Thiamin and thiamin pyrophosphate (TPP) are well known for their important roles in human nutrition and enzyme catalysis. In this work, we present new evidence for an additional role of these compounds in the protection of cells against oxidative damage. Arabidopsis (Arabidopsis thaliana) plants subjected to abiotic stress conditions, such as high light, cold, osmotic, salinity, and oxidative t...

Boron toxicity is a world-wide problem for crops, yet we have limited understanding of the genetic responses and adaptive mechanisms to this stress in plants. We employed cross-species comparison between boron stress-sensitive Arabidopsis thaliana its stress-tolerant extremophyte relative Schrenkiella parvula, multi-omics approach integrating genomics, transcriptomics, metabolomics ionomics ass...

Failure of one parent's chromosomes to organize nucleoli in an interspecific hybrid is an epigenetic phenomenon known as nucleolar dominance. Selective gene silencing on a scale of millions of bp is known to be involved, but the full extent to which nucleolus organizer region (NOR)-bearing chromosomes are inactivated beyond the NORs is unknown. Aided by genome sequence data for Arabidopsis thal...

Repetitive sequences present a challenge for genome sequence assembly, and highly similar segmental duplications may disappear from assembled genome sequences. Having found a surprising lack of observable phenotypic deviations and non-Mendelian segregation in Arabidopsis thaliana mutants in SEC10, a gene encoding a core subunit of the exocyst tethering complex, we examined whether this could be...

Abstract Anthocyanin is a type of flavonoid that appears purple in plants. PAP1, PAP2, and MYB113 are the three major R2R3-MYB transcription factors regulate biosynthesis Arabidopsis thaliana . In this study, we found MYB genes anthocyanin accumulation different leaf stages. Under limited nutrient conditions, PAP1 PAP2 were highly induced juvenile leaves. Conversely, was expressed mainly adult ...

Plant regeneration is a self-repair of the plant body in response to adverse conditions or damaged structures, and root allows better adapt its environment by supplementing roots’ structure. Previous research has shown that adventitious roots can be made occur from scratch two ways. Studies simulate through natural allow process broadly divided into three stages: perception early signals, massi...

Plants host at the contact zone with soil a distinctive root-associated bacterial microbiota believed to function in plant nutrition and health. We investigated the diversity of the root microbiota within a phylogenetic framework of hosts: three Arabidopsis thaliana ecotypes along with its sister species Arabidopsis halleri and Arabidopsis lyrata, as well as Cardamine hirsuta, which diverged fr...

Plants like Arabidopsis thaliana are convenient model systems to study fundamental questions related to regulation of the stress transcriptome in response to stress challenges. Microarray results of the Arabidopsis transcriptome indicate that several genes could be upregulated during multiple stresses. High-salinity, drought, and low temperature are three common environmental stress factors tha...

MicroRNAs (miRNAs) play essential roles in plant and animal development, but the cause and effect of miRNA expression divergence between closely related species and in interspecific hybrids or allopolyploids are unknown. Here, we show differential regulation of a miR163-mediated pathway in allotetraploids and their progenitors, Arabidopsis thaliana and Arabidopsis arenosa. miR163 is a recently ...

Allopolyploidy is a significant evolutionary process, resulting in new species with diploid or greater chromosome complements derived from two or more progenitor species. We examined the chromosomal consequences of genomic merger in Arabidopsis suecica, the allotetraploid hybrid of Arabidopsis thaliana and Arabidopsis arenosa. Fluorescence in situ hybridization with centromere, nucleolus organi...