Gayana Botanica <p><strong>GAYANA BOTANICA</strong>, dedicated to the French naturalist Claude Gay, is a journal for the rapid publication of original research in all areas of the biology of plants and fungi.</p> <p><strong>WoS Impact Factor:</strong>&nbsp; <strong>0.705</strong> (2019)&nbsp; 0.531 (5 years)</p> <p><strong>SciELO</strong> (Scientific Electronic Library Online): <a href="" target="_blank" rel="noopener"></a></p> en-US <p>Authors who publish with this journal agree to the following terms:</p> <ol> <li class="show">Authors retain copyright and grant the journal right of first publication.</li> <li class="show">The articles in this journal are published under <a href="" target="_blank" rel="noopener">Creative Commons Attribution-NonCommercial 4.0 International License</a> that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.</li> <li class="show">Authors are permitted and encouraged to post their work online (e.g., in institutional repositories, on their website or ResearchGate) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See<a href="" target="_new">The Effect of Open Access</a>).</li> </ol> (Alfredo Saldaña) (Carlos Zamora) Tue, 30 Jun 2020 00:00:00 -0400 OJS 60 Cultivation and biochemical composition of marine diatoms (Bacillariophyta) of Santa Lucía Bay, Acapulco, Mexico <p>The objective of this study was to identify, isolate and cultivate three species of marine diatoms in discontinuous scaling systems: <em>Eupyxidicula turris</em>, <em>Trieres mobiliensis</em> and <em>Biddulphia alternans</em>, from the Santa Lucia Bay of Acapulco, México. Identification of species was performed with binocular optical microscopy and scanning electron microscopy. Likewise, the development of three species through growth kinetics and quantification of proximal biochemical content (lipids, proteins, carbohydrates and ashes) was evaluated. The species showed a maximum growth of 2.1, 3.0, and 8.5 cells mL<sup>-1</sup>, and a specific growth rate &gt;0,50 days, at the end of the exponential phase of the third scale; and a dry biomass yield of 139.6; 163.3 and 219.9 mg to <em>E. turris, T. mobiliensis</em> and <em>B. alternans</em>, respectively. Lipids content (11.1 ± 0.31 to 11.5 ± 0.18%), proteins (8.2 ± 0.25 to 8.8 ± 0.35%) and carbohydrates (10 ± 0.22 to 30 ± 0.21%), were similar for the three species. Nevertheless, <em>Biddulphia alternans </em>recorded better cell growth (16 x 10<sup>3</sup> daily cells) and higher biomass yield (219.9 mg L<sup>-1</sup>); considering it a diatom species with potential for further researches with biotechnological purposes</p> Victor A. Cervantes-Urieta, Donaciano Pérez-Castro, María A. Galeana-Parra, Eustacio Ramírez-Fuentes, Ma. Nieves Trujillo-Tapia Copyright (c) Sun, 02 Aug 2020 00:00:00 -0400 Catalogue of the culture collection of symbionts and pathogenic fungal species of insects and other arthropods from Argentina <p>This manuscript seeks to disclose the updated data and relevant information about the entomopathogenic fungi strains preserved at the Center for Parasitological and Vector Studies (CEPAVE) of the National Scientific and Technical Research Council and National University of La Plata (CONICET-UNLP), Argentina. The data provided here is the result of surveys of native isolates from the different phytogeographic regions of Argentina, specified as follows: acronym, substrate, host insect species, collection date, geographic coordinate references, and culture medium in which it was isolated; and the aim is to provide basic information about the organisms preserved in the afore mentioned microorganisms collection. This collection was developed for the purposes of research, teaching and technological associations with companies. It started in 1988, and it is registered in the Latin American Federation of Culture Collections (FELACC) as Institutional Partner: No. SI-06, and in the World Federation for Culture Collections (WFCC) (<a href=""></a>). In accordance with the WFCC guidelines, this collection is incorporated as a partner to the World Data Centre for Microorganisms (WDCM, 973 CEP). The preservation methods used are sterile distilled water, paper, mineral oil, silica gel, freezer at -20 and -70 °C and lyophilization, quality and viability controls are carried out. So far, 40 % of the species have been identified by molecular techniques, and the study of the remaining isolated species is under development. The collection consists of more than 684 strains which belong mostly to the <em>Beauveria, Metarhizium, Isaria, Lecanicillium</em> genera, as well as some species of Entomophthorales.