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  1. Article: Taxonomy of Cryptic Isoëtes Species from the Brazilian Semi-Arid Region, with a Note about the Putative Maternal Origin of Polyploids

    Pereira, Jovani B. S. / Prado, Jefferson

    American fern journal. 2022 Aug. 19, v. 112, no. 3

    2022  

    Abstract: Revealing the unrecognized diversity within cryptic species has profound implications in the taxonomy, systematics, evolutionary studies, and species protections throughout plant groups. Isoëtes is prone to a high rate of cryptic speciation because of ... ...

    Abstract Revealing the unrecognized diversity within cryptic species has profound implications in the taxonomy, systematics, evolutionary studies, and species protections throughout plant groups. Isoëtes is prone to a high rate of cryptic speciation because of its morphological simplicity, stasis, and convergence. Phylogenetic studies revealed cryptic species in the genus from the Brazilian semi-arid region (the Caatinga), which comprises the least studied and most endangered flora in Brazil. Here we conducted morphological analyses and chromosome counts, and took advantage of phylogenetic analyses already published for the genus to provide a taxonomic revision of Isoëtes from the Caatinga. Isoëtes anamariae and I. harleyi are two new species, which were revealed by molecular data and subtle morphological characters. This study provides descriptions, chromosome counts, illustrations of the most important morpho-taxonomic characters of species from the Caatinga, and a key to identify them. All species from this region are diploid and we show the importance of diploids in detangling the origin of polyploids in Brazil.
    Keywords caatinga ; chromosomes ; cryptic speciation ; cryptic species ; diploidy ; ferns and fern allies ; flora ; new species ; phylogeny ; polyploidy ; semiarid zones ; taxonomic revisions ; Brazil
    Language English
    Dates of publication 2022-0819
    Size p. 190-206.
    Publishing place American Fern Society
    Document type Article
    ZDB-ID 2175903-0
    ISSN 1938-422X ; 0002-8444
    ISSN (online) 1938-422X
    ISSN 0002-8444
    DOI 10.1640/0002-8444-112.3.190
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Two New Endemic Tetraploid Species of the Genus Isoëtes from the Brazilian Savanna

    Pereira, Jovani B. S. / Prado, Jefferson

    Systematic botany. 2022 June 14, v. 47, no. 2

    2022  

    Abstract: Isoëtes cipoensis and I. longifolia, two new endemic tetraploids from the Cerrado (Brazilian savanna), are described, illustrated, and compared to their similar species. Isoëtes cipoensis can be distinguished by a set of characters such as flaccid, ... ...

    Abstract Isoëtes cipoensis and I. longifolia, two new endemic tetraploids from the Cerrado (Brazilian savanna), are described, illustrated, and compared to their similar species. Isoëtes cipoensis can be distinguished by a set of characters such as flaccid, straight, and erect leaves, deltate labia, presence of conspicuous sclerified phyllopodia, baculate megaspores with frequent long spine-like macroelements, and distally echinate microspores. Isoëtes longifolia is characterized by having a fully submerged habitat in the river, flaccid, long leaves (70–100 cm long), oblong labia, uniformly baculate megaspores, and densely echinate microspores. Importantly, chloroplast genomes already published for the species further support their phylogenetic distinctness in comparison to other species from the tropical region in Brazil. This study provides a key and distribution map for the species from the Brazilian savanna and scanning electron microscopy images of the mega- and microspores for the new species. These species are only known from their type location. We suggest I. cipoensis and I. longifolia should be classified as Data Deficient (DD) and Endangered (EN) species, respectively, based on the IUCN criteria.
    Keywords cerrado ; chloroplast genome ; habitats ; megaspores ; new species ; phylogeny ; rivers ; savannas ; tetraploidy ; tropics ; Brazil
    Language English
    Dates of publication 2022-0614
    Size p. 301-305.
    Publishing place American Society of Plant Toxonomists
    Document type Article
    ZDB-ID 2052625-8
    ISSN 1548-2324 ; 0363-6445
    ISSN (online) 1548-2324
    ISSN 0363-6445
    DOI 10.1600/036364422X16512564801704
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  3. Article: Novelties in the Anemia elegans Clade (Anemiaceae), with a New Species and Nothospecies from Brazil

    Pereira, Jovani B. S. / Nunes, Maurício G. / Labiak, Paulo H.

