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Functional Plant Biology Functional Plant Biology Society
Plant function and evolutionary biology
FOREWORD

Diversity of CAM plant photosynthesis (crassulacean acid metabolism): a tribute to Barry Osmond

Klaus Winter
+ Author Affiliations
- Author Affiliations

Smithsonian Tropical Research Institute, PO Box 0843-03092, Balboa, Ancón, Republic of Panama. Email: winterk@si.edu

Functional Plant Biology 48(7) iii-ix https://doi.org/10.1071/FPv48n7_FO
Published: 7 June 2021

Abstract

This special issue is a tribute to the Australian plant biologist Professor Charles Barry Osmond – Fellow of the Australian Academy of Sciences, the Royal Society of London, and Leopoldina, the German National Academy of Sciences – and his many contributions to our understanding of the biochemistry and physiological ecology of CAM (crassulacean acid metabolism) photosynthesis. This water-conserving photosynthetic pathway is characterised by nocturnal uptake of atmospheric CO2 and typically enables succulent plants to perform and survive in warm semiarid terrestrial and epiphytic habitats. The idea for this issue is to mark the occasion of Barry’s 80th birthday in 2019. The foreword highlights some of his outstanding contributions and introduces the research papers of the special issue.


References

Adams WW, Smith SD, Osmond CB (1987) Photoinhibition of the CAM succulent Opuntia basilaris growing in Death Valley: evidence from 77K fluorescence and quantum yield. Oecologia 71, 221–228.
Photoinhibition of the CAM succulent Opuntia basilaris growing in Death Valley: evidence from 77K fluorescence and quantum yield.Crossref | GoogleScholarGoogle Scholar |

Avadhani PN, Osmond CB, Tan KK (1971) Crassulacean acid metabolism and the C4 pathway of photosynthesis in succulent plants. In ‘Photosynthesis and photorespiration’. pp. 288–293. (Wiley-Interscience: New York)

Barrera Zambrano VA, Lawson T, Olmos E, Fernández-García N, Borland AM (2014) Leaf anatomical traits which accommodate the facultative engagement of crassulacean acid metabolism in tropical trees of the genus Clusia. Journal of Experimental Botany 65, 3513–3523.
Leaf anatomical traits which accommodate the facultative engagement of crassulacean acid metabolism in tropical trees of the genus Clusia.Crossref | GoogleScholarGoogle Scholar |

Bender MM (1968) Mass spectrometric studies of carbon 13 variations in corn and other grasses. Radiocarbon 10, 468–472.
Mass spectrometric studies of carbon 13 variations in corn and other grasses.Crossref | GoogleScholarGoogle Scholar |

Björkman O (2012) Letter from Olle Björkman. Photosynthesis Research 113, 3–4.
Letter from Olle Björkman.Crossref | GoogleScholarGoogle Scholar |

Björkman O, Demmig B (1987) Photon yield of O2 evolution and chlorophyll fluorescence characteristics at 77K among vascular plants of diverse origins. Planta 170, 489–504.
Photon yield of O2 evolution and chlorophyll fluorescence characteristics at 77K among vascular plants of diverse origins.Crossref | GoogleScholarGoogle Scholar |

Black CC, Osmond B (2003) Crassulacean acid metabolism photosynthesis: ‘working the night shift’. Photosynthesis Research 76, 329–341.
Crassulacean acid metabolism photosynthesis: ‘working the night shift’.Crossref | GoogleScholarGoogle Scholar |

Borland AM, Griffiths H, Hartwell J, Smith JAC (2009) Exploiting the potential of plants with crassulacean acid metabolism for bioenergy production on marginal lands. Journal of Experimental Botany 60, 2879–2896.
Exploiting the potential of plants with crassulacean acid metabolism for bioenergy production on marginal lands.Crossref | GoogleScholarGoogle Scholar |

