Genetic diversity and recruitment of the tropical palm, Euterpe edulis Mart., in a natural population from the Brazilian Atlantic Forest

Conte, Rudimar; Nodari, Rubens Onofre; Vencovsky, Roland; Reis, Maurício Sedrez dos

doi:10.1038/sj.hdy.6800347

Cited by 41 publications

(51 citation statements)

References 43 publications

(37 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The mortality rate of E. edulis in natural forests is considerably higher for seedlings, and decreases for plants over 50 cm in height (CONTE et al, 2003;GURIES, 2007). This is compatible with the species' reverse "J" population structure (CONTE et al, 2003); these authors found expressive mortality rates for plants less than 10 cm tall in natural regeneration dynamic studies.…”

Section: Introductionsupporting

confidence: 71%

“…This is compatible with the species' reverse "J" population structure (CONTE et al, 2003); these authors found expressive mortality rates for plants less than 10 cm tall in natural regeneration dynamic studies. They also found reduced mortality rates for plants between 11-50 cm tall, and a mortality rate of almost zero for individuals taller than 50 cm.…”

Section: Introductionsupporting

confidence: 66%

See 1 more Smart Citation

Water deficit responses of Euterpe edulis Martius seedlings at different growth stages

Oliveira¹,

Bertholdi²,

Engel³

et al. 2017

Sci. For.

View full text Add to dashboard Cite

ResumoMudas de Euterpe edulis de dois estádios de desenvolvimento (Classe A, 2 anos de idade, e Classe B, 4 anos de idade, com altura media de 16±1.3 e 49±3.3 cm, respectivamente), foram submetidas a três regimes de disponibilidade hídrica (déficit hídrico, reidratação e nova submissão ao déficit hídrico) em casa de vegetação. Avaliamos parâmetros fisiológicos e morfológicos para detectar diferenças nas respostas ao déficit hídrico. Plantas da classe B mostraram fechamento estomático mais rapidamente, 14 dias após início do regime (DAIR) em comparação às plantas da Classe A (que só responderam após 17 DAIR). No regime de reidratação, a Classe B alcançou valores de condutância estomática semelhantes ao controle mais rapidamente (14 DAIR) em comparação às plantas da classe A (25 DAIR). Quando submetidas novamente ao déficit hídrico, plantas da Classe B apresentaram condutância estomática duas vezes maior do que o controle, enquanto a Classe A apresentou valores cinco vezes inferiores ao controle. Este padrão de resposta deve-se às diferenças morfológicas entre os estádios de desenvolvimento, que refletem diferente comportamento hidrodinâmico. Além disso, a Classe B apresentou relação raíz/parte aérea sistema radicular mais balanceada (0.91±0.32) em comparação à Classe A, que apresentou apenas 0.51±0.17. Concluímos que plantas em estádio de desenvolvimento superior são mais tolerantes a ciclos de déficit hídrico recorrentes. Os resultaram apontam para o potencial de promover a rustificação de plantas de Euterpe edulis em viveiro.Palavras-chave: palmeira-juçara, estádios de desenvolvimento, déficit hídrico, reidratação, respostas ecofisiológicas e morfológicas. AbstractEuterpe edulis plants at two developmental stages (Class A, two-year-old seedlings, and Class B, fouryear-old-saplings, with a mean height of 16.0±1.3 and 49.0±3.3 cm, respectively), were subjected to three successive water availability regimes (water deficit, re-watering and subsequent water deficit after rewatering) in greenhouse conditions. We assessed physiological and morphological parameters to detect differences in the water deficit response. Saplings showed a more rapid stomata closure 14 days after the beginning of the regime (DABR) than seedlings (which only showed a response after 17 DABR). Furthermore, the stomata conductance of saplings subjected to the re-watering regime reached the same value as the controls faster (14 DABR) than that of seedlings (25 DABR). When again subjected to water deficit, saplings showed a two-fold higher stomata conductance than the control plants, whereas seedlings showed a five-fold lower value. This response pattern can be attributed to morphological differences between the developmental stages, which is reflected in different hydrodynamic behaviors. Saplings showed a more balanced root/aerial shoot ratio (0.91±0.32), whereas the ratio for seedlings was 0.51±0.17. We conclude that more developed plants are more tolerant to recurrent cycles of water deficit. The results suggest the potential to harden "jussar...

show abstract

Section: Introductionsupporting

confidence: 71%

Section: Introductionsupporting

confidence: 66%

Water deficit responses of Euterpe edulis Martius seedlings at different growth stages

Oliveira¹,

Bertholdi²,

Engel³

et al. 2017

Sci. For.

View full text Add to dashboard Cite

show abstract

“…Furthermore, Brandão et al (2011) used 10 ISSR primers to identify the genetic distribution of Myrcia splendens (SW.) DC in a fragment-corridor system in southeastern Brazil. They found positive kinship values in two vegetation corridors, at distances of 20 and 70 m. Several authors have suggested that genetic structuring between the life stages might be common among the tropical tree species (Conte et al, 2003;Seoane et al, 2005;Vieira et al, 2012). A possible explanation for SGS being found in the first distance class for C. prunifera is its restricted seed dispersal, where large number of fruits fall near the mother plant.…”

Section: Discussionmentioning

confidence: 99%

“…Using allozyme markers, Conte et al (2003) observed no significant differences in the genetic diversity (Nei index) between the seedlings, juveniles, and adults of Euterpe edulis Mart. They attributed the similarity in genetic diversity to the large number of adult individuals in the population, which might compensate for the variability that is naturally lost through genetic drift.…”

