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Soil-borne microorganisms and soil-type affect pyrrolizidine alkaloids in Jacobaea vulgaris

Joosten, L. and Mulder, P.P.J. and Klinkhamer, P.G.L. and Veen van, J.A. (2009) Soil-borne microorganisms and soil-type affect pyrrolizidine alkaloids in Jacobaea vulgaris. Plant and Soil, 325, 133-143. ISSN 0032-079X.

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Official URL: http://dx.doi.org/10.1007/s11104-009-9963-7

Abstract

Secondary metabolites like pyrrolizidine alkaloids (PAs) play a crucial part in plant defense. We studied the effects of soil-borne microorganisms and soil-type on pyrrolizidine alkaloids in roots and shoots of Jacobaea vulgaris. We used clones of two genotypes from a dune area (Meijendel), propagated by tissue culture and grown on two sterilized soils and sterilized soils inoculated with 5% of non-sterilized soil of either of the two soil-types. Soil-borne microorganisms and soil-type affected the composition of PAs. By changing the composition rather than the total concentration below and aboveground, plants have a more complex defense strategy than formerly thought. Interestingly, a stronger negative effect on plant growth was found in sterilized soils inoculated with their ‘own’ microbial community suggesting that pathogenic and/or other plant inhibiting microorganisms were adapted to their ‘own’ soil conditions.

Item Type:Article
Institutes:Nederlands Instituut voor Ecologie (NIOO)
ID Code:6351
Deposited On:10 Jun 2010 02:00
Last Modified:08 Sep 2011 13:42

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