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Conceição TA, Santos AS, Fernandes AKC, Meireles GN, de Oliveira FA, Barbosa RM, Gaiotto FA. Guiding seed movement: environmental heterogeneity drives genetic differentiation in Plathymenia reticulata, providing insights for restoration. AOB PLANTS 2024; 16:plae032. [PMID: 38883565 PMCID: PMC11176975 DOI: 10.1093/aobpla/plae032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 05/28/2024] [Indexed: 06/18/2024]
Abstract
Forest and landscape restoration is one of the main strategies for overcoming the environmental crisis. This activity is particularly relevant for biodiversity-rich areas threatened by deforestation, such as tropical forests. Efficient long-term restoration requires understanding the composition and genetic structure of native populations, as well as the factors that influence these genetic components. This is because these populations serve as the seed sources and, therefore, the gene reservoirs for areas under restoration. In the present study, we investigated the influence of environmental, climatic and spatial distance factors on the genetic patterns of Plathymenia reticulata, aiming to support seed translocation strategies for restoration areas. We collected plant samples from nine populations of P. reticulata in the state of Bahia, Brazil, located in areas of Atlantic Forest and Savanna, across four climatic types, and genotyped them using nine nuclear and three chloroplast microsatellite markers. The populations of P. reticulata evaluated generally showed low to moderate genotypic variability and low haplotypic diversity. The populations within the Savanna phytophysiognomy showed values above average for six of the eight evaluated genetic diversity parameters. Using this classification based on phytophysiognomy demonstrated a high predictive power for genetic differentiation in P. reticulata. Furthermore, the interplay of climate, soil and geographic distance influenced the spread of alleles across the landscape. Based on our findings, we propose seed translocation, taking into account the biome, with restricted use of seed sources acquired or collected from the same environment as the areas to be restored (Savanna or Atlantic Forest).
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Affiliation(s)
- Taise Almeida Conceição
- Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, USP, Piracicaba, São Paulo 13418-900, Brazil
| | - Alesandro Souza Santos
- Laboratório de Marcadores Moleculares, Centro de Biotecnologia e Genética, Universidade Estadual de Santa Cruz, Rodovia Ilhéus-Itabuna, km 16, Ilhéus, Bahia 45662-900, Brazil
- Laboratório de Ecologia Aplicada à Conservação, Programa de Pós-Graduação em Ecologia e Conservação da Biodiversidade, Universidade Estadual de Santa Cruz, Rodovia Ilhéus-Itabuna, km 16, Ilhéus, Bahia 45662-900, Brazil
| | - Ane Karoline Campos Fernandes
- Laboratório de Marcadores Moleculares, Centro de Biotecnologia e Genética, Universidade Estadual de Santa Cruz, Rodovia Ilhéus-Itabuna, km 16, Ilhéus, Bahia 45662-900, Brazil
| | - Gabriela Nascimento Meireles
- Laboratório de Marcadores Moleculares, Centro de Biotecnologia e Genética, Universidade Estadual de Santa Cruz, Rodovia Ilhéus-Itabuna, km 16, Ilhéus, Bahia 45662-900, Brazil
| | - Fernanda Ancelmo de Oliveira
- Centro de Biologia Molecular e Engenharia Genética (CBMEG), Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, UNICAMP, Campinas, São Paulo 13083-875, Brazil
| | - Rafael Marani Barbosa
- Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz, Rodovia Ilhéus-Itabuna, km 16, Ilhéus, Bahia 45662-900, Brazil
| | - Fernanda Amato Gaiotto
- Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, USP, Piracicaba, São Paulo 13418-900, Brazil
- Laboratório de Ecologia Aplicada à Conservação, Programa de Pós-Graduação em Ecologia e Conservação da Biodiversidade, Universidade Estadual de Santa Cruz, Rodovia Ilhéus-Itabuna, km 16, Ilhéus, Bahia 45662-900, Brazil
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Van Rossum F, Le Pajolec S. Maternal effects and inbreeding depression in post-translocation progeny of Campanula glomerata. PLANT BIOLOGY (STUTTGART, GERMANY) 2024; 26:427-436. [PMID: 38427439 DOI: 10.1111/plb.13631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 01/25/2024] [Indexed: 03/03/2024]
