phytate/arabidopsis

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Heterologous Expression of Secreted Bacterial BPP and HAP Phytases in Plants Stimulates Arabidopsis thaliana Growth on Phytate.

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Phytases are specialized phosphatases capable of releasing inorganic phosphate from myo-inositol hexakisphosphate (phytate), which is highly abundant in many soils. As inorganic phosphorus reserves decrease over time in many agricultural soils, genetic manipulation of plants to enable secretion of

The genetics of phytate and phosphate accumulation in seeds and leaves of Arabidopsis thaliana, using natural variation.

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Phytate (myo-inositol-1,2,3,4,5,6-hexakisphosphate, InsP6) is the most abundant P-containing compound in plants, and an important anti-nutritional factor, due to its ability to complex essential micro-nutrients, e.g. iron and zinc. Analysis of natural variation for InsP6 and Pi accumulation in seeds

Generation of phytate-free seeds in Arabidopsis through disruption of inositol polyphosphate kinases.

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Phytate (inositol hexakisphosphate, IP6) is a regulator of intracellular signaling, a highly abundant animal antinutrient, and a phosphate store in plant seeds. Here, we report a requirement for inositol polyphosphate kinases, AtIPK1 and AtIPK2beta, for the later steps of phytate synthesis in

Phosphate, phytate and phytases in plants: from fundamental knowledge gained in Arabidopsis to potential biotechnological applications in wheat.

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Phosphorus (P) is an essential macronutrient for all living organisms. In plants, P is taken up from the rhizosphere by the roots mainly as inorganic phosphate (Pi), which is required in large and sufficient quantities to maximize crop yields. In today's agricultural society, crop yield is mostly

Extracellular secretion of Aspergillus phytase from Arabidopsis roots enables plants to obtain phosphorus from phytate.

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Phosphorus (P) deficiency in soil is a major constraint for agricultural production worldwide. Despite this, most soils contain significant amounts of total soil P that occurs in inorganic and organic fractions and accumulates with phosphorus fertilization. A major component of soil organic

GmPAP4, a novel purple acid phosphatase gene isolated from soybean (Glycine max), enhanced extracellular phytate utilization in Arabidopsis thaliana.

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CONCLUSIONS GmPAP4 , a novel plant PAP gene in soybean, has phytase activity. Over-expressing GmPAP4 can enhance Arabidopsis growth when phytate is the sole P source in culture. Phosphorus (P) is an important macronutrient for plant growth and development. However, most of the total P in soils is

Engineered Root Bacteria Release Plant-Available Phosphate from Phytate.

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Microorganisms that release plant-available phosphate from natural soil phosphate stores may serve as biological alternatives to costly and environmentally damaging phosphate fertilizers. To explore this possibility, we engineered a collection of root bacteria to release plant-available

Expression profiling and in silico homology modeling of Inositol penta kis phosphate 2-kinase, a potential candidate gene for low phytate trait in soybean

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Low phytate soybeans are desirable both from a nutritional and economic standpoint. Inositol 1, 3, 4, 5, 6-pentakisphosphate 2-kinase (IPK1), optimizes the metabolic flux of phytate generation in soybean and thus shows much promise as a likely candidate for pathway regulation. In the present

A strong effect of growth medium and organ type on the identification of QTLs for phytate and mineral concentrations in three Arabidopsis thaliana RIL populations.

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The regulation of mineral accumulation in plants is genetically complex, with several genetic loci involved in the control of one mineral and loci affecting the accumulation of different minerals. To investigate the role of growth medium and organ type on the genetics of mineral accumulation, two

A root-associated purple acid phosphatase, SgPAP23, mediates extracellular phytate-P utilization in Stylosanthes guianensis.

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As a major component of soil organic phosphorus (P), phytate-P is unavailable to plants unless hydrolysed by phytase to release inorganic phosphate. However, knowledge on natural variation in root-associated phytase activity and its underlying molecular mechanisms in plants remains fragmentary. In

Molecular characterization, modeling, and docking analysis of late phytic acid biosynthesis pathway gene, inositol polyphosphate 6-/3-/5-kinase, a potential candidate for developing low phytate crops.

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The coding sequence of inositol polyphosphate 6-/3-/5-kinase (GmIPK2) gene was identified and cloned from popular Indian soybean cultivar Pusa-16. The clone was predicted to encode 279 amino acids long, 30.97 kDa protein. Multiple sequence alignment revealed an inositol phosphate-binding motif,

The Arabidopsis ATP-binding cassette protein AtMRP5/AtABCC5 is a high affinity inositol hexakisphosphate transporter involved in guard cell signaling and phytate storage.

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Arabidopsis possesses a superfamily of ATP-binding cassette (ABC) transporters. Among these, the multidrug resistance-associated protein AtMRP5/AtABCC5 regulates stomatal aperture and controls plasma membrane anion channels of guard cells. Remarkably, despite the prominent role of AtMRP5 in

Metabolic profiling of the Arabidopsis pkl mutant reveals selective derepression of embryonic traits.

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Embryos express several unique differentiation characteristics, including the accumulation of a number of metabolites that are generally considered to be unique to seeds. PICKLE (PKL) codes for a CHD3-chromatin remodeling factor that is necessary for repression of embryonic traits in seedlings of

Molecular and biochemical characterization of two plant inositol polyphosphate 6-/3-/5-kinases.

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Despite the high deposition of inositol hexakisphosphate (IP(6)), also known as phytate or phytin, in certain plant tissues little is known at the molecular level about the pathway(s) involved in its production. In budding yeast, IP(6) synthesis occurs through the sequential phosphorylation of

Overexpressing AtPAP15 enhances phosphorus efficiency in soybean.

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Low phosphorus (P) availability is a major constraint to crop growth and production, including soybean (Glycine max), on a global scale. However, 50% to 80% of the total P in agricultural soils exists as organic phosphate, which is unavailable to plants unless hydrolyzed to release inorganic

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