinase was detected in Vicia faba guard cell protoplasts by an in-gel protein kinase assay using a recombinant peptide (KAT1C) of the carboxyl-terminus of an inward-rectifying voltage-dependent K+ channel cloned from Arabidopsis thaliana, KAT1. This protein kinase (ABR* kinase) was

PINOID kinase regulates root gravitropism through modulation of PIN2-dependent basipetal auxin transport in Arabidopsis.

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Reversible protein phosphorylation is a key regulatory mechanism governing polar auxin transport. We characterized the auxin transport and gravitropic phenotypes of the pinoid-9 (pid-9) mutant of Arabidopsis (Arabidopsis thaliana) and tested the hypothesis that phosphorylation mediated by PID kinase

AtMCP1b, a chloroplast-localised metacaspase, is induced in vascular tissue after wounding or pathogen infection

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cDNA corresponding to the Arabidopsis type I metacaspase AtMCP1b was isolated from plants infected with Pseudomonas syringae. A positive correlation between AtMCP1b expression and cell death was observed in the presence of staurosporine, a protein kinase inhibitor that induces programmed cell death.

Nuclear bodies and compartmentalization of pre-mRNA splicing factors in higher plants.

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We studied the fine structural organization of nuclear bodies in the root meristem during germination of maize and Arabidopsis thaliana using electron microscopy (EM). Cajal bodies (CBs) were observed in quiescent embryos and germinating cells in both species. The number and distribution of CBs were
Calcium (Ca2+), as a second messenger, is crucial for signal transduction processes during many biotic interactions. We demonstrate that cellular [Ca2+] elevations are early events in the interaction between the plant growth-promoting fungus Piriformospora indica and Arabidopsis thaliana. A cell

Modulation of cellular redox status by thiamine-activated NADPH oxidase confers Arabidopsis resistance to Sclerotinia sclerotiorum.

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Sclerotinia sclerotiorum can initially suppress host oxidative burst to aid infection establishment, but later promotes reactive oxygen species (ROS) generation as proliferation advances. Here, it was shown that the cellular redox status can be modulated by thiamine to protect Arabidopsis thaliana
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