in this study proline content and activity of catalase (cat), and ascorbate peroxidase (apx) and level of lipid peroxidation in terms of malondialdehyde (mda) content were measured in transgenic tobacco (nicotiana tabacum cv. wisconsin), over expressing a δ-1-pyrroline-5-carboxylate synthase (p5cs) gene, and non transgenic plants as control. drought stress was applied using polyethylene glycol ...

Salinity is one of the most destructive environmental challenges for citriculture worldwide, and all climate change scenarios are predicting an increased impact salinity on citrus orchards. Citrus cultivars grown as grafts various rootstocks to provide specific adaptation abiotic stress tolerance major diseases such tristeza virus. To understand rootstock–scion interactions with regard salinity...

Soil alkalization triggers ion toxicity and osmotic alkaline (high pH) stresses in plants, damaging their growth productivity. Therefore, we investigated whether priming with abscisic acid (ABA) increases the tolerance of alfalfa seedlings to stress, then examined underlying molecular mechanisms. Alfalfa were pretreated ABA (10 μM) for 16 h subjected stress using a 15 mM Na2CO3 solution (pH 10....

Iron-sulfur cluster biosynthesis involving the nitrogen fixation (Nif) proteins has been proposed as a general mechanism acting in various organisms. NifU-like protein may play an important role in protecting plants against abiotic and biotic stresses. An iron-sulfur cluster scaffold protein gene, IbNFU1, was isolated from a salt-tolerant sweetpotato (Ipomoea batatas (L.) Lam.) line LM79 in our...

We isolated a rice T-DNA tagging line, in which T-DNA was inserted into the sixth intron of OsP5CS2. This gene encodes for a protein that is highly homologous to 1-pyrroline-5-carboxylate synthetase (P5CS), a proline biosynthesis enzyme. The T-DNA contained the promoterless gus gene, allowing generation of a gene fusion between OsP5CS2 and gus. Therefore, the expression pattern of OsP5CS2 could...

Background and Aims Viticulture will be particularly affected by increasing drought heat waves in the future. It is of interest to find traits that indicate stress before symptoms become apparent. We investigated whether commonly used traits, proline abscisic acid (ABA) biosynthesis, are suitable markers for heat, or combined gene expression key enzymes ABA biosynthesis regulated grapevine leav...