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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References

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The Vegetative Morphology, Habitat Preference and Water Balance Mechanisms of the Bromeliad Tillandsia ionantha Planch

TLDR
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.

Unusual Water Relations in the CAM Atmospheric Epiphyte Tillandsia usneoides L. (Bromeliaceae)

TLDR
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.

Leaf Anatomy and CO2 Recycling during Crassulacean Acid Metabolism in Twelve Epiphytic Species of Tillandsia (Bromeliaceae)

TLDR
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TLDR
Overall, leaf water relations and gas exchange in the bromeliads were strongly affected both by short-term changes in water availability and by longer-term climatic differences in the various regions of the island.

Carbon balance during CAM: an assessment of respiratory CO2 recycling in the epiphytic bromeliads Aechmea nudicaulis and Aechmea fendleri

TLDR
It is indicated that CAM as a CO2 concentrating mechanism regulates both water-use efficiency and plant carbon balance in these epiphytes, in response to PAR and night temperature.

Diel Patterns of Water Potential Components for the Crassulacean Acid Metabolism Plant Opuntia ficus-indica when Well-Watered or Droughted.

TLDR
Under well-watered conditions, chlorenchyma acidity in cladodes of Opuntia ficus-indica increased substantially at night, fully accounting for the 0.26-megapascal nocturnal increase in osmotic pressure in the outer 2 millimeters, in agreement with predictions based on electric-circuit analog models for Crassulacean acid metabolism plants.

Comparative ecophysiology of CAM and C3 bromeliads. III. Environmental influences on CO2 assimilation and transpiration

TLDR
It appears that recycling of respired CO2 by CAM bromeliads and efficient use of water in all phases of CO2 uptake are physiological adaptations of bromliads to arid microclimates in the humid tropics.

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TLDR
The observed volume preservation of the chlorenchyma stabilized photosynthesis of Peperomia magnoliaefolia (Jac) leaves, which was less inhibited by a given decrease of the relative water content of the whole leaves than in nonsucculent leaves.

Differences in water relations parameters for the chlorenchyma and the parenchyma of Opuntia ficus-indica under wet versus dry conditions

TLDR
Polymerisation of sugars, large elastic cells in the water-storage parenchyma and mucilage with its high water-holding capacity helped maintain a positive turgor in the photosynthetic tissue, even after 4 months of drought.

Seasonal Patterns of Acid Metabolism and Gas Exchange in Opuntia basilaris.

TLDR
The rapid response to a midsummer rainfall emphasizes the importance of plant water potential as a parameter controlling over-all metabolic activity and significantly influenced the efficiency of water use and carbon dioxide assimilation.