دورية أكاديمية
Seed Functional Traits Provide Support for Ecological Restoration and ex situ Conservation in the Threatened Amazon Ironstone Outcrop Flora.
| العنوان: | Seed Functional Traits Provide Support for Ecological Restoration and ex situ Conservation in the Threatened Amazon Ironstone Outcrop Flora. |
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| المؤلفون: | Zanetti M; Bioma meio Ambiente LTDA, Nova Lima, Brazil.; Departamento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil., Dayrell RLC; School of Biological Sciences, University of Western Australia (UWA), Perth, WA, Australia., Wardil MV; Departamento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.; Amplo Engenharia e Gestão de Projetos LTDA, Belo Horizonte, Brazil., Damasceno A; VALE S/A. Environmental Licensing Management, Mina de Águas Claras, Nova Lima, Brazil., Fernandes T; VALE S/A. Environmental Licensing Management, Mina de Águas Claras, Nova Lima, Brazil., Castilho A; VALE S/A. Environmental Licensing Management, Mina de Águas Claras, Nova Lima, Brazil., Santos FMG; VALE S/A. Environmental Licensing Management, Mina de Águas Claras, Nova Lima, Brazil., Silveira FAO; Departamento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil. |
| المصدر: | Frontiers in plant science [Front Plant Sci] 2020 Dec 08; Vol. 11, pp. 599496. Date of Electronic Publication: 2020 Dec 08 (Print Publication: 2020). |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Frontiers Research Foundation Country of Publication: Switzerland NLM ID: 101568200 Publication Model: eCollection Cited Medium: Print ISSN: 1664-462X (Print) Linking ISSN: 1664462X NLM ISO Abbreviation: Front Plant Sci Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Original Publication: Lausanne : Frontiers Research Foundation, 2010- |
| مستخلص: | Cangas (ironstone outcrops) host a specialized flora, characterized by high degree of edaphic endemism and an apparent lack of natural history knowledge of its flora. Due to intense pressure from iron ore mining this ecosystem is under threat and in need of restoration. We studied seed functional traits that are relevant for restoration, translocation and ex situ conservation in 48 species from cangas in eastern Amazon. Were determined the thermal niche breadth, classified seed dormancy and determined methods to overcome it, determined the effect of seed storage on germination, tested the association between germination traits and functional groups, and tested whether seed traits are phylogenetically conserved. We found a broad interspecific variation in most seed traits, except for seed water content. Large interspecific variation in the temperature niche breadth was found among the studied species, but only four species, showed optimum germination at high temperatures of 35-40°C, despite high temperatures under natural conditions. Only 35% of the studied species produced dormant seeds. Mechanical scarification was effective in overcoming physical dormancy and application of gibberellic acid was effective in overcoming physiological dormancy in five species. For the 29 species that seeds were stored for 24 months, 76% showed decreases in the germination percentage. The weak association between germination traits and life-history traits indicate that no particular plant functional type requires specific methods for seed-based translocations. Exceptions were the lianas which showed relatively larger seeds compared to the other growth-forms. Dormancy was the only trait strongly related to phylogeny, suggesting that phylogenetic relatedness may not be a good predictor of regeneration from seeds in cangas. Our study provides support to better manage seed sourcing, use, storage and enhancement techniques with expected reduced costs and increased seedling establishment success. Competing Interests: The research was funded by VALE. AD, TF, AC, and FSa are employees of VALE. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2020 Zanetti, Dayrell, Wardil, Damasceno, Fernandes, Castilho, Santos and Silveira.) |
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| فهرسة مساهمة: | Keywords: Carajás; conservation; dormancy; functional traits; germination requirements; phylogeny; seed quality |
| تواريخ الأحداث: | Date Created: 20210111 Latest Revision: 20231104 |
| رمز التحديث: | 20231104 |
| مُعرف محوري في PubMed: | PMC7793850 |
| DOI: | 10.3389/fpls.2020.599496 |
| PMID: | 33424895 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1664-462X |
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| DOI: | 10.3389/fpls.2020.599496 |