Bradbeer JW, Ranson SL, Stiller ML (1958) Malate synthesis in crassulacean leaves. I. The distribution of 14C in malate in leaves exposed to 14CO2 in the dark. Plant Physiology 33, 66–70.
Malate synthesis in crassulacean leaves. I. The distribution of 14C in malate in leaves exposed to 14CO2 in the dark.Crossref | GoogleScholarGoogle Scholar |

Crayn DM, Winter K, Schulte K, Smith JAC (2015) Photosynthetic pathways in Bromeliaceae: phylogenetic and ecological significance of CAM and C3 based on carbon isotope ratios for 1893 species. Botanical Journal of the Linnean Society 178, 169–221.
Photosynthetic pathways in Bromeliaceae: phylogenetic and ecological significance of CAM and C3 based on carbon isotope ratios for 1893 species.Crossref | GoogleScholarGoogle Scholar |

Ferrari RC, Bittencourt PP, Rodrigues MA, Moreno-Villena JJ, Alves FRR, Gastaldi VD, Boxall SF, Dever LV, Demarco D, Andrade SCS, Edwards EJ, Hartwell J, Freschi L (2020) C4 and crassulacean acid metabolism within a single leaf: deciphering key components behind a rare photosynthetic adaptation. New Phytologist 225, 1699–1714.
C4 and crassulacean acid metabolism within a single leaf: deciphering key components behind a rare photosynthetic adaptation.Crossref | GoogleScholarGoogle Scholar |

Ferrari RC, Bittencourt PP, Nagumo PY, Oliveira WS, Rodrigues MA, Hartwell J, Freschi L (2021) Developing Portulaca oleracea as a model system for functional genomics analysis of C4/CAM photosynthesis. Functional Plant Biology 48, 666–682.
Developing Portulaca oleracea as a model system for functional genomics analysis of C4/CAM photosynthesis.Crossref | GoogleScholarGoogle Scholar |

Hatch MD, Osmond CB, Slatyer RO (Eds) (1971) ‘Photosynthesis and photorespiration.’ (Wiley-Interscience: New York)

Holtum JAM, Osmond CB (1981) The gluconeogenic metabolism of pyruvate during deacidification in plants with crassulacean acid metabolism. Australian Journal of Plant Physiology 8, 31–44.

Holtum JAM, O’Leary MH, Osmond CB (1983) Effect of varying CO2 partial pressure on photosynthesis and on carbon isotope composition of carbon-4 of malate from the crassulacean acid metabolism plant Kalanchoë daigremontiana Hamet et Perr. Plant Physiology 71, 602–609.
Effect of varying CO2 partial pressure on photosynthesis and on carbon isotope composition of carbon-4 of malate from the crassulacean acid metabolism plant Kalanchoë daigremontiana Hamet et Perr.Crossref | GoogleScholarGoogle Scholar |

Holtum JAM, Winter K, Osmond CB (2015) Crassulacean acid metabolism (CAM). In ‘Plants in action’, 2nd edn. Chapter 2, 30–41. (Australian Society of Plant Scientists). Available at plantsinaction.science.uq.edu.au

Holtum JAM, Hancock LP, Edwards EJ, Crisp MD, Crayn DM, Sage R, Winter K (2016) Australia lacks stem succulents but is it depauperate in plants with crassulacean acid metabolism (CAM)? Current Opinion in Plant Biology 31, 109–117.
Australia lacks stem succulents but is it depauperate in plants with crassulacean acid metabolism (CAM)?Crossref | GoogleScholarGoogle Scholar |

Holtum JAM, Hancock LP, Edwards EJ, Winter K (2021) CAM photosynthesis in desert blooming Cistanthe of the Atacama, Chile. Functional Plant Biology 48, 691–702.
CAM photosynthesis in desert blooming Cistanthe of the Atacama, Chile.Crossref | GoogleScholarGoogle Scholar |

