Evolution of chromosome complements can be resolved by genome sequencing, comparative genetic mapping, and comparative chromosome painting. Previously, comparison of genetic maps and gene-based phylogenies suggested that the karyotypes of Arabidopsis thaliana (n = 5) and of related species with six or seven chromosome pairs were derived from an ancestral karyotype with eight chromosome pairs. T...

Abstract Plants synthesize specialized metabolites to facilitate environmental and ecological interactions. During evolution, plants diversified in their potential these metabolites. Quantitative differences metabolite levels of natural Arabidopsis (Arabidopsis thaliana) accessions can be employed unravel the genetic basis for metabolic traits using genome-wide association studies (GWAS). Here,...

Since the sequencing of the nuclear genome of Arabidopsis thaliana ten years ago, various large-scale analyses of gene function have been performed in this model species. In particular, the availability of collections of lines harbouring random T-DNA or transposon insertions, which include mutants for almost all of the ~27,000 A. thaliana genes, has been crucial for the success of forward and r...

Following the identification of the male (S-locus Cysteine Rich/S-locus Protein 11) and female (S Receptor kinase [SRK]) factors controlling self-incompatibility in the Brassicaceae, research in this field has focused on understanding the nature of the cellular responses activated by these regulators. We previously identified the ARM Repeat Containing1 (ARC1) E3 ligase as a component of the SRK...

Small RNAs, including microRNAs (miRNAs), small interfering RNAs (siRNAs), and trans-acting siRNAs (tasiRNAs), control gene expression and epigenetic regulation. Although the roles of miRNAs and siRNAs have been extensively studied, their expression diversity and evolution in closely related species and interspecific hybrids are poorly understood. Here, we show comprehensive analyses of miRNA e...

Abstract In plants high affinity transport proteins mediate the essential of ammonium across membranes. Arabidopsis thaliana six these AMmonium Transporters (AMTs) are encoded by genome. All them show a unique expression pattern. While most AMTs highly expressed in root, AtAMT1;4 is limited to pollen grains and tube. Here, we addressed characteristics heterologous Xenopus laevis oocytes system....

A combination of forward and reverse genetic approaches together with transcriptome-scale gene expression analyses have allowed the elaboration of a model for the Arabidopsis thaliana circadian clock. The working model largely conforms to the expected negative feedback loop model that has emerged from studies in other model systems. Although a core loop has emerged, it is clear that additional ...

Complex I has a unique structure in plants and includes extra subunits. Here, we present a novel study to define its protein constituents. Mitochondria were isolated from Arabidopsis thaliana cell cultures, leaves, and roots. Subunits of complex I were resolved by 3D blue-native (BN)/SDS/SDS-PAGE and identified by mass spectrometry. Overall, 55 distinct proteins were found, seven of which occur...

AtALMT1 (Arabidopsis thaliana ALuminum activated Malate Transporter 1) encodes an Arabidopsis thaliana malate transporter that has a pleiotropic role in Arabidopsis stress tolerance. Malate released through AtALMT1 protects the root tip from Al rhizotoxicity, and recruits beneficial rhizobacteria that induce plant immunity. To examine whether the overexpression of AtALMT1 can improve these trai...

Hyperaccumulation of heavy metals is substantial in some hyperaccumulators; however, few studies have been conducted to reveal the effect light irradiation on variations representative amino acids and photosynthetic indices, which can represent antioxidant capacity plants during phytoremediation. The physiochemical responses Arabidopsis thaliana Cd stress were compared six treatments. results e...