Browsing by Autor "Niklas Tysklind"

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A dated phylogeny of the Neotropical Dipterygeae clade reveals 30 million years of winged papilionate floral conservatism in the otherwise florally labile early-branching papilionoid legumes
(Oxford University Press, 2023) Catarina Silva de Carvalho; Haroldo Cavalcante de Lima; Maristerra R. Lemes; Charles E. Zartman; Cássio van den Berg; Carmen Rosa GARCÍA-DÁVILA; Eurídice N. Honorio Coronado; Malte Mäder; Kathelyn Paredes-Villanueva; Niklas Tysklind
Abstract The early-branching clades of Fabaceae subfamily Papilionoideae are characterized by their remarkable lability in floral architecture. In contrast, more derived papilionoid lineages are marked by evolutionary conservatism towards strongly bilateral, papilionate flowers. Here, we show an unexpected example of conservatism of a unique floral architecture during the early diversification history of the papilionoids. We built the most comprehensively sampled molecular phylogenetic tree with a focus on the early-diverging papilionoid Dipterygeae clade to evaluate conservatism of the winged papilionate architecture and associated traits related to flower specialization (e.g. zygomorphy, petal differentiation, stable stamen number and stamen sheath). Dipterygeae comprise c. 22 species of mostly giant trees from across tropical forests in Central America and the Amazon, but they are also ecologically dominant in the savannas of the Brazilian Central Plateau. Phylogenetic analyses of nuclear ribosomal ITS/5.8S and plastid matK and trnL intron sequences strongly supported inter-relationships and the monophyly of each genus (Dipteryx, Monopteryx, Pterodon and Taralea). Bayesian relaxed-clock dating and a Bayesian model of ancestral character estimation revealed c. 30 Myr of conservatism of all winged papilionate-related flower traits in a clade comprising the most recent common ancestor of Dipteryx, Pterodon and Taralea, but lability in fruit morphology during the diversification of the entire Dipterygeae clade. Despite Monopteryx and remaining Dipterygeae being florally discrepant, they are collectively defined by a floral synapomorphy that is unique among all papilionoid Fabaceae: the highly differentiated calyx, where the two upper lobes are enlarged and wing-like, whereas the other three lower lobes are reduced. We suggest that the different dispersal strategies and the ancient winged papilionate floral conservatism in Dipterygeae, which has maintained effective ecological interactions with specialized pollinators and ensured the protection of young flower buds and developing fruits, may explain successful evolutionary and ecological persistence of the clade across the main Neotropical biomes.
Development of a set of SNP markers for population genetics studies of Ipe (Handroanthus sp.), a valuable tree genus from Latin America
(Springer Science+Business Media, 2017) Barbara Rocha Venâncio Meyer-Sand; Céline Blanc-Jolivet; Malte Mäder; Kathelyn Paredes-Villanueva; Niklas Tysklind; Alexandre Magno Sebbenn; Erwan Guichoux; Бернд Деген
Development of nuclear and plastid SNP and INDEL markers for population genetic studies and timber traceability of Carapa species
(Springer Science+Business Media, 2019) Niklas Tysklind; Céline Blanc-Jolivet; Malte Mäder; Barbara Rocha Venâncio Meyer-Sand; Kathelyn Paredes-Villanueva; Eurídice N. Honorio Coronado; Carmen Rosa GARCÍA-DÁVILA; Alexandre Magno Sebbenn; Henri Caron; Valérie Troispoux
Development of nuclear and plastid SNP markers for genetic studies of Dipteryx tree species in Amazonia
(Springer Science+Business Media, 2019) Eurídice N. Honorio Coronado; Céline Blanc-Jolivet; Malte Mäder; Carmen Rosa GARCÍA-DÁVILA; Alexandre Magno Sebbenn; Barbara Rocha Venâncio Meyer-Sand; Kathelyn Paredes-Villanueva; Niklas Tysklind; Valérie Troispoux; Marie Massot
Nuclear and chloroplastic SNP markers for genetic studies of timber origin for Hymenaea trees
(Springer Science+Business Media, 2018) Camila Lucas Chaves; Céline Blanc-Jolivet; Alexandre Magno Sebbenn; Malte Mäder; Barbara Rocha Venâncio Meyer-Sand; Kathelyn Paredes-Villanueva; Eurídice N. Honorio Coronado; Carmen Rosa GARCÍA-DÁVILA; Niklas Tysklind; Valérie Troispoux
