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Plants convert energy at lightning speed

Date:
March 2, 2014
Source:
Queen Mary, University of London
Summary:
A new way of measuring how much light a plant can tolerate could be useful in growing crops resilient to a changing climate, according to scientists.

A new way of measuring how much light a plant can tolerate could be useful in growing crops resilient to a changing climate, according to scientists from Queen Mary University of London.

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"This is the first time we have been able to quantify a plant's ability to protect itself against high light intensity," said Professor Alexander Ruban, co-author of the study and Head of the Cell and Molecular Biology Division at Queen Mary's School of Biological and Chemical Science.

Professor Ruban added: "A changing climate will lead to fluctuations in temperature, humidity, drought and light. Knowing the limits of how much sunlight a crop can happily tolerate could be valuable information for farmers or people who breed new plants."

Publishing in the journal Philosophical Transactions of the Royal Society B today (Monday 3 March) the scientists demonstrate a novel method that enables them to relate the photoprotective capacity of a plant to the intensity of environmental light by measuring the fluorescence of the pigment chlorophyll, which is responsible for absorbing sunlight.

Co-author Erica Belgio, also at Queen Mary's School of Biological and Chemical Science said: "The plants we used to measure the light varied in their capacity to protect themselves against high levels of intensity. We exposed them to gradually increasing levels of light, from the sunlight more common on a rainy day to the light you would find at noon on summer's day in the south of France and recorded the responses."

The researchers found the plants grown without the ability to respond quickly to high light intensity had a reduced capacity to protect themselves from damage.

"The photosynthetic apparatus in the plants is like the retina in human eyes -- it is sensitive to how much light can be soaked up," commented Professor Ruban.


Story Source:

The above story is based on materials provided by Queen Mary, University of London. Note: Materials may be edited for content and length.


Cite This Page:

Queen Mary, University of London. "Plants convert energy at lightning speed." ScienceDaily. ScienceDaily, 2 March 2014. <www.sciencedaily.com/releases/2014/03/140302195423.htm>.
Queen Mary, University of London. (2014, March 2). Plants convert energy at lightning speed. ScienceDaily. Retrieved March 3, 2015 from www.sciencedaily.com/releases/2014/03/140302195423.htm
Queen Mary, University of London. "Plants convert energy at lightning speed." ScienceDaily. www.sciencedaily.com/releases/2014/03/140302195423.htm (accessed March 3, 2015).

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