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Titolo:
THE INFLUENCE OF EXTENSIFICATION IN GRASSLAND MANAGEMENT ON THE POPULATIONS OF MICROORGANISMS IN THE PHYLLOSPHERE OF GRASSES
Autore:
BEHRENDT U; MULLER T; SEYFARTH W;
Indirizzi:
CTR AGR LANDSCAPE & LAND USE RES MUNCHEBERG,INST MICROBIAL ECOL & SOIL BIOL PAULINENAUE GERMANY
Titolo Testata:
Microbiological research
fascicolo: 1, volume: 152, anno: 1997,
pagine: 75 - 85
SICI:
0944-5013(1997)152:1<75:TIOEIG>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEASONAL-CHANGES; ENDOPHYTIC BACTERIA; LEAVES; GENUS;
Keywords:
GRASSLAND MANAGEMENT; EPIPHYTIC MICROORGANISMS; PHYLLOSPHERE; COMMUNITY COMPOSITION; HETEROTROPHIC BACTERIA; IDENTIFICATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
50
Recensione:
Indirizzi per estratti:
Citazione:
U. Behrendt et al., "THE INFLUENCE OF EXTENSIFICATION IN GRASSLAND MANAGEMENT ON THE POPULATIONS OF MICROORGANISMS IN THE PHYLLOSPHERE OF GRASSES", Microbiological research, 152(1), 1997, pp. 75-85

Abstract

Comparing different methods of grassland management, the microbial community of grasses was analysed throughout the growing season. The quantitative development of heterotrophic bacteria, yeasts, filamentous fungi, streptomycetes and Listeria has been investigated. Furthermore, the community structure of heterotrophic bacteria was analysed by identifying isolated strains by means of classical biochemical and morphological examination supported by an application of multitest systems based on enzymatic reactions (Biolog, API). The population of heterotrophic bacteria and filamentous fungi was influenced by the age of plant material as well as by the density in the field. Thus, bacteria and fungi reached significantly larger numbers on plants of the late cut utilization (first cut at the beginning of July) in comparison with the regrowth of conventional cutting in mid May. These higher densities of micro-organisms exceeded threshold values that has been fixed for feedstuffs and therefore suggest an affect on the forage quality of this material. The population of yeasts neither showed a continual development over the season nor seemed to be influenced by any kind of management. Streptomycetes were only determined in larger numbers at the beginning of sampling in April, followed by a sporadical occurrence in the following course of investigation. Species of the genera Listeria havenot been found at any time of sampling. The community structure of heterotrophic bacteria was numerically predominated by the genera Pseudomonas, Stenotrophomonas, Pantoea, Clavibacter and Curtobacterium. Generally, the population was characterized by low diversity. An influenceof management on the composition of bacteria did not become obvious.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 08:47:00