Seasonal variability in leaf chemistry of Iris variegata L. genotypes growing in contrasting light conditions
2018
Аутори:
Živković, UrošAvramov, Stevan
Barišić Klisarić, Nataša
Miljković, Danijela
Tubić, Ljiljana
Mišić, Danijela
Šiler, Branislav
Tarasjev, Aleksej
Остала ауторства
Uzelac, BrankaТип документа:
Конференцијски прилог (Објављена верзија)
,
©2018 by the Serbian Plant Physiology Society
Метаподаци
Приказ свих података о документуАпстракт:
During their evolution plants developed a set of mechanisms to adapt to the varying environmental conditions. Light is one of the most dynamic components of the terrestrial environment
that affects plant physiology and development. Optimization of light harvesting for photoautotrophic growth inevitably induces specific adjustments in all aspects of plant phenotype: morphology, anatomy, phytochemical composition, flowering phenology etc. As sessile organisms
capable of perceiving quantitative and qualitative features of light surroundings, plants need to
be particularly plastic in their response to different light environments. For this study genotypes of Iris variegata that occupy different light habitats in Deliblato sands were selected: a) open habitats
where they were exposed to full sunlight and b) woodland understories with lower light intensity
and changed light quality (vegetative shade). Specimens of those I. variegata genotypes were
grown under two experimental light treatments: 1.) high intensity and higher red-far red light ratio
and 2.) low intensity and lower red-far red light ratio. Leaves were collected during spring, summer
and autumn of one experimental year, dried in silica gel and extracted with methanol. Samples
were subjected to UHPLC/qqqMS profiling of phenolics (phenolic acids, flavonoids, and xanthones), and subsequently to chemometric analysis. Results showed that dissimilar light conditions
in applied treatments markedly affected I. variegata phenolics composition. Repeated measures
model ANOVA revealed a significant effect of seasons for all analyzed phenolics. Concentrations of
half of the analyzed chemical compounds were significantly different under two light treatments.
The correlations between traits were in almost all cases significant and positive.
Кључне речи:
secondary metabolites; light treatments; Iris variegata; Deliblato sandsФинансирање / пројекти:
- Еволуција у хетерогеним срединама: механизми адаптација, биомониторинг и конзервација биодиверзитета (RS-MESTD-Basic Research (BR or ON)-173025)
- Физиолошка, хемијска и молекуларна анализа диверзитета одабраних ретких и угрожених биљних врста у циљу еx ситу заштите и продукције биолошки активних једињења (RS-MESTD-Basic Research (BR or ON)-173024)
- Биотехнологија ин витро - гајене, лековите и угрожене биљне врсте (RS-MESTD-Basic Research (BR or ON)-173015)
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. 97-8.