Скачать с ютуб Fertilisers & nitrogen-fixing bacteria in cereals - Giles Oldroyd 🦠🌾 в хорошем качестве

Fertilisers & nitrogen-fixing bacteria in cereals - Giles Oldroyd 🦠🌾

Legumes (beans and pulses) associate with nitrogen-fixing bacteria to provide the plant with nitrogen. In contrast, cereals rely on capturing nitrates from the soil, greatly limiting crop productivity. As such, agricultural systems are reliant on the application of inorganic nitrogen fertilisers to greatly enhance yield. But these nitrogen fertilisers account for a significant proportion of fossil fuel usage in food production and the major source of pollution from agriculture. Here Giles Oldroyd introduces his work on nitrogen-fixing bacteria and its potential benefits. He discusses the environmental issues around the large scale usage of inorganic fertilisers in agriculture, the challenge of scientific research and discovery, and about the exciting opportunities for the next generation of scientists. 0:00 Introduction 0:26 Fertilisers & food security 0:53 The problem with fertilisers 1:46 Legumes & nitrogen-fixing 2:42 Nitrogen-fixing in cereal crops 4:10 How science works 6:04 Looking to the future Speaker profile: Prof Giles Oldroyd studies the mechanisms by which some species of plants are capable of forming beneficial interactions with nitrogen-fixing bacteria, which provide a natural source of nitrogen for plant growth. A long-term aim of this research is to reduce agricultural reliance on nitrogen fertilisers and he currently heads an international programme funded by the Bill and Melinda Gates Foundation to explore the feasibility of engineering nitrogen-fixing cereals. He completed his PhD in 1998 at the University of California, Berkeley, studying plant/pathogen interactions, and then moved to Stanford University, USA, to work on nitrogen fixation in the laboratory of Prof Sharon Long. He has been an independent researcher at the John Innes Centre since 2002. Filmed at the Gatsby Plant Science Summer School, 2015.