Horn JW, Xi Z, Riina R, Peirson JA, Yang Y, Dorsey BL, Berry PE, Davis CC, Wurdack KJ (2014) Evolutionary bursts in Euphorbia (Euphorbiaceae) are linked with photosynthetic pathway. Evolution 68, 3485–3504.
Evolutionary bursts in Euphorbia (Euphorbiaceae) are linked with photosynthetic pathway.Crossref | GoogleScholarGoogle Scholar |

Keeley JE, Osmond CB, Raven JA (1984) Stylites, a vascular land plant without stomata absorbs CO2 via its roots. Nature 310, 694–695.
Stylites, a vascular land plant without stomata absorbs CO2 via its roots.Crossref | GoogleScholarGoogle Scholar |

Kluge M, Osmond CB (1971) Pyruvate Pi dikinase in crassulacean acid metabolism. Naturwissenschaften 58, 414–415.
Pyruvate Pi dikinase in crassulacean acid metabolism.Crossref | GoogleScholarGoogle Scholar |

Kluge M, Osmond CB (1972) Studies on phosphoenolpyruvate carboxylase and other enzymes of crassulacean acid metabolism of Bryophyllum tubiflorum and Sedum praealtum. Zeitschrift für Pflanzenphysiologie 66, 97–105.
Studies on phosphoenolpyruvate carboxylase and other enzymes of crassulacean acid metabolism of Bryophyllum tubiflorum and Sedum praealtum.Crossref | GoogleScholarGoogle Scholar |

Koch K, Kennedy RA (1980) Characteristics of crassulacean acid metabolism in the succulent C4 dicot, Portulaca oleracea L. Plant Physiology 65, 193–197.
Characteristics of crassulacean acid metabolism in the succulent C4 dicot, Portulaca oleracea L.Crossref | GoogleScholarGoogle Scholar |

Laetsch WM (1971) Chloroplast structural relationships in leaves of C4 plants. In ‘Photosynthesis and photorespiration’. pp. 323–349. (Wiley-Interscience: New York)

Leverett A, Castaño NH, Ferguson K, Winter K, Borland AM (2021) Crassulacean acid metabolism (CAM) supersedes the turgor loss point (TLP) as an important adaptation across a precipitation gradient, in the genus Clusia. Functional Plant Biology 48, 703–715.
Crassulacean acid metabolism (CAM) supersedes the turgor loss point (TLP) as an important adaptation across a precipitation gradient, in the genus Clusia.Crossref | GoogleScholarGoogle Scholar |

Lüttge U (2006) Photosynthetic flexibility and ecophysiological plasticity: questions and lessons from Clusia, the only CAM tree, in the neotropics. New Phytologist 171, 7–25.
Photosynthetic flexibility and ecophysiological plasticity: questions and lessons from Clusia, the only CAM tree, in the neotropics.Crossref | GoogleScholarGoogle Scholar |

Mayer JA, Wone BWM, Alexander DC, Guo L, Ryals JA, Cushman JC (2021) Metabolic profiling of epidermal and mesophyll tissues under water-deficit stress in Opuntia ficus-indica reveals stress-adaptive metabolic responses. Functional Plant Biology 48, 716–730.
Metabolic profiling of epidermal and mesophyll tissues under water-deficit stress in Opuntia ficus-indica reveals stress-adaptive metabolic responses.Crossref | GoogleScholarGoogle Scholar |

Medina E, Osmond CB (1981) Temperature dependence of dark CO2 fixation and acid accumulation in Kalanchoë daigremontiana. Australian Journal of Plant Physiology 8, 641–649.

Mejia-Chang M, Reyes-Garcia C, Seibt U, Royles J, Meyer MT, Jones GD, Winter K, Arnedo M, Griffiths H (2021) Leaf water δ18O reflects water vapour exchange and uptake by C3 and CAM epiphytic bromeliads in Panama. Functional Plant Biology 48, 731–741.
Leaf water δ18O reflects water vapour exchange and uptake by C3 and CAM epiphytic bromeliads in Panama.Crossref | GoogleScholarGoogle Scholar |

Nott DL, Osmond CB (1982) Purification and properties of phosphoenolpyruvate carboxylase from plants with crassulacean acid metabolism. Australian Journal of Plant Physiology 9, 409–422.

