BIOC40H3 Lecture Notes - Physcomitrella Patens, Stomatal Conductance, New England Biolabs
22 Apr 2014
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Functional characterization of drought-responsive aquaporins in populus balsamifera and populus simonii balsamifera clones with different drought resistance strategies. Cookeb, francis yeha and janusz j. zwiazeka adepartment of renewable resources, university of alberta, edmonton, alberta, canada t6e 2e3 bdepartment of biological sciences, university of alberta, edmonton, alberta, canada t6g 2e9. Received 23 april 2010; revised 20 july 2010 doi:10. 1111/j. 1399-3054. 2010. 01405. x. We have characterized poplar aquaporins (aqps) to investigate their possible functions in differential drought responses of populusbalsamiferaand populus simonii balsamiferaleaves. Plants were exposed to mild and severe levels of drought stress and to drought stress recovery treatment, and their responses were compared with well-watered controls. P. simonii balsamifera used drought avoidance as the main drought resistance strategy, and rapidly reduced stomatal conductance in response to stress. This strategy is correlated with growth rate reductions. Eleven aqps were transcriptionally pro led in leaves from these experiments and ve were functionally characterized for water channel activity.
