Analysis of exotic pollen grains and spores from thawing lakes of King George Island, Antarctic Peninsula

Agostini, Kamila da Matta; Rodrigues, Luiz Antonio da Costa; Alencar, Alexandre Santos de; Mendonça, Cláudia Barbieri Ferreira; Gonçalves-Esteves, Vânia

doi:10.1016/j.revpalbo.2017.05.006

Cited by 5 publications

(2 citation statements)

References 28 publications

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“…The strong winds often experienced in this region may also contribute to local redistribution of exotic biological material. Kappen & Straka (1988) reported pollen and spores of 23 taxa and Agostini et al (2017) reported pollen and spores of 17 different families of vascular plants in studies carried out on King George Island, also in the South Shetland Islands. This included pollen of Fagus spp.…”

Section: Discussionmentioning

confidence: 99%

Exploring the plant environmental DNA diversity in soil from two sites on Deception Island (Antarctica, South Shetland Islands) using metabarcoding

et al. 2021

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The few Antarctic studies to date to have applied metabarcoding in Antarctica have primarily focused on microorganisms. In this study, for the first time, we apply high-throughput sequencing of environmental DNA to investigate the diversity of Embryophyta (Viridiplantae) DNA present in soil samples from two contrasting locations on Deception Island. The first was a relatively undisturbed site within an Antarctic Specially Protected Area at Crater Lake, and the second was a heavily human-impacted site in Whalers Bay. In samples obtained at Crater Lake, 84% of DNA reads represented fungi, 14% represented Chlorophyta and 2% represented Streptophyta, while at Whalers Bay, 79% of reads represented fungi, 20% represented Chlorophyta and < 1% represented Streptophyta, with ~1% of reads being unassigned. Among the Embryophyta we found 16 plant operational taxonomic units from three Divisions, including one Marchantiophyta, eight Bryophyta and seven Magnoliophyta. Sequences of six taxa were detected at both sampling sites, eight only at Whalers Bay and two only at Crater Lake. All of the Magnoliophyta sequences (flowering plants) represent species that are exotic to Antarctica, with most being plausibly linked to human food sources originating from local national research operator and tourism facilities.

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Section: Discussionmentioning

confidence: 99%

Exploring the plant environmental DNA diversity in soil from two sites on Deception Island (Antarctica, South Shetland Islands) using metabarcoding

et al. 2021

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“…Trabalhos anteriores descreveram a morfologia polínica de várias espécies de Cyperaceae, a exemplo de Salgado-Labouriau (1973), Barth et al (1976), Palacios-Chaves et al (1991), El Ghazali (1993, Pignotti e Mariotti (2004), Nagels et al (2009), Halbritter et al (2010), Wronska-Pilarek et al (2010), Agostini et al (2017) e Lorente et al (2017). Os autores, de modo geral, descreveram os grãos de pólen como mônades, pequenos a grandes, heteropolares, suboblatos, subprolatos, prolatos ou perprolatos, subtriangulares, ovoides ou elipsoidais em vista equatorial, polo distal arredondado e polo proximal cônico, inaperturados, monosulcados, diporados, triporados, pantoaperturados, heteraperturados (3-6 colpados, 1porado no polo distal), exina escabrada, rugulada, microequinada, microrreticulada, granulada e perfurada.…”

Section: Poaceae Aristida Sp (Figura 2g-h)unclassified

Flora polínica de espécies herbáceas de Fabales e Poales das restingas da Praia de Massarandupió, Litoral Norte da Bahia

Duarte,

Silva,

Saba

et al. 2023

Paubrasilia

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O trabalho objetivou descrever a morfologia polínica de espécies herbáceas de Fabales e Poales presentes na praia de Massarandupió. Para isto, grãos de pólen de 12 espécies pertencentes às ordens supracitadas foram acetolisados, mensurados, descritos sob microscopia óptica e fotomicrografados. Os grãos de pólen variaram de médios a grandes. Em Fabales, se apresentaram como isopolares, subprolatos a prolatos, âmbito subcircular e 3-colporados com exina microrreticulada ou psilada, em Fabaceae, e âmbito circular, (8)-9-zonocolporados e endocingulados, em Polygalaceae. Em Poales, se apresentaram como heteropolares e isopolares, com exina granulada, rugulada, finamente rugulada e psilada. Em Cyperaceae, subprolatos, com contorno piriforme em vista equatorial, heteroaperturados, 1-ana-ulcerado e inaperturados. Em Poaceae são esféricos, prolato-esferoidais e circulares; monoporados e anulados. Os resultados obtidos corroboram os dados presentes na literatura para os táxons estudados e têm elevado potencial de aplicação em outras subáreas da Palinologia.

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Diversity of pollen grains transported from South America to the Antarctic Peninsula through atmospheric dispersal

Rodrigues¹,

Mendonça²,

Licínio

et al. 2023

Polar Biol

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Analysis of exotic pollen grains and spores from thawing lakes of King George Island, Antarctic Peninsula

Cited by 5 publications

References 28 publications

Exploring the plant environmental DNA diversity in soil from two sites on Deception Island (Antarctica, South Shetland Islands) using metabarcoding

Exploring the plant environmental DNA diversity in soil from two sites on Deception Island (Antarctica, South Shetland Islands) using metabarcoding

Flora polínica de espécies herbáceas de Fabales e Poales das restingas da Praia de Massarandupió, Litoral Norte da Bahia

Diversity of pollen grains transported from South America to the Antarctic Peninsula through atmospheric dispersal

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