Plants are also very cherished
Plants have a harsh life because they must always cope with constraints in the environment such as light, lack of water, salinity of the soil, temperature or resistance to different types of bacteria.
Plants have a harsh life because they must always cope with constraints in the environment such as light, lack of water, salinity of the soil, temperature or resistance to different types of bacteria.
Arabidopsis Thaliana
(Photo: kuleuven-kortrijk)
Biologists know well that plants are very adaptable. Heat, pathogens and other stimuli can increase mutations and repair genes in plants.
Researchers by Dr. Barbara Hohn of Friedrich Miescher Medical Research Institute (Switzerland) have demonstrated that Arabidopsis Thaliana, a cruciferous plant (cabbage, radish) recorded in memory of the events stress and transmission to descendants the ability to adapt to difficult conditions.
To study this phenomenon, Ms. Hohn and her colleagues exposed Arabidopsis Thaliana to an ultraviolet ray or a bacterial protein.
In both cases, the plant reacted by increasing the number of exchanges between two identical gene segments to create genetic diversity . Thanks to this process, lesions in two DNA fragments due to ionizing radiation can be repaired. The researchers noted that this repair ability has been transmitted to the next 4 generations of plants.
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