The economic and ecological importance of the symbiosis of soybean with Bradyrhizobium japonicum strains is significant in several countries, particularly Brazil; however, up to now, only one complete and a draft genome for this species are available. In this study, we have obtained a proteomic reference map of B. japonicum strain CPAC 15 (=SEMIA 5079) - used in commercial inoculants for application to soybean crops in Brazil - grown under in vitro conditions. CPAC 15 belongs to the same serogroup as strain USDA 123, and both are known as the soybean bradyrhizobial strains with highest competitive and saprophytic known so far. To increase the precision of the proteomic map, we compared whole-cell 2-D protein gel-electrophoresis profiles of CPAC 15 and of two related strains. One-hundred and seventy representative spots, selected from the three profiles, were analyzed by MS. In total, 148 spots were successfully identified as cytoplasmic and periplasmic proteins belonging to diverse metabolic pathways, several of them related to the saprophytic and competitive abilities of CPAC 15. We attributed probable functions to 26 hypothetical proteins, including those involved in polyhydroxybutyrate metabolism, beta-lactamase, stress responses and aromatic compound degradation, all with high probability of being related to the saprophytic ability of CPAC 15. In addition, by providing valuable information about expressed proteins in B. japonicum in vitro, our results emphasize the importance of accurate functional annotation of uncharacterized expressed proteins, improving considerably our understanding of the legume-rhizobia symbiosis.
We demonstrated the
Legitimacy of the method by applying it to a shallow quantum dot with a finite
Round well and by comparing the results with their analytic counterparts. The
Developed method was applied to the entanglements in double quantum dots (DQDs)
Consisting of two harmonic finite-wells. Th...
We should be to promote the use of traditional medicine. Traditional Chinese acupuncture has a history over 3000 years and is effective in the treatment of many conditions with few side effects. Acupuncture, an intrinsic part of traditional Chinese medicine (TCM), which utilizes fine needles to pier...
We hypothesise that term frequencies may yield useful information for
Scientometric analysis. In our work we ask if word features in combination with
Bayesian analysis allow well-founded science mapping studies. This work goes
Back to the roots of Mosteller and Wallace's (1964) statistical text anal...
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