Survival and Symbiotic Effectivity of Lyophilized Root Nodule Bacteria

Survival of bacteria in lyophilized plasma.

Although lyophilization reduces the bacterial population in plasma, some species survive for several months. Sensitivity or resistance to lyophilization in plasma is a characteristic of each morphological type, with gram-negative species being more sensitive to destruction than cocci or sporulating gram-positive species. Reconstituted preparations of lyophilized plasma must be incubated for 24 ...

Proteomic insights into intra- and intercellular plant-bacteria symbiotic association during root nodule formation

Over the last several decades, there have been a large number of studies done on the all aspects of legumes and bacteria which participate in nitrogen-fixing symbiosis. The analysis of legume-bacteria interaction is not just a matter of numerical complexity in terms of variants of gene products that can arise from a single gene. Bacteria regulate their quorum-sensing genes to enhance their abil...

[Root nodule bacteria on leguminous plants].

The Legume Root Nodule: From Symbiotic Nitrogen Fixation to Senescence

Biological nitrogen fixation (BNF) is the biological process by which the atmospheric nitrogen (N2) is converted to ammonia by an enzyme called nitrogenase. It is the major source of the biosphere nitrogen and as such has an important ecological and agronomical role, accounting for 65 % of the nitrogen used in agriculture worldwide. The most important source of fixed nitrogen is the symbiotic a...

Variation within strains of clover nodule bacteria in the size of nodule produced and in the effectivity of the symbiosis.

Strains of Rhizobium may be distinguished in their behavior in symbiosis by their ability to infect a given host plant, as well as by the types and numbers of nodules produced and by the nodules' effectiveness in benefiting the host through nitrogen fixation. Allen and Baldwin (1931) have reviewed the changes which strains of Rhizobium have been observed to undergo, and the more important of th...