Barley HvPIP2;1 is a plasma membrane aquaporin and its expression was down-regulated after salt stress in barley [Katsuhara et al. (2002) Plant Cell Physiol. 43: 885]. We produced and analyzed transgenic rice plants over-expressing barley HvPIP2;1 in the present study. Over-expression of HvPIP2;1 increased (1) radial hydraulic conductivity of roots (Lp(r)) to 140%, and (2) the mass ratio of sho...

Polysaccharides are promising candidates for manufacturing biocompatible core-shell nanoparticles with potential in vivo use. Superparamagnetic magnetite nanoparticles (MNPs) have prospective application in both diagnosis and therapy, and so developing a novel polysaccharide shell on MNP core is of great challenge. MNPs were prepared by coprecipitation, then the surface of purified MNPs was coa...

The roles of purified Int and Xis proteins of the conjugative transposon Tn 916 in excision of a deletion derivative of the closely related element Tn 1545 were investigated. At a low salt concentration (37.5 mM NaCl), Int alone was able to promote limited excision to produce a covalently closed circular form of the transposon, showing that Tn 916 Int can catalyze both DNA cleavage and strand e...

Plasma membrane H+-ATPase is a major integral membrane protein with a role in various physiological processes including abiotic stress response. To study the effect of NaCl on the expression pattern of a gene encoding the plasma membrane H+-ATPase, an experiment was carried out in a completely random design with three replications. A pair of specific primers was designed based on the sequence o...

Angiotensin II (AngII) helps to regulate overall renal tubular reabsorption of salt and water, yet its effects in the distal nephron have not been well studied. The purpose of these studies was to determine whether AngII stimulates luminal Na(+) transport in the cortical collecting duct (CCD). Intracellular Na(+) concentration ([Na(+)](i)), as a reflection of Na(+) transport across the apical m...

In order to understand the response of Lotus corniculatus to salt stress, ions content and some growth factors were analyzed in three varieties of this plant, namely, Ardebil, Karaj, and Jolfa. Lotus corniculatus plants were exposed to 0, 50, 100, and 150 mM NaCl in hydroponic condition. The amounts of anions (Cl-and NO3-) and cations (K+ and Na+) in leaves as well as shoot and root dry weights...

The impact of salt stress is becoming more prevalent each year, largely due to the effects climate change. Limited availability salt-free water rising concern for hydroponics lettuce production. Despite evidence supporting stress-induced quality losses and physiological changes, studies on romaine salt-stress tolerance are limited. This study examined mechanism underlying sodium chloride (NaCl)...

FOR OSMOREGULATING vertebrates, diffusive water loss is an unavoidable consequence of living in seawater. Marine teleost fish drink seawater to offset this diffusive water loss dictated by the steep osmotic gradient between blood and the surrounding seawater, a water loss occurring mainly across the gills. Imbibed seawater is processed along the gastrointestinal tract by desalinizing the medium...

The present investigation was carried out to evaluate the level of salt toxicity on four novel chickpea genotypes (BG 372, BG 1105, BG 2019 and BG 2024) under in vitro condition for percentage seed germination and morphogenesis. All the four genotypes were exposed to different concentrations (0, 1, 50, 100 and 150 mM) of NaCl in the Murashige & Skoog (MS) medium supplemented with or without ben...