Range shift and loss of genetic diversity under climate change in Caryocar brasiliense, a Neotropical tree species

In self-compatible plants, the reduction in brood size may be caused either by inbreeding depression, resource limitation, maternal regulation of offspring quality, or by sibling rivalry. We studied seed abortion in Caryocar brasiliense Camb. (Caryocaraceae), a Neotropical tree species, to verify whether seeds sired by self-pollination are aborted. Fruits were sampled from 23 mother trees to estimate seed set and proportion of aborted seeds. Ripened and aborted seeds from 18 mother trees were genotyped using 10 microsatellite loci together with mother trees and all nearby adults (83 adults) to determine the pollen donor by assignment test. From the 541 seeds, 190 were aborted and the mean number of aborted seeds per fruit was 0.627 (SD = 0.807). Proportion of aborted seeds was different among mother trees and among fruits within mother trees. All but three aborted seeds were sired by self-pollination and selfed seeds were aborted in fruits harbouring both selfed and outcrossed seeds. Aborted outcrossed seeds were sired by pollen donors closely related to mother trees. Our results strongly support that seed abortion in C. brasiliense may be the outcome of inbreeding depression and sibling rivalry when selfed and outcross pollinated ovules compete.

Download Full-text

Aquaporins in the wild: natural genetic diversity and selective pressure in the PIP gene family in five Neotropical tree species

BMC Evolutionary Biology ◽

10.1186/1471-2148-10-202 ◽

2010 ◽

Vol 10 (1) ◽

pp. 202 ◽

Cited By ~ 11

Author(s):

Delphine Audigeos ◽

Anna Buonamici ◽

Laurent Belkadi ◽

Paul Rymer ◽

David Boshier ◽

...

Keyword(s):

Genetic Diversity ◽

Gene Family ◽

Tree Species ◽

Selective Pressure ◽

Neotropical Tree ◽

In The Wild

Download Full-text

Genetic diversity assessment for Eugenia uniflora L., E. pyriformis Cambess., E. brasiliensis Lam. and E. francavilleana O. Berg neotropical tree species (Myrtaceae) with heterologous SSR markers

Genetic Resources and Crop Evolution ◽

10.1007/s10722-013-0028-7 ◽

2014 ◽

Vol 61 (1) ◽

pp. 267-272 ◽

Cited By ~ 8

Author(s):

Ronai Ferreira-Ramos ◽

Klaus Alvaro Guerrieri Accoroni ◽

Ariany Rossi ◽

Marcela Corbo Guidugli ◽

Moacyr Antonio Mestriner ◽

...

Keyword(s):

Genetic Diversity ◽

Ssr Markers ◽

Tree Species ◽

Eugenia Uniflora ◽

Neotropical Tree ◽

Diversity Assessment

Download Full-text

Correction: Loss of Genetic Diversity and Increased Subdivision in an Endemic Alpine Stonefly Threatened by Climate Change

PLoS ONE ◽

10.1371/journal.pone.0159931 ◽

2016 ◽

Vol 11 (7) ◽

pp. e0159931 ◽

Cited By ~ 2

Author(s):

Steve Jordan ◽

J. Joseph Giersch ◽

Clint C. Muhlfeld ◽

Scott Hotaling ◽

Liz Fanning ◽

...

Keyword(s):

Climate Change ◽

Genetic Diversity ◽

Correction Loss ◽

Loss Of Genetic Diversity

Download Full-text

Demographical history and palaeodistribution modelling show range shift towards Amazon Basin for a Neotropical tree species in the LGM

BMC Evolutionary Biology ◽

10.1186/s12862-016-0779-9 ◽

2016 ◽

Vol 16 (1) ◽

Cited By ~ 11

Author(s):

Luciana Cristina Vitorino ◽

Matheus S. Lima-Ribeiro ◽

Levi Carina Terribile ◽

Rosane G. Collevatti

Keyword(s):

Tree Species ◽

Amazon Basin ◽

Range Shift ◽

Neotropical Tree

Download Full-text

Dynamische Generhaltung in Europas Wäldern: Paneuropäische Konzepte nehmen Gestalt an

Schweizerische Zeitschrift fur Forstwesen ◽

10.3188/szf.2016.0325 ◽

2016 ◽

Vol 167 (6) ◽

pp. 325-332

Author(s):

Silvio Schueler ◽

Heino Konrad

Keyword(s):

