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Heat stress

For all organisms, heat means a state of stress and thus also for plants such as the vine shoot. Rising temperatures as a result of climate change lead to lower productivity of important crops. Heat throws cell metabolism out of balance and impairs photosynthesis, which is virtually stopped at over 40 °Celsius. Extreme heat can even be fatal for plants. For these reasons, plants have developed a variety of reaction mechanisms. Just like humans, plants also try to protect themselves from heat by evaporation, which leads to relatively rapid cooling. This process, called evaporation, is controlled by the stomata of the leaves

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