Cell-wall invertase genes are spatially and temporally regulated in several plant species, including Daucus carota L., Lycopersicon esculentum L. and Solanum tuberosum L. However, few studies of cell-wall invertase genes of trees have been conducted, despite the importance of trees as a source of lignocellulosic biopolymers. We identified three putative cell-wall invertase genes in hybrid popla...

Quantitative and qualitative features are presented for 13 collections of 8 species of Ascarina. Wood anatomy is maximally primitive in most respects; moderate exception occurs in the imperforate tracheary elements, which range from tracheidlike (A. solmsiana) to fiber-tracheids (septate in two species). Perforation plates are scalariform, average more than 100 bars per plate, and have bordered...

Major intrinsic proteins (MIPs) facilitate the passive transport of small polar molecules across membranes. MIPs constitute a very old family of proteins and different forms have been found in all kinds of living organisms, including bacteria, fungi, animals, and plants. In the genomic sequence of Arabidopsis, we have identified 35 different MIP-encoding genes. Based on sequence similarity, the...

The family Leguminosae includes more than 12,000 species in about 500 genera that are widely d.L<:tributed from the tropics to the arctic regions. Although abundant in the temperate zones, legumes are especially numerous in the tropics. Ivlan has cultivated some members of this family since remote antiquity and few families of dicotyledons are of greater importance than the legumes. Nonetheless...

In this study, gene encoding Aspartate aminotransferase was cloned from Arabidopsis thaliana by RT-PCR, named F23N and its bioinformatics analysis was performed. It was found that there is one pyridoxal-phosphate attachment site at 250-270 (SYAKnmGLyGERIG) and other domains, furthermore, the transmembrane helices was not found in F23N, suggesting that F23N encoding product might not belong to m...

Rapid advances in DNA sequencing technologies have resulted in the accumulation of large data sets in the public domain, facilitating comparative studies to provide novel insights into the evolution of life. Phylogenetic studies across the eukaryotic taxa have been reported but on the basis of a limited number of genes. Here we present a genome-wide analysis across different plant, fungal, prot...

Aim Alpine plant species’ distributions are thought to have been shifting higher elevations in response climate change. By moving upslope, species can occupy cooler and more suitable environments as change warms their current ranges. Despite evidence of upslope migration the northern hemisphere, there is limited for elevational shifts southern hemisphere plants. Our study aimed determine if alp...

boraginaceae family is known as a medicinal plant classified in dicotyledons.  it is originated from asia (middle east). the aim of this study was to evaluate ingredient between 4 species of boraginaceae family based on physiological & phytochemical traits as well as seed fatty acid contents.  4 species (e. russicum, e. italicum, e. amoenum, and b. officinalis ) were evaluated carefully. all se...

Silicon is the second most abundant element after oxygen in the earth's crust, and most soils contain considerable quantities of the element (Savant et al, 1997). However, some soils contain litde plant-available silicon in their native state, and repeated cropping can reduce the levels of plant-available silicon to the point that supplemental silicon fertilization is required for maximum produ...