Measurement of a possible signal for nitrogen starvation in a cyanobacterium-plant symbiosis
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چکیده
One of the greatest advances in agriculture (and thus in human civilization) occurred in the middle of the 20 century, when strains of crop plants were developed that allowed considerably greater yields, at the expense of high inputs of nitrogenous fertilizer. The resulting increase in the use of nitrogenous fertilizers came at a great cost, however. As much as 1% of the total global energy budget is used to produce a single chemical ammonia. Just as important, the use of nitrogenous fertilizers has wreaked havoc on the environment, as the eutrophication of waterways fed by agricultural runoff has drastically altered their ecology.
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Nitrogen-fixing Rhizobium-legume symbiosis: are polyploidy and host peptide-governed symbiont differentiation general principles of endosymbiosis?
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