    Systematic botany. 2022 Sept. 16, v. 47, no. 3

    2022  

    Abstract: Anemia is one of the most diverse genera in Brazil, with about 60 species. Unlike many other ferns, species of Anemia are abundant in dry and rocky environments, with many of them being narrow endemics to the mountains of the Central Brazilian Cerrado. ... ...

    Abstract Anemia is one of the most diverse genera in Brazil, with about 60 species. Unlike many other ferns, species of Anemia are abundant in dry and rocky environments, with many of them being narrow endemics to the mountains of the Central Brazilian Cerrado. Besides its richness, several species of Anemia hybridize, and hybrids and polyploids are fairly common in the genus. During a field trip to the northernmost distribution of the Cerrado, we found an undescribed species that we describe herein – Anemia areniticola. We also describe a new hybrid, Anemia ×pirenopolitana, between two species in the Anemia elegans clade, which is the first record of a hybrid in this clade. We provide morphological descriptions and illustrations, and distribution maps for the new taxa, as well as comparisons with the most similar species. A key is also provided for the species in the Anemia elegans clade.
    Keywords Anemiaceae ; botany ; cerrado ; hybrids ; new species ; polyploidy ; Brazil
    Language English
    Dates of publication 2022-0916
    Size p. 840-845.
    Publishing place American Society of Plant Toxonomists
    Document type Article
    ZDB-ID 2052625-8
    ISSN 1548-2324 ; 0363-6445
    ISSN (online) 1548-2324
    ISSN 0363-6445
    DOI 10.1600/036364422X16573019348364
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  4. Article: The southernmost distribution range of Isoetes panamensis Maxon & C.V. Morton (Lycopodiopsida, Isoetaceae) in the relicts of the Cerrado in southern Brazil

    Pereira, Jovani B. S. / Brotto, Marcelo / Labiak, Paulo H.

    Check list. 2021 Jan. 12, v. 17, no. 1

    2021  

    Abstract: Establishing the geographical distribution limits of species may provide not only data to understand their range of adaptation to conservation proposals but also records of the dynamics in the vegetation across the time. Here we report the southernmost ... ...

    Abstract Establishing the geographical distribution limits of species may provide not only data to understand their range of adaptation to conservation proposals but also records of the dynamics in the vegetation across the time. Here we report the southernmost limit of the occurrence of Isoetes panamensis Maxon & C.V. Morton within a relict of the Cerrado in Paraná, Brazil. This find highlights the importance of fieldwork in relicts of the Cerrado to enhance the knowledge about the flora of Paraná and the vegetational dynamic of the Cerrado in the past.
    Keywords Isoetes ; cerrado ; flora ; geographical distribution ; Brazil
    Language English
    Dates of publication 2021-0112
    Size p. 63-67.
    Publishing place Pensoft Publishers
    Document type Article
    ZDB-ID 2252867-2
    ISSN 1809-127X
    ISSN 1809-127X
    DOI 10.15560/17.1.63
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  5. Article: WITHDRAWN: Rediscovering two Isoetes species in the Brazilian Amazon and Cerrado after ca 167 and 175 years, respectively

    Pereira, Jovani B.S / Giulietti, Ana Maria / Pott, Vali J / Watanabe, Maurício T.C

    Aquatic botany. 2020,

    2020  

    Abstract: This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause.The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/ ... ...

