ISSN:
1573-5036
Keywords:
Klebsiella
;
Endophyte
;
Pectinase
;
Pectate Lyase
;
Penetration
;
Plant
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract Diazotrophic Klebsiella oxytoca VN 13 was able to lyse pectate, but the lytic activity of cultures grown on non-selective media was weak, and the enzyme was located mainly inside the cells. A small fraction of the population (10-6 to 10-5) was able to grow in a selective medium with sodium polygalacturonate as sole carbon source, and produced increased amounts of the pectinolytic enzyme pectate lyase. When wheat seeds were inoculated with these bacteria, increased levels of this enzyme correlated with a higher rate of internal colonization of wheat roots and with stimulation of wheat growth resulting in higher biomass. This suggests that colonization occurs via lyzed pectin layers.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1004790122353
Permalink