Uma nova espécie de Orthophytum Beer (Bromeliaceae) relacionada a Orthophytum navioides (L.B. Sm.) L.B. Sm

Louzada, Rafael Batista; Wanderley, Maria das Graças Lapa

doi:10.1590/s2236-89062008000300008

Cited by 3 publications

(3 citation statements)

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“…In addition to having a distinct evolutionary history (Givnish et al ., , ), these three lineages successfully occupy granitic and gneissic rock outcrops. Orthophytum , the most representative of the mat‐forming bromeliads, is made up of species growing on campos rupestres , on typical inselbergs in the Caatinga and on sugar loafs in the Atlantic Forest (Leme, ; Louzada & Wanderley, ). There are two centres of diversity for this genus, one in the Espinhaço range in Minas Gerais and Bahia, and one on sugar loafs in Espírito Santo and Minas Gerais, in the Atlantic Forest domain (Wanderley, ; Leme, ; Louzada & Wanderley, ; Martinelli et al ., ).…”

Section: Discussionmentioning

confidence: 99%

Sugar Loaf Landin south-eastern Brazil: a centre of diversity for mat-forming bromeliads on inselbergs

et al. 2016

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Inselbergs sensu lato are isolated, mainly granitic and gneissic, rock outcrops, forming old landscape elements on crystalline continental shields on all continents. Mats consisting mainly of monocots occur on open rocky slopes, forming a conspicuous habitat on these outcrops. Brazilian lowland inselbergs consist of species-rich mats with large numbers of endemics and Bromeliaceae standing out as characteristic elements in these communities. For the first time, we provide a checklist of mat-forming bromeliads on lowland inselbergs in Brazil and investigate whether the regional species pool influences the species diversity of inselberg mats. Furthermore, through modelling analysis, we looked for the potential distribution of bromeliads endemic to inselbergs, expecting that they would show a narrower niche width than non-endemic species. Our data indicate the existence of a particular phytogeographical region in the Atlantic Forest in south-eastern Brazil, comprising inselbergs harbouring a highly diverse flora of Bromeliaceae, which we call Sugar Loaf Land. In addition, our projections reveal smaller predicted areas for bromeliads endemic to inselbergs compared with non-endemic species, the former apparently being mainly controlled by climatic factors. In addition to climate and regional species pools, the island-like character of inselbergs seems to play an important role in the speciation of rupicolous Bromeliaceae.

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Section: Discussionmentioning

confidence: 99%

Sugar Loaf Landin south-eastern Brazil: a centre of diversity for mat-forming bromeliads on inselbergs

et al. 2016

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“…Although 2 n = 50 chromosomes are common within the Bromeliaceae, many Orthophytum species are polyploids (2 n = 100 and 150) ( Cotias-de-Oliveira et al, 2000 ; Louzada et al, 2010 ). Species of this genus generally inhabit granitic-gneiss inselbergs and quartzitic-sandstone outcrops in the Brazilian campos rupestres (“rocky fields”) along the Espinhaço Range ( Louzada and Wanderley, 2008 ). Such environments are spatially and ecologically isolated, providing a barrier against dispersal and migration, and they possess elevated species diversity and high levels of endemism ( Echternacht et al, 2011 ).…”

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“…Here, we report microsatellite loci isolation, characterization, and cross-amplification for O. ophiuroides Louzada & Wand., a species endemic to the Chapada Diamantina section of the Espinhaço Range in the state of Bahia, Brazil ( Louzada and Wanderley, 2008 ). The microsatellite loci reported here will be used to access levels of gene flow to resolve forces operating during species radiations on naturally isolated habitats.…”

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Microsatellite loci for Orthophytum ophiuroides (Bromelioideae, Bromeliaceae) species adapted to neotropical rock outcrops

Aoki-Gonçalves¹,

Louzada²,

Souza³

et al. 2014

Appl Plant Sci

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• Premise of the study: Microsatellite primers were developed for Orthophytum ophiuroides, a rupicolous bromeliad species endemic to neotropical rocky fields. These microsatellite loci will be used to investigate population differentiation and species cohesion in such fragmented environments. The loci were tested for cross-amplification in related bromeliad species.• Methods and Results: Eleven polymorphic microsatellite markers were isolated and characterized from an enriched library of O. ophiuroides. The loci were tested on 42 individuals from two populations of this species. The number of alleles per locus ranged from three to nine and the expected and observed heterozygosities ranged from 0.167 to 0.870 and from 0.369 to 0.958, respectively. Seven loci successfully amplified in other related bromeliad species.• Conclusions: Our results suggest that the microsatellite loci developed here will be useful to assess genetic diversity and gene flow in O. ophiuroides for the investigation of population differentiation and species cohesion in neotropical mountainous habitats.

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New species and a new combination of Brazilian Bromeliaceae

Leme¹,

Kollmann²

2011

Phytotaxa

1,023

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Uma nova espécie de Orthophytum Beer (Bromeliaceae) relacionada a Orthophytum navioides (L.B. Sm.) L.B. Sm

Cited by 3 publications

References 4 publications

Sugar Loaf Landin south-eastern Brazil: a centre of diversity for mat-forming bromeliads on inselbergs

Sugar Loaf Landin south-eastern Brazil: a centre of diversity for mat-forming bromeliads on inselbergs

Microsatellite loci for Orthophytum ophiuroides (Bromelioideae, Bromeliaceae) species adapted to neotropical rock outcrops

New species and a new combination of Brazilian Bromeliaceae

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