Profile

Even though plants use light to make their energy, if they get too much their leaves can get damaged, just like we get sunburnt.
But it’s an even bigger problem for plants because they can’t move to the shade or put sunscreen on! So I’m trying to stop plants getting too damaged by the sun so that they can grow bigger and produce more fruit, or grain, or vegetables for us to eat.
Usually, plants absorb sunlight using chlorophyll, and turn it into energy and water (photosynthesis). However, if they get too much light, the excess energy gets trapped  inside the leaf and can cause damage to the leaf. This can lead to bleaching, where the chlorophyll breaks down and the leaves turn white. This stops photosynthesis (a process called photoinhibition) and the plant can die, but usually it just leads to the plant getting stressed. Stressed plants produce fewer leaves, seeds and fruit, which means if you are growing the plants for food, you get less food!
This is a stressed plant and this is a happy plant of the same type. You can see how much difference stress makes!
My work concentrates on getting plants to be able to acclimate, which means that they can change in response to their environment. If plants can respond to use more light, they will get less stressed and produce more seeds, fruit and leaves. To make plants better at acclimating, I am looking for genes that can help and trying to understand how they work.
One gene that I have worked on a lot encodes a sugar transporter, which moves sugars in and out of the chloroplast. Too much sugar in the leaf stops photosynthesis, because the plant is essentially full and doesn’t need to make any more food. Stopping this process could help to reduce stress under high light conditions. I have created a genetically modified plant which can help us look at the stress response. 

My days vary depending on the time of year and the mood I am in! Over the winter I grow plants at the University Botanical Gardens and spend a lot of time outside. In the summer I tend to work more in the lab, looking at the genetics of the plant I work on.  Experiments can vary from measuring photosynthesis to manipulating DNA, and I’m always trying to come up with new ideas to test my hypotheses.
I also spend about half an hour each day gardening! My plants are grown under stressful light conditions so I have to make sure they don’t die too early for me to do experiments on them. I grow about 200 plants every six weeks, so there are a lot to look after.
I also teach students at the Manchester Museum about twice a month. This is running sessions on DNA for school groups coming into the museum, and I LOVE it! I also help to run a field course to Mallorca every year, which is lots of fun, even though it usually pours down for the whole week!