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Title of Journal: Photosynth Res

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Abbravation: Photosynthesis Research

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Springer Netherlands

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DOI

10.1007/bf00542126

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ISSN

1573-5079

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Crassulacean acid metabolism CAM in an epiphytic

Authors: Edward W J Tsen Joseph A M Holtum
Publish Date: 2012/03/23
Volume: 113, Issue: 1-3, Pages: 311-320
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Abstract

This study demonstrates unequivocally the presence of crassulacean acid metabolism CAM in a species of the Rubiaceae the fourth largest angiosperm plant family The tropical Australian endemic epiphytic antplant Myrmecodia beccarii Hookf exhibits net CO2 uptake in the dark and a concomitant accumulation of titratable acidity in plants in the field and in cultivation Plants growing near Cardwell in a north Queensland coastal seasonally dry forest of Melaleuca viridiflora Sol ex Gaertn accumulated ~50  of their 24 h carbon gain in the dark during the warm wet season During the transition from the wet season to the dry season 24 h carbon gain was reduced whilst the proportion of carbon accumulated during the dark increased By mid dry season many plants exhibited zero net carbon uptake over 24 h but CO2 uptake in the dark was observed in some plants following localised rainfall In a shadehouse experiment droughted plants in which CO2 uptake in the light was absent and dark CO2 uptake was reduced were able to return to relatively high rates of CO2 uptake in the light and dark within 12 h of rewateringEWJT was supported by an Internal Research Allocation grant from the School of Marine and Tropical Biology James Cook University We acknowledge invaluable assistance in the field by Dr AR Field Melanie Adams Leesa Baker Cassandra Denne David Duchene Trisha Knavel Katja Reichel Marine Sonie and Saul Walker Particular thanks to Janelle Price who held the umbrella at 2 am during gasexchange measurements in the wet season JAMH acknowledges with gratitude 36 years of mentorship by Professor CB Osmond who courageously agreed to be his PhD supervisor in 1976


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  1. Adaptation of photosystem II to high and low light in wild-type and triazine-resistant Canola plants: analysis by a fluorescence induction algorithm
  2. Significance of molecular crowding in grana membranes of higher plants for light harvesting by photosystem II
  3. Structures and functions of the extrinsic proteins of photosystem II from different species
  4. The diversity and complexity of the cyanobacterial thioredoxin systems
  5. Reconstituted CP29: multicomponent fluorescence decay from an optically homogeneous sample
  6. A photoacoustic method for rapid assessment of temperature effects on photosynthesis
  7. Photosynthesis-related quantities for education and modeling
  8. Temperature responses of the Rubisco maximum carboxylase activity across domains of life: phylogenetic signals, trade-offs, and importance for carbon gain
  9. H-transfers in Photosystem II: what can we learn from recent lessons in the enzyme community?
  10. Molecular signatures for the main phyla of photosynthetic bacteria and their subgroups
  11. Optimization of photosynthesis by multiple metabolic pathways involving interorganelle interactions: resource sharing and ROS maintenance as the bases
  12. Production of reactive oxygen species in decoupled, Ca 2+ -depleted PSII and their use in assigning a function to chloride on both sides of PSII
  13. Tracking the molecular evolution of photosynthesis through characterization of atomic contents of the photosynthetic units
  14. What governs the reaction center excitation wavelength of photosystems I and II?
  15. Fluorescence spectroscopy of reconstituted peridinin–chlorophyll–protein complexes
  16. Wide-field photon counting fluorescence lifetime imaging microscopy: application to photosynthesizing systems
  17. Photosynthetic carbon acquisition in Sargassum henslowianum (Fucales, Phaeophyta), with special reference to the comparison between the vegetative and reproductive tissues
  18. Photosynthesis Web resources
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  20. Michael Cusanovich: a man of many talents and interests
  21. Phylogeny and taxonomy of Chlorobiaceae
  22. The biological and geological contingencies for the rise of oxygen on Earth
  23. The photoenzymatic cycle of NADPH: protochlorophyllide oxidoreductase in primary bean leaves ( Phaseolus vulgaris ) during the first days of photoperiodic growth
  24. Carbon allocation and element composition in four Chlamydomonas mutants defective in genes related to the CO 2 concentrating mechanism
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  26. Iron–sulfur cluster biosynthesis in photosynthetic organisms
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