Plant “thermometer' triggers springtime growth 1

Plant “thermometer' triggers springtimegrowth by measuring night-time heat 1

植物如何通过调节自身温度适应春季生长

thermometer  [θəˈmɒmɪtə(r)]  温度计

词根 meter 测量   therm  热

27.The Cambridge scientists' discoveryof the 'thermometer molecule' caused surprise amongother scientists.

A部分第1段

An international team of scientists ledby the University of Cambridge has discovered that the “thermometer' moleculein plants

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28.The target for agriculturalproduction by 2050 could be missed.

D部分

'It is estimated that agriculturalyields will need to double by 2050,but climate change is a major threat to achieving this.

29.Wheat and rice suffer from a rise in temperatures.

D部分

Key crops such as wheat and rice are sensitive to high temperatures. Thermal stress reduces crop yields by around10% for every one degree increase intemperature

30.It may be possible to develop cropsthat require less water.

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31.Plants growfaster in sunlight than in shade.

E 部分第1段

During the day, sunlight activates the molecules,slowingdown growth. If a plant finds itself in shade,phytochromesare quickly inactivated- enabling it to growfaster to find sunlight again.

32.Phytochromes change their state atthe same speed day and night.

E 部分第1段

'Light-driven changes to phytochromeactivity occur very fast, in less than a second

E 部分第2段

At night, however, it's a different story.Instead of a rapid deactivation following sundown,the molecules gradually change from their active to inactive state.