Cultural conditions affecting Azospirillum brasilense cell aggregation and adsorption to maize roots

Eli Zaady, Yaacov Okon

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Sugars. EDTA and trypsin were tested for their effect in preventing aggregation of Azospirillum brasilense Cd cell suspension grown on malate as a C-source. d-Fructose (25-30 mM) strongly inhibited cell aggregation at various pH levels (5.0-8.4). Treatment of malate-grown cells with 20 mM d-fructose for 7.5 min. or with maize root extracts, significantly promoted the subsequent adsorption of Azospirillum cells to maize roots. No enhancement of adsorption could be observed when roots had been treated with d-fructose. The highest cell adsorption to roots was obtained with Azospirillum grown on d-fructose as C-source in combination with cells that had been exposed to root extract.

Original languageEnglish
Pages (from-to)1103-1107
Number of pages5
JournalSoil Biology and Biochemistry
Volume22
Issue number8
DOIs
StatePublished - 1 Jan 1990
Externally publishedYes

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