Effects of salinity on anatomical features and physiology of a semi-mangrove plant Myoporum bontioides

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

9 Scopus Citations
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Author(s)

  • H. M. Xu
  • N. F Y Tam
  • Q. J. Zan
  • M. Bai
  • P. K S Shin
  • L. L P Vrijmoed
  • W. B. Liao

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)738-746
Journal / PublicationMarine Pollution Bulletin
Volume85
Issue number2
Online published24 Apr 2014
Publication statusPublished - 30 Aug 2014

Abstract

The effect of different concentrations of NaCl, 0, 100, 200, 300 and 400. mM, on the anatomical features and physiology of Myoporum bontioides was investigated. The photosynthetic rates (Pn) were significantly reduced by salt stress, with the lowest values at 400 mM NaCl. The content of malondialdehyde (MDA), proline and soluble sugar, as well as the activities of peroxidase (POD) and catalase (CAT) increased at the beginning, but became similar to the control as the experiment proceeded. The NaCl effect on superoxide dismutase (SOD) was different from the other parameters, with a significant reduction at 400 mM NaCl at Day 7 Salt glands were found in both upper and lower epidermis, and the ratios of the thickness of palisade to spongy mesophyll tissues increased with NaCl concentrations. The medullary ray was clearly damaged by NaCl at levels of 200 and 300 mM. These results demonstrated that M. bontioides could adapt to a relatively low salinity, and was not a halophilous species. © 2014 Elsevier Ltd.

Research Area(s)

  • Anatomical features, Myoporum bontioides, Physiological traits, Salt adaptability

Citation Format(s)

Effects of salinity on anatomical features and physiology of a semi-mangrove plant Myoporum bontioides. / Xu, H. M.; Tam, N. F Y; Zan, Q. J.; Bai, M.; Shin, P. K S; Vrijmoed, L. L P; Cheung, S. G.; Liao, W. B.

In: Marine Pollution Bulletin, Vol. 85, No. 2, 30.08.2014, p. 738-746.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review