O’Leary MH, Osmond CB (1980) Diffusional contribution to carbon isotope fractionation during dark CO2 fixation in CAM plants. Plant Physiology 66, 931–934.
Diffusional contribution to carbon isotope fractionation during dark CO2 fixation in CAM plants.Crossref | GoogleScholarGoogle Scholar |

Osmond CB (1967) β-Carboxylation in Atriplex. Biochimica et Biophysica Acta 141, 197–199.
β-Carboxylation in Atriplex.Crossref | GoogleScholarGoogle Scholar |

Osmond CB (1978) Crassulacean acid metabolism: a curiosity in context. Annual Review of Plant Physiology 29, 379–414.
Crassulacean acid metabolism: a curiosity in context.Crossref | GoogleScholarGoogle Scholar |

Osmond CB (1982) Carbon cycling and the stability of the photosynthetic apparatus in CAM. In ‘Crassulacean acid metabolism’. pp. 112–127. (American Society of Plant Physiologists: Rockville, USA)

Osmond CB (1997a) C4 photosynthesis: thirty or forty years on. Australian Journal of Plant Physiology 24, 409–412.

Osmond CB (1997b) To change the way we think about things. In ‘Nurturing creativity in research: ideas as the foundations of innovation’. pp. 2–11. (Research School of Biological Sciences: Canberra, Australia)

Osmond CB (2007) Crassulacean acid metabolism: now and then. Progress in Botany 68, 3–32.
Crassulacean acid metabolism: now and then.Crossref | GoogleScholarGoogle Scholar |

Osmond B (2014) Our eclectic adventures in the slower eras of photosynthesis: from New England down under to Biosphere 2 and beyond. Annual Review of Plant Biology 65, 1–32.
Our eclectic adventures in the slower eras of photosynthesis: from New England down under to Biosphere 2 and beyond.Crossref | GoogleScholarGoogle Scholar |

Osmond CB, Allaway WG (1974) Pathways of CO2 fixation in the CAM plant Kalanchoe daigremontiana. I Patterns of 14CO2 fixation in the light. Australian Journal of Plant Physiology 1, 503–511.

Osmond CB, Avadhani PN (1970) Inhibition of the β-carboxylation pathway of CO2 fixation by bisulfite compounds. Plant Physiology 45, 228–230.
Inhibition of the β-carboxylation pathway of CO2 fixation by bisulfite compounds.Crossref | GoogleScholarGoogle Scholar |

Osmond CB, Björkman O (1975) Pathways of CO2 fixation in the CAM plant Kalanchoë daigremontiana. II Effects of O2 and CO2 concentration on light and dark CO2 fixation. Australian Journal of Plant Physiology 2, 155–162.

Osmond CB, Ziegler H (1975) Schwere Pflanzen und leichte Pflanzen: Stabile Isotope im Photosynthesestoffwechsel und in der Biochemischen Ökologie. Naturwissenschaftliche Rundschau 28, 323–328.

Osmond CB, Allaway WG, Sutton BG, Troughton JH, Queiroz O, Lüttge U, Winter K (1973) Carbon isotope discrimination in photosynthesis of CAM-plants. Nature 246, 41–42.
Carbon isotope discrimination in photosynthesis of CAM-plants.Crossref | GoogleScholarGoogle Scholar |

Osmond CB, Ziegler H, Stichler W, Trimborn P (1975) Carbon isotope discrimination in alpine succulent plants supposed to be capable of crassulacean acid metabolism (CAM). Oecologia 18, 209–217.
Carbon isotope discrimination in alpine succulent plants supposed to be capable of crassulacean acid metabolism (CAM).Crossref | GoogleScholarGoogle Scholar |

Osmond CB, Bender MM, Burris RH (1976) Pathways of CO2 fixation in the CAM plant Kalanchoe daigremontiana. III. Correlation with δ13C value during growth and water stress. Australian Journal of Plant Physiology 3, 787–799.

