TY  - JOUR
AU  - Budečević, Sanja
AU  - Manitašević Jovanović, Sanja
AU  - Vuleta, Ana
AU  - Tucić, Branka
AU  - Klingenberg, Christian Peter
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/4997
AB  - Directional asymmetry is a systematic difference between the left and right sides for structures with bilateral symmetry or a systematic differentiation among repeated parts for complex symmetry. This study explores factors that produce directional asymmetry in the flower of Iris pumila, a structure with complex symmetry that makes it possible to investigate multiple such factors simultaneously. The shapes and sizes of three types of floral organs, the falls, standards, and style branches, were quantified using the methods of geometric morphometrics. For each flower, this study recorded the compass orientations of floral organs as well as their anatomical orientations relative to the two spathes subtending each flower. To characterize directional asymmetry at the whole-flower level, differences in the average sizes and shapes according to compass orientation and relative orientation were computed, and the left–right asymmetry was also evaluated for each individual organ. No size or shape differences within flowers were found in relation to anatomical position; this may relate to the terminal position of flowers in Iris pumila, suggesting that there may be no adaxial–abaxial polarity, which is very prominent in many other taxa. There was clear directional asymmetry of shape in relation to compass orientation, presumably driven by a consistent environmental gradient such as solar irradiance. There was also clear directional asymmetry between left and right halves of every floral organ, most likely related to the arrangement of organs in the bud. These findings indicate that different factors are acting to produce directional asymmetry at different levels. In conventional analyses not recording flower orientations, these effects would be impossible to disentangle from each other and would probably be included as part of fluctuating asymmetry.
PB  - Hoboken : John Wiley & Sons Ltd
T2  - Evolution & Development
T1  - Directional asymmetry and direction-giving factors: Lessons from flowers with complex symmetry
DO  - 10.1111/ede.12402
ER  - 

@article{
author = "Budečević, Sanja and Manitašević Jovanović, Sanja and Vuleta, Ana and Tucić, Branka and Klingenberg, Christian Peter",
year = "2022",
abstract = "Directional asymmetry is a systematic difference between the left and right sides for structures with bilateral symmetry or a systematic differentiation among repeated parts for complex symmetry. This study explores factors that produce directional asymmetry in the flower of Iris pumila, a structure with complex symmetry that makes it possible to investigate multiple such factors simultaneously. The shapes and sizes of three types of floral organs, the falls, standards, and style branches, were quantified using the methods of geometric morphometrics. For each flower, this study recorded the compass orientations of floral organs as well as their anatomical orientations relative to the two spathes subtending each flower. To characterize directional asymmetry at the whole-flower level, differences in the average sizes and shapes according to compass orientation and relative orientation were computed, and the left–right asymmetry was also evaluated for each individual organ. No size or shape differences within flowers were found in relation to anatomical position; this may relate to the terminal position of flowers in Iris pumila, suggesting that there may be no adaxial–abaxial polarity, which is very prominent in many other taxa. There was clear directional asymmetry of shape in relation to compass orientation, presumably driven by a consistent environmental gradient such as solar irradiance. There was also clear directional asymmetry between left and right halves of every floral organ, most likely related to the arrangement of organs in the bud. These findings indicate that different factors are acting to produce directional asymmetry at different levels. In conventional analyses not recording flower orientations, these effects would be impossible to disentangle from each other and would probably be included as part of fluctuating asymmetry.",
publisher = "Hoboken : John Wiley & Sons Ltd",
journal = "Evolution & Development",
title = "Directional asymmetry and direction-giving factors: Lessons from flowers with complex symmetry",
doi = "10.1111/ede.12402"
}

Budečević, S., Manitašević Jovanović, S., Vuleta, A., Tucić, B.,& Klingenberg, C. P.. (2022). Directional asymmetry and direction-giving factors: Lessons from flowers with complex symmetry. in Evolution & Development
Hoboken : John Wiley & Sons Ltd..
https://doi.org/10.1111/ede.12402

Budečević S, Manitašević Jovanović S, Vuleta A, Tucić B, Klingenberg CP. Directional asymmetry and direction-giving factors: Lessons from flowers with complex symmetry. in Evolution & Development. 2022;.
doi:10.1111/ede.12402 .

Budečević, Sanja, Manitašević Jovanović, Sanja, Vuleta, Ana, Tucić, Branka, Klingenberg, Christian Peter, "Directional asymmetry and direction-giving factors: Lessons from flowers with complex symmetry" in Evolution & Development (2022),
https://doi.org/10.1111/ede.12402 . .

