Conceptos taxonómicos, fenología y epifitismo: el caso de Ceratozamia tenuis (Zamiaceae)

Martínez‐Domínguez, Lilí; Nicolalde‐Morejón, Fernando; Stevenson, Dennis; Santiago-Jiménez, Quiyari J.

doi:10.22201/ib.20078706e.2018.2.2357

Cited by 13 publications

(21 citation statements)

References 27 publications

(36 reference statements)

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“…We demonstrated a high degree of synchrony between polliniferous and ovuliferous plants and a potential association with rainfall patterns in the highly seasonally dry Cerrado woodlands. These results corroborate other studies related to the phenology and population structure of cycads (e.g., Clark & Clark, 1987, 1988Clugston et al, 2016;Griffith et al, 2012;Grobbelaar et al, 1989;Lopez-Gallego & O'Neil, 2010;Martínez-Domínguez et al, 2018;Negr on-Ortiz & Breckon, 1989;Ornduff, 1987;Ornduff, 1992;Pérez-Farrera & Vovides, 2004) and additionally confirm that the timing of reproduction closely follows local climatic patterns as observed for other plant species (Marcelo et al, 2021). The emergence of reproductive structures occurred during the dry season, with the ovuliferous strobili development continuing well beyond the end of the polliniferous strobili lifespan, as expected.…”

Section: Strobili Biology: Morphology Lifespan and Growth Dynamicssupporting

confidence: 91%

Phenology of Zamia boliviana (Zamiaceae), a threatened species from a seasonally dry biodiversity hotspot in South America

Segalla

Pinheiro

Barônio

et al. 2021

Plant Species Biology

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Dioecy, a character common to all cycads, requires obligatory outcrossing. The absence of potential reproductive mates of the opposite sex renders individuals effectively sterile. Therefore, reproductive synchrony is essential for the reproductive success of cycads. Here, we describe the reproductive phenology, morphology, and lifespan of strobili of Zamia boliviana (Cycadales, Zamiaceae), an endemic

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Section: Strobili Biology: Morphology Lifespan and Growth Dynamicssupporting

confidence: 91%

Phenology of Zamia boliviana (Zamiaceae), a threatened species from a seasonally dry biodiversity hotspot in South America

Segalla

Pinheiro

Barônio

et al. 2021

Plant Species Biology

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“…In contrast, duration of ovulate strobili exhibits high specificity in the receptivity phase, which suggests that these data are taxonomically informative. Our findings on the length of the lifespan of reproductive structures and phenological phases coincide with our previous observations in C. tenuis (Martínez-Domínguez et al 2018b). Ceratozamia leptoceras has a different phenological pattern for ovulate strobili compared to its morphologically similar congeners, which perhaps represents a reproductive barrier in the field (Fig.…”

Section: Discussionsupporting

confidence: 91%

“…In addition, we investigated the potential value of phenological reproductive patterns for species delimitation; this type of ecological information has been scarcely studied in cycads (Stevenson 1981;Clugston et al 2016) or in integrative taxonomy studies of gymnosperms. Considering the different male plants in a population, the phenology of pollen strobili shows a broader cycle at the population level; the lifespan of a pollen strobilus is shorter than for ovulate strobili, and an open pollen phase is prolonged in different individual plants (Martínez-Domínguez et al 2018b). In contrast, duration of ovulate strobili exhibits high specificity in the receptivity phase, which suggests that these data are taxonomically informative.…”

Section: Discussionmentioning

confidence: 98%

A novelty in Ceratozamia (Zamiaceae, Cycadales) from the Sierra Madre del Sur, Mexico: biogeographic and morphological patterns, DNA barcoding and phenology

Martínez‐Domínguez¹,

Nicolalde‐Morejón²,

Lorea-Hernández³

et al. 2020

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Ceratozamia is a genus of cycads occurring in eastern Mexico and Central America. In this study, we describe a new species from the Pacific region of Mexico in Guerrero state. This locality represents the most northwestern Mexico distribution for the genus. We focus the comparison of this species with the most geographically proximate and phenotypically relevant lineages for this taxon. We followed an integrative taxonomy approach to evaluate the classification of these species, including geographic location, morphology, DNA barcoding and phenology as primary sources of systematic data. Within the morphological dataset, reproductive structures are described in detail and new characters are proposed for microsporophylls. The comparative morphology of these structures facilitated the elucidation of differences in forms and species for identification. The two chosen DNA barcoding markers – namely, the chloroplast genome coding region matK and the nuclear ribosomal internal transcribed spacer (ITS) region – had low divergence, allowing only 61% of species identification, suggesting slow molecular evolutionary rates. Besides employing these three basic sources of evidence, we introduced phenology as additional information for species circumscription. In addition, this work includes a brief review of the genus at the species-level. This is therefore the most recent review for Ceratozamia across its full geographic range (latitudinal and elevational). Overall, this work further contributes to a comprehensive framework for systematic studies in Mexican cycads.

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“…The records were carried out once a month during September and October 2020, February to May 2021. All observations were categorized according to Martínez‐Domínguez et al (2018b).…”

Section: Methodsmentioning

confidence: 99%

A new Mexican Ceratozamia (Zamiaceae) species with notes on reproductive phenology

Martínez‐Domínguez

Nicolalde‐Morejón

Vergara‐Silva

et al. 2021

Nordic Journal of Botany

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Ceratozamia, a genus of Zamiaceae, is one of the most species rich genera of gymnosperms in Mexico with a high level of species endemism. Over the last two decades, their known diversity has increased considerably because of extensive field work. Recently, 16 new species were described as a result of revision of species complexes and new explorations in southern Mexico. Here, we describe a new species from Oaxaca (Mexico) which inhabits an evergreen tropical forest. We collected this species during fieldwork in a little studied area located in the karst region of northern Oaxaca. The new species, C. martinezii sp. nov., is described and illustrated, and its phenological pattern is characterized. The species is compared with geographically close and morphologically similar species. Additionally, we present notes on the reproductive phenology of the new species and a taxonomic key for diagnosability.

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Conceptos taxonómicos, fenología y epifitismo: el caso de Ceratozamia tenuis (Zamiaceae)

Abstract: Taxonomía y sistemática Conceptos taxonómicos, fenología y epifitismo: el caso de Ceratozamia tenuis (Zamiaceae) Taxonomic concepts, phenology and epiphytism: the case of Ceratozamia tenuis (Zamiaceae)

Cited by 13 publications

References 27 publications

Phenology of Zamia boliviana (Zamiaceae), a threatened species from a seasonally dry biodiversity hotspot in South America

Phenology of Zamia boliviana (Zamiaceae), a threatened species from a seasonally dry biodiversity hotspot in South America

A novelty in Ceratozamia (Zamiaceae, Cycadales) from the Sierra Madre del Sur, Mexico: biogeographic and morphological patterns, DNA barcoding and phenology

A new Mexican Ceratozamia (Zamiaceae) species with notes on reproductive phenology

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