diazotroph


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diazotroph

[dī′az·ə‚träf]
(microbiology)
An organism that carries out nitrogen fixation; examples are Clostridium and Azotobacter.
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It can be less than doubled, or it can be up to ten times more," says LaRoche, adding that such measurements depend heavily on the composition of the diazotroph community and provide only a snapshot of rates in a particular location and time.
Their analysis showed rhizobium strains of the diazotroph bacteria family increased the growth of the crops hugely, with barley harvests up by nearly three-quarters.
A better understanding of the colonization patterns and preferential micro-niches of diazotroph associated with soil-grown rice roots is needed to unravel the interactions and N-transfer processes between diazotrophs and the rice plant on a biologically meaningful micro-scale.
Diazotroph relationships directly and indirectly enrich the associated plants and soil with nitrogen such that the success of newly constructed or reclaimed wetlands may be fostered by inclusion of plant species known to harbor associative diazotrophs.
Studies on the soil bacterium Azotobacter vinelandii indicate that it yields hydrogen as a by-product of nitrogen fixation; and its characteristics such as high respiratory rates, the ability of expressing anaerobic proteins, and lower growth requirements project the possibility of bridging the diazotroph and hydrogenase.
2] reduction) in straw-amended wheat belt soils in response to diazotroph inoculation.
As part of their astounding research, the girls found a naturally-occurring bacterium in soil called diazotroph could speed up the germination of crops by 50%.
The most successful and widely studied inoculants are the diazotroph bacteria (Rhizobium, Bradyrhizobium, Sinorhizobium, Frankia) used for symbiotic fixation of [N.
rhizogenese addition to nitrogen fixation in root nodules of soybean is also a diazotroph of stimulate plant growth [6].
Azotobacter is another beneficial microorganism which is a non symbiotic, free living, aerobic nitrogen fixing diazotroph [55].
In Marine Pelagic Cyanobacteria: Trichodesmium and Other Diazotrophs (Carpenter, E.