As seed dormancy is released within a seed population, both the rate and percentage of germination increase progressively with increasing dose of a dormancy-breaking treatment or condition. Population-based models can account for this behaviour on the basis of shifting response thresholds as dormancy is alleviated. In particular, hydrothermal time analysis of germination sensitivity to water po...

The interaction of sugar with ABA plays an important role in many aspects of plant growth and development. Although glucose is reported to act as a signal molecular to promote abscisic acid (ABA) biosynthesis, whether sucrose can also serve as a signal molecule involved in ABA biosynthesis is yet unclear. Here, we showed that soluble sugars, especially sucrose, could accelerate strawberry fruit...

most plants encounter stress such as drought and salinity that adversely affect growth, development and crop productivity. the expression of the gene glutathione-s-transferases (gst) extends throughout various protective mechanisms in plants and allows them to adapt to unfavorable environmental conditions. gstf1 (the first phi gstfs class) gene expression patterns in the wheat cultivars mahuti ...

Barley (Hordeum vulgare L.) seeds (grains) exhibit dormancy at maturity that is largely due to the presence of the glumellae (hulls) that reduce the availability of oxygen (O2) to the embryo. In addition, abscisic acid (ABA) and gibberellins (GAS) interact with O2 to regulate barley seed dormancy. A population-based threshold model was applied to quantify the sensitivities of seeds and excised ...

The impact of water deficit on berry quality has been extensively investigated during the last decades. Nonetheless, there is a scarcity of knowledge on the performance of varieties exposed to a combination of high temperatures/water stress during the growing season and under vineyard conditions. The objective of this research was to investigate the effects of two irrigation regimes, sustained ...

Abscisic acid (ABA) is a growth regulatory substance that plays an important role in various processes the cell, such as plant adaptation to environmental threats, seed development, dormancy, budding, and fruit ripening. Another of abscisic increased antioxidant capacity, total phenol content, carotenoid, anthocyanin content. The content bioactive compounds antioxidants parameter quality can de...

Most plants encounter stress such as drought and salinity that adversely affect growth, development and crop productivity. The expression of the gene glutathione-s-transferases (GST) extends throughout various protective mechanisms in plants and allows them to adapt to unfavorable environmental conditions. GSTF1 (the first phi GSTFs class) gene expression patterns in the wheat cultivars Mahuti ...

The N-end rule pathway targets protein degradation through the identity of the amino-terminal residue of specific protein substrates. Two components of this pathway in Arabidopsis thaliana, PROTEOLYSIS6 (PRT6) and arginyl-tRNA:protein arginyltransferase (ATE), were shown to regulate seed after-ripening, seedling sugar sensitivity, seedling lipid breakdown, and abscisic acid (ABA) sensitivity of...

The plant hormone ABA is involved in a number of important physiological and developmental processes including the response of vegetative tissues to osmotic stress and fruit ripening (Davies and Mansfield, 1983). We report here the main structural features of a gene termed Asr2 (Table I), homologous to Asrl (standing for ABA, stress, and ripening), whose cDNA has been previously characterized (...

The function of ASR (ABA [abscisic acid]-, stress-, and ripening-induced) proteins remains unknown. A grape ASR, VvMSA, was isolated by means of a yeast one-hybrid approach using as a target the proximal promoter of a grape putative monosaccharide transporter (VvHT1). This promoter contains two sugar boxes, and its activity is induced by sucrose and glucose. VvMSA and VvHT1 share similar patter...