boron/arabidopsis

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Expression of the Arabidopsis borate efflux transporter gene, AtBOR4, in rice affects the xylem loading of boron and tolerance to excess boron.

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Boron is an essential nutrient for plants, but it is toxic in excess. Transgenic rice plants expressing an Arabidopsis thaliana borate efflux transporter gene, AtBOR4, at a low level exhibited increased tolerance to excess boron. Those lines with high levels of expression exhibited reduced growth.

Differential expression of three BOR1 genes corresponding to different genomes in response to boron conditions in hexaploid wheat (Triticum aestivum L.).

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Boron (B) is an essential micronutrient for plants. Efflux-type B transporters, BORs, have been identified in Arabidopsis thaliana and rice. Here we identified BOR1 genes encoding B efflux transporters, from the hexaploid genome of wheat (Triticum aestivum L.). We cloned three genes closely related

Exogenous Boron supplementation partially rescues fertilization defect of osbor4 mutant.

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Arabidopsis thaliana BOR1 is the first boron (B) transporter identified in the living systems. In the rice genome, there are four AtBOR1-like genes, OsBOR1, 2, 3 and 4. We have previously demonstrated that OsBOR4 is a B efflux transporter gene specifically expressed in rice pollen. OsBOR4

VvBOR1, the grapevine ortholog of AtBOR1, encodes an efflux boron transporter that is differentially expressed throughout reproductive development of Vitis vinifera L.

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Boron (B) is an essential micronutrient for normal development of roots, shoots and reproductive tissues in plants. Due to its role in the structure of rhamnogalacturonan II, a polysaccharide required for pollen tube growth, B deficiency has been associated with the occurrence of parthenocarpic

bor1-1, an Arabidopsis thaliana mutant that requires a high level of boron.

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bor1-1 (high boron requiring), an Arabidopsis thaliana mutant that requires a high level of B, was isolated. When the B concentration in the medium was reduced to 3 microM, the expansion of rosette leaves was severely affected in bor1-1 but not in wild-type plants. In a medium containing 30 microM B

EST-SNP discovery and dense genetic mapping in lentil (Lens culinaris Medik.) enable candidate gene selection for boron tolerance.

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Large-scale SNP discovery and dense genetic mapping in a lentil intraspecific cross permitted identification of a single chromosomal region controlling tolerance to boron toxicity, an important breeding objective. Lentil (Lens culinaris Medik.) is a highly nutritious food legume crop that is

Effects of Boron on Proton Transport and Membrane Properties of Sunflower (Helianthus annuus L.) Cell Microsomes.

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Boron deficiency and toxicity inhibit ATP-dependent H+ pumping and vanadate-sensitive ATPase activity in sunflower roots and cell suspensions. The effects of boron on H+ pumping and on passive H+ conductance, as well as on fluorescence anisotropy in KI-washed microsomes isolated from sunflower

Boron-Dependent Translational Suppression of the Borate Exporter BOR1 Contributes to the Avoidance of Boron Toxicity.

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Boron (B) is an essential element for plants; however, as high B concentrations are toxic, B transport must be tightly regulated. BOR1 is a borate exporter in Arabidopsis (Arabidopsis thaliana) that facilitates B translocation into shoots under B deficiency conditions. When the B supply is

Cloning and characterization of boron transporters in Brassica napus.

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Six full-length cDNA encoding boron transporters (BOR) were isolated from Brassica napus (AACC) by rapid amplification of cDNA ends (RACE). The phylogenic analysis revealed that the six BORs were the orthologues of AtBOR1, which formed companying with the triplication and allotetra-ploidization

Functional characterization of Citrus macrophylla BOR1 as a boron transporter.

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Plants have evolved to develop an efficient system of boron uptake and transport using a range of efflux carriers named BOR proteins. In this work we isolated and characterized a boron transporter of citrus (Citrus macrophylla), which was named CmBOR1 for its high homology to AtBOR1. CmBOR1 has 4403

Rapid transporter regulation prevents substrate flow traffic jams in boron transport.

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Nutrient uptake by roots often involves substrate-dependent regulated nutrient transporters. For robust uptake, the system requires a regulatory circuit within cells and a collective, coordinated behaviour across the tissue. A paradigm for such systems is boron uptake, known for its directional

Root Responses to Boron Deficiency Mediated by Ethylene.

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Low boron (B) supply alters the architecture of the root system in Arabidopsis thaliana seedlings, leading to a reduction in the primary root growth and an increase in the length and number of root hairs. At short-term (hours), B deficiency causes a decrease in the cell elongation of the primary

Boron transport mechanisms: collaboration of channels and transporters.

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Boron (B) is an essential element for plants, but is also toxic when present in excess. B deficiency and toxicity are both major agricultural problems worldwide, and elucidating the molecular mechanisms of B transport should allow us to develop technology to alleviate B deficiency and toxicity

Altered plant organogenesis under boron deficiency is associated with changes in high-mannose N-glycan profile that also occur in animals.

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Boron (B) deficiency affects the development of Pisum sativum nodules and Arabidopsis thaliana root meristems. Both organs show an alteration of cell differentiation that result in the development of tumor-like structures. The fact that B in plants is not only able to interact with components of the

WRKY6 is involved in the response to boron deficiency in Arabidopsis thaliana.

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Boron (B) is one of the essential nutrients for plant growth and reproduction. Transcriptome analyses have identified genes regulated by B deficiency, but their function mostly remains elusive. To identify the functions of B deficiency-inducible genes, T-DNA insertion mutants of 10 B

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