Contrasting soil ciliate species richness and abundance between two tropical plant species: a test of the plant effect.

Microbial Ecology
Dimaris Acosta-Mercado, Denis H Lynn

Abstract

We still have a rudimentary understanding about the mechanism by which plant roots may stimulate soil microbial interactions. A biochemical model involving plant-derived biochemical fractions, such as exudates, has been used to explain this "rhizosphere effect" on bacteria. However, the variable response of other soil microbial groups, such as protozoa, to the rhizosphere suggests that other factors could be involved in shaping their communities. Thus, two experiments were designed to: (1) determine whether stimulatory and/or inhibiting factors associated with particular plant species regulate ciliate diversity and abundance and (2) obtain a better understanding about the mechanism by which these plant factors operate in the rhizosphere. Bacterial and chemical slurries were reciprocally exchanged between two plant species known to differ in terms of ciliate species richness and abundance (i.e., Canella winterana and plantation Tectona grandis). Analysis of variance showed that the bacteria plus nutrients and the nutrients only treatment had no significant effect on overall ciliate species richness and abundance when compared to the control treatment. However, the use of only colpodean species increased the taxonomic resolution ...Continue Reading

References

Aug 1, 1967·Canadian Journal of Microbiology·J F Darbyshire, M P Greaves
Mar 1, 1993·Birth·M W Enkin
Nov 27, 2002·Applied and Environmental Microbiology·Regin RønnJames I Prosser
Jan 31, 2003·Canadian Journal of Microbiology·Jeffrey S BuyerEstelle Russek-Cohen
Apr 12, 2003·Journal of Microbiological Methods·Dimaris Acosta-Mercado, Denis H Lynn
Nov 13, 2004·The Journal of Eukaryotic Microbiology·Dimaris Acosta-Mercado, Denis H Lynn
Jun 1, 2004·The New Phytologist·Michael Bonkowski

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Citations

Feb 16, 2018·FEMS Microbiology Reviews·Stefan GeisenEnrique Lara

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