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Zn pollution counteracts Cd toxicity in metal-tolerant ectomycorrhizal fungi and their host plant, pinus sylvestris

Erik Krznaric, Jan HL Wevers, Christophe Cloquet, Jaco Vangronsveld, Frank Vanhaecke UGent and Jan V Colpaert (2010) ENVIRONMENTAL MICROBIOLOGY. 12(8). p.2133-2141
abstract
Adaptive Zn and Cd tolerance have evolved in populations of the ectomycorrhizal fungus Suillus luteus. When exposed to high concentrations of both metals in vitro, a one-sided antagonism was apparent in the Zn- and Cd-tolerant isolates. Addition of high Zn concentrations restored growth of Cd-stressed isolates, but not vice versa. The antagonistic effect was not detected in a S. luteus isolate from non-contaminated land and in Paxillus involutus. The fungi were inoculated on pine seedlings and subsequently exposed to ecologically relevant Zn and Cd concentrations in single and mixed treatments. The applied doses severely reduced nutrient acquisition of non-mycorrhizal pines and pines inoculated with metal-sensitive S. luteus. Highest translocation of Zn and Cd to shoots occurred in the same plants. Seedlings inoculated with fungi collected from the polluted site reduced metal transfer to their host and maintained nutrient acquisition under high metal exposure. The isolate showing highest tolerance in vitro also offered best protection in symbiosis. The antagonistic effect of high Zn on Cd toxicity was confirmed in the plant experiment. The results indicate that a Zn- and Cd-polluted soil has selected ectomycorrhizal fungi that are able to survive and protect their phytobiont from nutrient starvation and excessive metal uptake.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
SUILLUS-LUTEUS, HEAVY-METALS, THLASPI-CAERULESCENS, CELLULAR MECHANISMS, CADMIUM TOLERANCE, SILENE-VULGARIS, SEEDLINGS, ZINC, MYCORRHIZAL, GROWTH
journal title
ENVIRONMENTAL MICROBIOLOGY
Environ. Microbiol.
volume
12
issue
8
pages
2133 - 2141
Web of Science type
Article
Web of Science id
000280652500008
JCR category
MICROBIOLOGY
JCR impact factor
5.537 (2010)
JCR rank
14/103 (2010)
JCR quartile
1 (2010)
ISSN
1462-2912
DOI
10.1111/j.1462-2920.2009.02082.x
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1113649
handle
http://hdl.handle.net/1854/LU-1113649
date created
2011-02-01 13:46:46
date last changed
2011-02-22 09:27:31
@article{1113649,
  abstract     = {Adaptive Zn and Cd tolerance have evolved in populations of the ectomycorrhizal fungus Suillus luteus. When exposed to high concentrations of both metals in vitro, a one-sided antagonism was apparent in the Zn- and Cd-tolerant isolates. Addition of high Zn concentrations restored growth of Cd-stressed isolates, but not vice versa. The antagonistic effect was not detected in a S. luteus isolate from non-contaminated land and in Paxillus involutus. The fungi were inoculated on pine seedlings and subsequently exposed to ecologically relevant Zn and Cd concentrations in single and mixed treatments. The applied doses severely reduced nutrient acquisition of non-mycorrhizal pines and pines inoculated with metal-sensitive S. luteus. Highest translocation of Zn and Cd to shoots occurred in the same plants. Seedlings inoculated with fungi collected from the polluted site reduced metal transfer to their host and maintained nutrient acquisition under high metal exposure. The isolate showing highest tolerance in vitro also offered best protection in symbiosis. The antagonistic effect of high Zn on Cd toxicity was confirmed in the plant experiment. The results indicate that a Zn- and Cd-polluted soil has selected ectomycorrhizal fungi that are able to survive and protect their phytobiont from nutrient starvation and excessive metal uptake.},
  author       = {Krznaric, Erik and Wevers, Jan HL and Cloquet, Christophe and Vangronsveld, Jaco and Vanhaecke, Frank and Colpaert, Jan V},
  issn         = {1462-2912},
  journal      = {ENVIRONMENTAL MICROBIOLOGY},
  keyword      = {SUILLUS-LUTEUS,HEAVY-METALS,THLASPI-CAERULESCENS,CELLULAR MECHANISMS,CADMIUM TOLERANCE,SILENE-VULGARIS,SEEDLINGS,ZINC,MYCORRHIZAL,GROWTH},
  language     = {eng},
  number       = {8},
  pages        = {2133--2141},
  title        = {Zn pollution counteracts Cd toxicity in metal-tolerant ectomycorrhizal fungi and their host plant, pinus sylvestris},
  url          = {http://dx.doi.org/10.1111/j.1462-2920.2009.02082.x},
  volume       = {12},
  year         = {2010},
}

Chicago
Krznaric, Erik, Jan HL Wevers, Christophe Cloquet, Jaco Vangronsveld, Frank Vanhaecke, and Jan V Colpaert. 2010. “Zn Pollution Counteracts Cd Toxicity in Metal-tolerant Ectomycorrhizal Fungi and Their Host Plant, Pinus Sylvestris.” Environmental Microbiology 12 (8): 2133–2141.
APA
Krznaric, E., Wevers, J. H., Cloquet, C., Vangronsveld, J., Vanhaecke, F., & Colpaert, J. V. (2010). Zn pollution counteracts Cd toxicity in metal-tolerant ectomycorrhizal fungi and their host plant, pinus sylvestris. ENVIRONMENTAL MICROBIOLOGY, 12(8), 2133–2141.
Vancouver
1.
Krznaric E, Wevers JH, Cloquet C, Vangronsveld J, Vanhaecke F, Colpaert JV. Zn pollution counteracts Cd toxicity in metal-tolerant ectomycorrhizal fungi and their host plant, pinus sylvestris. ENVIRONMENTAL MICROBIOLOGY. 2010;12(8):2133–41.
MLA
Krznaric, Erik, Jan HL Wevers, Christophe Cloquet, et al. “Zn Pollution Counteracts Cd Toxicity in Metal-tolerant Ectomycorrhizal Fungi and Their Host Plant, Pinus Sylvestris.” ENVIRONMENTAL MICROBIOLOGY 12.8 (2010): 2133–2141. Print.