</p> Claudia C. López Lastra, Romina G. Manfrino, Mónica B. Rodríguez, Alejandra C. Gutierrez, Eliana Ordoqui, Graciela T. Navone Copyright (c) 2020 Claudia C. López Lastra, Romina G. Manfrino, Mónica B. Rodríguez, Alejandra C. Gutierrez, Eliana Ordoqui, Graciela T. Navone Tue, 30 Jun 2020 00:00:00 -0400 Contribution to the knowledge of the lichen biota of Katalalixar National Reserve, Patagonia, Chile <p>Lichens are recognized as bioindicators of ecosystem processes associated with environmental disturbances. However, its evaluation in the time requires systematic records of biodiversity which are non-existent in the Katalalixar National Reserve. The aim of this study was to catalog the richness and distribution of lichen biota of Katalalixar National Reserve, not only by identifying the species but interpreting them in their ecological and biogeographic context. By random sampling in <em>Nothofagus nitida</em>, <em>Pilgerodendron uviferum</em> forests and peat bogs 70 species were identified, belonging to 32 families and 65 genera. A high number of endemism was found, with 34% of the species endemic to Southern South American and the Chilean endemic <em>Pseudocyphellaria guzmanii </em>constitutes a new record for the Aisen Region.</p> Johana Villagra, David Alors, Angélica Casanova-Katny Copyright (c) 2020 Johana Villagra, David Alors, Angélica Casanova-Katny Tue, 30 Jun 2020 00:00:00 -0400 Structure and regeneration of Prumnopitys andina forests in the Andes of southern Chile <p><em>Prumnopitys andina</em> is a conifer tree species with a narrow distribution in Chile and Argentina. Despite its ecological importance, knowledge about the structure and dynamics of the forests where <em>P. andina</em> grows is limited. We aim to describe the structure and regeneration of forest with high presence of <em>P. andina</em>. Forests near Lonquimay (38°1' S, 71.3 W - 38°3'S, 71°3' W) were sampled by measuring trees, regeneration and vascular flora through 24 plots. We found that <em>P. andina</em> predominantly occurs in the upper canopy (15-18 m), usually in company of <em>Nothofagus obliqua </em>and/or<em> Austrocedrus chilensis, </em>in addition to<em> Maytenus boaria</em> and <em>Lomatia hirsuta </em>that occur in the mid-canopy (4-8 m). Based on forest structure, we identified three types of <em>P. andina</em> forests: open, secondary-mature, and pure. Pure <em>P. andina</em> forests reached basal areas among the largest reported for for temperate forests southern South America (230 m<sup>2</sup>/ha). <em>P. andina</em> regeneration ranged from 1,550 individuals/ha in open forests to 25,000 individuals/ha in pure forests. <em>P. andina</em> exhibited a continuous regeneration strategy, which in the absence of human disturbances, such as grazing by cattle or selective logging, suggests that its populations are self-sustaining.</p> Rodrigo Vargas-Gaete, Christian Salas-Eljatib, Diego Penneckamp, Zoia Neira, M. Cristina Diez, Ricardo Vargas-Picón Copyright (c) 2020 Rodrigo Vargas-Gaete, Christian Salas-Eljatib, Diego Penneckamp, Zoia Neira, M. Cristina Diez, Ricardo Vargas-Picón Tue, 30 Jun 2020 00:00:00 -0400 Karyotypic analysis of Famatina andina (Phil.) Ravenna (Amaryllidaceae): first record of South American Hippeastreae with secondary centromeric constrictions <p>Bulbs were collected from a population of <em>Famatina andina</em> (Phil.) Ravenna in central Chile. Their chromosomes were analyzed and it was observed that the cariotypic formula and chromosomal number are identical to <em>Famatina cisandina</em> Ravenna. Secondary centromeric constrictions were also observed in chromosomes 1, 2 and 7, and the nucleolus organizing region (NOR) was not observed in the long arm of chromosome 7. This is the first report of secondary centromeric constrictions in South American Hippeastreae.