Microsatellite markers for Caesalpinia echinata Lam. (Brazilwood), a tree that named a country

Melo, Sônia Cristina Oliveira; Gaiotto, Fernanda Amato; Cupertino, Fernanda Barbosa; Corrêa, Ronan Xavier; Reis, Alessandra Maria Moreira; Grattapaglia, Dário; Brondani, R. P. V.

doi:10.1007/s10592-006-9274-y

Cited by 10 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…O pau-brasil vem sendo explorado extensivamente desde o início da colonização europeia e atualmente encontra-se ameaçado de extinção; sendo poucos os locais onde ainda possam ser encontradas populações nativas. Apesar de ser espécie relativamente bem estudada do ponto de vista de seus caracteres taxonômicos, fitoquímicos e de propagação (CORRÊA, 2003;REZENDE et al, 2004;AGUIAR et al, 2005;MELO et al, 2007), são poucos os estudos realizados sobre a ecofisiologia dessa espécie, particularmente em florestas nativas, utilizando-se plantas oriundas de regeneração natural (GEBLER et al, 2005). Tais estudos podem no futuro proporcionar subsídios para a compreensão dos aspectos relacionados à regeneração natural dessa espécie numa floresta semidecídua do Sul da Bahia.…”

Section: Introductionunclassified

Morfologia foliar de indivíduos jovens e adultos de Caesalpinia echinata Lam. numa floresta semidecídua do Sul da Bahia

et al. 2009

View full text Add to dashboard Cite

RESUMO -Caesalpinia echinata Lam. (Caesalpiniaceae) é uma espécie arbórea que ocorre naturalmente no interior da floresta e atinge os estratos superiores do dossel por meio de pequenas clareiras. Objetivou-se, neste estudo, comparar alguns aspectos da morfologia foliar entre indivíduos adultos, cujas folhas se encontravam em pleno sol e jovens no sub-bosque. O estudo foi realizado numa floresta semidecídua, localizada no Município de Jussari, Bahia. Inicialmente, foram localizados e marcados oito indivíduos adultos e oito jovens para cada adulto. Foram coletadas e analisadas oito folhas para cada adulto e três para cada jovem, em duas épocas (setembro/ novembro de 2004 e abril de 2005). Em geral, as áreas das folhas, das ráquis e dos folíolos, o comprimento das ráquis, a largura das folhas, o número de pinas e a massa seca das folhas foram significativamente superiores nos indivíduos jovens, ao passo que as massas específicas das folhas e dos folíolos foram significativamente superiores nos indivíduos adultos. Tanto nos adultos quanto nos jovens, nas duas épocas de coleta foram verificadas relações altamente significativas entre a massa seca e a área das folhas. Os resultados indicaram que folhas de C. echinata apresentam características que maximizam a absorção de luz onde este recurso é limitante e, ao mesmo tempo, direcionam maior alocação de carbono para os tecidos de suporte. Tais resultados estão de acordo com o observado no estádio sucessional da espécie analisada e com a sua estratégia de ocupação dos espaços gerados pela formação de pequenas clareiras, em ambiente de mata semidecídua.Palavras-chave: Área foliar, mata Atlântica e regeneração natural. LEAF MORPHOLOGY OF SAPLINGS AND ADULT INDIVIDUALS OF Caesalpinia echinata LAM. IN A SEMIDECIDUAL FOREST OF SOUTHERN BAHIA, BRAZIL

show abstract

Section: Introductionunclassified

Morfologia foliar de indivíduos jovens e adultos de Caesalpinia echinata Lam. numa floresta semidecídua do Sul da Bahia

et al. 2009

View full text Add to dashboard Cite

show abstract

“…The population structure and levels of inbreeding in P. echinata has been investigated by using samples collected in seven remnant populations. Study methods have used microsatellites, random ampli ed polymorphic DNA or ampli ed fragment length polymorphism (MA Cardoso et al 1998; SRS Cardoso et al 2005;Lira et al 2003;Melo et al 2007; Cupertino et al 2014), but none of them have actually examined the long-standing hypothesis that cryptic species or subspecies exist, a hypothesis suggested by the impressive variation in lea et size, varying from 0.9 cm to 12 cm in length (Lewis, 1998).…”

Section: Introductionmentioning

confidence: 99%

Combining phylogenomic and morphological data reveals new patterns of diversity in the national tree of Brasil, Paubrasilia echinata

