Occurrence of the endophytic diazotrophs Herbaspirillum spp. in roots, stems, and leaves, predominantly of Gramineae

Since the first description of Herbaspirillum seropedicae in 1986, few data have been published on this diazotroph, possibly due to difficulties in isolating it from soil. In the present study we found that this bacterium seems to be an obligate endophyte which has been isolated from roots, stems, a...

Full description

Saved in:
Bibliographic Details
Published in:Biology and fertility of soils 1996-02, Vol.21 (3), p.197-200
Main Authors: Olivares, F.L, Baldani, V.L.D, Reis, V.M, Baldani, J.I, Dobereiner, J
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Animal, plant and microbial ecology
Bacterial plant pathogens
Biochemistry and biology
Biological and medical sciences
Chemical, physicochemical, biochemical and biological properties
colonization
endophytes
Fundamental and applied biological sciences. Psychology
Generalities. Techniques. Transmission, epidemiology, ecology. Antibacterial substances, control
Hapludults
Herbaspirillum rubrisubalbicans
Herbaspirillum seropedicae
leaves
Microbial ecology
Microbiology
mortality
nitrogen-fixing bacteria
obligate endophytes
Physics, chemistry, biochemistry and biology of agricultural and forest soils
Phytopathology. Animal pests. Plant and forest protection
Poaceae
rhizosphere
roots
sandy soils
Soil
Soil science
Spirillaceae
stems
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Since the first description of Herbaspirillum seropedicae in 1986, few data have been published on this diazotroph, possibly due to difficulties in isolating it from soil. In the present study we found that this bacterium seems to be an obligate endophyte which has been isolated from roots, stems, and leaves of a large number of samples of more than 10 different species of the Gramineae family, but only exceptionally from other plants. H. rubrisubalbicans, previously misnamed as "Pseudomonas" rubrisubalbicans, and known as a mild pathogen of sugarcane causing mottled stripe disease, confirms the endophytic habitat of this genus. This species occurs in roots, stems, and leaves of sugarcane and seems to be restricted to this crop. Inoculation of strains from both species into soil in high numbers resulted in a rapid decline in their numbers. In only 30 days the population of Herbaspirillum spp. in soil decreased below detection limits (
ISSN:0178-2762
1432-0789
DOI:10.1007/bf00335935