TY  - JOUR
AU  - Tucić, Branka
AU  - Budečević, Sanja
AU  - Manitašević Jovanović, Sanja
AU  - Vuleta, Ana
AU  - Klingenberg, Christian Peter
PY  - 2018
UR  - http://doi.wiley.com/10.1111/jeb.13207
UR  - http://www.ncbi.nlm.nih.gov/pubmed/29134739
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/2927
AB  - Fluctuating asymmetry (FA) is widely used to quantify developmental instability (DI) in ecological and evolutionary studies. It has long been recognized that FA may not exclusively originate from DI for sessile organisms such as plants, because phenotypic plasticity in response to heterogeneities in the environment might also produce FA. This study provides the first empirical evidence for this hypothesis. We reasoned that solar irradiance, which is greater on the southern side than on the northern side of plants growing in the temperate zone of the Northern Hemisphere, would cause systematic morphological differences and asymmetry associated with the orientation of plant parts. We used geometric morphometrics to characterize the size and shape of flower parts in Iris pumila grown in a common garden. The size of floral organs was not significantly affected by orientation. Shape and particularly its asymmetric component differed significantly according to orientation for three different floral parts. Orientation accounted for 10.4% of the total shape asymmetry within flowers in the falls, for 11.4% in the standards and for 2.2% in the style branches. This indicates that phenotypic plasticity in response to a directed environmental factor, most likely solar irradiance, contributes to FA of flowers under natural conditions. That FA partly results from phenotypic plasticity and not just from DI needs to be considered by studies of FA in plants and other sessile organisms.
T2  - Journal of Evolutionary Biology
T1  - Phenotypic plasticity in response to environmental heterogeneity contributes to fluctuating asymmetry in plants: first empirical evidence.
IS  - 2
VL  - 31
DO  - 10.1111/jeb.13207
SP  - 197
EP  - 210
ER  - 

@article{
author = "Tucić, Branka and Budečević, Sanja and Manitašević Jovanović, Sanja and Vuleta, Ana and Klingenberg, Christian Peter",
year = "2018",
abstract = "Fluctuating asymmetry (FA) is widely used to quantify developmental instability (DI) in ecological and evolutionary studies. It has long been recognized that FA may not exclusively originate from DI for sessile organisms such as plants, because phenotypic plasticity in response to heterogeneities in the environment might also produce FA. This study provides the first empirical evidence for this hypothesis. We reasoned that solar irradiance, which is greater on the southern side than on the northern side of plants growing in the temperate zone of the Northern Hemisphere, would cause systematic morphological differences and asymmetry associated with the orientation of plant parts. We used geometric morphometrics to characterize the size and shape of flower parts in Iris pumila grown in a common garden. The size of floral organs was not significantly affected by orientation. Shape and particularly its asymmetric component differed significantly according to orientation for three different floral parts. Orientation accounted for 10.4% of the total shape asymmetry within flowers in the falls, for 11.4% in the standards and for 2.2% in the style branches. This indicates that phenotypic plasticity in response to a directed environmental factor, most likely solar irradiance, contributes to FA of flowers under natural conditions. That FA partly results from phenotypic plasticity and not just from DI needs to be considered by studies of FA in plants and other sessile organisms.",
journal = "Journal of Evolutionary Biology",
title = "Phenotypic plasticity in response to environmental heterogeneity contributes to fluctuating asymmetry in plants: first empirical evidence.",
number = "2",
volume = "31",
doi = "10.1111/jeb.13207",
pages = "197-210"
}

Tucić, B., Budečević, S., Manitašević Jovanović, S., Vuleta, A.,& Klingenberg, C. P.. (2018). Phenotypic plasticity in response to environmental heterogeneity contributes to fluctuating asymmetry in plants: first empirical evidence.. in Journal of Evolutionary Biology, 31(2), 197-210.
https://doi.org/10.1111/jeb.13207

Tucić B, Budečević S, Manitašević Jovanović S, Vuleta A, Klingenberg CP. Phenotypic plasticity in response to environmental heterogeneity contributes to fluctuating asymmetry in plants: first empirical evidence.. in Journal of Evolutionary Biology. 2018;31(2):197-210.
doi:10.1111/jeb.13207 .

Tucić, Branka, Budečević, Sanja, Manitašević Jovanović, Sanja, Vuleta, Ana, Klingenberg, Christian Peter, "Phenotypic plasticity in response to environmental heterogeneity contributes to fluctuating asymmetry in plants: first empirical evidence." in Journal of Evolutionary Biology, 31, no. 2 (2018):197-210,
https://doi.org/10.1111/jeb.13207 . .