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Description |
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Rhizobium, Bradyrhizobium, Mesorhizobium,
Sinorhizobium and Azorhizobium-known as Rhizobia-are
Gram-negative, nitrogen-fixing bacteria of agronomic importance because they
perform nitrogen-fixing symbiosis with leguminous plants. They are responsible
for the world’s largest portion of fixed atmospheric nitrogen.
Bradyrhizobium japonicum has been used since 1957 in molecular
genetics, physiology, and ecology due to its excellent ability in symbiotic
nitrogen fixation. Nodule formation and the subsequent nitrogen-fixation result
from a series of interactions controlled by the exchange of molecular signals
between symbiotic bacteria and host plants followed by expression of genes from
both symbiotic partners. B. japonicum is able to form determinant-type globular
nodules and perform nitrogen-fixation on soybeans (Ref.1 & 2). Glutathione
metabolism in B. japonicum involves both the synthesis of Glutathione
and its [...] |
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