Section: Discussionmentioning

confidence: 99%

Increased relatedness among the neighboring plants from seedling to adult stages in carnaúba wax palm

et al. 2016

View full text Add to dashboard Cite

ABSTRACT. The objective of this study was to assess the spatial genetic structure (SGS) at different life stages (cohorts) in a remnant population (N = 101) of Copernicia prunifera in the semiarid region of northeastern Brazil. Using seven inter-simple sequence repeat molecular markers, we were able to analyze 93 loci with 100% polymorphism. Seedlings had the highest level of genetic diversity (H E = 0.411, H O = 0.599), followed by juveniles (H E = 0.394, H O = 0.579) and adults (H E = 0.267, H O = 0.427). Based on analysis of molecular variance, the majority of genetic variations were observed to occur within the life stages (93.42%) rather than between the life stages (6.58%). We found a recent reduction in the population size (bottleneck) based on the number of loci with heterozygosity excess for the two models used (infinite allele = 92 and stepwise = 91). All the life stages showed significant SGS, with positive and significant kinship values. Sp values were 0.040 for seedlings, 0.093 for juveniles, 0.156 for adults, and 0.053 for the total population. We found an increase in SGS from the seedling to adult stages, indicating that the plants were from related adult progenitors. Data from this study can be used in designing effective management and conservation strategies for the species.

show abstract

“…Tal análise permitiria inferir se possíveis variações nas frequências alélicas, e nos demais índices de diversidade genética, entre indivíduos de distintas idades suportam (ou não) a hipótese de seleção em favor de heterozigotos. Estudo semelhante já foi conduzido com Euterpe edulis (Conte et al, 2003).…”

Section: Análises Estatísticasunclassified

Diversidade e estrutura genética de populações de Varronia curassavica Jacq. em restingas da Ilha de Santa Catarina

Hoeltgebaum

Bernardi

Montagna

et al. 2015

Rev. bras. plantas med.

View full text Add to dashboard Cite

RESUMO:Varronia curassavica Jacq. (Boraginaceae) está presente na vegetação de restinga e apresenta relevantes propriedades medicinais. A espécie é explorada especialmente por comunidades locais e pela indústria farmacêutica, porém, carece de informações ecológicas e genéticas a seu respeito. Nesse contexto, o estudo foi conduzido com o objetivo de caracterizar a diversidade genética de três populações de V. curassavica em áreas de restinga na Ilha de Santa Catarina. Foram coletadas folhas de 50 indivíduos adultos em cada uma das três áreas de estudo e as frequências alélicas das populações foram obtidas a partir de 14 locos alozímicos. Foram encontrados 25 alelos distintos nas três populações, sendo dois alelos exclusivos. As populações apresentaram diversidade genética média de 0,111 e índice de fixação médio de -0,060 (-0,273 até 0,222). Os níveis de diversidade são intermediários, semelhantes aos exibidos por espécies da mesma família ou de características ecológicas semelhantes. Os índices de fixação foram todos significativos e discrepantes entre as populações, sendo que duas delas apresentaram excesso de heterozigotos. A divergência genética interpopulacional foi significativa e igual a 0,079, considerada moderada e sugerindo efeitos de subdivisão populacional. Os níveis de diversidade genética encontrados e a redução populacional causada pela redução e fragmentação dos habitats em que a espécie ocorre sugerem medidas de conservação ex situ e demandam maior rigor na proteção legal de áreas de proteção permanente.Palavras-chave: conservação, erva-baleeira, espécie medicinal, tamanho efetivo.ABSTRACT: Genetic diversity and structure of Varronia curassavica Jacq. populations in the restinga of Santa Catarina Island. The Varronia curassavica Jacq. (Boraginaceae) is present in restinga vegetation and shows relevant medicinal properties. The species is exploited by local communities and by the pharmaceutical industry; however, it lacks ecological and genetic information. Thus, this study aimed to characterize the genetic diversity of three V. curassavica populations in restinga areas of Santa Catarina Island. Leaves of 50 adult individuals were sampled in each of the three study areas and the allelic frequencies were obtained from 14 allozyme loci. Twenty-five different alleles were found in the three populations, two of them being exclusive. The populations showed, on average, a genetic diversity of 0,111 and a fixation index of -0,060 (-0,273 to 0,222). The diversity levels are intermediary, similar to those ones owned by species of the same family or with similar ecological traits. The fixation indexes were all significant and discrepant among the populations, with two of them showing excess of heterozygotes. The genetic divergence among populations was significant and equal to 0,079, which is considered moderate and suggests effects of population subdivision. The levels of genetic diversity found and the population decrease caused by reduction and fragmentation of habitats in which the species are present i...

show abstract

Genetic diversity and recruitment of the tropical palm, Euterpe edulis Mart., in a natural population from the Brazilian Atlantic Forest

Cited by 41 publications

References 43 publications

Water deficit responses of Euterpe edulis Martius seedlings at different growth stages

Water deficit responses of Euterpe edulis Martius seedlings at different growth stages

Increased relatedness among the neighboring plants from seedling to adult stages in carnaúba wax palm

Diversidade e estrutura genética de populações de Varronia curassavica Jacq. em restingas da Ilha de Santa Catarina

Contact Info

Product

Resources

About