Pollinator‐mediated gene flow fosters genetic variability in a narrow alpine endemic, <i>Abronia alpina</i> (Nyctaginaceae)

Jabis, Meredith D.; Ayers, Tina J.; Allan, Gerard J.

doi:10.3732/ajb.1000515

Cited by 18 publications

(19 citation statements)

References 90 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Diversity estimates were also similar to comparable AFLP studies in non related herbaceous perennial insect pollinated species, such as Silene chlorantha (Willd.) (0.20) [34], Abronia alpina Brandegee (.28) [64], and Echinacea laevigata (Boynton and Beadle) Blake (0.26) [65].…”

Section: Discussionmentioning

confidence: 99%

Conserving Plants in Gene Banks and Nature: Investigating Complementarity with Trifolium thompsonii Morton

Greene

Kisha

et al. 2014

PLoS ONE

View full text Add to dashboard Cite

A standard conservation strategy for plant genetic resources integrates in situ (on-farm or wild) and ex situ (gene or field bank) approaches. Gene bank managers collect ex situ accessions that represent a comprehensive snap shot of the genetic diversity of in situ populations at a given time and place. Although simple in theory, achieving complementary in situ and ex situ holdings is challenging. Using Trifolium thompsonii as a model insect-pollinated herbaceous perennial species, we used AFLP markers to compare genetic diversity and structure of ex situ accessions collected at two time periods (1995, 2004) from four locations, with their corresponding in situ populations sampled in 2009. Our goal was to assess the complementarity of the two approaches. We examined how gene flow, selection and genetic drift contributed to population change. Across locations, we found no difference in diversity between ex situ and in situ samples. One population showed a decline in genetic diversity over the 15 years studied. Population genetic differentiation among the four locations was significant, but weak. Association tests suggested infrequent, long distance gene flow. Selection and drift occurred, but differences due to spatial effects were three times as strong as differences attributed to temporal effects, and suggested recollection efforts could occur at intervals greater than fifteen years. An effective collecting strategy for insect pollinated herbaceous perennial species was to sample >150 plants, equalize maternal contribution, and sample along random transects with sufficient space between plants to minimize intrafamilial sampling. Quantifying genetic change between ex situ and in situ accessions allows genetic resource managers to validate ex situ collecting and maintenance protocols, develop appropriate recollection intervals, and provide an early detection mechanism for identifying problematic conditions that can be addressed to prevent further decline in vulnerable in situ populations.

show abstract

Section: Discussionmentioning

confidence: 99%

Conserving Plants in Gene Banks and Nature: Investigating Complementarity with Trifolium thompsonii Morton

Greene

Kisha

et al. 2014

PLoS ONE

View full text Add to dashboard Cite

show abstract

“…Abronia alpina is a rare alpine species endemic to the southern Sierra Nevada that is obligately outcrossing, making it dependent on pollinators to maintain genetic diversity. Although genetic diversity is currently high, a loss or upward elevational migration of pollinators will minimally result in a loss of genetic diversity and possibly extinction (Jabis et al, 2011). It is critical to the persistence of California's alpine plant taxa that assessments of population genetic diversity and connectivity and projections to habitat change be conducted.…”

Section: Alpine Habitatsmentioning

confidence: 99%

Population-level genetic variation and climate change in a biodiversity hotspot

Schierenbeck

2017

Ann Bot

View full text Add to dashboard Cite

Introduction Estimated future climate scenarios can be used to predict where hotspots of endemism may occur over the next century, but life history, ecological and genetic traits will be important in informing the varying responses within myriad taxa. Essential to predicting the consequences of climate change to individual species will be an understanding of the factors that drive genetic structure within and among populations. Here, I review the factors that influence the genetic structure of plant species in California, but are applicable elsewhere; existing levels of genetic variation, life history and ecological characteristics will affect the ability of an individual taxon to persist in the presence of anthropogenic change.Factors influencing the distribution of genetic variation Persistence in the face of climate change is likely determined by life history characteristics: dispersal ability, generation time, reproductive ability, degree of habitat specialization, plant-insect interactions, existing genetic diversity and availability of habitat or migration corridors. Existing levels of genetic diversity in plant populations vary based on a number of evolutionary scenarios that include endemism, expansion since the last glacial maximum, breeding system and current range sizes.Regional priorities and examples A number of well-documented examples are provided from the California Floristic Province. Some predictions can be made for the responses of plant taxa to rapid environmental changes based on geographic position, evolutionary history, existing genetic variation, and ecological amplitude.Conclusions, Solutions and Recommendations The prediction of how species will respond to climate change will require a synthesis drawing from population genetics, geography, palaeontology and ecology. The important integration of the historical factors that have shaped the distribution and existing genetic structure of California's plant taxa will enable us to predict and prioritize the conservation of species and areas most likely to be impacted by rapid climate change, human disturbance and invasive species.

show abstract

“…through ecological fitting [5]) and assortative mating based on host preference. Even low levels of pleiotropy between leaf and flower chemistry can reinforce pollinator-mediated gene flow [6][7][8][9]. Antagonistic (e.g.…”

Section: Introductionmentioning

confidence: 99%

Chemical cues and genetic divergence in insects on plants: conceptual cross pollination between mutualistic and antagonistic systems

Segar

Volf

Sisol

et al. 2019

Current Opinion in Insect Science

View full text Add to dashboard Cite

show abstract

Pollinator‐mediated gene flow fosters genetic variability in a narrow alpine endemic, Abronia alpina (Nyctaginaceae)

Cited by 18 publications

References 90 publications

Conserving Plants in Gene Banks and Nature: Investigating Complementarity with Trifolium thompsonii Morton

Conserving Plants in Gene Banks and Nature: Investigating Complementarity with Trifolium thompsonii Morton

Population-level genetic variation and climate change in a biodiversity hotspot

Chemical cues and genetic divergence in insects on plants: conceptual cross pollination between mutualistic and antagonistic systems

Contact Info

Product

Resources

About