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Pàgina 1 des de 17 resultats
Regulation of FATTY ACID ELONGATION1 expression and production in Brassica oleracea and Capsella rubella.
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The contribution of variations in coding regions or promoters to the changes in FAE1 expression levels have be quantified and compared in parallel by specifically designed swapping constructs. FATTY ACID ELONGATION1 (FAE1) is a key gene in control of erucic acid synthesis in plant seeds.
The fate of retrotransposed processed genes in Arabidopsis thaliana.
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Processed genes are functional genes that have arisen as a result of the retrotransposition of mRNA molecules. We found 6 genes that generated processed genes in the common ancestor of five Brassicaceae species (Arabidopsis thaliana, Arabidopsis lyrata, Capsella rubella, Brassica rapa and
Divergent evolutionary and expression patterns between lineage specific new duplicate genes and their parental paralogs in Arabidopsis thaliana.
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Gene duplication is an important mechanism for the origination of functional novelties in organisms. We performed a comparative genome analysis to systematically estimate recent lineage specific gene duplication events in Arabidopsis thaliana and further investigate whether and how these new
Sequence and functional characterization of MIRNA164 promoters from Brassica shows copy number dependent regulatory diversification among homeologs.
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The impact of polyploidy on functional diversification of cis-regulatory elements is poorly understood. This is primarily on account of lack of well-defined structure of cis-elements and a universal regulatory code. To the best of our knowledge, this is the first report on characterization of
Brassica database (BRAD) version 2.0: integrating and mining Brassicaceae species genomic resources.
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The Brassica database (BRAD) was built initially to assist users apply Brassica rapa and Arabidopsis thaliana genomic data efficiently to their research. However, many Brassicaceae genomes have been sequenced and released after its construction. These genomes are rich resources for comparative
Comparative analysis of the MIR319a microRNA locus in Arabidopsis and related Brassicaceae.
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MicroRNAs (miRNAs) are important regulators of gene expression in multicellular organisms. Yet, little is known about their molecular evolution. The 20- to 22-nt long miRNAs are processed in plants from foldbacks that are a few hundred base pairs in size. Often, these foldbacks are embedded in much
Genome-wide identification and characterization of CONSTANS-like gene family in radish (Raphanus sativus).
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Floral induction that initiates bolting and flowering is crucial for reproductive fitness in radishes. CONSTANS-like (CO-like, COL) genes play an important role in the circadian clock, which ensures regular development through complicated time-keeping mechanisms. However, the specific biological and
Microsynteny and phylogenetic analysis of tandemly organised miRNA families across five members of Brassicaceae reveals complex retention and loss history.
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Plant genomes are characterized by the presence of large miRNA gene families which are few in number. The expansion of miRNA families is thought to be driven by gene and genome duplication. Some members of these miRNA gene families are tandemly arranged and their analysis is of interest because such
Microsynteny analysis to understand evolution and impact of polyploidization on MIR319 family within Brassicaceae.
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The availability of a large number of whole-genome sequences allows comparative genomic analysis to reveal and understand evolution of regulatory regions and elements. The role played by events such as whole-genome and segmental duplications followed by genome fractionation in shaping genomic
Loss and retention of resistance genes in five species of the Brassicaceae family.
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BACKGROUND
Plants have evolved disease resistance (R) genes encoding for nucleotide-binding site (NB) and leucine-rich repeat (LRR) proteins with N-terminals represented by either Toll/Interleukin-1 receptor (TIR) or coiled-coil (CC) domains. Here, a genome-wide study of presence and diversification
Comparisons of pollen coat genes across Brassicaceae species reveal rapid evolution by repeat expansion and diversification.
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Reproductive genes and traits evolve rapidly in many organisms, including mollusks, algae, and primates. Previously we demonstrated that a family of glycine-rich pollen surface proteins (GRPs) from Arabidopsis thaliana and Brassica oleracea had diverged substantially, making identification of
Unearthing a sesterterpene biosynthetic repertoire in the Brassicaceae through genome mining reveals convergent evolution.
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Sesterterpenoids are a rare terpene class harboring untapped chemodiversity and bioactivities. Their structural diversity originates primarily from the scaffold-generating sesterterpene synthases (STSs). In fungi, all six known STSs are bifunctional, containing C-terminal trans-prenyltransferase
Evolution of genome size in Brassicaceae.
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OBJECTIVE
Brassicaceae, with nearly 340 genera and more than 3350 species, anchors the low range of angiosperm genome sizes. The relatively narrow range of DNA content (0.16 pg < 1C < 1.95 pg) was maintained in spite of extensive chromosomal change. The aim of this study was to erect a cytological
Understanding Brassicaceae evolution through ancestral genome reconstruction.
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BACKGROUND
Brassicaceae is a family of green plants of high scientific and economic interest, including thale cress (Arabidopsis thaliana), cruciferous vegetables (cabbages) and rapeseed.
RESULTS
We reconstruct an evolutionary framework of Brassicaceae composed of high-resolution ancestral
Analysis of aquaporins in Brassicaceae species reveals high-level of conservation and dynamic role against biotic and abiotic stress in canola.
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Aquaporins (AQPs) are of vital importance in the cellular transport system of all living organisms. In this study, genome-wide identification, distribution, and characterization of AQPs were determined in Arabidopsis lyrata, Capsella grandiflora, C. rubella, Eutrema salsugineum, Brassica rapa, B.
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