    Abstract This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause.The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal
    Keywords Isoetes ; cerrado ; Amazonia ; Brazil
    Language English
    Publishing place Elsevier B.V.
    Document type Article
    Note Pre-press version
    ZDB-ID 390388-6
    ISSN 0304-3770
    ISSN 0304-3770
    DOI 10.1016/j.aquabot.2020.103212
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    In stock of ZB MED Bonn / Germany

    Z 77/712: Show issues

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  6. Article: Isoetesnana, a new species from the coastal mountains of southeastern Brazil

    Pereira, Jovani B. S / Stützel, Thomas / Schulz, Christian

    PhytoKeys. 2017 Nov. 3, v. 89

    2017  

    Abstract: Isoetesnana, a new species from the coastal mountains of southeastern Brazil (Serra de Itatiaia), is described, illustrated and compared to similar species. This species can be distinguished from similar species by a set of characters that include 5–15 ... ...

    Abstract Isoetesnana, a new species from the coastal mountains of southeastern Brazil (Serra de Itatiaia), is described, illustrated and compared to similar species. This species can be distinguished from similar species by a set of characters that include 5–15 small erect leaves reaching only up to 3.5cm long, megaspores rugulate (rarely laevigate or obscurely cristate) and microspores sparsely echinate. We include a key to identify this new species and spore images for all species that are discussed in this study. Isoetesnana is known only from the type locality, where it was reported to occur in small ponds on rocky outcrops at high elevations. We suggest it should be classified as a data deficient species based on the IUCN criteria.
    Keywords Isoetes ; altitude ; data deficient species ; leaves ; megaspores ; microspores ; mountains ; new species ; plant taxonomy ; ponds ; scientific illustration ; spores ; taxon descriptions ; taxonomic keys ; Brazil
    Language English
    Dates of publication 2017-1103
    Size p. 91-105.
    Publishing place Pensoft Publishers
    Document type Article
    ZDB-ID 2579891-1
    ISSN 1314-2003 ; 1314-2011
    ISSN (online) 1314-2003
    ISSN 1314-2011
    DOI 10.3897/phytokeys.89.20171
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  7. Article: Isoetes nana

    Pereira, Jovani B S / Stützel, Thomas / Schulz, Christian

    PhytoKeys

    2017  , Issue 89, Page(s) 91–105

    Abstract: ... Isoetes ... ...

    Abstract Isoetes nana
    Language English
    Publishing date 2017-11-03
    Publishing country Bulgaria
    Document type Journal Article
    ZDB-ID 2579891-1
    ISSN 1314-2003 ; 1314-2011
    ISSN (online) 1314-2003
    ISSN 1314-2011
    DOI 10.3897/phytokeys.89.20171
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  8. Article: Rediscovering two Isoetes species in the Brazilian Amazon and Cerrado after 167 years

    Pereira, Jovani B. S / Giulietti, Ana Maria / Pott, Vali J / Watanabe, Maurício T. C

    PhytoKeys. 2019 Dec. 05, v. 135

    2019  

    Abstract: Isoetesamazonica and I.gardneriana were the first two species of the genus to be collected from Brazil. Isoetesamazonica was gathered by Richard Spruce in the Amazon basin near Santarém in the state of Pará in 1850. Isoetesgardneriana was collected by ... ...

