flavanone/arabidopsis thaliana

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Warm and cold parental reproductive environments affect seed properties, fitness, and cold responsiveness in Arabidopsis thaliana progenies.

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Conditions in the parental environment during reproduction can affect the performance of the progenies. The goals of this study were to investigate whether warm or cold temperatures in the parental environment during flowering and seed development affect Arabidopsis thaliana seed properties, growth

CYP93G2 is a flavanone 2-hydroxylase required for C-glycosylflavone biosynthesis in rice.

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C-Glycosylflavones are ubiquitous in the plant kingdom, and many of them have beneficial effects on human health. They are a special group of flavonoid glycosides in which the sugars are C-linked to the flavone skeleton. It has been long presumed that C-glycosylflavones have a different biosynthetic

Nucleotide sequence variation at two genes of the phenylpropanoid pathway, the FAH1 and F3H genes, in Arabidopsis thaliana.

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The FAH1 and F3H genes encode ferulate-5-hydroxylase and flavanone-3-hydroxylase, which are enzymes in the pathways leading to the synthesis of sinapic acid esters and flavonoids, respectively. Nucleotide variation at these genes was surveyed by sequencing a sample of 20 worldwide Arabidopsis

Expanded acceptor substrates flexibility study of flavonol 7-O-rhamnosyltransferase, AtUGT89C1 from Arabidopsis thaliana.

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Acceptor substrates flexibility of previously characterized flavonol 7-O-rhamnosyltransferase (AtUGT89C1) from Arabidopsis thaliana was explored with an endogenous nucleotide diphosphate sugar and five different classes of flavonoids (flavonols, flavones, flavanones, chalcone and stilbenes) through

A single amino acid determines position specificity of an Arabidopsis thaliana CCoAOMT-like O-methyltransferase.

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Caffeoyl-coenzyme A O-methyltransferase (CCoAOMT)-like proteins from plants display a conserved position specificity towards the meta-position of aromatic vicinal dihydroxy groups, consistent with the methylation pattern observed in vivo. A CCoAOMT-like enzyme identified from Arabidopsis thaliana

Biochemical and genetic characterization of Arabidopsis flavanone 3beta-hydroxylase.

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Flavanone 3beta-hydroxylase (F3H; EC 1.14.11.9) is a 2-oxoglutarate dependent dioxygenase that catalyzes the synthesis of dihydrokaempferol, the common precursor for three major classes of 3-hydroxy flavonoids, the flavonols, anthocyanins, and proanthocyanidins. This enzyme also competes for flux

Analysis of flavanone 3-hydroxylase in Arabidopsis seedlings. Coordinate regulation with chalcone synthase and chalcone isomerase.

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A genomic clone encoding flavanone 3-hydroxylase (F3H) was isolated from Arabidopsis thaliana. The deduced amino acid sequence is 72 to 94% identical to all previously reported F3H proteins. Low-stringency DNA blot analysis indicated that F3H is encoded by a single gene in Arabidopsis. The F3H locus

Functional Analysis of Two Flavanone-3-Hydroxylase Genes from Camellia sinensis: A Critical Role in Flavonoid Accumulation.

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Flavonoids are major secondary metabolites in Camellia sinensis. Flavanone-3-hydroxylase (F3H) is a key enzyme in flavonoid biosynthesis in plants. However, its role in the flavonoid metabolism in C. sinensis has not been well studied. In this study, we cloned two F3Hs from C. sinensis, named CsF3Ha

Naringenin inhibits seed germination and seedling root growth through a salicylic acid-independent mechanism in Arabidopsis thaliana.

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Flavonoids fulfill an enormous range of biological functions in plants. In seeds, these compounds play several roles; for instance proanthocyanidins protect them from moisture, pathogen attacks, mechanical stress, UV radiation, etc., and flavonols have been suggested to protect the embryo from

In vitro properties of a recombinant flavonol synthase from Arabidopsis thaliana.

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cDNA corresponding to a flavonol synthase gene from Arabidopsis thaliana was cloned and expressed in Escherichia coli. The recombinant protein was purified to near-homogeneity and the catalytic properties of the enzyme were studied in vitro. Together with kaempferol and apigenin the recombinant

Knock-out mutants from an En-1 mutagenized Arabidopsis thaliana population generate phenylpropanoid biosynthesis phenotypes.

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A collection of 8,000 Arabidopsis thaliana plants carrying 48,000 insertions of the maize transposable element En-1 has been generated. This population was used for reverse genetic analyses to identify insertions in individual gene loci. By using a PCR-based screening protocol, insertions were found

Cytochrome P450 93G1 Is a Flavone Synthase II That Channels Flavanones to the Biosynthesis of Tricin O-Linked Conjugates in Rice.

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Flavones are a major class of flavonoids with a wide range of physiological functions in plants. They are constitutively accumulated as C-glycosides and O-linked conjugates in vegetative tissues of grasses. It has long been presumed that the two structural modifications of flavones occur through

Differential regulation of closely related R2R3-MYB transcription factors controls flavonol accumulation in different parts of the Arabidopsis thaliana seedling.

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The genes MYB11, MYB12 and MYB111 share significant structural similarity and form subgroup 7 of the Arabidopsis thaliana R2R3-MYB gene family. To determine the regulatory potential of these three transcription factors, we used a combination of genetic, functional genomics and metabolite analysis

Development of bisphenol A (BPA)-sensing indicator Arabidopsis thaliana which synthesizes anthocyanin in response to BPA in leaves.

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Bisphenol A (BPA) is an estrogenic endocrine disruptor which disturbs a normal animal development. We generated an indicator plant that senses and provides a clear visual indicator of an estrogen-like compound BPA in the environment. We developed transgenic Arabidopsis lines expressing a construct

Flavonoid biosynthesis controls fiber color in naturally colored cotton.

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The existence of only natural brown and green cotton fibers (BCF and GCF, respectively), as well as poor fiber quality, limits the use of naturally colored cotton (Gossypium hirsutum L.). A better understanding of fiber pigment regulation is needed to surmount these obstacles. In this work,

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