title: Glycinebetaine and abiotic stress tolerance in plants.
abstract: The accumulation of osmolytes like glycinebetaine (GB) in cell is known to protect organisms against abiotic stresses via osmoregulation or osmoprotection. Transgenic plants engineered to produce GB accumulate very low concentration of GB, which might not be sufficient for osmoregulation. Therefore, other roles of GB like cellular macromolecule protection and ROS detoxification have been suggested as mechanisms responsible for abiotic stress tolerance in transgenic plants. In addition, GB influences expression of several endogenous genes in transgenic plants. The new insights gained about the mechanism of stress tolerance in GB accumulating transgenic plants are discussed.
authors: National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, India. jitender@nipgr.res.in
authors: Jitender
authors: J
authors: Giri
mesh_terms: D001622:Betaine / Q000378:metabolism*; D018506:Gene Expression Regulation, Plant; D018521:Plant Physiological Phenomena; D010944:Plants / Q000235:genetics / Q000378:metabolism*; D030821:Plants, Genetically Modified / Q000235:genetics / Q000378:metabolism / Q000502:physiology; D017382:Reactive Oxygen Species / Q000378:metabolism; D013312:Stress, Physiological
chemical_list: D017382:Reactive Oxygen Species; D001622:Betaine