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Image: Plant defense priming in response to herbivory. Primer stimuli are environmental cues (e.g. volatile organic compounds from damaged neighboring plants, direct herbivore damage, spectral and chemical information) that elicit plant endogenous signaling and so ready plants for faster and stronger responses when additional attacks by herbivores occur (trigger stimulus). Intensity of the priming stimulus and the plant’s inherit sensitivity determine how strongly the plant is responding to a stimulus, reaching from alterations in endogenous signaling that may not significantly affect metabolism to a direct induction of defense metabolism. If the endogenous signal intensity elicit by environmental stimuli ranges within a critical signal intensity, a subsequent trigger stimulus (e.g. direct damage by a herbivore) will result in a faster and stronger expression of the plant defense metabolism. The reliability of a priming stimulus as a predictor of subsequent fitness-affecting damage will affect endogenous signal intensity and retention and thus if the priming information is stored in short- (e.g. transient, transcript and phytohormone accumulation) or long-term memory (e.g. epigenetic alterations). Defense priming allows the integration of environmental information to optimize plant responses while minimizing the costs associated with unreliable (false) environmental information. Credit: Plant Signaling & Behavior

Are plants intelligent? It depends on the definition

By | News, Plant Science

Goldenrod plants exhibit adaptive responses to environmental cues, such as perceiving nearby plants through far-red light and changing behavior when attacked by herbivores. This ability to solve problems and adjust based on environmental information is argued to fit a very basic definition of intelligence, challenging traditional views on plant cognition.

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Image credit: Amalophyllon miraculum leaf. Credit: Creative Commons Attribution License (CC BY 4.0)

A tiny new plant species reaffirms the “miraculous” survival of Western Ecuador’s ravished biodiversity

By | Botany, News

A new 5 cm-high plant species discovered in western Ecuador reaffirms the region’s surprising biodiversity. Found in a farmer’s backyard, this tiny plant, named Amalophyllon miraculum, highlights the importance of preserving small forest fragments. The discovery challenges assumptions of widespread plant extinction and underscores the critical role of local conservation efforts.

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