Morphological and genetic variations of Sophora davidii populations originating from different altitudes in the mountains of southwestern China

Zhao, Lili; Zhang, Yu; Wang, Pu-Chang; Luo, Tao; Chen, Juan

doi:10.1016/j.flora.2016.06.002

Cited by 11 publications

(4 citation statements)

References 38 publications

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“…The CV reflects the degree of phenotypic dispersion of different populations of the same species, while H' represents the diversity of plant germplasm resources [39,40]. In this study, the CV values of the phenotypic traits in the different populations indicated that the populations at low elevations were less diverse, whereas the populations at middle and higher elevations were comparatively more diverse.…”

Section: Discussionmentioning

confidence: 68%

Phenotypic Diversity and Variation of <i>Lonicera caerulea</i> Populations in the Changbai Mountain Alongside the Elevation Gradient

Li¹,

Wang²,

Qi³

et al. 2020

Pol. J. Environ. Stud.

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Plant phenotypic diversity is the product of the genetic diversity and ecological environment of a population and is mainly expressed in the morphological features of a population under different habitat conditions within its distribution area [1-3]. Phenotypic and functional traits are plastic in response to the environment, allowing plants to adapt to new habitats [4,5]. Changes in elevation gradients are associated with significant changes in ecology [6]. For instance, increased elevation is associated with elevated

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Section: Discussionmentioning

confidence: 68%

Phenotypic Diversity and Variation of <i>Lonicera caerulea</i> Populations in the Changbai Mountain Alongside the Elevation Gradient

Li¹,

Wang²,

Qi³

et al. 2020

Pol. J. Environ. Stud.

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“…Another Sophora species in the QTP, S. davidii , which is an important leguminous shrub widely distributed in southeastern China ( Zhao et al, 2016 ), is closely related to S. moorcroftiana ( Wu, 1983 ) and is widely distributed from the southeast of the QTP to central China. Although these two species share many characteristics, such as being diploid (2n = 18), insect-pollinated, and gravity-dispersed via propagules, a hypothesis was proposed in which S. moorcroftiana diverged from S. davidii and speciated ( Shen, 1996 ).…”

Section: Introductionmentioning

confidence: 99%

Geographic population genetic structure and diversity of Sophora moorcroftiana based on genotyping-by-sequencing (GBS)

Liu

Yang

et al. 2020

PeerJ

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Sophora moorcroftiana is a perennial leguminous low shrub endemic to the Yarlung Zangbo River basin in Tibet with irreplaceable economic and ecological value. To determine the drivers of evolution in this species, 225 individuals belonging to 15 populations from different geographic locations were sampled, and population genetics was studied using high-throughput genotyping-by-sequencing (GBS). Based on genetic diversity analysis, phylogenetic analysis, principal component analysis, and structure analysis, 15 natural populations were clustered into the following five subgroups: subgroup I (Shigatse subgroup) was located in the upper reaches of the Yarlung Zangbo River with a relatively high level of population genetic variation (means for PIC, Shannon and PI were 0.173, 0.326 and 0.0000305, respectively), and gene flow within the subgroup was also high (mean value for Nm was 4.67). Subgroup II (including Pop 7 and Pop 8; means for PIC, Shannon and PI were 0.182, 0.345 and 0.0000321, respectively), located in the middle reaches of the Yarlung Zangbo River had relatively high levels of gene flow with the populations distributed in the upper and lower reaches. The Nm between subgroup II with subgroups I and III was 3.271 and 2.894, respectively. Considering all the genetic diversity indices Pop 8 had relatively high genetic diversity. Subgroup III (the remaining mixed subgroup of Lhasa and Shannan) was located in the middle reaches of the Yarlung Zangbo River and the means for PIC, Shannon and PI were 0.172, 0.324 and 0.0000303, respectively. Subgroup IV (Nyingchi subgroup), located in the lower reaches of the Yarlung Zangbo River basin, showed a further genetic distance from the other subgroups and the means for PIC, Shannon and PI were 0.147, 0.277 and 0.0000263, respectively. Subgroup V (Nyingchi Gongbu Jiangda subgroup), located in the upper reaches of the Niyang River, had the lowest level of genetic variation (means for PIC, Shannon and PI were 0.106, 0.198 and 0.0000187, respectively) and gene flow with other populations (mean value for Nm was 0.42). According to the comprehensive analysis, the S. moorcroftiana populations generally expanded from upstream to downstream and displayed a high level of genetic differentiation in the populations in the upper and lower reaches. There were high levels of gene exchange between the central populations with upstream and downstream populations, and wind-induced seed dispersal was an important factor in the formation of this gene exchange mode.

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“…Leaf shape variations have been shown to be a functional response to altitude and longitude at regional scales rather than to temperature-related factors such as latitude [68]. Environmental gradients in shapes, with special regard to elevation, were also found in Sophora davidii Franch., providing strong evidence that variations in morphological and genetic parameters reflect morphological and genetic adaptation to native habitats, highlighting ecological and evolutionary consequences along altitudinal gradients of mountainous ecosystems [69]. The shape of the leaf apex was widely indicated in the past as diagnostic [2,15,70].…”

Section: Discussionmentioning

confidence: 99%

Explaining Intricate Morphometric Variability with Environmental Predictors: The Case of Globularia cordifolia Species Complex

Innangi

Friščić

Pilepić

et al. 2020

Plants

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Globularia is a genus of small evergreen and perennial shrubs that are widespread in Europe. Globularia section Empetron includes a group of three species, G. cordifolia, G. meridionalis, and G. neapolitana, that have been taxonomically disputed for more than 150 years. Many morphological features have been proposed to discriminate these species. Nevertheless, evidence from both past and recent literature suggest that these differences among species are not consistent. In order to shed new light in this long-disputed group, we investigated 10 populations of the G. cordifolia species complex with both classical and geometric morphometrics and used environmental predictors in multivariate regression to explain patterns of variation. Our results showed that bract area and calyx teeth length are correlated with solar radiation and annual precipitation, whereas leaf dry mass per unit area can be explained by temperature seasonality. Leaf shape can be explained by temperature seasonality as well, although with a lower amount of explanatory and predictive power. Despite a comparatively low sample size in terms of populations, our results were based on a large number of individuals and were supported by a robust statistical approach. We can conclude that differences among the three species of Globularia could be related to the combined effects of several ecological variables and might not have taxonomical value. Our novel approach provided an ecological interpretation on a species complex that makes up a continuum of forms within the environmental framework of the Mediterranean basin.

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Morphological and genetic variations of Sophora davidii populations originating from different altitudes in the mountains of southwestern China

Cited by 11 publications

References 38 publications

Phenotypic Diversity and Variation of <i>Lonicera caerulea</i> Populations in the Changbai Mountain Alongside the Elevation Gradient

Phenotypic Diversity and Variation of <i>Lonicera caerulea</i> Populations in the Changbai Mountain Alongside the Elevation Gradient

Geographic population genetic structure and diversity of Sophora moorcroftiana based on genotyping-by-sequencing (GBS)

Explaining Intricate Morphometric Variability with Environmental Predictors: The Case of Globularia cordifolia Species Complex

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