botany

New critique debunks claim that trees can sense a solar eclipse

botany, Debunking, plant behavior, plant communication, Science / Mike M. / February 6, 2026

“He puts forward logical alternative hypotheses,” said Cahill of Novoplansky’s critique. “The original work should have tested among a number of different hypotheses rather than focusing on a single interpretation. This is in part what makes it pseudoscience and promoting a worldview.”

Granted, “[p]lants have extensive and well established mechanisms of communication, with that of volatiles being the most well studied and understood,” he added. “There is also growing recognition that root exudates play a role in plant-plant interactions, though this is only now being deeply investigated. Nothing else, communication through mychorriza, has withstood independent investigation.”

Chiolerio and Gagliano stand by their research, saying they have always acknowledged the preliminary nature of their results. “We measured [weather-related elements like] temperature, relative humidity, rainfall and daily solar radiation,” Chiolerio told Ars. “None of them shows strong correlation with the transients of the electrome during the eclipse. We did not measure environmental electric fields, though; therefore, I cannot exclude effects induced by nearby lightnings. We did not have gravitational probes, did not check neutrinos, cosmic rays, magnetic fields, etc.”

“I’m not going to debate an unpublished critique in the media, but I can clarify our position,” Gagliano told Ars. “Our [2025] paper reports an empirical electrophysiological/synchrony pattern in the eclipse window, including changes beginning prior to maximum occultation, and we discussed candidate cues explicitly as hypotheses rather than demonstrated causes. Describing weather/lightning as ‘more parsimonious’ is not evidence of cause. Regional lightning strike counts and other proxies can motivate a competing hypothesis, but they do not establish causal attribution at the recording site without site-resolved, time-aligned field measurements. Without those measurements, the lightning/weather account remains a hypothesis among other possibilities rather than a supported or default explanation for the signals we recorded.”

“We acknowledged the limited sample size and described the work as an initial field report; follow-up work is ongoing and will be communicated through peer-reviewed channels,” Gagliano added. As for the suggestion of pseudoscience, “I won’t engage with labels; scientific disagreements should be resolved with transparent methods, data, and discriminating tests.”

“It seems that the public appeal is something particularly painful for the colleagues who published their opinion on Trends in Plant Science,” Chiolerio said. “We did not care about public appeal, we wanted to share as much as possible the results of years of hard work that led to interesting data.”

DOI: Trends in Plant Science, 2026. 10.1016/j.tplants.2025.12.001 (About DOIs).

DOI: A. Chiolerio et al., Royal Society Open Science, 2025. 10.1098/rsos.241786 (About DOIs).

New critique debunks claim that trees can sense a solar eclipse Read More »

Watch this cucumber squirt out its seeds at ballistic speeds

ballistics, Biomechanics, botany, rapid plant movement, Science, seed dispersion, squirting cucumbers / Tim Belzer / July 9, 2025

Take a look at squirting cucumber explosive seed dispersal in real time and slowed down. Credit: Helen Gorges/CC BY-NC-ND

One doesn’t normally associate ballistics with botany, but most of us don’t study “squirting” cucumbers—so called because they disperse their seeds by explosively propelling them out into the world. Scientists took a series of high-speed videos, both in the wild and in the lab, to learn more about the underlying biomechanics of this plant’s method of seed dispersal. Graduate student Helen Gorges of Kiel University’s Zoological Institute in Germany presented the findings at the Society for Experimental Biology Annual Conference in Antwerp, Belgium.

Also known as the “noli me tangere,” aka “touch me not,” the squirting cucumber (Ecballium elaterium) is often considered a weed or invasive species, although in some regions it’s viewed as ornamental. Fun fact: The fruit extract is a powerful laxative. If swallowed or inhaled through the nose, it can be poisonous, causing edemas and necrosis of the nasal mucosa, among other complications. That same fruit, once ripened, can squirt out a stream of mucus-like liquid containing seed pods at high speeds—an example of rapid plant movement.

As glucosides in the sap of the fruit’s tissue cells build up, so does the internal pressure, eventually causing the fruit to detach from the stalk. At that point, the pericarp contracts, and both the fruit and the seeds are violently expelled through the resulting hole. The squirting action is further aided by structural changes in the fruit as it dehydrates and its cells coil, bend, or twist in response (hygroscopic movement).

Squirting cucumber explosive seed dispersal (over 300x slowed down). Credit: Helen Gorges/CC BY-NC-ND

It’s actually not the most effective means of seed dispersal, per a 2019 study. That’s good news for almond orchards, for example, since farmers can target their weed-killing efforts to the most likely affected areas. And the plant tissue tends to fracture from the force of the ballistic seed dispersal. “Many factors have to interact perfectly to disperse the seeds in the most efficient way, while not destroying the whole plant too early,” said Gorges, who wanted to learn more about the biomechanics that control the fruit as it ripens and prepares for seed dispersion.

Watch this cucumber squirt out its seeds at ballistic speeds Read More »