07 May 2024

The Light Eaters: How the Unseen World of Plant Intelligence Offers a New Understanding of Life on Earth

Zoë Schlanger. Harper, $29.99 (304p) ISBN 978-0-06-307385-2

Schlanger, a staff writer at the Atlantic, debuts with an astounding exploration of the remarkable abilities of plants and fungi. Highlighting recent research suggesting many plants are “composites of interpenetrating forms of life,” Schlanger details Peruvian ecologist Ernesto Gianoli’s theory that the Chilean boquila vine, which changes the appearance of its leaves to mimic nearby plants, receives shape-shifting direction from microorganisms “hijacking and redirecting” the vine’s genes. Other plants appear capable of communication, Schlanger contends, explaining that the Sitka willow can “alter the contents of its leaves to be less nutritious” when threatened by hungry caterpillars and transmit airborne chemical signals prompting other trees to take similar defensive action before they’re attacked. Investigating whether plants can be said to have personalities, Schlanger describes ecologist Richard Karban’s ongoing research into whether differences in how strongly individual sagebrush plants respond to internal and external distress signals are consistent over time (“Natural-born scaredy-cats” might respond “wildly at the slightest disturbance”). There are mind-bending revelations on every page, and Schlanger combines robust intellectual curiosity with delicate lyricism (“Pearlescent wetness clings to everything like spider silk,” she writes of the Hawaiian cliffs where a botanist rappels to pollinate an endangered hibiscus). Science writing doesn’t get better than this. (May)

THE MYSTERIES OF PLANT ‘INTELLIGENCE’
Scientists are debating whether concepts such as memory, consciousness, and communication can be applied beyond the animal kingdom.
By Zoë Schlanger

The Atlantic
5 days ago

The Mysteries of Plant 'Intelligence' - The Atlantic

...But what exactly does it mean for a plant to be aware ? Consciousness was once seen as belonging solely to humans and a short list of nonhuman animals that clearly act with intention. Yet seemingly everywhere researchers look, they are finding that there is more to the inner lives of animals than we ever thought possible. Scientists now talk regularly about animal cognition; they study the behaviors of individual animals, and occasionally ascribe personalities to them.

Some scientists now posit that plants should likewise be considered intelligent. Plants have been found to show sensitivity to sound, store information to be accessed later, and communicate among their kind—and even, in a sense, with particular animals. We determine intelligence in ourselves and certain other species through inference—by observing how an organism behaves, not by looking for a psychological sign. If plants can do things that we consider indications of intelligence in animals, this camp of botanists argues, then why shouldn’t we use the language of intelligence to descriOR START A FREE TRIAL.

A Glowing Petunia Could Radicalize Your View of Plants
A bioluminescent petunia could help people recognize plants for the complex creatures they are.

The Atlantic