Use of a geometric morphometric method to determine the developmental stability of Betula pendula Roth

Baranov, S. G.

doi:10.1134/s1062359017050041

Cited by 7 publications

(5 citation statements)

References 2 publications

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“…The leaf blade showed highest significance (F-Goodall = 12.17; p <0.001), that confirmed the presence of directional asymmetry trace in shape of leaf blades a year earlier, under relatively similar environmental conditions. Only one population from seven showed 'clear' fluctuating asymmetry [19]. In the current study, after increasing df, as the number of measurements was increased and the measurement error reduced, DA was not obtained at the population level and was not statistically significant.…”

Section: -Discussioncontrasting

confidence: 64%

“…In plants DA is tested approximately in 10% of some dimensional traits, for example in the leaf blades of woody plants, as silver birch [18]. In English oak with heterogeneous structure of leaf blade the amount of such traits was higher and DA tested in GMMs revealed in all populations observed [19].…”

Section: -Introductionmentioning

confidence: 99%

“…Such a correlation cannot be regarded as mandatory, and depends on the magnitude of linear traits, making a greater contribution to the shape of bilaterally symmetrical halves. The magnitude of the FA and the stability/instability of development depended on some factors including the value, the kind of pollution, and the height of the relief [19].…”

Section: -Introductionmentioning

confidence: 99%

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Morphometric Analyses of (Hidden) Directional Asymmetry in Leaf Blades

Baranov

2018

ESJ

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The deviation from perfect bilateral symmetry is a phenomenon actively exploring in evolutionary and environmental studies. The bilateral variation presents on different ecosystem level. The methods applied vary depending on the task and the final goal of study. The present study demonstrates the statistically significant presence of components (traces) of directional asymmetry (DA), fluctuating asymmetry (FA) and antisymmetry (AS) in leaf blade of Betula pendula on low level of ecosystem such as tree and leaf blade. The Generalized Procrustes Analysis was applied for testing asymmetry of shape in all data set and subgroups. The category ‘population’ revealed no significant value of DA (factor ‘side’). In the levels ‘tree’ and ‘leaf blade’ the factor ‘side’ was statistically significant as well as fluctuating asymmetry (factor interaction ‘leaf × side’).The principal component analysis showed visually the difference in PC scores between antisymmetry matrices of the left and right halves of the leaf blade. Covariate analysis matrices demonstrated the shape deviation from strict symmetry. The metric traits showed directional asymmetry in t-test in the leaf blade and the low kurtosis values. Permutation test of kurtosis values in geometric morphometric approach showed deviation from normality that could verified as a weak presence AS traces. The discriminant analysis results showed that traces of DA differed at the subpopulation level, as three of 10 populations revealed not significant factor ‘side’. Descriptive statistics of the metric train showed a correspondence to the trace of directional asymmetry in the shape of leaf blade. Fluctuating asymmetry in its pure form, at three levels of ecosystem was met only in single population of ten that should be taken into account testing developmental stability of birch and possibly other woody plants.

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Section: -Discussioncontrasting

confidence: 64%

Section: -Introductionmentioning

confidence: 99%

Section: -Introductionmentioning

confidence: 99%

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Morphometric Analyses of (Hidden) Directional Asymmetry in Leaf Blades

Baranov

2018

ESJ

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“…Genetic screens in the model plant Arabidopsis have been particularly rewarding, identifying more than 130 epigenetic regulators. The diversity of epigenetic pathways in plants is remarkable, presumably contributing to the phenotypic plasticity of plant postembryonic development and the ability to survive and reproduce [42,43]. Relief is an important factor determining plastic and fluctuation variability.…”

Section: Methods Of Geometric Morphometricsmentioning

confidence: 99%

Environmental Factors Affecting the Expression of Bilateral-Symmetrical Traits in Plants

Baranov¹,

Vinokurov²,

Fedorova³

2020

Gene Expression and Phenotypic Traits

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In recent years, there has been a growing interest in the problem of asymmetry of bilateral traits in plants. Three types of bilateral asymmetry are found in the leaf blade, of interest to ecologists and evolutionists. A brief review of the methods used in testing bilateral asymmetry and developmental stability discusses their role in the development of homeostasis and ontogenesis. Intra-and interspecific differences are considered on the example of woody plants under the influence of factors influencing the expression of bilaterally symmetry. The influence of stress on the manifestation of asymmetric traits is considered. Apparently, the climate and topography of the area play a more important role, determining the plastic and fluctuating variability. The relationship of plasticity, evolutionary canalization, and development stability is considered on the example of woody and cultivated plants. Plasticity and fluctuation variability are in a relationship coordinated by climatic conditions, primarily lighting and temperature. This, in turn, determines the mechanisms of gene regulatory networks. Thus, phenogenetics, which studies the patterns and mechanisms of gene expression and ontogenesis, is based on the data from field botanical studies of plant shape and asymmetry. Epigenetic and population studies of phenotypic variations play a role in standardizing and finding suitable plant species and varieties.

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“…The landmark method, renowned for its high accuracy, is the dominant approach in geometric morphometry. It facilitates statistical analysis of geometric measurement data and offers insights into diverse morphological questions; such questions arise in fields including development [19], evolution [20], and ecology [21,22], among other related disciplines. Jiang and colleagues (2014) successfully differentiated wild Chinese mitten crabs from varying water systems by utilizing the landmark method, which resulted in higher discrimination accuracy as compared to their earlier comparative research that depended on traditional morphometric methods.…”

Section: Rationality Of Landmark Selectionmentioning

confidence: 99%

Identification of “Bathed” Chinese Mitten Crabs (Eriocheir sinensis) Using Geometric Morphological Analysis of the Carapace

Xu,

Xue,

Liu

et al. 2023

Fishes

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To confirm whether Chinese mitten crabs (Eriocheir sinensis), commonly known as hairy crabs or river crabs, in non-Yangcheng Lake areas undergo morphological convergence with the original crabs in the Yangcheng Lake purse seine and high-standard modified aquaculture ponds after being “introduced” or “bathed”-cultured, we employed a geometric morphometrics approach. This approach allowed us to compare and analyze the dynamic changes in the carapace morphology of both the original and “introduced” crabs in Yangcheng Lake and high-standard ponds in Kunshan City at 0, 7, 14, and 30 days after “bathing” culture. The geometric morphological analysis of the carapace was conducted using a system of 35 established landmarks. The stepwise discriminant analysis of the relative distortion score revealed morphological differences between “introduced” and resident original crabs in the Yangcheng Lake area and in high-standard modified ponds after 7, 14, and 30 days of bathing culture. The accuracy of the discriminant analysis was 100%. The results of the geometric morphological visualization demonstrated that the carapaces of the bathed crabs underwent adaptive changes in the water. However, even after one month of bathing culture, the “introduced” crabs in lakes and ponds could not reach the morphological characteristics of the original crabs, i.e., their carapaces did not exhibit the characteristics of the original crabs.

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Use of a geometric morphometric method to determine the developmental stability of Betula pendula Roth

Cited by 7 publications

References 2 publications

Morphometric Analyses of (Hidden) Directional Asymmetry in Leaf Blades

Morphometric Analyses of (Hidden) Directional Asymmetry in Leaf Blades

Environmental Factors Affecting the Expression of Bilateral-Symmetrical Traits in Plants

Identification of “Bathed” Chinese Mitten Crabs (Eriocheir sinensis) Using Geometric Morphological Analysis of the Carapace

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