scholarly journals Association of nitrogen-fixing microorganisms in the surface of nodules in wild perennial leguminous plants Onobrychis transcaucasica and Onobrychis chorassanica

2020 ◽  
Author(s):  
B. R. Umarov
Keyword(s):  
Genetic Analysis ◽  
Central Asia ◽  
Root Nodule ◽  
Molecular Genetic ◽  
Molecular Genetic Analysis ◽  
Arid Zones ◽  
Nitrogen Fixing ◽  
Nodule Bacteria ◽  
Leguminous Plants ◽  
Root Nodule Bacteria

The results of molecular genetic analysis root nodule bacteria wild leguminous plants germinating in the Arid zones Central Asia can penetrate into various nitrogen-fixing microorganisms. Bacteria of plants Onobrychis transcaucasica and Onobrychis chorossanica origin are found bacteria in the class Alphaproteobacteria and some nitrogen-fixing bacteria which we are write were in the class of Betaproteobacteria.

Distribution, frequency of occurrence and symbiotic properties of the Australian native legume Trigonella suavissima Lindl. and its associated root-nodule bacteria

2010 ◽  
Vol 32 (4) ◽  
pp. 395 ◽  
Author(s):  
J. Brockwell ◽  
Catherine M. Evans ◽  
Alison M. Bowman ◽  
Alison McInnes
Keyword(s):  
Root Nodule ◽  
Clay Soils ◽  
Frequency Of Occurrence ◽  
Nitrogen Fixing ◽  
Nodule Bacteria ◽  
River Systems ◽  
Root Nodule Bacteria ◽  
North East ◽  
Inland River ◽  
Native Legume

Trigonella suavissima Lindl. is an Australian native legume belonging to the tribe Trifolieae. It is an ephemeral species that is widely distributed in the arid interior of the continent where it occurs, following periodic inundation, on clay soils of the watercourse country of the Channel Country (far-western Queensland, north-east South Australia and north-western New South Wales). T. suavissima is the only member of its tribe that is endemic to Australia. Likewise, its root-nodule bacteria (Sinorhizobium sp.) may be the only member of its taxonomic group (S. meliloti, S. medicae) that is an Australian native. The distribution and frequency of occurrence of T. suavissima and the size of soil populations (density) of Sinorhizobium were monitored at 64 locations along inland river systems of the Channel Country. Measurements were made of (i) the nitrogen-fixing effectiveness of the symbioses between T. suavissima and strains of its homologous Sinorhizobium and (ii) the nitrogen-fixing effectiveness of the symbioses between legumes symbiotically related to T. suavissima and diverse strains of Sinorhizobium. It was concluded that the distribution and frequency of occurrence of T. suavissima is soil related. The species is most widespread on fine-textured clay soils with deep, self-mulching surfaces and high moisture-holding capacity. By contrast, the occurrence of T. suavissima is sporadic in the upper reaches of the inland river systems where the soils are poorly structured clays with lower moisture-holding capacity. Sinorhizobium is most abundant where the plant is most common. The nitrogen-fixing symbioses between T. suavissima and strains of Sinorhizobium isolated from soils across the region were consistently effective and often highly effective. Some of these strains fixed a little nitrogen with lucerne (Medicago sativa L.). T. suavissima also had some symbiotic (nitrogen-fixing) affinity with an exotic Trigonella (T. arabica Del.). The economic value of T. suavissima (and its symbiosis with Sinorhizobium) to the beef industry in the Channel Country is discussed.

scholarly journals Investigations on the root nodule bacteria of leguminous plants

1936 ◽  
Vol 30 (3) ◽  
pp. 377-381 ◽  
Author(s):  
Artturi Ilmari Virtanen ◽  
Tauno Laine
Keyword(s):  
Root Nodule ◽  
Nodule Bacteria ◽  
Leguminous Plants ◽  
Root Nodule Bacteria

scholarly journals Investigations on the root nodule bacteria of leguminous plants

1939 ◽  
Vol 33 (4) ◽  
pp. 412-427 ◽  
Author(s):  
Artturi I. Virtanen ◽  
T. Laine
Keyword(s):  
Root Nodule ◽  
Nodule Bacteria ◽  
Leguminous Plants ◽  
Root Nodule Bacteria

ROOT NODULE BACTERIA OF SOME TROPICAL LEGUMINOUS PLANTS

Soil Science ◽  
1936 ◽  
Vol 42 (1) ◽  
pp. 61-77 ◽  
Author(s):  
O. N. ALLEN ◽  
ETHEL K. ALLEN
Keyword(s):  
Root Nodule ◽  
Nodule Bacteria ◽  
Leguminous Plants ◽  
Root Nodule Bacteria

ROOT NODULE BACTERIA OF SOME TROPICAL LEGUMINOUS PLANTS

Soil Science ◽  
1939 ◽  
Vol 47 (1) ◽  
pp. 63-76 ◽  
Author(s):  
O. N. ALLEN ◽  
ETHEL K. ALLEN
Keyword(s):  
Root Nodule ◽  
Nodule Bacteria ◽  
Leguminous Plants ◽  
Root Nodule Bacteria

Investigations on the root nodule bacteria of leguminous plants. XVII. Continued investigations on the effect of air content of the medium on the development and function of the nodule

1936 ◽  
Vol 26 (2) ◽  
pp. 281-287 ◽  
Author(s):  
Artturi I. Virtanen ◽  
Synnöve v. Hausen
Keyword(s):  
Root Nodule ◽  
Nodule Bacteria ◽  
Leguminous Plants ◽  
Liquid Cultures ◽  
Root Nodule Bacteria ◽  
Air Content ◽  
And Function ◽  
Distinct Increase

The effect of the air content of the medium on the development and function of the nodule was studied with sterile cultures of peas inoculated with their appropriate strain of nodule bacteria.In water cultures the plant grows well without added nitrogen, even though all nodules are submerged, if air is bubbled through the medium during the period of growth. Abundant nodulation occurs also in nonaerated liquid cultures; the nodules, however, are much smaller than in aerated cultures, and the plant grows poorly. Subsequent aeration of such cultures results in a distinct increase in the size of the nodules and improvement in the growth of the plant.Nodulation is completely prevented by passing a stream of gaseous N through the medium. That oxygen is indispensable for the function of the nodules is shown also by the fact that the peas grow excellently on added nitrogen in non-aerated cultures.

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