Abstract
Evaluation of plant translocation success based on fitness-related quantitative traits combined with molecular markers may contribute to a finer assessment of inbreeding, selective and rescue processes, which might have long-term consequences for population dynamics and viability. We investigated fitness traits (seed germination, seedling viability, and juvenile growth and mortality) combined with 15 microsatellite loci of the first post-translocation seed progeny from two translocated populations of Campanula glomerata, an insect-pollinated, self-incompatible perennial herb. We examined whether inbreeding, heterosis through admixture, translocation site and maternal transplant seed source origin and lineage might affect seed quality and juvenile growth in controlled cultivation conditions. Flower production and seed germination of the transplants was higher in one of the two translocation sites, which might be related to differences in soil and vegetation composition and cover. Strong maternal effects related to seed source origin and lineage were found on progeny size, with the largest transplants producing the largest progeny. The differences in rosette diameter were maintained across the whole growth period measured. There was inbreeding depression (rather than heterosis) related to biparental inbreeding at the early progeny growth stage, also expressed through juvenile mortality. Our findings highlight that maternal transplant origin, especially when seed sources consisted of small, fragmented remnants, might have a selective value on fitness in the post-translocation generations. If maternal effects and inbreeding depression persist, they might affect global genetic diversity patterns in the long term. Further admixture in the next generations might buffer maternal and inbreeding effects or lead to outbreeding depression.
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Affiliation(s)
- F Van Rossum
- Meise Botanic Garden, Meise, Belgium
- Service général de l'Enseignement supérieur et de la Recherche scientifique, Fédération Wallonie-Bruxelles, Brussels, Belgium
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Morris AB, Visger CJ, Fox SJ, Scalf C, Fleming S, Call G. Defining Populations and Predicting Future Suitable Niche Space in the Geographically Disjunct, Narrowly Endemic Leafy Prairie-Clover ( Dalea foliosa; Fabaceae). PLANTS (BASEL, SWITZERLAND) 2024; 13:495. [PMID: 38498467 PMCID: PMC10891826 DOI: 10.3390/plants13040495] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/30/2024] [Accepted: 02/06/2024] [Indexed: 03/20/2024]
Abstract
Conservation actions for rare species are often based on estimates of population size and number, which are challenging to capture in natural systems. Instead, many definitions of populations rely on arbitrarily defined distances between occurrences, which is not necessarily biologically meaningful despite having utility from a conservation management perspective. Here, we introduce a case study using the narrowly endemic and highly geographically disjunct leafy prairie-clover (Dalea foliosa), for which we use nuclear microsatellite loci to assess the current delimitations of populations and management units across its entire known range. We model future potential suitable niche space for the species to assess how currently defined populations could fare under predicted changes in climate over the next 50 years. Our results indicate that genetic variation within the species is extremely limited, particularly so in the distal portions of its range (Illinois and Alabama). Within the core of its range (Tennessee), genetic structure is not consistent with populations as currently defined. Our models indicate that predicted suitable niche space may only marginally overlap with the geology associated with this species (limestone glades and dolomite prairies) by 2070. Additional studies are needed to evaluate the extent to which populations are ecologically adapted to local environments and what role this could play in future translocation efforts.
