Methylotrophic bacteria on the surfaces of field-grown sunflower plants: a biogeographic perspective

Theory in Biosciences = Theorie in Den Biowissenschaften
S Schauer, U Kutschera

Abstract

Plant-associated methylobacteria of the genus Methylobacterium colonize the foliage and roots of embryophytes, living on the volatile compound methanol emitted from the cells of their host organism. In this study we analyzed these surface-dwelling pink-pigmented epiphytes in three contrasting habitats of field-grown sunflower plants (Helianthus annuus). Using the methanol-ammonium salts agar surface impression method and a polymerase chain reaction (PCR)-based assay, we document the occurrence and characterize the composition of the methylobacteria in these epiphytic habitats. In both the sun-exposed phylloplane (yellow ligulate florets; green leaves) and the moist, dark rhizoplane pink-pigmented methylobacteria were detected that are assigned to the taxa M. mesophilicum, M. extorquens, M. radiotolerans and M. sp. (un-identifiable by our methods). Considerable differences in relative species compositions were found. These data are discussed with respect to a biogeographic model of the plant surface and microbial population dynamics on leaves. In addition, methylobacteria were analyzed by microscopic techniques. We document that in sedentary colonies extracellular polymers are secreted. However, flagella, which were observed in ...Continue Reading

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Citations

Sep 19, 2009·Die Naturwissenschaften·Ulrich Kutschera, Karl J Niklas
May 2, 2012·Journal of Experimental Botany·Ulrich Kutschera, Zhi-Yong Wang
Feb 26, 2014·Die Naturwissenschaften·L Doerges, U Kutschera
Mar 21, 2009·Journal of Applied Microbiology·R TrifonovaJ D van Elsas
Apr 25, 2014·International Journal of Systematic and Evolutionary Microbiology·Munusamy Madhaiyan, Selvaraj Poonguzhali
Mar 8, 2011·International Journal of Systematic and Evolutionary Microbiology·Munusamy MadhaiyanKeun-Chul Lee
Jan 8, 2009·International Journal of Systematic and Evolutionary Microbiology·Munusamy MadhaiyanTong-Min Sa
May 25, 2010·International Journal of Systematic and Evolutionary Microbiology·S SchauerU Kutschera
Nov 11, 2016·Plant Signaling & Behavior·Ulrich Kutschera, Rajnish Khanna
May 4, 2011·Conservation Biology : the Journal of the Society for Conservation Biology·Trevor A BranchRay Hilborn
Jul 6, 2019·Bioscience, Biotechnology, and Biochemistry·Yosef Hamba TolaAkio Tani
Jun 28, 2018·Theory in Biosciences = Theorie in Den Biowissenschaften·Ulrich Kutschera

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