Study Shows Plants Have a Memory

Study Shows Plants Have a Memory

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Unlike animals, plants don’t have the luxury to move around which is why they need to learn faster to adapt.

A study was done by researchers at The University of Western Australia’s Centre for Evolutionary Biology has shown that plants – mimosa pudica- retained a learnt behavior.

Mimosa pudica or touch-me-not plant (also the humble plant) folds its leaves when touched. Scientists believe that the plant movement is a defense mechanism against herbivores. Grazing animals are less likely to want to eat shriveled leaves than succulent ones.

For the study, researchers trained Mimosa plants’ short and long-term memories by dropping water droplets at regular intervals. Mimosa leaves fold when a drop falls on them.

The scientists show how Mimosa plants stopped closing their leaves when they learnt that the repeated disturbance had no real damaging consequence.

Researchers found that plants seemed to be learning faster in unfavourable environments such as low light. Also, the plants were able to remember this learnt behaviour several weeks after the test.

“Plants may lack brains and neural tissues but they do possess a sophisticated calcium-based signally network in their cells similar to animals’ memory processes,” researchers wrote, according to a news release.

The study is published in the journal Oecologia.

Featured image source

Sources nytimessci-news

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