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Leht 1 alates 28 tulemused
Induction of early bolting in Arabidopsis thaliana by triacontanol, cerium and lanthanum is correlated with increased endogenous concentration of isopentenyl adenosine (iPAdos).
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The effects of triacontanol (TRIA), applied singly or in combination with cerium nitrate and lanthanum nitrate, on bolting of Arabidopsis thaliana were studied. Triacontanol (0.1 to 0.6 microM) added to the culture medium induced early bolting. TRIA (0.3 microM) applied with low concentrations of
Characterisation of lanthanum toxicity for root growth of Arabidopsis thaliana from the aspect of natural genetic variation
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The mechanism of lanthanum (La3+) toxicity on root growth of Arabidopsis was studied by physiological and genetic approaches using Landsberg erecta (Ler) × Columbia (Col) recombinant inbred lines (RILs) and other natural accessions. Quantitative trait locus (QTL) analyses revealed
Cerium and lanthanum promote floral initiation and reproductive growth of Arabidopsis thaliana.
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The effects of cerium and lanthanum on the vegetative growth, floral initiation and reproductive growth of Arabidopsis thaliana were studied. Addition of cerium nitrate (0.5-10 µM) or lanthanum nitrate (0.5-50 µM) to the culture medium significantly increased the lengths of primary roots, but had no
Lanthanum Inhibits Primary Root Growth by Repressing Auxin Carrier Abundances in Arabidopsis.
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Lanthanum (La) is one of rare earth elements that was used as a crop growth stimulants; however, high concentration of La markedly inhibited plant growth. Our previous study indicated that, although La induced the expression of auxin biosynthesis-related genes, it markedly repressed primary root
Mitochondrial morphology transition is an early indicator of subsequent cell death in Arabidopsis.
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Mitochondrial morphology and dynamics were investigated during the onset of cell death in Arabidopsis thaliana. Cell death was induced by either chemical (reactive oxygen species (ROS)) or physical (heat) shock. Changes in mitochondrial morphology in leaf tissue, or isolated protoplasts, each
A chimeric protein of aluminum-activated malate transporter generated from wheat and Arabidopsis shows enhanced response to trivalent cations.
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TaALMT1 from wheat (Triticum aestivum) and AtALMT1 from Arabidopsis thaliana encode aluminum (Al)-activated malate transporters, which confer acid-soil tolerance by releasing malate from roots. Chimeric proteins from TaALMT1 and AtALMT1 (Ta::At, At::Ta) were previously analyzed in Xenopus laevis
Effect of hypergravity stimulus on XTH gene expression in Arabidopsis thaliana.
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Hypergravity stimulus suppresses plant shoot growth by making the cell wall rigid. Xyloglucan endotransglucosylase/hydrolase (XTH) is involved in determining the rigidity of cell walls. We demonstrated that hypergravity influenced the expression of some XTH genes in shoots of Arabidopsis thaliana
Physico-chemical property of rare earths-effects on the energy regulation of photosystem II in Arabidopsis thaliana.
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Photosystem II (PSII) from Arabidopsis thaliana treated by lanthanum (La(3+)), cerium (Ce(3+)), and neodymium (Nd(3+)) were isolated to investigate the effects of 4f electron characteristics and alternation valence of rare earth elements (REEs) on PSII function regulation comparatively. Results
Rare earth elements regulate the endocytosis and DNA methylation in root cells of Arabidopsis thaliana.
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With increasing application of rare earth elements (REEs), the resulting environmental safety has attracted extensive attention. When REEs act on plant leaves, REEs can initiate endocytosis in leaf cells, causing more REEs enter plant cells and then severe damage to plants. But when REEs directly
Fluorescence resonance energy transfer-sensitized emission of yellow cameleon 3.60 reveals root zone-specific calcium signatures in Arabidopsis in response to aluminum and other trivalent cations.
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Fluorescence resonance energy transfer-sensitized emission of the yellow cameleon 3.60 was used to study the dynamics of cytoplasmic calcium ([Ca(2+)](cyt)) in different zones of living Arabidopsis (Arabidopsis thaliana) roots. Transient elevations of [Ca(2+)](cyt) were observed in response to
A calcium sensor calcineurin B-like 9 negatively regulates cold tolerance via calcium signaling in Arabidopsis thaliana.
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Calcineurin B-like protein 9 (CBL9) plays important roles in response to ABA, K+ deprivation in plants. However, whether CBL9 modulates plant adaptation to low-temperature stress is elusive. In this study, we demonstrated that the cbl9 mutants increased freezing tolerance under both
Calcium signalling in Arabidopsis thaliana responding to drought and salinity.
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Changes in cytosolic free calcium concentration ([Ca2+]cyt) in response to mannitol (drought) and salt treatments were detected in vivo in intact whole Arabidopsis seedlings. Transient elevations of [Ca2+]cyt to around 1.5 microM were observed, and these were substantially inhibited by pretreatment
Identification of cyclic GMP-activated nonselective Ca2+-permeable cation channels and associated CNGC5 and CNGC6 genes in Arabidopsis guard cells.
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Cytosolic Ca(2+) in guard cells plays an important role in stomatal movement responses to environmental stimuli. These cytosolic Ca(2+) increases result from Ca(2+) influx through Ca(2+)-permeable channels in the plasma membrane and Ca(2+) release from intracellular organelles in guard cells.
Characterization of AtALMT1 expression in aluminum-inducible malate release and its role for rhizotoxic stress tolerance in Arabidopsis.
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Malate transporters play a critical role in aluminum (Al) tolerance responses for some plant species, such as Arabidopsis (Arabidopsis thaliana). Here, we further characterize AtALMT1, an Arabidopsis aluminum-activated malate transporter, to clarify its specific role in malate release and Al stress
Ca2+-permeable mechanosensitive channels MCA1 and MCA2 mediate cold-induced cytosolic Ca2+ increase and cold tolerance in Arabidopsis.
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Cold shock triggers an immediate rise in the cytosolic free calcium concentration ([Ca2+]cyt) in Arabidopsis thaliana and this cold-induced elevation of [Ca2+]cyt is inhibited by lanthanum or EGTA. It is suggested that intracellular calcium mainly contributes to the cold-induced [Ca2+]cyt response
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