Restoration of the Endangered Ruth's Golden Aster (<i>Pityopsis ruthii</i>)

Wadl, Phillip A.; Saxton, Arnold M.; Call, Geoff; Dattilo, Adam J.

doi:10.1656/058.017.0101

Cited by 2 publications

(4 citation statements)

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“…Ongoing pollination studies and reintroduction efforts add to the effort base of knowledge on the ecology of this endangered species ( Wadl et al, 2014 , 2018 ; Moore et al, 2016 ). With the habitat and topography of P. ruthii , surrounded by high ridges and ineffective seed dispersal mechanisms, the species may not be able to migrate with warming climates.…”

Section: Discussionmentioning

confidence: 99%

“…Along with understanding the ecology of the species, a viable method of introducing diversity into the natural habitat is necessary. Cultivation of plants is possible through both stem cuttings and tissue culture, providing methods for reintroduction studies; it is feasible to grow P. ruthii seedlings in vitro and transplant seamlessly into the natural habitat ( Wadl et al, 2014 , 2018 ).…”

Section: Discussionmentioning

confidence: 99%

“…Studies on genetic diversity have been limited prior to the development of microsatellite markers for P. ruthii ( Wadl et al, 2011a ). Notably, in vitro ( Wadl et al, 2011b ) as well as vegetative ( Wadl et al, 2014 ) propagation methods for P. ruthii were developed to enable reintroduction and augmentation studies ( Wadl et al, 2018 ). The U.S.…”

Section: Introductionmentioning

confidence: 99%

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Population Structure and Genetic Diversity Within the Endangered Species Pityopsis ruthii (Asteraceae)

et al. 2018

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Pityopsis ruthii (Ruth’s golden aster) is a federally endangered herbaceous perennial endemic to the Hiwassee and Ocoee Rivers in southeastern Tennessee, United States. Comprehensive genetic studies providing novel information to conservationists for preservation of the species are lacking. Genetic variation and gene flow were evaluated for 814 individuals from 33 discrete locations using polymorphic microsatellites: seven chloroplast and twelve nuclear. A total of 198 alleles were detected with the nuclear loci and 79 alleles with the chloroplast loci. Gene flow was estimated, with the Hiwassee River (Nm = 2.16; FST = 0.15) showing higher levels of gene flow and lower levels of population differentiation than the Ocoee River (Nm = 1.28; FST = 0.19). Population structure was examined using Bayesian cluster analyses. Nuclear and chloroplast analyses were incongruent. From the chloroplast microsatellites, three clusters were identified; all were present in sampling sites at both rivers, indicating a lack of allele fixation along rivers. Nuclear markers revealed two clusters and separated by river. When the Hiwassee River locations were analyzed, four clusters were identified for both the chloroplast and nuclear microsatellites, though the individuals clustered differently. Analysis of the Ocoee River revealed two clusters for the chloroplast microsatellites and three for the nuclear microsatellites. We recommend P. ruthii be managed as four populations for the Hiwassee River and three populations for the Ocoee River. Our results provide critical genetic information for P. ruthii that can be used for species management decisions to drive future population augmentation/reintroduction and ex situ conservation efforts.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Population Structure and Genetic Diversity Within the Endangered Species Pityopsis ruthii (Asteraceae)

et al. 2018

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“…The first five-year review of P. ruthii [ 40 ] summarized the results of several projects that were completed during the 1990s and early 2000s to implement tasks described in the species’ recovery plan. Beginning around 2010, researchers began a more recent phase of recovery projects to better understand the ecology of P. ruthii and address ongoing and potential future threats to the species [ 10 , 13 , 25 , 28 , 29 , 38 , 41 , 42 , 43 , 44 ]. These efforts focused on multiple topics including completion of on-the-ground delineation of populations along the Hiwassee River, evaluating propagation and reintroduction techniques, permanent monitoring, pests and pathogens, pollination ecology, and population genetics.…”

Section: Conclusion: Recovery Implementation and Future Directionsmentioning

confidence: 99%

Pityopsis ruthii: An Updated Review of Conservation Efforts for an Endangered Plant

Wadl

Dattilo

Call

et al. 2023

Plants

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Pityopsis ruthii (Small) Small, Ruth’s golden aster, is an endangered Asteraceae species that grows in the riparian zone along small sections of two rivers in the Southern Appalachian Mountains of the United States of America (USA). Since 1985, the species has been listed under the Endangered Species Act by the United States Fish and Wildlife Service (USFWS). The mission of the USFWS is to conserve, protect, and enhance fish, wildlife, and plants and their habitats for the continued benefit of the American people. The agency provides national leadership in the recovery and conservation of imperiled plant species by working with the scientific community to protect important habitats, increase species’ populations, and identify and reduce threats to species survival with the goal of removal from federal protection. Over the past 35 years, research efforts have focused on studies designed to delineate the range and size of populations, determine habitat requirements, reproductive and propagation potential, and understand the demographic, ecological, and genetic factors that may increase vulnerability to extinction for P. ruthii. Cooperative partnerships have driven the completion of actions called for in the strategy to recover P. ruthii, and in this review, we highlight these efforts within the context of species conservation.

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Restoration of the Endangered Ruth's Golden Aster (Pityopsis ruthii)

Cited by 2 publications

References 13 publications

Population Structure and Genetic Diversity Within the Endangered Species Pityopsis ruthii (Asteraceae)

Population Structure and Genetic Diversity Within the Endangered Species Pityopsis ruthii (Asteraceae)

Pityopsis ruthii: An Updated Review of Conservation Efforts for an Endangered Plant

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