Climate Change ◽

Genetic Diversity ◽

Tree Species ◽

Gene Conservation ◽

Conservation Units ◽

Ecological Zones ◽

Local Environments ◽

Conservation Actions ◽

Forest Genetic ◽

Minimum Requirements

Dynamic gene conservation in European forests: Pan-European concepts shaping up Forests in Europe consist mainly of wild, undomesticated tree populations showing high genetic variation that has been shaped by postglacial migration and manifold adaptations to their local environments. To conserve this genetic diversity, many European countries have developed programs for the conservation of forest genetic resources, which consist not only of seed orchards but also of forest stands for in situ gene conservation. The long-term aim of the so called “dynamic gene conservation” is the maintenance of the most important ecological and, on a longer time scale, evolutionary processes. In the European cooperation project EUFGIS, Pan-European minimum requirements for units of dynamic gene conservation in forests were developed. On the basis of these criteria, a common database of all these identified units was established. Moreover, the representativeness of the nominated conservation units for ecological zones and continental hot spots of genetic diversity was analyzed, and the vulnerability of the network under climate change was investigated. This analysis showed that the present network of dynamic conservation units for various tree species contains significant gaps in its ecological and phylogenetic representativeness and indicates that up to 65% of the nominated conservation units of a target tree species will be highly vulnerable under climate change. Therefore, the network of gene conservation units needs to be extended, and additional transnational conservation actions including European assisted migration schemes should be considered.

Download Full-text

Introduction

A Practical Guide for Genetic Management of Fragmented Animal and Plant Populations ◽

10.1093/oso/9780198783411.003.0001 ◽

2019 ◽

pp. 1-12

Author(s):

Richard Frankham ◽

Jonathan D. Ballou ◽

Katherine Ralls ◽

Mark D. B. Eldridge ◽

Michele R. Dudash ◽

...

Keyword(s):

Climate Change ◽

Genetic Diversity ◽

Gene Flow ◽

Global Climate Change ◽

Global Climate ◽

Extinction Risk ◽

Genetic Erosion ◽

Isolated Populations ◽

Genetic Management ◽

Loss Of Genetic Diversity

Genetic management of fragmented populations is one of the major, largely unaddressed issues in biodiversity conservation. Many species across the planet have fragmented distributions with small isolated populations that are potentially suffering from inbreeding and loss of genetic diversity (genetic erosion), leading to elevated extinction risk. Fortunately, genetic deterioration can usually be remedied by gene flow from another population (crossing between populations within species), yet this is rarely done, in part because of fears that crossing may be harmful (but we can predict when this will occur). We address management of gene flow between previously isolated populations and genetic management under global climate change.

Download Full-text

Genetic Diversity and Range Dynamics of Helleborus odorus subsp. cyclophyllus under Different Climate Change Scenarios

Forests ◽

10.3390/f11060620 ◽

2020 ◽

Vol 11 (6) ◽

pp. 620 ◽

Cited By ~ 2

Author(s):

Georgia Fassou ◽

Konstantinos Kougioumoutzis ◽

Gregoris Iatrou ◽

Panayiotis Trigas ◽

Vasileios Papasotiropoulos

Keyword(s):

Climate Change ◽

Genetic Diversity ◽

Range Shift ◽

Mountain Forest ◽

Mountain Range ◽

Peripheral Populations ◽

Climate Change Scenarios ◽

Genetic Composition ◽

The Balkans ◽

Genetic Diversity And Structure

Research Highlights: The effects of climate change on habitat loss, range shift and/or genetic impoverishment of mid-elevation plants has received less attention compared to alpine species. Moreover, genetic diversity patterns of mountain forest herbaceous species have scarcely been explored in the Balkans. In this context, our study is the first that aims to examine Helleborus odorus subsp. cyclophyllus, a medicinal plant endemic to the southern part of the Balkan Peninsula. Background and Objectives: We compare its genetic diversity and structure along the continuous mountain range of western Greece with the topographically less structured mountains of eastern Greece, and predict its present and future habitat suitability, using several environmental variables. Materials and Methods: Inter Simple Sequence Repeat (ISSR) markers were used to genotype 80 individuals from 8 populations, covering almost the species’ entire distribution range in Greece. We investigated the factors shaping its genetic composition and driving its current and future distribution. Results: High gene diversity (0.2239–0.3319), moderate population differentiation (0.0317–0.3316) and increased gene flow (Nm = 1.3098) was detected. According to any GCM/RCP/climate database combination, Helleborus odorus subsp. cyclophyllus is projected to lose a significant portion of its current distribution by 2070 and follow a trend towards genetic homogenization. Conclusions: Populations exhibit in terms of genetic structure a west–east genetic split, which becomes more evident southwards. This is mainly due to geographic/topographic factors and their interplay with Quaternary climatic oscillations, and to environmental constraints, which may have a negative impact on the species’ future distribution and genetic composition. Pindos mountain range seems to buffer climate change effects and will probably continue to host several populations. On the other hand, peripheral populations have lower genetic diversity compared to central populations, but still hold significant evolutionary potential due to the private alleles they maintain.

Download Full-text