- Tytuł:
- Role of anthocyanins in high-light stress response
- Autorzy:
-
Trojak, Magdalena
Skowron, Ernest - Powiązania:
- https://bibliotekanauki.pl/articles/1178321.pdf
- Data publikacji:
- 2017
- Wydawca:
- Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
- Tematy:
-
anthocyanins
bracts
fluorescence
poinsettia (Euphorbia pulcherrima Willd. ex Klotzsch)
radiation stress
screening dyes - Opis:
- Anthocyanins are red-to-blue color non-photochemical active flavonoid pigments. Chemically dyes are low molecular weight secondary metabolites. Their distribution in plant cells is mainly limited to peripheral tissues and structures, such as upper mesophyll, exposed to strong light radiation and related to their function as screening pigments. The onset of synthesis and accumulation may be initiated in response to radiation that exceeds the ability of photosynthetic machinery to utilize absorbed energy as well as low temperature or sudden high light exposition. Dyes absorb the excess radiation reaching the plant, minimizing the risk of oxidative damage. We analysed anthocyanin role in light-stress alleviation of poinsettia leaves characterized by low (green leaf) and high accumulation of screening pigments (red leaf). Analyses allow assessing photosynthetic efficiency, chlorophyll and anthocyanin content and distribution of pigments in leaf blade. Better understanding of the anthocyanins function, synthesis and distribution as screening dyes may be crucial for selection of crop varieties characterized by increased anthocyanin accumulation. It may be beneficial as increased accumulation enhances light-stress resistance. Moreover, antioxidant properties and better pronounced coloration make fruits and vegetables more attractive to customers.
- Źródło:
-
World Scientific News; 2017, 81, 2; 150-168
2392-2192 - Pojawia się w:
- World Scientific News
- Dostawca treści:
- Biblioteka Nauki
Artykuł