    Abstract Isoetesamazonica and I.gardneriana were the first two species of the genus to be collected from Brazil. Isoetesamazonica was gathered by Richard Spruce in the Amazon basin near Santarém in the state of Pará in 1850. Isoetesgardneriana was collected by George Gardner in the current Dianópolis in Tocantins State in 1843. Despite being known for a long time by botanists, these species have not been recollected since then, which raised questions about their taxonomic recognition, current distribution ranges and conservation status. Fieldwork efforts led to the rediscovery of I.amazonica and I.gardneriana after 167 years. These collections enrich our understanding of their habitats and morphologies. We provide here re-descriptions for these species. Based on IUCN criteria, Isoetesamazonica and I.gardneriana should be assigned as data deficient (DD) and endangered (EN), respectively. The rediscovery of these species raises hopes that other areas in Amazon and Cerrado biomes harbour I.amazonica and I.gardneriana, respectively. This study will serve as a basis towards the conservation of these species.
    Keywords Isoetes ; Picea ; basins ; cerrado ; conservation status ; ecosystems ; habitats ; plant taxonomy ; Amazonia ; Brazil
    Language English
    Dates of publication 2019-1205
    Size p. 105-117.
    Publishing place Pensoft Publishers
    Document type Article
    ZDB-ID 2579891-1
    ISSN 1314-2003 ; 1314-2011
    ISSN (online) 1314-2003
    ISSN 1314-2011
    DOI 10.3897/phytokeys.135.46624
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  9. Article: Chloroplast genomes of key species shed light on the evolution of the ancient genus Isoetes

    Pereira, Jovani B. S / Giulietti, Ana Maria / Pires, Eder S / Laux, Marcele / Watanabe, Maurício T. C / Oliveira, Renato R. M / Vasconcelos, Santelmo / Oliveira, Guilherme

    Journal of systematics and evolution. 2021 May, v. 59, no. 3

    2021  

    Abstract: Although phylogenetic studies have revealed major clades, the deepest relationships in Isoetes remain unresolved. The use of next‐generation sequencing provides enormous amounts of gene sequences, which allows not only clarification of the basal ... ...

    Abstract Although phylogenetic studies have revealed major clades, the deepest relationships in Isoetes remain unresolved. The use of next‐generation sequencing provides enormous amounts of gene sequences, which allows not only clarification of the basal relationships but also rapid radiations. Plastomes of six key Isoetes species were annotated, revealing a total of 129 or 130 genes, depending on the species. Our phylogenomic analyses comprising representatives of all major clades yielded well‐supported nodes and identical topologies using maximum likelihood and Bayesian inference. The phylogenetic reconstructions detangled the deep relationships in Isoetes and illuminated the more recent radiations in the genus. A basal dichotomy was found that grouped Isoetes spp. from Brazil and South Africa into a clade sister to the remaining Isoetes groups. Interestingly, I. andicola was found to be sister to the North American species complex. Genomic trait mapping analysis showed that the missing introns in the atpF and clpP genes were well conserved in two major clades. The absence of trnK‐UUU was observed in the Brazilian tropical species and in I. velata. Among lycophytes, the gene trnR‐CCG was missing only in I. eludens. In general, genomic traits such as the presence or absence of internal stop codons, a tRNA, and an intron were revealed to be conserved within groups, suggesting that these genomic traits might reveal vital information about the evolution of the genus. This study will contribute to understanding the diversification of Isoetes and the establishment of a better framework to address the evolutionary history of the genus.
    Keywords Bayesian theory ; Isoetes ; chloroplast genome ; genomics ; introns ; phylogeny ; statistical analysis ; stop codon ; Brazil ; South Africa
    Language English
    Dates of publication 2021-05
    Size p. 429-441.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note NAL-AP-2-clean ; JOURNAL ARTICLE
    ZDB-ID 2516638-4
    ISSN 1759-6831 ; 1674-4918
    ISSN (online) 1759-6831
    ISSN 1674-4918
    DOI 10.1111/jse.12693
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  10. Article: Rediscovering two

    Pereira, Jovani B S / Giulietti, Ana Maria / Pott, Vali J / Watanabe, Maurício T C

    PhytoKeys

    2019  Volume 135, Page(s) 105–117

    Abstract: ... Isoetes ... ...

    Abstract Isoetes amazonica
    Language English
    Publishing date 2019-12-05
    Publishing country Bulgaria
    Document type Journal Article
    ZDB-ID 2579891-1
    ISSN 1314-2003 ; 1314-2011
    ISSN (online) 1314-2003
    ISSN 1314-2011
    DOI 10.3897/phytokeys.135.46624
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