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Wax helps plants to survive in the desert

ScienceDaily (April 29, 2019)

Titre : Wax helps plants to survive in the desert

ScienceDaily (April 29, 2019)

Résumé
The leaves of date palms can heat up to temperatures around 50 degrees Celsius. They survive thanks to a unique wax mixture that is essential for the existence in the desert.

The plant skin is not a continuous layer that would extend over the whole leaf. It contains numerous pores, called stomata, which can open and close. The plant "feeds" through these stomata. Riederer : "it thereby uptakes the carbon dioxide the plant needs for photosynthesis." The problem is that whenever the pores open to acquire carbon dioxide, water also evaporates. Therefore, desert plants, in particular, are continually undergoing a balancing process : do they uptake carbon dioxide to grow further, or do they close the pores to retain the precious water ? According to Riederer, every desert plant decides a little differently.

Story Source  : University of Würzburg

Annonce (ScienceDaily)

Page publiée le 6 juin 2020