Utvrđivanje ekoloških odgovora Iris pumila na globalno zagrevanje
2023
Authors:
Hočevar, KatarinaVuleta, Ana
Manitašević Jovanović, Sanja
Contributors
Glavendekić, MilkaSkočajić, Dragana
Document Type:
Conference object (Published version)
,
© 2023 by the Faculty of Forestry, University of Belgrade
Metadata
Show full item recordAbstract:
Temperature is considered as the most ecologically relevant environmental factor since it affects all biological processes within an organism. It impacts the physiological responses, fitness and the distribution of organisms. Therefore it is expected that global warming will significantly alter biodiversity and consequently influence ecosystem processes. Plant functional traits are morpho-physio-phenological characteristics that shape plant performance through their effects on growth, reproduction, and survival, underlie vegetation responses to environmental changes. To anticipate the effects of global warming on plant functioning, we assessed the phenotypic expression of the key leaf functional trait – specific leaf area (SLA), in response to a temperature increase. For that purpose, Iris pumila plants developed from rhizome segments of clonal genotypes originated from dune and wood natural populations of Deliblato Sands and commonly cultivated in a growth room at 23/19°C (day/night) ambient temperature, were subjected to experimental warming. To simulate lower and upper projected warming regimes expected within the current century, a total of 46 clonal genotypes were first warmed by 1°C (24/20°C day/night) and then by 4°C (27/23°C day/night). Within each temperature treatment, the last fully developed leaf was harvested from each plant and analyzed for the SLA. The mean SLA value was found to vary both across temperature treatments and between populations. The repeated-measures profile analysis revealed that both populations responded in the same manner but with different magnitudes. In both populations, SLA increased with temperature, but those values were significantly greater in the dune genotypes than in the wood ones. These findings suggest that I. pumila has the ability to counteract rising temperatures through the plastic response of SLA and that the level of this response is likely to be dependent on the habitat type I. pumila plants derived from.
Keywords:
Iris pumila L.; SLA; Global warmingFunding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200007 (University of Belgrade, Institute for Biological Research 'Siniša Stanković') (RS-MESTD-inst-2020-200007)
In:
- Glavendekić M, Skočajić D, editors. Zbornik radova: Simpozijum sa međunarodnim učešćem: Pejzažna hortikultura 2023: Zdravlje biljaka - zdravlje ljudi; 2023 Feb 9-10; Belgrade, Serbia. Belgrade: Faculty of Forestry, University of Belgrade; 2023. p. 191-205.