Genetic engineering of glycine betaine biosynthesis to enhance abiotic stress tolerance in plants

Response of proline accumulation in bread wheat (<i>Triticum aestivum</i> L.) under rainfed conditions

“…Frances et al 2006 concluded that accumulation of proline increased under stress and it optimized the grain yield by maintaining leaf water potential Table 1 . In present studies heat and water stress stimulated proline/ osmoprotectant concentration significantly Raza et al, 2007. Khan et al 2009 concluded that under stress proline contents increased significantly which helps in the mainteance of physiological traits and grain yield.…”

“…4 while inverse relationship existed for opossite. The proline metabolism and its accumulation are an imporatnt process to build up tolerance in crops under adverse environmetal conditions Khan et al, 2009 . Similarly, response of crop to multiple stresses is different from signle one therfore, proline production as protectant colud be considered as indicator of defensive mechansim of crop in response to multiple stresses.…”

Response, Tolerance and Adaptation to Abiotic Stress of Olive, Grapevine and Chestnut in the Mediterranean Region: Role of Abscisic Acid, Nitric Oxide and MicroRNAs

“…Plant response to drought stress is quite complex, and is associated with a large number of physiological and biochemical changes. Some of those changes, such as osmotic stress adjustment, ABA accumulation, and root morphology, are known to be controlled by multiple genes (Khan et al, 2009;Lilley et al, 1996). One promising genetic path is the mapping of quantitative trait loci (QTL) that relate performance and yield to abiotic stress factors (Collins et al, 2008).…”

Development of transgenic plants in jatropha with drought tolerance

“…Plant cells exposed to severe osmotic imbalance absorb water ine ciently. Some plant species with extremely high salt tolerance are able to protect themselves by producing a low molecular-weight compound called glycine betaine (reviewed by Khan et al 2009). is compound works as an osmolyte that helps maintain high osmotic pressure in the cells, and thus enabling e cient water absorption even from saline water.…”

“…is compound works as an osmolyte that helps maintain high osmotic pressure in the cells, and thus enabling e cient water absorption even from saline water. Genetically engineered crops with enhanced glycine betaine biosynthesis show improved salt and drought tolerance; some of them also show improved tolerance to low temperatures (Khan et al 2009). ese ndings indicate that these plants can adopt the strategy used by halophytes to survive in drought conditions via the protective nature of glycine betaine.…”