Why plants grow towards light

It was found that when several of the PIN and kinase components were missing, plant growth was completely unresponsive to the light signals that trigger phototropism. The auxin transport mechanism in these mutant plants was severely impaired: The plants grew upwards, away from the gravitational pull, irrespective of the light source.

This helped the scientists prove for the first time that the hormone auxin definitely is the substance that drives phototropism. Materials provided by Technische Universitaet Muenchen. Note: Content may be edited for style and length. Science News. Transporters move plant hormone to target site The substance responsible for cell elongation is auxin.

Journal Reference : B. Willige, S. Ahlers, M. Zourelidou, I. Barbosa, E. Demarsy, M. Trevisan, P. Davis, M. Roelfsema, R. Hangarter, C. One to one online tuition can be a great way to brush up on your Biology knowledge.

Answered by Laura M. Answered by Samantha B. Answered by Lily C. Answered by Anushka J. Growing crops more efficiently: the right amount of auxin in the right place Higher auxin levels at the right moment and in the right place result in better growth and greater yields. A novel putative auxin carrier family regulates intracellular auxin homeostasis in plants.

Nature , ; DOI: ScienceDaily, 16 April Why plants grow towards the light. Retrieved November 10, from www. A team has now been able to A research team has identified a peptide and its receptor that help lateral roots to grow with the right But if plants all have similar stimuli, why are there so many different plant shapes?

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