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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/26299

Title: Cultivar and Metal-Specific Effects of Endophytic Bacteria in Helianthus tuberosus Exposed to Cd and Zn
Authors: Montalban, Blanca
Thijs, Sofie
Carmen Lobo, Ma
Weyens, Nele
Ameloot, Marcel
Vangronsveld, Jaco
Perez-Sanz, Araceli
Issue Date: 2017
Publisher: MDPI AG
Abstract: Plant growth promoting endophytic bacteria (PGPB) isolated from Brassica napus were inoculated in two cultivars of Helianthus tuberosus (VR and D19) growing on sand supplemented with 0.1 mM Cd or 1 mM Zn. Plant growth, concentrations of metals and thiobarbituric acid (TBA) reactive compounds were determined. Colonization of roots of H. tuberosus D19 by Pseudomonas sp. 262 was evaluated using confocal laser scanning microscopy. Pseudomonas sp. 228, Serratia sp. 246 and Pseudomonas sp. 262 significantly enhanced growth of H. tuberosus D19 exposed to Cd or Zn. Pseudomonas sp. 228 significantly increased Cd concentrations in roots. Serratia sp. 246, and Pseudomonas sp. 256 and 228 resulted in significantly decreased contents of TBA reactive compounds in roots of Zn exposed D19 plants. Growth improvement and decrease of metal-induced stress were more pronounced in D19 than in VR. Pseudomonas sp. 262-green fluorescent protein (GFP) colonized the root epidermis/exodermis and also inside root hairs, indicating that an endophytic interaction was established. H. tuberosus D19 inoculated with Pseudomonas sp. 228, Serratia sp. 246 and Pseudomonas sp. 262 holds promise for sustainable biomass production in combination with phytoremediation on Cd and Zn contaminated soils.
Notes: [Montalban, Blanca; Carmen Lobo, Ma; Perez-Sanz, Araceli] IMIDRA, Dept Invest Agroambiental, Autovia Noreste A-2 Km 38-2, Madrid 28800, Spain. [Montalban, Blanca; Thijs, Sofie; Weyens, Nele; Vangronsveld, Jaco] Hasselt Univ, Ctr Environm Sci, Environm Biol, Agoralaan Bldg D, BE-3590 Diepenbeek, Belgium. [Ameloot, Marcel] Hasselt Univ, Biomed Res Dept, Agoralaan Bldg D, BE-3590 Diepenbeek, Belgium. [Perez-Sanz, Araceli] Nat Hist Museum, Dept Earth Sci, Cromwell Rd, London SW7 5BD, England.
URI: http://hdl.handle.net/1942/26299
DOI: 10.3390/ijms18102026
ISI #: 000414671800010
ISSN: 1422-0067
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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