Isolation and characterization of rhizosphere bacteria with potential for biological control of weeds in vineyards

Journal of Applied Microbiology
R D Flores-Vargas, G W O'Hara

Abstract

Deleterious rhizosphere inhabiting bacteria (DRB) have potential to suppress plant growth. This project focuses on the isolation of DRB with potential for development as commercial products for weed control. Bacteria were isolated from the rhizosphere, rhizoplane, and endorhizosphere of seedlings and mature plants of wild radish (Raphanus raphanistrum), annual ryegrass (Lolium rigidum) and capeweed (Arctotheca calendula) growing in vineyards in the Swan Valley, Western Australia. A majority (81.5%) of the 442 strains was obtained from either rhizospheres or rhizoplanes. Rapid screening techniques were developed to evaluate in the laboratory and glasshouse the effects of bacteria on plants. Strains were screened in the glasshouse for deleterious effects on annual ryegrass, wild radish, grapevine rootlings (Vitis vinifera) and the legume cover crop subterranean clover (Trifolium subterraneum). Three strains were identified using the Biolog system and 16S rRNA gene sequencing as two strains of Pseudomonas fluorescens (WSM3455 and WSM3456) and one strain of Alcaligenes xylosoxidans (WSM3457). One of the P. fluorescens (WSM3455) strain produced hydrogen cyanide, an inhibitor of plant roots and a broad-spectrum antimicrobial compound...Continue Reading

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Citations

Jan 26, 2007·Biodegradation·Sarfraz HussainAzeem Khalid
Jul 7, 2009·Annual Review of Microbiology·Ben Lugtenberg, Faina Kamilova
Sep 6, 2007·PloS One·Simon L ZellerBernhard Schmid
Nov 21, 2014·Journal of Applied Microbiology·R E Zdor
Jun 11, 2009·FEMS Microbiology Ecology·Ulisses Nunes da RochaJan Dirk van Elsas
May 10, 2017·Environmental Science and Pollution Research International·Tasawar AbbasZubair Aslam
Jun 5, 2018·Critical Reviews in Biotechnology·Swati TyagiPratyoosh Shukla
Jun 24, 2017·Plant, Cell & Environment·Birgit PiechullaMarco Kai
Oct 28, 2019·The New Phytologist·Paolina Garbeva, Laure Weisskopf
May 7, 2021·Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]·Candelario Verdugo-NavarreteJuan C Martínez-Álvarez
Dec 29, 2018·Environmental Science & Technology·Eric McGivneyAstrid Avellan

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