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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/16371

Title: THE EFFECT OF LONG-TERM CD AND NI EXPOSURE ON SEED ENDOPHYTES OF AGROSTIS CAPILLARIS AND THEIR POTENTIAL APPLICATION IN PHYTOREMEDIATION OF METAL-CONTAMINATED SOILS
Authors: TRUYENS, Sascha
JAMBON, Inge
CROES, Sarah
JANSSEN, Jolien
WEYENS, Nele
Mench, Michel
CARLEER, Robert
CUYPERS, Ann
VANGRONSVELD, Jaco
Issue Date: 2014
Citation: INTERNATIONAL JOURNAL OF PHYTOREMEDIATION, 16 (7-8), p. 643-659
Abstract: We examined whether long-term Cd exposure leads to beneficial changes in the cultivable endophytic bacteria present in the seeds of Agrostis capillaris. Therefore the cultivable seed endophytes of Agrostis capillaris growing on a long-term Cd/Ni-contaminated plot (Cd/Ni seeds) were compared with those originating from a non-contaminated plot (control seeds). We observed plant- and contaminant-dependent effects on the population composition between control and Cd/Ni seeds. Also differences in phenotypic characteristics were found: endophytes from Cd/Ni seeds exhibited more ACC deaminase activity and production of siderophores and IAA, while endophytes from control seeds, very surprisingly, showed more metal tolerance. Finally, the 3 most promising seed endophytes were selected based on their metal tolerance and plant growth promoting potential, and inoculated in Agrostis capillaris seedlings. In case of non-exposed plants, inoculation resulted in a significantly improved plant growth; after inoculation of Cd-exposed plants an increased Cd uptake was achieved without affecting plant growth. This indicates that inoculation of Agrostis with its seed endophytes might be beneficial for its establishment during phytoextraction and phytostabilisation of Cd-contaminated soils.
Notes: Vangronsveld, J (reprint author), Hasselt Univ, Agoralaan Bldg D, B-3590 Diepenbeek, Belgium, jaco.vangronsveld@uhasselt.be
URI: http://hdl.handle.net/1942/16371
DOI: 10.1080/15226514.2013.837027
ISI #: 000329510200012
ISSN: 1522-6514
Category: A1
Type: Journal Contribution
Validation: ecoom, 2015
Appears in Collections: Research publications

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