title: Recent advances in polyamine metabolism and abiotic stress tolerance.
abstract: Global warming is an alarming problem in agriculture and its effect on yield loss has been estimated to be five per cent for every degree centigrade rise in temperature. Plants exhibit multiple mechanisms like optimizing signaling pathway, involvement of secondary messengers, production of biomolecules specifically in response to stress, modulation of various metabolic networks in accordance with stress, and so forth, in order to overcome abiotic stress factors. Many structural genes and networks of pathway were identified and reported in plant systems for abiotic stress tolerance. One such crucial metabolic pathway that is involved in normal physiological function and also gets modulated during stress to impart tolerance is polyamine metabolic pathway. Besides the role of structural genes, it is also important to know the mechanism by which these structural genes are regulated during stress. Present review highlights polyamine biosynthesis, catabolism, and its role in abiotic stress tolerance with special reference to plant systems. Additionally, a system based approach is discussed as a potential strategy to dissect the existing variation in crop species in unraveling the interacting regulatory components/genetic determinants related to PAs mediated abiotic stress tolerance.
authors.affiliation: Division of Genomic Resources, National Bureau of Plant Genetic Resources, New Delhi 110012, India.
authors.forename: Parimalan
authors.initials: P
authors.lastname: Rangan
authors.affiliation: Division of Genomic Resources, National Bureau of Plant Genetic Resources, New Delhi 110012, India.
authors.forename: Rajkumar
authors.initials: R
authors.lastname: Subramani
authors.affiliation: Division of Genomic Resources, National Bureau of Plant Genetic Resources, New Delhi 110012, India.
authors.forename: Rajesh
authors.identifier: 0000-0001-7826-0193
authors.initials: R
authors.lastname: Kumar
authors.affiliation: Division of Genomic Resources, National Bureau of Plant Genetic Resources, New Delhi 110012, India.
authors.forename: Amit Kumar
authors.initials: AK
authors.lastname: Singh
authors.affiliation: Division of Genomic Resources, National Bureau of Plant Genetic Resources, New Delhi 110012, India.
authors.forename: Rakesh
authors.identifier: 0000-0003-1643-3807
authors.initials: R
authors.lastname: Singh
mesh_terms: D015317:Biogenic Polyamines / Q000096:biosynthesis*; D018556:Crops, Agricultural / Q000235:genetics* / Q000378:metabolism*; D013312:Stress, Physiological / Q000502:physiology*
chemical_list: D015317:Biogenic Polyamines