Osmond CB, Nott DL, Firth PM (1979a) Carbon assimilation patterns and growth of the introduced CAM plant Opuntia inermis in Eastern Australia. Oecologia 40, 331–350.
Carbon assimilation patterns and growth of the introduced CAM plant Opuntia inermis in Eastern Australia.Crossref | GoogleScholarGoogle Scholar |

Osmond CB, Ludlow MM, Davies R, Cowan IR, Powles SB, Winter K (1979b) Stomatal responses to humidity in Opuntia inermis in relation to control of CO2 and H2O exchange patterns. Oecologia 41, 65–76.
Stomatal responses to humidity in Opuntia inermis in relation to control of CO2 and H2O exchange patterns.Crossref | GoogleScholarGoogle Scholar |

Osmond CB, Winter K, Ziegler H (1982) Functional significance of different pathways of CO2 fixation in photosynthesis. In ‘Physiological Plant Ecology II’. pp. 479–547. (Springer: Berlin, Germany)

Osmond CB, Holtum JAM, O’Leary MH, Roeske C, Wong OC, Summons RE, Avadhani PN (1988) Regulation of malic-acid metabolism in Crassulacean-acid-metabolism plants in the dark and light: in-vivo evidence from 13C-labeling patterns after 13CO2 fixation. Planta 175, 184–192.
Regulation of malic-acid metabolism in Crassulacean-acid-metabolism plants in the dark and light: in-vivo evidence from 13C-labeling patterns after 13CO2 fixation.Crossref | GoogleScholarGoogle Scholar |

Osmond B, Neales T, Stange G (2008) Curiosity and context revisited: crassulacean acid metabolism in the Anthropocene. Journal of Experimental Botany 59, 1489–1502.
Curiosity and context revisited: crassulacean acid metabolism in the Anthropocene.Crossref | GoogleScholarGoogle Scholar |

Osmond B, Chow WS, Wyber R, Zavafer A, Keller B, Pogson BJ, Robinson SA (2017) Relative functional and optical absorption cross-sections of PSII and other photosynthetic parameters monitored in situ, using a prototype light induced fluorescence transient (LIFT) device. Functional Plant Biology 44, 985–1006.
Relative functional and optical absorption cross-sections of PSII and other photosynthetic parameters monitored in situ, using a prototype light induced fluorescence transient (LIFT) device.Crossref | GoogleScholarGoogle Scholar |

Osmond B, Chow WS, Pogson BJ, Robinson SA (2019) Probing functional and optical cross-sections of PSII in leaves during state transitions using fast repetition rate light induced fluorescence transients. Functional Plant Biology 46, 567–583.
Probing functional and optical cross-sections of PSII in leaves during state transitions using fast repetition rate light induced fluorescence transients.Crossref | GoogleScholarGoogle Scholar |

Osmond CB, Chow WS, Robinson SA (2021) Inhibition of non-photochemical quenching increases functional absorption cross section of photosystem II as excitation from closed reaction centres is transferred to open centres, facilitating earlier light saturation of photosynthetic electron transport. Functional Plant Biology
Inhibition of non-photochemical quenching increases functional absorption cross section of photosystem II as excitation from closed reaction centres is transferred to open centres, facilitating earlier light saturation of photosynthetic electron transport.Crossref | GoogleScholarGoogle Scholar |

Owen NA, Choncubhair ÓN, Males J, de Real Laborde JI, Rubio-Cortés R, Griffiths H, Lanigan G (2016) Eddy covariance captures four-phase crassulacean acid metabolism (CAM) gas exchange signature in Agave. Plant, Cell & Environment 39, 295–309.
Eddy covariance captures four-phase crassulacean acid metabolism (CAM) gas exchange signature in Agave.Crossref | GoogleScholarGoogle Scholar |