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Affiliation(s)
- Ashley B. Morris
- Department of Biology, Furman University, Greenville, SC 29613, USA;
- Independent Researcher, San Antonio, TX 78247, USA;
| | - Clayton J. Visger
- Department of Biological Sciences, California State University, Sacramento, CA 95819, USA;
| | - Skyler J. Fox
- Department of Biology, Furman University, Greenville, SC 29613, USA;
- Department of Biology, Georgia Southern University, Statesboro, GA 30458, USA
| | | | - Sunny Fleming
- Environmental Systems Research Institute, Inc. (ESRI), Redlands, CA 92373, USA;
| | - Geoff Call
- Tennessee Ecological Services Field Office, U.S. Fish and Wildlife Service, Cookeville, TN 38501, USA;
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Van Rossum F, Godé C, Baruca Arbeiter A, Raspé O, Simsek M, Barigand B, Hardy OJ, Bandelj D. Genetic diversity assessment of Helichrysum arenarium (Asteraceae) for the genetic restoration of declining populations. Ecol Evol 2024; 14:e10953. [PMID: 38371858 PMCID: PMC10869947 DOI: 10.1002/ece3.10953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/14/2023] [Accepted: 12/04/2023] [Indexed: 02/20/2024] Open
Abstract
Helichrysum arenarium (L.) Moench (Asteraceae) is a self-compatible, insect-pollinated herb occurring in sand grasslands, and is declining and endangered in many parts of its European distribution range. A recovery plan of H. arenarium has been conducted in southern Belgium, involving plant translocations. We developed multiplex genotyping protocol for nine microsatellite markers previously published for Helichrysum italicum and two newly developed microsatellite markers for H. arenarium. Eleven polymorphic loci were associated (pooled) in two multiplex panels, to assess the genetic status of the only small remaining population in Belgium and of three large German populations used as seed source for propagating transplants. The small Belgian population was characterized by high clonality, with only two, however heterozygous, genets detected. The three large German populations showed high genetic diversity (H e ranging from 0.635 to 0.670) and no significant inbreeding coefficient values, despite expectations of geitonogamous selfing. Management practices (grazing livestock) increasing seed dispersal distances, inbreeding depression at early stages of development, and mechanisms preventing or delaying selfing might be hypothesized to explain the observed patterns. The two Belgian genotypes remained within genetic variation range of German populations so that the high genetic differentiation between Belgian and German populations (F ST values ranging from 0.186 to 0.206) likely resulted from genetic drift effects and small sample size. Transplants obtained from seeds sampled from the three large source populations from Germany constitute a highly diverse, noninbred gene pool, and are thus of high genetic quality for plant translocations.
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Affiliation(s)
- Fabienne Van Rossum
- Meise Botanic GardenMeiseBelgium
- Service Général de l'Enseignement Supérieur et de la Recherche Scientifique, Fédération Wallonie‐BruxellesBrusselsBelgium
| | - Cécile Godé
- Univ. Lille, CNRS, UMR 8198 ‐ Evo‐Eco‐PaleoLilleFrance
| | - Alenka Baruca Arbeiter
- Faculty of Mathematics, Natural Sciences and Information TechnologiesUniversity of PrimorskaKoperSlovenia
| | - Olivier Raspé
- Meise Botanic GardenMeiseBelgium
- Service Général de l'Enseignement Supérieur et de la Recherche Scientifique, Fédération Wallonie‐BruxellesBrusselsBelgium
| | - Melike Simsek
- Unit of Evolutionary Biology and EcologyUniversité Libre de BruxellesBrusselsBelgium
| | - Benjamin Barigand
- Unit of Evolutionary Biology and EcologyUniversité Libre de BruxellesBrusselsBelgium
| | - Olivier J. Hardy
- Unit of Evolutionary Biology and EcologyUniversité Libre de BruxellesBrusselsBelgium
| | - Dunja Bandelj
- Faculty of Mathematics, Natural Sciences and Information TechnologiesUniversity of PrimorskaKoperSlovenia
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Van Rossum F. Sibship and parentage reconstruction as a genetic tool for designing and monitoring plant translocations. Restor Ecol 2022. [DOI: 10.1111/rec.13726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fabienne Van Rossum
- Meise Botanic Garden Nieuwelaan 38, 1860 Meise Belgium
- Service général de l'Enseignement supérieur et de la Recherche scientifique, Fédération Wallonie‐Bruxelles rue A. Lavallée 1, 1080 Brussels Belgium
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