Flavonoid and carotenoid content in floral organs of Iris pumila
2018
Аутори:
Manitašević Jovanović, SanjaHočevar, Katarina
Budečević, Sanja
Остала ауторства
Uzelac, BrankaТип документа:
Конференцијски прилог (Објављена верзија)
,
© 2018 by the Serbian Plant Physiology Society
Метаподаци
Приказ свих података о документуАпстракт:
Flavonoids and carotenoids are plant pigments that play a variety of functional roles in higher
plants. Beside their impacts on flower color, they are involved in plant growth, development and
protection against a wide range of environmental stressors. They act either as light attenuators
and free radical scavengers (e.g. anthocyanins) or participate in non-photochemical quenching
(carotenoids). To quantify the accumulation of flavonoids and carotenoids in different floral organs,
ffty Iris pumila genotypes grown in a common-garden and belonging to different color classes
(yellow, blue, violet, dark blue and dark violet) were assessed. One flower per each genotype was
harvested and analyzed spectrophotometrically for the content of three flavonoids (anthocyanins,
flavones, flavonols) and total carotenoids in different floral organs: falls, standards, stamens and
style arms. While the quantity of flavonoids was found to be floral organ- and color morph-specific, the amount of carotenoids varied only among individual floral organs. The variation pattern of
the analyzed compounds displayed identical trend - the lowest amounts were recorded in the stamen and style arm, and the highest in the standard and fall. The content of carotenoids appeared
to be the highest in floral organs of the yellow color morphs, whereas in the blue, violet, dark blue
and dark violet flower phenotypes its abundance was a half of that recorded for the yellow one.
Conversely, the anthocyanin content was rather high in the floral organs of dark violet and dark
blue color morphs, but extremely low in those of the yellow one. Our results clearly suggest that a
greater accumulation of both plant pigments in sterile rather than in fertile flower organs could be
causally related to their specifc function in the process of sexual reproduction, where the former
serve to attract plant pollinators, while the latter promote an efcient pollen deposition.
Кључне речи:
anthocyanins; carotenoids; Iris pumilaФинансирање / пројекти:
- Еволуција у лабораторији и адаптације у природи (RS-MESTD-Basic Research (BR or ON)-173007)
У:
- Uzelac B, editor. Book of abstracts. 3rd International Conference on Plant Biology (22nd SPPS Meeting); 2018 Jun 9-12; Belgrade, Serbia. Belgrade: Serbian Plant Physiology Society; Institute for Biological Research "Siniša Stanković"; Faculty of Biology; 2018. p. 93-4.
Повезане информације:
- Друга верзија
https://radar.ibiss.bg.ac.rs/handle/123456789/5058