Rascher U, Bobich EG, Osmond CB (2006) The “Kluge-Lüttge Kammer”: a preliminary evaluation of an enclosed, crassulacean acid metabolism (CAM) mesocosm that allows separation of synchronized and desynchronized contributions of plants to whole system gas exchange. Plant Biology 8, 167–174.
The “Kluge-Lüttge Kammer”: a preliminary evaluation of an enclosed, crassulacean acid metabolism (CAM) mesocosm that allows separation of synchronized and desynchronized contributions of plants to whole system gas exchange.Crossref | GoogleScholarGoogle Scholar |

Schreiber U, Groberman L, Vidaver W (1975) Portable, solid-state fluorometer for the measurement of chlorophyll fluorescence induction in plants. The Review of Scientific Instruments 46, 538–542.
Portable, solid-state fluorometer for the measurement of chlorophyll fluorescence induction in plants.Crossref | GoogleScholarGoogle Scholar |

Schreiber U, Schliwa U, Bilger W (1986) Continuous recording of photochemical and non-photochemical chlorophyll fluorescence quenching with a new type of modulation fluorometer. Photosynthesis Research 10, 51–62.
Continuous recording of photochemical and non-photochemical chlorophyll fluorescence quenching with a new type of modulation fluorometer.Crossref | GoogleScholarGoogle Scholar |

Silvera K, Santiago LS, Cushman JC, Winter K (2010) The incidence of crassulacean acid metabolism in Orchidaceae derived from carbon isotope ratios: a checklist of the flora of Panama and Costa Rica. Botanical Journal of the Linnean Society 163, 194–222.
The incidence of crassulacean acid metabolism in Orchidaceae derived from carbon isotope ratios: a checklist of the flora of Panama and Costa Rica.Crossref | GoogleScholarGoogle Scholar |

Smith BN, Epstein S (1971) Two categories of 13C/12C ratios for higher plants. Plant Physiology 47, 380–384.
Two categories of 13C/12C ratios for higher plants.Crossref | GoogleScholarGoogle Scholar |

Sutton BG, Osmond CB (1972) Dark fixation of CO2 by crassulacean plants. Evidence for a single carboxylation step. Plant Physiology 50, 360–365.
Dark fixation of CO2 by crassulacean plants. Evidence for a single carboxylation step.Crossref | GoogleScholarGoogle Scholar |

Ting IP, Gibbs M (1982) (Eds) ‘Crassulacean acid metabolism.’ (American Society of Plant Physiologists: Rockville, USA)

Ting IP, Osmond CB (1973a) Multiple forms of plant phosphoenolpyruvate carboxylase associated with different metabolic pathways. Plant Physiology 51, 448–453.
Multiple forms of plant phosphoenolpyruvate carboxylase associated with different metabolic pathways.Crossref | GoogleScholarGoogle Scholar |

Ting IP, Osmond CB (1973b) Activation of plant p-enolpyruvate carboxylases by glucose-6-phosphate: a particular role in crassulacean acid metabolism. Plant Science Letters 1, 123–128.
Activation of plant p-enolpyruvate carboxylases by glucose-6-phosphate: a particular role in crassulacean acid metabolism.Crossref | GoogleScholarGoogle Scholar |

von Willert DJ, Armbrüster N, Drees T, Zaborowski M (2005) Welwitschia mirabilis: CAM or not CAM – what is the answer? Functional Plant Biology 32, 389–395.
Welwitschia mirabilis: CAM or not CAM – what is the answer?Crossref | GoogleScholarGoogle Scholar |

Winter K (1979) δ13C values of some succulent plants from Madagascar. Oecologia 40, 103–112.
δ13C values of some succulent plants from Madagascar.Crossref | GoogleScholarGoogle Scholar |

Winter K (2019) Ecophysiology of constitutive and facultative CAM photosynthesis. Journal of Experimental Botany 70, 6495–6508.
Ecophysiology of constitutive and facultative CAM photosynthesis.Crossref | GoogleScholarGoogle Scholar |

