Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53989#.VN23TyzQrzE Author(s) Dimitra A. Loka , Derrick M. Oosterhuis , Cristiane Pilon Affiliation(s) Altheimer Laboratory, Department of Crop, Soil and Environmental Sciences, University of Arkansas, Fayetteville, AR, USA . ABSTRACT Polyamines, putrescine (PUT), spermidine (SPD) and spermine (SPM) are implicated in plants’ responses under conditions of abiotic stress. Previous research in other crops has indicated that polyamines and changes in their concentrations are associated with drought tolerance under conditions of water-deficit stress; however, no information exists on cotton (Gossypium hirsutum L.). Growth chamber experiments were conducted with two cotton cultivars differing in drought tolerance, ST5288B2F (drought-sensitive) and Siokra L23 (drought-tolerant) in order to investigate the distribution of free polyamines, the effect of water-defic...
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