Loading content, please wait..
loading..
Logo
Version 3.20
or
Publication Type J
Authors Ashihara, H., K. Adachi, M. Otawa, E. Yasumoto, Y. Fukushima, M. Kato, H. Sano, H. Sasamoto and S. Baba
Title Compatible solutes and inorganic ions in the mangrove plant Avicennia marina and their effects on the activities of enzymes
Source Zeitschrift Fur Naturforschung C-a Journal of Biosciences
Author Keywords catharanthus-roseus cells phosphoenolpyruvate carboxylase australian mangroves metabolic-regulation chemical-composition stomatal responses salt responses grey mangrove amino-acids tolerance
Abstract Naturally grown two-month-old seedlings of Avicennia marina contain high concentrations of Na+ and Cl-. Our NMR studies revealed an accumulation of glycinebetaine, asparagine and stachyose in A. marina. The highest concentration of glycinebetaine was observed in young leaves, while the distribution of stachyose was restricted in stems and roots. Asparagine comprised more than 96% of total free amino acids in roots and 84% in leaves from two-year-old plants. Little or no accumulation of proline or polyols, which are proposed as compatible solutes in other plants, could be detected in A. marina. The activities of phosphofructokinase, pyrophosphate:fructose-6-phosphate 1-phosphotransferase, glucose-6-phosphate dehydrogenase, 6-phosphogluconate dehydrogenase (decarboxylating), phosphoenolpyruvate carboxylase and NAD:malate dehydrogenase from young leaves of A. marina were inhibited by NaCl, while the activity of fructose-1,6-bisphosphate aldolase was activated by 50-200 mM NaCl. There was little or no effect of high concentrations (up to 500 mM) of glycinebetaine on the activities of any of these enzymes. No significant protection by glycinebetaine was detected against NaCl inhibition of these enzymatic activities. Based on these results, possible mechanisms for the salt-resistance of A. marina cells are discussed.
Author Address MARINE BIOTECHNOL INST SHIMIZU LABS,SHIZUOKA 424,JAPAN. FORESTRY & FOREST PROD RES INST,CELL MANIPULAT LAB,TSUKUBA,IBARAKI 305,JAPAN. UNIV RYUKYUS,COLL AGR,DEPT ENVIRONM SCI & TECHNOL,NISHIHARA,OKINAWA 90301,JAPAN. Ashihara, H (reprint author), OCHANOMIZU UNIV,FAC SCI,DEPT BIOL,BUNKYO KU,TOKYO 112,JAPAN.
ISSN 0939-5075
ISBN 0939-5075
29-Character Source Abbreviation Z.Naturforsch.(C)
Publication Date Jul-Aug
Year Published 1997
Volume 52
Issue 7-8
Beginning Page 433-440
Unique Article Identifier WOS:A1997XU37000004
Plants associated with this reference

LEGAL NOTICES — This website is protected by Copyright © The University of Sussex, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020. The eHALOPH database is protected by Database Right and Copyright © The University of Sussex and other contributors, 2006, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020. This database is based on an earlier work by James Aronson.
THIS WEBSITE AND THIS DATABASE ARE PROVIDED ON AN "AS IS" BASIS, AND YOU USE THEM AND RELY ON THEM AT YOUR OWN RISK.

Contact email: halophytes@sussex.ac.uk
Credits – Tim Flowers, Joaquim Santos, Moritz Jahns, Brian Warburton, Peter Reed