Phytochrome

From WikiMD.org
Jump to navigation Jump to search

Phytochrome

Phytochrome (pronounced: /ˈfaɪtoʊkroʊm/) is a type of photoreceptor in plants that is sensitive to light in the red and far-red region of the visible spectrum.

Etymology

The term "phytochrome" is derived from the Greek words "phyto" meaning plant and "chrome" meaning color.

Function

Phytochromes play a crucial role in photomorphogenesis, the growth and development of plants in response to light. They are involved in various physiological processes including seed germination, stem elongation, leaf expansion, and the timing of flowering.

Structure

Phytochromes are composed of a protein part and a non-protein part, known as the chromophore. The chromophore absorbs light and causes a conformational change in the phytochrome protein, leading to changes in the plant's growth and development.

Types

There are two types of phytochromes: Phytochrome A (PhyA) and Phytochrome B (PhyB). PhyA is most sensitive to light in the far-red region, while PhyB is most sensitive to red light.

Related Terms

External links

Esculaap.svg

This WikiMD dictionary article is a stub. You can help make it a full article.


Languages: - East Asian 中文, 日本, 한국어, South Asian हिन्दी, Urdu, বাংলা, తెలుగు, தமிழ், ಕನ್ನಡ,
Southeast Asian Indonesian, Vietnamese, Thai, မြန်မာဘာသာ, European español, Deutsch, français, русский, português do Brasil, Italian, polski