The role of radial oxygen loss and root anatomy on zinc uptake and tolerance in mangrove seedlings

H. Cheng; Y. Liu; N. F Y Tam; X. Wang; S. Y. Li; G. Z. Chen; Z. H. Ye

doi:10.1016/j.envpol.2010.01.025

Author(s)

H. Cheng
Y. Liu
N. F Y Tam
X. Wang
S. Y. Li
And 2 others

G. Z. Chen
Z. H. Ye

Detail(s)

Original language	English
Pages (from-to)	1189-1196
Journal / Publication	Environmental Pollution
Volume	158
Issue number	5
Publication status	Published - May 2010

Link(s)

DOI	DOI https://doi.org/10.1016/j.envpol.2010.01.025 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-77949913664&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(b158c8c2-ae7a-45b7-8b7d-95c510d38175).html

Abstract

Root anatomy, radial oxygen loss (ROL) and zinc (Zn) uptake and tolerance in mangrove plants were investigated using seedlings of Aegiceras corniculatum, Bruguiera gymnorrhiza and Rhizophora stylosa. The results revealed that B. gymnorrhiza, which possessed the 'tightest barrier' in ROL spatial patterns among the three species studied, took up the least Zn and showed the highest Zn tolerance. Furthermore, zinc significantly decreased the ROL of all three plants by inhibition of root permeability, which included an obvious thickening of outer cortex and significant increases of lignification in cell walls. The results of SEM X-ray microanalysis further confirmed that such an inducible, low permeability of roots was likely an adaptive strategy to metal stress by direct prevention of excessive Zn entering into the root. The present study proposes new evidence of structural adaptive strategy on metal tolerance by mangrove seedlings. © 2010 Elsevier Ltd. All rights reserved.

Research Area(s)

Heavy metals, Mangrove plants, Radial oxygen loss, Root anatomy, SEM X-ray microanalysis

SDG 14 - Life Below Water

Citation Format(s)

[ RIS ] [ BibTeX ]

The role of radial oxygen loss and root anatomy on zinc uptake and tolerance in mangrove seedlings. / Cheng, H.; Liu, Y.; Tam, N. F Y et al.
In: Environmental Pollution, Vol. 158, No. 5, 05.2010, p. 1189-1196.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Cheng, H, Liu, Y, Tam, NFY, Wang, X, Li, SY, Chen, GZ & Ye, ZH 2010, 'The role of radial oxygen loss and root anatomy on zinc uptake and tolerance in mangrove seedlings', Environmental Pollution, vol. 158, no. 5, pp. 1189-1196. https://doi.org/10.1016/j.envpol.2010.01.025

Cheng, H., Liu, Y., Tam, N. F. Y., Wang, X., Li, S. Y., Chen, G. Z., & Ye, Z. H. (2010). The role of radial oxygen loss and root anatomy on zinc uptake and tolerance in mangrove seedlings. Environmental Pollution, 158(5), 1189-1196. https://doi.org/10.1016/j.envpol.2010.01.025

Cheng H, Liu Y, Tam NFY, Wang X, Li SY, Chen GZ et al. The role of radial oxygen loss and root anatomy on zinc uptake and tolerance in mangrove seedlings. Environmental Pollution. 2010 May;158(5):1189-1196. doi: 10.1016/j.envpol.2010.01.025

Cheng, H. ; Liu, Y. ; Tam, N. F Y et al. / The role of radial oxygen loss and root anatomy on zinc uptake and tolerance in mangrove seedlings. In: Environmental Pollution. 2010 ; Vol. 158, No. 5. pp. 1189-1196.