Nuclear and plastid SNP markers for tracing Cedrela timber in the tropics
(Springer Science+Business Media, 2019) Kathelyn Paredes-Villanueva; Céline Blanc-Jolivet; Malte Mäder; Eurídice N. Honorio Coronado; Carmen Rosa GARCÍA-DÁVILA; Alexandre Magno Sebbenn; Barbara Rocha Venâncio Meyer-Sand; Henri Caron; Niklas Tysklind; Stephen Cavers
Nuclear and plastidial SNP and INDEL markers for genetic tracking studies of Jacaranda copaia
(Springer Science+Business Media, 2019) Alexandre Magno Sebbenn; Céline Blanc-Jolivet; Malte Mäder; Barbara Rocha Venâncio Meyer-Sand; Kathelyn Paredes-Villanueva; Eurídice N. Honorio Coronado; Carmen Rosa GARCÍA-DÁVILA; Niklas Tysklind; Valérie Troispoux; Adline Delcamp
Timber tracking of Jacaranda copaia from Amazon Forest using DNA fingerprint
(2024) Alexandre Magno Sebbenn; Lorena Frigini Moro Capo; Бернд Деген; Céline Blanc-Jolivet; Malte Mäder; Stephen Cavers; Kathelyn Paredes-Villanueva; Eurídice Honorio-Conorado; Carmen Rosa GARCÍA-DÁVILA; Niklas Tysklind
Amazon tropical forest is actually subject to strong deforestation, generally originated from illegal logging, resulting in ecological, environmental and economic problems. Aiming stop deforestation and timber commercialization of illegal logging of tropical forest, new laws has been introduced in many countries. Here we investigated the utility of DNA fingerprinting of nuclear and cytoplasmatic SNPs to timber tracking the intensive logged and commercialized of the Amazonian Neotropical tree Jacaranda copaia. Samples of 832 individuals from 43 populations from Bolivia, Brazil, French Guiana, and Peru were used to investigate the power of 113 nuclear SNPs, 11 CpSNPs, and four MtSNP loci to determine the country and population origin. The genetic differentiation among all populations and contries was high (0.233&ndash;0.942), specialy for CpMtSNP (generally&gt;0.6) loci, and there is a strong isolation by distance pathern among populations, favoring the group or individual samples tracking to correct site. For self-assignment tests, we were able to 100% correct determine country and population origin of all samples using all SNPs. Our results show that the use of 128 SNP markers is suitable to correct determination of country and population site of J. copaia timber origin and very useful tool for customs and local and international policies.
Timber Tracking of Jacaranda copaia from the Amazon Forest Using DNA Fingerprinting
(Multidisciplinary Digital Publishing Institute, 2024) Lorena Frigini Moro Capo; Бернд Деген; Céline Blanc-Jolivet; Niklas Tysklind; Stephen Cavers; Malte Mäder; Barbara Rocha Venâncio Meyer-Sand; Kathelyn Paredes-Villanueva; Eurídice Nora Honorio Conorado; Carmen Rosa GARCÍA-DÁVILA
We investigated the utility of nuclear and cytoplasmic single nucleotide polymorphism (SNP) markers for timber tracking of the intensively logged and commercialized Amazonian tree Jacaranda copaia. Eight hundred and thirty-two trees were sampled (cambium or leaves) from 38 sampling sites in Bolivia, Brazil, French Guiana, and Peru. A total of 128 SNP markers (113 nuclear, 11 chloroplastic, and 4 mitochondrial) were used for genotyping the samples. Bayesian cluster analyses were carried out to group individuals into homogeneous genetic groups for tests to self-assign groups of individuals or individuals to their population of origin. Cluster analysis based on all the SNP markers detected seven main genetic groups. Genetic differentiation was high among populations (0.484) and among genetic groups (0.415), and populations showed a strong isolation-by-distance pattern. Self-assignment testing of the groups of individuals for all loci was able to determine the population origin of all the samples (accuracy = 100%). Self-assignment tests of individuals were able to assign the origin of 94.5%–100% of individuals (accuracy: 91.7%–100%). Our results show that the use of the 128 SNP markers is suitable to correctly determine the origin of J. copaia timber, and they should be considered a useful tool for customs and local and international police.