Ex Situ Conservation of Cactaceae in the Brazilian Semiarid: Cactarium Guimarães Duque

Cavalcante, Arnóbio de Mendonça Barreto; Gomes, Vanessa Gabrielle Nóbrega; Vasconcelos, Gabriella Carla Leite de; Meiado, Marcos Vinícius

doi:10.2985/015.089.0105

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…high radiation, low relative humidity and cloudiness). The average annual rainfall is about 800 mm, irregularly distributed throughout the year, with high average annual temperature (27 ºC) (Cavalcante et al 2017). The Cactarium is affiliated with the Biodiversity department and was created in September 2014.…”

Section: Methodsmentioning

confidence: 99%

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Ex Situ Conservation in the Brazilian Semiarid: Cactaceae Housed in the Collection of the Guimarães Duque Cactarium

Gomes

Cassimiro

Freitas

et al. 2020

BJD

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Nearly 1/3 of all cacti species in the world are at risk of extinction because of human impacts. In Brazil, Cactaceae is among the 10 most endangered families of national flora, making conservation measures essential for this family. In this paper, we document the species preserved in the ex situ collection at the Guimarães Duque Cactarium (CAGD) located in the National Institute of Semiarid, Paraíba state, Brazil. The collection consists of 158 species and 1013 specimens, including mostly Cactaceae and succulent representatives of eight other botanical families. The cacti collection covers 952 specimens belonging to 123 species and 36 genera. Of this total, 104 species are native to Brazil and 19 are exotic species from nine countries. The CAGD collection includes representatives from several phytogeographic domains of the country, highlighting endemic and threatened cacti species occurring in the Caatinga. 70% (N = 83) of the cacti species recorded in the Brazilian Semiarid region are represented in the CAGD collection. Furthermore, in the collection, there are cacti species classified with different threat categories (Near threatened, Vulnerable, Endangered and Critically endangered), with 21 species classified according to MMA/2014 list and 35 species according to

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Section: Methodsmentioning

confidence: 99%

“…Its structure occupies an area of 300m² including greenhouses, stands and external gardens. An overview of the cactarium structure and a brief history can be found in Cavalcante et al (2017) and Batista et al (2018). Currently, the cactarium is composed of a permanent exposure structure open to the public (Fig.…”

Section: Methodsmentioning

confidence: 99%

Ex Situ Conservation in the Brazilian Semiarid: Cactaceae Housed in the Collection of the Guimarães Duque Cactarium

Gomes

Cassimiro

Freitas

et al. 2020

BJD

Self Cite

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“…Furthermore, it is important to create complementary initiatives, such as ex situ conservation (MMA 1992), considering their viability and simplicity to maintain a species (Cohen et al 1991). Some studies have already been carried out for endangered species of cacti examining conservation initiatives such as micropropagation in vitro (Marchi 2016;Palacios et al 2016;Civatti et al 2017a;Torres-Silva et al 2018), living collections (Hultine et al 2016;Cavalcante et al 2017) and seed storage (Civatti et al 2015;Nascimento & Meiado 2016;Santos et al 2018); these works are crucial to facilitate future studies and to protect the species from extinction.…”

Section: Conservation Of D Zehntneri Subsp Petr-halfarimentioning

confidence: 99%

Genetic evidence of multiple reproductive strategies in a microendemic and threatened cactus (Cactaceae: Discocactus Pfeiff) in Bahia, Brazil

et al. 2019

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Discocactus zehntneri subsp. petr-halfari, an endangered taxon, is represented by a single population in an anthropized area of Bahia, Brazil, where it is suffering due to extreme extractivism. Thus, information about this cactus, such as its reproductive patterns, is urgently needed to support conservation strategies. A population genetics approach was used to determine if this subspecies has a preferential pattern of reproduction. We sampled 18 individuals, both with and without connection to parental plants, from five clumps and assessed their diversity and genetic structure using five ISSR markers. The results revealed two clumps that are genetically supported by the presence of genetically equal individuals. The other three groups presented individuals that are genetically different and similar to individuals in other clumps. These findings suggest that this subspecies has sexual and clonal reproduction and that its environmental distribution might be shaped by events of dispersion. In addition, a possible hybrid origin may explain its rates of genetic diversity. Despite all these factors, this taxon is in danger and so the development of conservation strategies to preserve its population are urgently needed, including in situ and ex situ actions such as the micropropagation in vitro, living collections and cryopreservation.

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Morphological and molecular divergence in ornamental variants of cactus which may be useful to generate new variants

Neves

Mangolin

Fernandes

et al. 2022

Plant Genet. Resour.

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Although morphological plasticity has been widely known in various cactus genera, few studies have investigated the origin and molecular relationship between morphological variants from cacti. Morphological variants are relevant specimens because atypical, exotic and generally unique forms are preferred by cactus traders and collectors. The current study investigates the molecular relationship between the tortuosus and monstruosus ornamental variants of Cereus peruvianus used in landscapes. Polymorphisms in loci of simple-sequence repeats in DNA were used as molecular markers. The variants tortuosus and monstruosus, and plants with typically columnar and erect shoots cultivated in southern Brazil were retrieved from public parks and home gardens. High polymorphism, an indicative of vegetative propagation, and a moderate genetic divergence were detected at the molecular level in monstruosus and tortuosus plants. Artificial selection and vegetative propagation of the ornamental variants of Cereus may be inducing a moderate genetic divergence and formation of two heterologous groups with conservative genetic diversity. Polymorphism in Cereus variants revealed groups with contrasting genes among the variants tortuosus and monstruosus which may be useful for breeding to generate new and different new variants.

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Ex Situ Conservation of Cactaceae in the Brazilian Semiarid: Cactarium Guimarães Duque

Cited by 5 publications

References 7 publications

Ex Situ Conservation in the Brazilian Semiarid: Cactaceae Housed in the Collection of the Guimarães Duque Cactarium

Ex Situ Conservation in the Brazilian Semiarid: Cactaceae Housed in the Collection of the Guimarães Duque Cactarium

Genetic evidence of multiple reproductive strategies in a microendemic and threatened cactus (Cactaceae: Discocactus Pfeiff) in Bahia, Brazil

Morphological and molecular divergence in ornamental variants of cactus which may be useful to generate new variants

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