In cotton and cereals production systems, the most important cause of soil fertility degradation is the inappropriate crop residues management. In a long-term experiment carried out from 1982 to 2012, the effects of crop residues management (CRM) during 30 years on soil chemical properties and crops yields were evaluated in a cotton-cereals rotation. The experimental design was nonrandomized bl...

The objective of this study is to evaluate the stability activated sludge (AS) in treatment kraft pulp mill effluent exposed black liquor shock, as well effect its exposure on morphology Daphnia magna and DNA damage through mutagenicity genotoxicity response Salmonella typhimurium. To end, we applied doses 2-, 4-, 10-, 30-mL liquor/L influent—shock 1 (S1), shock 2 (S2), 3 (S3), 4 (S4), respecti...

Cropping systems in farmland areas of Iran are characterized by continuous cultivation of crops with consumption of chemical fertilizers leading to serious soil erosion and fertility decline. Information regarding the simultaneous evaluation of crop rotation and fertilization on the canola traits is not available. Therefore, an experiment was conducted during 2007 2010. Experimental designs wer...

We have studied the glycosylation of Shaker K+ channel protein made in two expression systems: an insect cell culture line and amphibian oocytes. In both systems, two potential sites for N-linked glycosylation were modified. The modified sites were located between the first and second putative transmembrane segments, S1 and S2. Although the same sites appeared to be glycosylated in both systems...

Polyamine transport activities have been described in diverse multicellular systems, but their bioenergetic mechanisms and molecular identity remain unclear. In the present paper, we describe a high-affinity spermine/spermidine transport activity expressed in Drosophila S2 cells. Ion-replacement experiments indicate that polyamine uptake across the cell membrane is Na+-, K+-, Cl-- and Ca2+-inde...

One of the most important properties soil is its fertility, which formed in process formation and characterized by totality all indicators. Restoration fertility preservation should be a priority task modern agriculture, as it one reserves for increasing production agricultural products. The purpose research was to determine dependence sunflower productivity on physico-chemical agrochemical par...

Excessive gibberellin (GA) signalling, mediated through the DELLA proteins, has a negative impact on plant fertility. Loss of DELLA activity in the monocot rice (Oryza sativa) causes complete male sterility, but not in the dicot model Arabidopsis (Arabidopsis thaliana) ecotype Landsberg erecta (Ler), in which DELLA function has been studied most extensively, leading to the assumption that DELLA...