</p> Carlos Baeza, Jorge Macaya Copyright (c) 2020 Carlos Baeza, Jorge Macaya Tue, 30 Jun 2020 00:00:00 -0400 Record of Peridiniopsis borgei Lemmermann (Dinophyceae) in Peruvian inland waters <p>We reported the presence of <em>Peridiniopsis borgei</em> Lemmermann in La Encantada lake (Province of Huaura) and studied the specimens using optical and scanning electron microscopical techniques. The population of <em>P. borgei </em>showed a variation in the number and degree of development of the marginal ridges. This is the first illustrated report of the species in Perú</p> Enrique Ascencio, Leonardo Mendoza-Carbajal, Maribel Baylón, Patricio Rivera, Aleksander F. Krakhmalnyi, Fabiola Cruces, Roberto Urrutia Copyright (c) 2020 Enrique Ascencio, Leonardo Mendoza-Carbajal, Maribel Baylón, Patricio Rivera, Aleksander F. Krakhmalnyi, Fabiola Cruces, Roberto Urrutia Tue, 30 Jun 2020 00:00:00 -0400 New records of desert fungi from Nevado Tres Cruces and Pan de Azúcar national parks, Atacama Region, Chile <p>New records of fungi, forming two associations with contrasting fruiting body morphology and ecological preferences are reported from the Chilean desert, viz.: the agaricoid <em>Conocybe cf. tenera</em> and <em>Coprinus comatus</em> associated with riparian grassy environments in the high Andean Nevado Tres Cruces National Park and gasteroid <em>Geastrum floriforme</em> and <em>Tulostoma</em> spp. together with sequestrate <em>Montagnea arenaria</em>, all associated with xerophilic shrub vegetation on sand in the coastal fog zone of Pan de Azúcar National Park.</p> Sandra Troncoso, Angélica Casanova-Katny, Catalina Marín, Goetz Palfner Copyright (c) 2020 Sandra Troncoso, Angélica Casanova-Katny, Catalina Marín, Goetz Palfner Tue, 30 Jun 2020 00:00:00 -0400 Opportunities and challenges for research in systematic and evolutionary botany in Latin America <p>The floras of countries of Latin America offer research opportunities on numerous significant themes, such as: adaptation in diverse habitats, island biogeography, speciation in high mountain ecosystems, evolution in lowland tropical zones, and impact from Pleistocene glaciation. Because these biological perspectives transgress country borders, collaboration among investigators is essential. Latin America contains approximately 110,000 native vascular plant species, or 29% of the world’s flora. A more precise inventory is needed for construction of more predictive classifications and interpretation of macro- and microevolutionary processes. One solution for providing deeper inventorying would be employment of young and low-income parataxonomists on a massive scale, organized in a <em>Cuerpo de Patrimonio Nacional </em>within each country. Another priority is botanical monography, especially with a broad evolutionary focus. Literature accessibility and digital images of herbarium material from the Internet support monographic work more than ever before. Travel for monographic field work across borders is also most important so that relationships within entire natural plant groups can be revealed. The Internet offers opportunities for online publishing of monographs with deeper visual content and hence greater outreach for other sectors of society. Impact factors have become accepted world-wide for administrative evaluation of professional achievement, and it is recommended that strategies be adopted for maximizing their usefulness for career development. To stimulate cooperative work with scientists outside of Latin America, those within the region must become more proficient in English, including giving talks in this language at international meetings. English proficiency allows digestion of the international literature and opens doors to asking fundamental biological, rather than just regional, questions.</p> Tod F. Stuessy Copyright (c) 2020 Tod F. Stuessy Tue, 30 Jun 2020 00:00:00 -0400