Essay --

The main questions addressed in this look for were based on the Medicago Truncatula- Sinorhizobium symbiosis that homunculus cost-plus (non-reproducing bacteria) nodules. a) to see whether M. truncatula displays partner choice in picking the most economic rhizobia between nitrogen meliorate and non fixing bacteria in two pre- infection and post- infection scenarios. b) the authors in any case wanted to see if leguminous plants can transmute their apportioning of carbon photosyntates to each nodule depending on how efficient the rhizobia is in each nodule. Authors of this article did this research because this symbiotic relationship is widely studied, simply all the research done so far have been on determinate (bacteria is able to reproduce) nodules1 rather than inconclusive nodules. In previous research it was found that determinate nodules utter two partner choice and allocation differentiation between efficient and non- efficient rhizobia. Answer2 Authors hypothesi zed that in Medicago Truncatula- Sinorhizobium that form indeterminate nodules will try partner choice in both pre infection and post infection scenarios and select for the most efficient rhizobia partner. They also hypothesized that the legume will show differential allocation of carbon photosyntates in each nodule depending on the number of nitrogen fixing and non fixing rhizobia in each nodule. Answer3Figure What method(s) gave this data?What do these data show? Figure1aThe authors performed a split- root experiment to obtain data based on three different parameters and then utilize MANOVA analyses to compare the three parameters used in the experiment. They used Post hoc on all the measurements to use it to interpret the differences. ANOVA to compare the mean of the two strains used... ...thors hypothesis. However, they were not able to show difference in the resource allocation to each nodule depending on the efficiency of bacteria in each nodule. Therefore they concluded t hat approve is not present is not present in all legume unlike the partner choice.Answer5 The authors think that the discrepancy in the results of the previous researches and theirs regarding allocations by the legume to nitrogen fixing and non- fixing bacteria is that the authors used M. truncatula- sinorhizobium indeterminate nodules whereas other researchers used either soybean or yellow render lupin determinate nodules. Since this is the first time such model is presented I think that there should be more researches focusing only the sanctions by legumes to the bacteria to better understand the symbiosis between M. truncatula - Sinorhizobium and sanctions in general.