Rees

Neaves

Lewis

et al. 2022

Preprint

View full text Add to dashboard Cite

Paubrasilia echinata (Lam.) Gagnon, H. C. Lima & G. P. Lewis (“Pau Brasil”) is the national tree of Brazil and an endangered species endemic to the Brazilian Atlantic Forest. The extensive range of distribution, spanning over 2000 km distance, is matched by extensive plasticity in leaf morphology. Three morphotypes are commonly identified based on the size of the leaflets but it is unclear if they represent distinct taxa or a single polymorphic species. This study aims to clarify the taxonomic position of the three morphotypes to inform conservation decisions. A comprehensive morphometric study based on herbarium specimens from the entire distribution range of the species was coupled with genetic analyses of population structure using genotype-by-sequencing data. We found that the three morphotypes do not match separately evolving lineages. Rather, P. echinata is composed of five genetic lineages that are geographically structured, although we did find evidence of genetic admixture in two individuals. Leaflet size varied by over 35-fold and although morphological clustering generally matched the genetic patterns, there were some overlaps, highlighting the cryptic diversity within this group. Finally, our genetic and morphological results provide some evidence that cultivated trees from different states in Brazil seem to be most closely related to a genetic lineage from northern Brazil, which suggests that more care is needed to protect and preserve the overall genomic diversity of this highly endangered and iconic species.

show abstract

“…Today, C. echinata is endangered (Varty, 1998). This species has a genetic diversity compatible with the existence of botanical varieties, subspecies, or complex of species (Juchum et al, 2008), but the few remaining natural populations are structured (Cardoso et al, 1998;Melo et al, 2007). Furthermore, there is still devastation of forest fragments where some of these populations live.…”

Section: Introductionmentioning

confidence: 99%

Karyomorphology and karyotype asymmetry in the South American Caesalpinia species (Leguminosae and Caesalpinioideae)

2014

View full text Add to dashboard Cite

ABSTRACT. With the purpose of addressing the pattern of karyotype evolution in Caesalpinia species, chromosome morphology was characterized in five species from Brazil, and karyotypic asymmetry was analyzed in 14 species from South America. All accessions had the chromosome number 2n = 24, which was first described here for Caesalpinia laxiflora Tul. and Cenostigma macrophyllum Tul. The karyotype formula of C. laxiflora, Caesalpinia pyramidalis Tul., and C. macrophyllum was 12 m. The formula varies amongst the populations of Caesalpinia bracteosa Tul. (11 m + 1 sm) and Caesalpinia echinata Lam. (10 m + 2 sm and 9 m + 3 sm). The intra-and interspecific variations in chromosome length were significant (analysis of variance, P < 0.05). Analyzing the asymmetry index (AI), revealed that Caesalpinia calycina Benth. had the most asymmetrical karyotype (AI = 10.52), whereas Caesalpinia paraguarienses (D. Parodi) Burkat. and Caesalpinia gilliesii (Hook.) Benth. had the most symmetrical karyotypes (AI = 0.91 and 1.10, respectively). There has been a trend to lower AI values for the Caesalpinia s.l. species assigned in Libidibia and intermediate values for those combined into Poincianella. On the 8279 ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 13 (4): 8278-8293 (2014) Karyomorphology and karyotype asymmetry in Caesalpinia other hand, the karyotypes of Erythrostemon species had extremely different AI values. This study confirms the existence of karyotype variability in Caesalpinia s.l. while revealing a possible uniformity of this trait in some of the new genera that are being divided from Caesalpinia s.l. More broadly, the 2n = 24 chromosome number is conserved. Metacentric chromosomes and low AI values predominate among Caesalpinia s.l. and Cenostigma.

show abstract

Microsatellite markers for Caesalpinia echinata Lam. (Brazilwood), a tree that named a country

Cited by 10 publications

References 4 publications

Morfologia foliar de indivíduos jovens e adultos de Caesalpinia echinata Lam. numa floresta semidecídua do Sul da Bahia

Morfologia foliar de indivíduos jovens e adultos de Caesalpinia echinata Lam. numa floresta semidecídua do Sul da Bahia

Combining phylogenomic and morphological data reveals new patterns of diversity in the national tree of Brasil, Paubrasilia echinata

Karyomorphology and karyotype asymmetry in the South American Caesalpinia species (Leguminosae and Caesalpinioideae)

Contact Info

Product

Resources

About