Winter K, Holtum JAM (2014) Facultative crassulacean acid metabolism (CAM) plants: powerful tools for unravelling the functional elements of CAM photosynthesis. Journal of Experimental Botany 65, 3425–3441.
Facultative crassulacean acid metabolism (CAM) plants: powerful tools for unravelling the functional elements of CAM photosynthesis.Crossref | GoogleScholarGoogle Scholar |

Winter K, von Willert DJ (1972) NaCl-induzierter Crassulaceensäurestoffwechsel bei Mesembryanthemum crystallinum. Zeitschrift für Pflanzenphysiologie 67, 166–170.
NaCl-induzierter Crassulaceensäurestoffwechsel bei Mesembryanthemum crystallinum.Crossref | GoogleScholarGoogle Scholar |

Winter K, Wallace BJ, Stocker GC, Roksandic Z (1983) Crassulacean acid metabolism in Australian vascular epiphytes and some related species. Oecologia 57, 129–141.
Crassulacean acid metabolism in Australian vascular epiphytes and some related species.Crossref | GoogleScholarGoogle Scholar |

Winter K, Medina E, Garcia V, Mayoral ML, Munoz R (1985) Crassulacean acid metabolism in roots of a leafless orchid, Campylocentrum tyrridion Garay & Dunsterv. Journal of Plant Physiology 118, 73–78.
Crassulacean acid metabolism in roots of a leafless orchid, Campylocentrum tyrridion Garay & Dunsterv.Crossref | GoogleScholarGoogle Scholar |

Winter K, Holtum JAM, Smith JAC (2015) Crassulacean acid metabolism: a continuous or discrete trait? New Phytologist 208, 73–78.
Crassulacean acid metabolism: a continuous or discrete trait?Crossref | GoogleScholarGoogle Scholar |

Winter K, Sage RF, Edwards EJ, Virgo A, Holtum JAM (2019) Facultative crassulacean acid metabolism in a C3-C4 intermediate. Journal of Experimental Botany 70, 6571–6579.
Facultative crassulacean acid metabolism in a C3-C4 intermediate.Crossref | GoogleScholarGoogle Scholar |

Winter K, Garcia M, Virgo A, Ceballos J, Holtum JAM (2021a) Does the C4 plant Trianthema portulacastrum (Aizoaceae) exhibit weakly expressed crassulaceam acid metabolism (CAM)? Functional Plant Biology 48, 655–665.
Does the C4 plant Trianthema portulacastrum (Aizoaceae) exhibit weakly expressed crassulaceam acid metabolism (CAM)?Crossref | GoogleScholarGoogle Scholar |

Winter K, Garcia M, Virgo A, Smith JAC (2021b) Low-level CAM photosynthesis in a succulent-leaved member of the Urticaceae, Pilea peperomioides. Functional Plant Biology 48, 683–690.
Low-level CAM photosynthesis in a succulent-leaved member of the Urticaceae, Pilea peperomioides.Crossref | GoogleScholarGoogle Scholar |

Winter K, Virgo A, Garcia M, Aranda J, Holtum JAM (2021c) Constitutive and facultative crassulacean acid metabolism (CAM) in Cuban oregano, Coleus amboinicus (Lamiaceae). Functional Plant Biology 48, 647–654.
Constitutive and facultative crassulacean acid metabolism (CAM) in Cuban oregano, Coleus amboinicus (Lamiaceae).Crossref | GoogleScholarGoogle Scholar |

Yang X, Cushman JC, Borland AM, et al (2015) A roadmap for research on crassulacean acid metabolism (CAM) to enhance sustainable food and bioenergy production in a hotter, drier world. New Phytologist 207, 491–504.
A roadmap for research on crassulacean acid metabolism (CAM) to enhance sustainable food and bioenergy production in a hotter, drier world.Crossref | GoogleScholarGoogle Scholar |