Microbial populations and activities in the rhizoplane of rock-weathering desert plants. I. Root colonization and weathering of igneous rocks

Plant Biology
M Esther PuenteV K Lebsky

Abstract

Dense layers of bacteria and fungi in the rhizoplane of three species of cactus (Pachycereus pringlei, Stenocereus thurberi, Opuntia cholla) and a wild fig tree (Ficus palmeri) growing in rocks devoid of soil were revealed by bright-field and fluorescence microscopy and field emission scanning electron microscopy. These desert plants are responsible for rock weathering in an ancient lava flow at La Purisima-San Isidro and in sedimentary rock in the Sierra de La Paz, both in Baja California Sur, Mexico. The dominant bacterial groups colonizing the rhizoplane were fluorescent pseudomonads and bacilli. Seven of these bacterial species were identified by the 16S rRNA molecular method. Unidentified fungal and actimomycete species were also present. Some of the root-colonizing microorganisms fixed in vitro N(2), produced volatile and non-volatile organic acids that subsequently reduced the pH of the rock medium in which the bacteria grew, and significantly dissolved insoluble phosphates, extrusive igneous rock, marble, and limestone. The bacteria were able to release significant amounts of useful minerals, such as P, K, Mg, Mn, Fe, Cu, and Zn from the rocks and were thermo-tolerant, halo-tolerant, and drought-tolerant. The microbial ...Continue Reading

References

Jul 1, 1990·Journal of Nurse-midwifery·H V Burst
Jun 1, 1990·Jinrui idengaku zasshi. The Japanese journal of human genetics·H X DengN Niikawa
Mar 1, 1983·The Journal of the Acoustical Society of America·M Florentine, A J Houtsma
Mar 11, 1998·The Journal of Arthroplasty·M D Ries
Apr 16, 1998·Journal of Korean Medical Science·J LeeS K Lee
Nov 19, 2002·Die Naturwissenschaften·Angel E CarrilloYoav Bashan
Feb 26, 1982·Science·E I Friedmann
Jun 1, 1980·Microbial Ecology·E I Friedmann, A P Kibler

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Citations

Feb 3, 2006·Die Naturwissenschaften·Laurence A J Garvie
Oct 30, 2012·Applied and Environmental Microbiology·Shamayim T Ramírez-PueblaEsperanza Martínez-Romero
Feb 8, 2006·Applied and Environmental Microbiology·Christophe CalvarusoPascale Frey-Klett
Nov 10, 2013·PloS One·Wenming He, Fang Chen
Aug 19, 2014·Nature Communications·Sara PalacioJuan Pedro Ferrio
Feb 24, 2016·Frontiers in Microbiology·Citlali Fonseca-GarcíaLaila P Partida-Martínez
Feb 15, 2011·Research in Microbiology·Stéphane UrozMarie-Pierre Turpault
Aug 8, 2009·Trends in Microbiology·Stéphane UrozPascale Frey-Klett
Mar 17, 2016·Journal of Experimental Botany·Larry M YorkMalcolm J Bennett
Jun 29, 2005·Journal of Microbiological Methods·M Esther PuenteYoav Bashan
Aug 21, 2014·Journal of Basic Microbiology·Luciana P Di SalvoInés E García de Salamone
Aug 11, 2015·Frontiers in Microbiology·Nicholas OteinoDavid N Dowling
Jan 3, 2013·Microbiological Research·Vanessa Nessner KavamuraItamar Soares de Melo
May 25, 2005·Journal of Experimental Botany·José-Miguel BareaConcepción Azcón-Aguilar
Oct 21, 2009·Environmental Microbiology·Sara BorinDaniele Daffonchio
Jun 13, 2020·Current Microbiology·Rajinder Kaur, Sukhminderjit Kaur

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