Physiological and Anatomical Responses to Water Deficits in the Cam Epiphyte Tillandsia ionantha (Bromeliaceae)

@article{Nowak1997PhysiologicalAA,
  title={Physiological and Anatomical Responses to Water Deficits in the Cam Epiphyte Tillandsia ionantha (Bromeliaceae)},
  author={Edwin J. Nowak and Craig Edwin Martin},
  journal={International Journal of Plant Sciences},
  year={1997},
  volume={158},
  pages={818 - 826}
}
  • E. Nowak, C. Martin
  • Published 1 November 1997
  • Environmental Science
  • International Journal of Plant Sciences
Although physiological responses to drought have been examined in several species of epiphytic bromeliads, few have included a comprehensive methodological approach to the study of the carbon and water relations of a single species undergoing drought stress. Thus, physiological and anatomical responses to an imposed drought treatment were examined in the atmospheric Crassulacean acid metabolism (CAM) epiphyte Tillandsia ionantha. From 0 through 20 d without water, nocturnal malic acid… 

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  • P. Nobel
  • Environmental Science
    Annals of botany
  • 2006
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Adaptations which permit this plant to succeed in dry, exposed habitats are a capacity for water uptake through foliar trichomes, the capacity to resist rapid drying at low humidities, and the ability to endure extreme desiccation without incurring irreversible impairment of its metabolism.

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It is hypothesized that the unusual nature of the water relations of T. usneoides is attributable to the interactions between two "pools" of water and the external atmosphere, and the dense indumentum of trichomes obscuring the surface of this epiphyte comprises one pool and is most likely responsible for rapid hydrationEarly in the night and dehydration early in the day.

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