Genetic manipulation of photosynthetic efficiency to increase strawberry yields Increasing

全球对粮食的需求不断增加，这主要是由于世界人口不断增长，这导致了开发高产作物品种的需要。转基因和模拟研究提供了令人信服的证据，表明增加碳代谢中的光合酶水平，例如Calvin-Benson循环，可能会影响产量。这些研究已经确定，光合作用碳同化是一个尚未开发的目标，可以提高光合作用效率和产量高达60%。最近，小麦的光合作用被证明可以使种子产量提高30%到40%。本项目的总体目标是：1.利用模式物种对光合作用的广泛知识和操作经验，培育出具有增强光合作用性能和提高产量的草莓植株；2.培育出具有Calvin-Benson循环、光呼吸和二氧化碳运输等多靶标酶水平的转基因草莓新品系；3.鉴定生物量和果实产量增加的草莓品系，并分析其对所选水果的风味和香气的影响。

Increasing global requirements for food, largely due to the growing world population, has led to the need to develop higher yielding crop varieties. Transgenic and modelling studies have provided compelling evidence that increasing the levels of photosynthetic enzymes in carbon metabolism e.g. Calvin-Benson cycle has the potential to impact yield. These studies have identified photosynthetic carbon assimilation as an untapped target to increase photosynthetic efficiency and yield by as much as 60%. Recently, manipulation photosynthesis in wheat was shown to boost seed yield by 30 to 40%. Objectives The overall aims of this project are: 1. to exploit the extensive knowledge of photosynthesis and experience gained from its manipulation in model species to produce strawberry plants with enhanced photosynthetic performance and increased yield; 2. to produce new transgenic strawberry lines with altered levels of multiple targets enzymes of the Calvin-Benson cycle, photorespiration and CO2 transport; 3. to identify strawberry lines with increased biomass and fruit yield and analyse the impact on the flavour and aroma profiles of selected fruit.