ISSN:
1573-5087
Keywords:
acetylene reduction activity (ARA)
;
Alnus glutinosa
;
Frankia
;
nodular metabolism
;
rhizobacteria
;
root development
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract The effects of 3 Bacillus and 7 Pseudomonas strains on development of the root system and nodular metabolism, evaluating CO2 production and acetylene reduction activity (ARA), of Alnus glutinosa, were studied. All experiments were done on nodulated plants (N) with the symbiont Frankia and on non-nodulated plants (NN). An increase in root length (RL) and root surface (RS) was detected when growth culture media from three different Bacillus free of bacteria were assayed, both in N and NN plants. However, Pseudomonas growth culture media reduced RS in N plants, and a decrease in RL parallel to an increase in RS in NN plants. Bacillus growth cultyre media caused an increase: and CO2 production while Pseudomonas culture media caused lower ARA and a noticeable increase in nodular respiration. Results are discussed considering nutritional and/or hormonal (Bacillus) or phytotoxic factors (Pseudomonas).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1005839029486
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