Drought stress is a major cause of postproduction decline in bedding plants. The plant hormone abscisic acid (ABA) regulates drought stress responses by mediating stomatal closure, thereby reducing transpirational water loss. Exogenous ABA applications delay wilting and allow plants to survive short periods of severe drought. The effectiveness of the ABA biochemical, s-ABA (ConTegoä; Valent BioSciences Corp., Libertyville, IL), at delaying wilting and extending shelf life during drought stress was evaluated in six bedding plant species. Spray and drench applications of 0 or 500 mgÁL -1 s-ABA were applied to Impatiens walleriana (impatiens), Pelargonium ·hortorum (seed geranium), Petunia ·hybrida (petunia), Tagetes patula (marigold), Salvia splendens (salvia), and Viola ·wittrockiana (pansy). Water was subsequently withheld and wilting symptoms were compared between treated and control plants. s-ABA applications delayed wilting in all crops by 1.7 to 4.3 days. Leaf chlorosis was observed after s-ABA application in drought-stressed seed geraniums, marigolds, and pansies. In seed geraniums and marigolds, the drought stress itself resulted in leaf chlorosis that was equivalent to or more severe than the s-ABA application alone. In pansies, s-ABA applications induced leaf chlorosis that was more severe than the drought treatment. Overall, s-ABA was consistently effective at reducing water loss and extending shelf life for all species treated. Applications of s-ABA to bedding plants before shipping and retailing would allow plants to maintain marketability even under severe drought stress conditions.
Previous unsubstantiated reports by children and adolescents suggest tacit parental acceptance of their gambling behaviour. A Canadian national survey of parents with teens between the ages of 13 and 18 revealed that in general parents view adolescent gambling as a relatively unimportant issue compared to other potentially risky behaviours. Parental attitudes toward youth gambling, their knowledge and awareness of youth gambling prevention programs, and their gambling behaviours with their children suggest that gambling has become normalized, with few parents being aware of the potential seriousness of youth gambling. The results are interpreted with the aim of improving harm minimization and prevention initiatives.
Intraoperative vascular evaluation with indocyanine green fluorescence imaging and Doppler examination of the gastric conduit used to assist reconstruction after esophagectomy allows for enhanced construction of the conduit that maximizes blood supply to the anastomosis. This change in practice was associated with a significant reduction in anastomotic leak rate.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.