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学术报告 2019年04月22日(星期一)上午10:00 报告人:Dr. Brian A. Larkins
来源:本站    发布时间:2019-4-12 17:09:09    点击数量:137
题 目: Maize kernel development: Still much to learn!
报告人: Dr. Brian A. Larkins, Associate Vice Chancellor for Life Sciences, Emeritus University of Nebraska
              Brian Larkins CV.pdf
时 间: 2019年4月22日(星期一) 上午10:00
地 点: 中国农业大学  新植保楼  一层报告厅

Abstract:
Besides being an important source of food and feed for centuries, maize has also been a model genetic system for understanding cereal seed development. Maize genetic research dates from as early as the 1860s, with studies by Gregor Mendel, and it began to flourish in the 1930s with work on chromosome mapping by R.A. Emerson and his colleagues. Biochemical genetic studies of normal and mutant phenotypes commenced int the 1950s, coincident with the advent of electrophoretic separation of enzymes via agarose and acrylamide gels. But it really took off in the 1970s and 1980s through the application of molecular biology and recombinant DNA techniques. Initially, genes encoding zein seed storage proteins provided a model system that documented the existence of multigene families and transcription factors that regulate their expression. As DNA cloning and sequencing technologies improved, many aspects of kernel development were investigated, including genes associated with embryo development, the function of specialized endosperm cell types, processes associated with storage metabolite (starch, oil, storage proteins) accumulation, and plant and seed interactions. Today, most every type of kernel mutant and seed tissue has been investigated by gene cloning, often through transposon-directed mutagenesis.  But while literally thousands of publications exist describing many aspects of maize kernel development, many important questions remain to be answered. I provide an overview of what we know about many aspects of kernel development, and identify important questions that remain to be answered.
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