Huge flower color polymorphism in Iris pumila L: previous studies and current research
2022
Autori:
Barišić Klisarić, NatašaAvramov, Stevan
Miljković, Danijela
Živković, Uroš
Tarasjev, Aleksej
Tip dokumenta:
Konferencijski prilog (Objavljena verzija)
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© 2022 by the European Society for Evolutionary Biology
Metapodaci
Prikaz svih podataka o dokumentuApstrakt:
Huge flower color polymorphism found in natural populations of Iris pumila, endangered
species inhabiting the Natural reserve of Deliblato Sand, Serbia, enables the
identification of genetically distinct clones and makes this species a superb object for
genetic polymorphism studies. Evolutionary biology studies of the dwarf bearded iris
were conducted and published by the researchers from our department in the last four
decades with special emphasis on evolutionary ecology and ecological genetics.
However, these studies had several important limitations. Subjectivity in visual
identification led to inconsistencies in defining color morphs. In our current research,
variability in flower color is precisely accessed by reflectance UV-enhanced spectroscopy
in the field, removing subjectivity in visual identification and influence of surrounding light
conditions. Those specters reveal both discrete and continuous variation and will be
followed by pigment HPLC analysis providing insights into the biochemical basis of
flower color polymorphism. Limitations of previous studies also included smaller samples
restricted to the flowering peak. Therefore, we are now also conducting a long-term study
of the dynamics of color-morph frequencies using digital photography (including ones
taken by drone), involving several complete flowering seasons on selected spots
(covering over 4000 square meters and including tens of thousands of flowers) in
undisturbed I.pumila natural population. This approach could reveal how precisely
determined color-morph frequencies change both temporally and spatially in their natural
habitat in the face of changing environments and vegetative succession and in
perspective the role of natural selection vs. random events in maintaining flower-color
polymorphism.
Finansiranje / projekti:
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200007 (Univerzitet u Beogradu, Institut za biološka istraživanja 'Siniša Stanković') (RS-MESTD-inst-2020-200007)
U:
- Book of Abstracts: Congress of the European Society for Evolutionary Biology; 2022 Aug 14-19; Prague, Czech Republic. European Society for Evolutionary Biology; 2022. p. 509.