Wild-type (WT) protonemata of the moss Ceratodon purpureus grow upwards in darkness (negative gravitropism), whereas protonemata of the mutant, wrong-way response (wwr-1) grow down. Since Ceratodon ...

Two Arabidopsis thaliana ABC transporter genes linked to auxin transport by various previous results were studied in a reverse-genetic fashion. Mutations in Multidrug Resistance-Like1 (MDR1) reduced ...

Part of Biology (Single Science) Using food and controlling growth When the stem grows against the force of gravity (upwards), this is known as a negative gravitropism. When a root grows in the ...

Highly developed seed plants evolved deep root systems that are able to sense Earth's gravity. The 'how and when' of this evolutionary step has, until now, remained unknown. Plant biologists have ...

Gravity affects the ecology and evolution of every living organism. In plants, the general response to gravity is well known: their roots respond positively, growing down, into the soil, and their ...

What happens belowground in a corn field is easy to overlook, but corn root architecture can play an important role in water and nutrient acquisition, affecting drought tolerance, water use efficiency ...

When a germinating seed is laid on its side, some roots promptly bend earthward, while others turn more slowly. Directed growth of plant roots toward gravity is critical to ensure the availability of ...

Astrounaut Ron Garan watering cucumber seeds in Japanese module of ISS. Scientists have untangled the competing influences of water and gravity on plant roots–by growing cucumbers during spaceflight.

Plants can acclimate by using tropisms to link the direction of growth to environmental conditions. Hydrotropism allows roots to forage for water, a process known to depend on abscisic acid (ABA) but ...

One of the most important events in evolutionary history occurred around 500 million years ago with the spread of plant life from water to land. For plants to thrive in this new environment, root ...