Molecular Genetics of Nodulation Control in Legumes скачать в хорошем качестве

Molecular Genetics of Nodulation Control in Legumes

Professor Peter M. Gresshoff QAAFI Science Seminar -- 27 May 2014 http://www.uq.edu.au/agriculture/pete... Most legume plants, such as soybean, are capable of nodulation, that is development of de novo organs called nodules in which the inducing bacterium, broadly called Rhizobium, is captured to allow complex differentiation of both plant and bacterium to facilitate symbiotic nitrogen fixation. This has immense economic as well as ecological and environmental benefits, as nitrogen fertiliser demand is significantly reduced. The main questions are: how are these structures induced by the bacterium? What genes do legumes possess to facilitate that process? What genes does the plant use to control the development of these nodule structures? We have used diverse genetic, molecular and physiological methods to generate a functional impression of these overall processes. The seminar will high-light discoveries made by the speaker's research effort over the last 30 years, leading to an in-depth understanding of key processes. Sadly, as in all science, this is just a beginning, and future insights are hoped to elucidate the inability of non-legumes to enter this nitrogen fixation symbiosis.