Mind Matters Natural and Artificial Intelligence News and Analysis

TagEpigenetics

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close up photo of green leafed plant

If You Do Something to a Plant, Will It Remember?

Depends. Plants turn out to be more and more like animals. NOT like people but like animals

Plants, we are learning, have internal means of remembering and keeping track of things: In a study published in Nature Communications, researchers from Nara Institute of Science and Technology have revealed that a family of proteins that control small heat shock genes enables plants to ‘remember’ how to deal with heat stress… “Heat stress is often repeating and changing,” says lead author of the study Nobutoshi Yamaguchi. “Once plants have undergone mild heat stress, they become tolerant and can adapt to further heat stress. This is referred to as heat stress ‘memory’ and has been reported to be correlated to epigenetic modifications.” Epigenetic modifications are inheritable changes in the way genes are expressed, and do not involve changes in the…

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Aphrodisiac pill for libido and sexual drive

Can a Hormone Explain Why Humans Love Each Other?

Some researchers think they have zeroed in on an explanation, oxytocin

Some researchers have been trying to understand why mothers love their children: When it comes to biological mechanisms of empathy, scientists are particularly interested in oxytocin, the so-called “love hormone.” High oxytocin levels predict sensitive parenting, but it isn’t clear how the oxytocin-related gene might generate variation in empathy and parental behavior. One possible explanation is epigenetic changes to the gene — a way of altering gene function without changing the actual DNA sequence. Specifically, “DNA methylation” — the addition of a chemical group called the “methyl” group at specific locations — in the oxytocin gene (called OXT) has been associated with personality traits and brain structure in humans. This raises a question: can methylation of OXT influence empathy in…