Category

Botany

Study of bryophytes reveals evolution of genetic pathways governing plant branching

By | Botany, News

Non-vascular bryophytes live in colonies that cover the ground and resemble tiny forests. In a real forest, plants compete for light in different layers of the canopy. If a plant does not receive enough sunlight, it stops lateral branching and instead grows vertically to reach the sunlight. Researchers discovered that the liverwort Marchantia polymorpha, whose plant body is fundamentally different from those of vascular plants, also adapts its architecture in response to shade.

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Different blossoming schedules have kept these flowers from driving each other extinct

By | Botany, News

A big part of evolution is competition– when there are limited resources to go around, plants and animals have to duke it out for nutrients, mates, and places to live. That means that the flower-covered meadows of China’s Hengduan mountains were an evolutionary mystery– there are dozens of species of closely-related rhododendrons that all live in harmony. To figure out why, scientists spent a summer carefully documenting the flowering patterns of 34 Rhododendron species, and they discovered the reason why the plants were able to coexist: they burst into bloom at different points in the season so they don’t have to compete for pollinators.

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