Conservation strategy for aquatic plants: endangered Ottelia acuminata (Hydrocharitaceae) as a case study

Guo, Jiansheng; Yu, Ye; Zhang, Jianwen; Li, Zhimin; Zhang, Yonghong; Volis, Sergei

doi:10.1007/s10531-019-01740-9

Cited by 18 publications

(14 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, clustering of samples from the Rhine in The Netherlands and the Po in Italy, together with some similarities to populations from the Danube in Bavaria, was observed in both studies. Comparable genetic differences within and between populations of dioecious Hydrocharitaceae were found in Ottelia acuminata where high levels of genetic differences between the investigated populations were found, but little diversity within the populations [ 27 ].…”

Section: Discussionmentioning

confidence: 99%

Genetic Diversity of Stratiotes aloides L. (Hydrocharitaceae) Stands across Europe

Turner

Hameister

Hudler

et al. 2021

Plants

View full text Add to dashboard Cite

Intense land use and river regulations have led to the destruction of wetland habitats in the past 150 years. One plant that is affected by the reduction in appropriate habitats is the macrophyte Stratiotes aloides which has become rare in several areas. The preservation of genetic diversity within a species is a prerequisite for survival under changing environmental conditions. To evaluate the level of genetic diversity within and among populations of Stratiotes aloides, we investigated samples from waterbodies across Europe using AFLP. Low genetic diversity among samples from the same population was found, proving that stands consist of few clones which propagate clonally. Nevertheless, most populations showed differences compared to other populations indicating that there is genetic diversity within the species. The analyzed samples formed two groups in STRUCTURE analyses. The two groups can be further subdivided and mainly follow the major river systems. For conserving the genetic diversity of Stratiotes aloides, it would thus be preferable to focus on conserving individuals from many different populations rather than conserving selected populations with a higher number of individuals per population. For reintroductions, samples from the same river system could serve as founder individuals.

show abstract

Section: Discussionmentioning

confidence: 99%

Genetic Diversity of Stratiotes aloides L. (Hydrocharitaceae) Stands across Europe

Turner

Hameister

Hudler

et al. 2021

Plants

View full text Add to dashboard Cite

show abstract

“…It has been categorized as vulnerable with a status 'A2c' in the China Species Red List (Qin et al 2017). During the past 30 years, O. acuminata has disappeared from 12 lakes or rivers where it previously had been common (Guo et al 2019). Unfortunately, the rapid disappearance of populations continues.…”

Section: Ottelia Acuminata Varsongmingensis; Chloroplast Genome; Endmentioning

confidence: 99%

The complete chloroplast genome of Ottelia acuminata var. songmingensis, an Endangered aquatic macrophyte in China

Guo

et al. 2019

Mitochondrial DNA Part B

Self Cite

View full text Add to dashboard Cite

Ottelia acuminata var. songmingensis is an Endangered freshwater submerged macrophyte occupying only a portion of a stream ca. 300 meters long in Songming County of the Yunnan Province, China. Here, we report and characterize the complete chloroplast genome sequence of O. acuminata var. songmingensis to provide genomic resources useful for promoting its conservation. The complete chloroplast genome is 157,645 bp in length, consisting of a pair of inverted repeat (IR) regions (24,973 bp), a small single copy (SSC) region (20,055 bp), and a large single copy (LSC) region (87,644 bp). The chloroplast genome contained 116 genes, including 71 protein-coding genes, 37 tRNA genes, and 8 rRNA genes. The overall GC content of the whole genome is 36.6%. Phylogenetic analysis of 19 selected chloroplast genomes revealed that O. acuminata var. songmingensis was closely related to Elodea canadensis of Hydrocharitaceae.

show abstract

“…In Africa, this genus has been assessed on a molecular and taxonomical basis (Li et al, 2020;Symoens, 2009). However, no previous studies on the continent have evaluated the ENMs of the genus, and only O. acuminata has received attention regarding ENMs elsewhere (Guo et al, 2019). This species' future projections have shown a general stable habitat under the extreme greenhouse gas emission scenario RCP 8.5, with a slight shift of the range polewards.…”

Section: Introductionmentioning

confidence: 99%

Environmental determinants of the current and future distribution of seven Ottelia Pers. species in African freshwater bodies

Ngarega

Nzei

Saina

et al. 2021

Preprint

View full text Add to dashboard Cite

Understanding the influence of environmental covariates on plants’ distribution is critical, especially for aquatic plant species. Climate change is likely to alter the distribution of aquatic species. However, knowledge of this change on the burden of aquatic macroorganisms is often fraught with difficulty. Ottelia Pers., a model genus for studying the evolution of the aquatic family Hydrocharitaceae, is mainly distributed in slow-flowing creeks, rivers or lakes throughout the world’s pantropical areas. Due to recent rapid climate changes, the natural Ottelia populations have declined significantly. In the present study, we use maximum entropy (MaxEnt) to explore the environmental drivers of seven Ottelia species distribution in African freshwater bodies. The models use known background points to determine how environmental covariates vary spatially and produce continental maps of these species’ distribution. We also estimate the possible influences of the optimistic and extreme pessimistic Intergovernmental Panel on Climate Change (IPCC) pathway scenarios and identify high suitability areas under these scenarios. Model performances were statistically significant than random expectations with Area Under Curve (AUC) values above 0.831, indicating the good performance of the models. We observe that our studied Ottelia species had distinct spatial patterns influenced by climate variations (e.g. Bio9- mean temperature of driest quarter, Bio12- annual precipitation, and Bio14- Precipitation of the driest month). While there is a lack of accord in defining the limiting factors for the distribution of the seven species, it is clear that water-temperature conditions have promising effects when kept within optimal ranges. Niche overlap analyses showed that most Ottelia species have similar but not equivalent climatic niches. In addition, considering the expected warming in the future, the persistence and survival of the Ottelia species in Africa could be compromised. The present findings provide a theoretical basis for the distribution of various Ottelia species in Africa.

show abstract

Conservation strategy for aquatic plants: endangered Ottelia acuminata (Hydrocharitaceae) as a case study

Cited by 18 publications

References 45 publications

Genetic Diversity of Stratiotes aloides L. (Hydrocharitaceae) Stands across Europe

Genetic Diversity of Stratiotes aloides L. (Hydrocharitaceae) Stands across Europe

The complete chloroplast genome of Ottelia acuminata var. songmingensis, an Endangered aquatic macrophyte in China

Environmental determinants of the current and future distribution of seven Ottelia Pers. species in African freshwater bodies

Contact Info

Product

Resources

About