PMID- 33873823 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210420 IS - 1469-8137 (Electronic) IS - 0028-646X (Linking) VI - 101 IP - 1 DP - 1985 Sep TI - TANSLEY REVIEW No 1.: VARIATION IN PHOTOSYNTHETIC ACID METABOLISM IN VASCULAR PLANTS: CAM AND RELATED PHENOMENA. PG - 3-24 LID - 10.1111/j.1469-8137.1985.tb02815.x [doi] AB - The term, photosynthetic acid metabolism (PAM), encompasses processes which involve four-carbon (C(4) ) acids as carbon-carrying intermediates between the carboxylations catalysed by phosphoenolpyruvate (PEP) carboxylase and ribulose biphosphate (RuBP) carboxylase. These carboxylations may be separated either spatially, as in C(4) photosynthesis which is not covered here, or temporally. Separation in time is referred to as diel PAM (DPAM) and the variations on this particular theme are the subject of this review. DPAM includes stomatal and astomatal types. The former types, usually described as crassulacean acid metabolism (CAM), are referred to here as stomatal CAM (SCAM). Astomatal PAM includes both aquatic and terrestrial forms; aquatic acid metabolism (AAM) and terrestrial astomatal acid metabolism (TAAM). Physiological, biochemical, structural, ecological and evolutionary aspects of these mechanisms of acquisition of carbon dioxide are reviewed. CONTENTS Summary 3 I. General Introduction to Photosynthetic Acid Metabolism (PAM) 4 II. Stomatal Crassulacean (Diel Photosynthetic) Acid Metabolism (SCAM) 5 III. Astomatal Photosynthetic Acid Metabolism 13 IV. Idling 18 V. Structural Variation in Plants Exhibiting Diel PAM (DPAM) 18 VI. The Mechanism of the Switch between C(3) Photosynthesis and DPAM 19 VII. The Cost of DPAM 19 VIII. The Evolution of DPAM 20 IX. Concluding Comment 22 Acknowledgements 22 References 22. FAU - Cockburn, W AU - Cockburn W AD - Botany Department, University of Leicester, Leicester LEI 7RH, UK. LA - eng PT - Journal Article PL - England TA - New Phytol JT - The New phytologist JID - 9882884 SB - IM OTO - NOTNLM OT - CAM OT - Crassulacean acid metabolism OT - aquatic acid metabolism OT - photosynthetic acid metabolism OT - terrestrial astomatal acid metabolism EDAT- 1985/09/01 00:00 MHDA- 1985/09/01 00:01 CRDT- 2021/04/20 01:05 PHST- 2021/04/20 01:05 [entrez] PHST- 1985/09/01 00:00 [pubmed] PHST- 1985/09/01 00:01 [medline] AID - 10.1111/j.1469-8137.1985.tb02815.x [doi] PST - ppublish SO - New Phytol. 1985 Sep;101(1):3-24. doi: 10.1111/j.1469-8137.1985.tb02815.x.