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Publication Type J
Authors Peckmann, K., C. E. Martin, D. J. von Willert and W. B. Herppich
Title Biochemical changes in intact leaf mitochondria throughout the NaCl-induced transition from C-3 to CAM in the facultatively halophytic CAM plant Mesembryanthemum crystallinum
Source Phyton-Annales Rei Botanicae
Author Keywords Acidity alternative respiration citric acid malic acid cytochrome pathway osmotic potential crassulacean-acid-metabolism salt-stressed plants photon fluence rates kalanchoe-daigremontiana oxidative properties malate accumulation alternative oxidase c-3-cam transition carbon metabolism high light
Abstract Although molecular, biochemical, and physiological studies comparing Mesembryanthemum crystallinum in its C, and CAM states are numerous, no studies have reported such changes during the transition from C, to CAM. Consequently, respiratory activities during this transition were examined in this study. After one week of NaCl-treatment, water content decreased, content of osmotically active substance increased, and diel malic acid fluctuations indicative of CAM occurred in leaves of Mesembryanthemum crystallinum grown in pots. Smaller fluctuations of citric acid preceded, then accompanied those of malic acid for one week. Cyt c oxidase activity greatly increased after CAM induction; rates of glycine oxidation transiently increased after the start of the salt treatment, retaining slightly higher rates after full CAM-establishment. Oxidation rates of succinate, malate, and NADH were variable before and after the induction of CAM. In contrast, MDH and fumarase activities increased just before the salt treatment of the plants, then slightly decreased afterward. Coincident with stabilization of diel malic acid changes approx. one week after the start of salt treatments, oxidation rates for the above compounds and enzyme activities of MDH and fumarase, but not Cyt c oxidase and NAD-ME, declined to approx. the same level as at the start of the experiment for the remainder of the treatment period.
Author Address [Peckmann, Klaus; Martin, Craig E.; von Willert, Dieter J.] Westfalische Wilhelms Univ, Inst Okol Pflanzen, Schlosspl 55, D-48143 Munster, Germany. [Martin, Craig E.] Univ Kansas, Dept Ecol & Evolutionary Biol, Lawrence, KS 66045 USA. [Herppich, Werner B.] Leibniz Inst Agr Engn & Bioecon ATB, Dept Hort Engn, Max Eyth Allee 100, D-14469 Potsdam, Germany. Herppich, WB (reprint author), Leibniz Inst Agr Engn & Bioecon ATB, Dept Hort Engn, Max Eyth Allee 100, D-14469 Potsdam, Germany. wherppich@atb-potsdam.de
ISSN 0079-2047
ISBN 0079-2047
29-Character Source Abbreviation Phyton-Ann. REI Bot.
Year Published 2019
Volume 59
Issue 1-2
Beginning Page 109-118
Digital Object Identifier (DOI) 10.12905/0380.phyton59-2019-0109
Unique Article Identifier WOS:000511239000013
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