Article
Computer Science, Information Systems
Tahir Mahmood, Jiho Choi, Kang Ryoung Park
Summary: The visual classification of pollen grains is essential for various agricultural applications, particularly for preserving the biome and maintaining the quality of honey-based products. Artificial intelligence can automate the process, but there is still room for improvement in terms of processing time, memory size, and accuracy. A new method called APFA-Net, based on deep feature aggregation and channel-wise attention, outperforms existing state-of-the-art methods.
JOURNAL OF KING SAUD UNIVERSITY-COMPUTER AND INFORMATION SCIENCES
(2023)
Article
Forestry
Fen Xiao, Yuchen She, Jiyun She, Yun Wang, Fei Wu, Peng Xie, Qianxin Chen
Summary: This study examines the pollen morphology of a remnant and endemic wild species of Cathaya argyrophylla and explores its intraspecific variability. By analyzing quantitative and qualitative traits of pollen grains, diagnostic features that can distinguish populations were identified, resulting in the classification of 23 samples into two, three, or four clusters. Precipitation factors were found to have a greater impact on pollen morphology compared to geographical and temperature factors. Furthermore, the size of pollen grains exhibited a positive correlation with main precipitation factors and a negative correlation with temperature factors. This research provides valuable insights for seed breeding and population reproduction of the endangered C. argyrophylla tree.
Article
Geography, Physical
Heather S. Pardoe, Christopher J. Cleal, Christopher M. Berry, Borja Cascales-Minana, Basil A. S. Davis, Jose B. Diez, Mariana Filipova-Marinova, Thomas Giesecke, Jason Hilton, Dimiter Ivanov, Evelyn Kustatscher, Suzanne A. G. Leroy, Jennifer C. McElwain, Stanislav Oplustil, Mihai Emilian Popa, Leyla J. Seyfullah, Ellen Stolle, Barry A. Thomas, Dieter Uhl
Summary: Studying biodiversity involves determining diversity of past floras through various sampling strategies and metrics. Classificatory techniques and ordination methods are commonly used for identifying spatial and stratigraphical diversity patterns. Choosing the appropriate analysis method is crucial depending on the research question.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Environmental Sciences
Khaiwal Ravindra, Akshi Goyal, Suman Mor
Summary: Pollen allergy is a significant concern, and this study provides a reference pollen guide for future research by studying the morphological characteristics of airborne pollen. The findings show that the shape, size, aperture type, and exine pattern of pollen are related to the classification of plant groups. Most of the airborne pollen are small in size and have distinct exine patterns. This study contributes to a better understanding of airborne pollen biodiversity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Plant Sciences
Zeynep Busra Erarslan, Sukran Kultur
Summary: The main purpose of this study was to characterize the pollen of Doronicum L. taxa in Turkey. Pollen morphology of 11 species and one subspecies of Doronicum was examined using light microscopy and scanning electron microscopy. Principal component analysis and hierarchical cluster analysis were conducted to identify closely related species and distinguishable palynological characters. The results revealed valuable palynological characteristics for discriminating Doronicum taxa and provided insights for taxonomic research.
Article
Biochemical Research Methods
Sydney B. Wizenberg, Laura R. Newburn, Mateus Pepinelli, Ida M. Conflitti, Rodney T. Richardson, Shelley E. R. Hoover, Robert W. Currie, Pierre Giovenazzo, Amro Zayed
Summary: The study evaluated the utility of an integrative approach to analyze mixed-pollen samples from agricultural sites in Canada. The findings suggest that pollen metabarcoding is a more suitable method for characterizing the composition of mixed pollen samples compared to traditional melissopalynology. Additionally, adopting a multi-locus approach that integrates information from multiple markers can improve the quantitative application of this method.
Article
Agricultural Engineering
Mamta Kumari, Archana Prasad, Laiq Ur Rahman, Ajay Kumar Mathur, Archana Mathur
Summary: The present study investigated pollen morphology and viability of four Ocimum L. species, revealing that O. basilicum had the highest pollen viability and germination rate, while O. sanctum had the lowest viability. The highest pollen germinability for all four Ocimum species was observed at -20 degrees Celsius. This research could aid in taxonomic identification of Ocimum species and be utilized in conservation efforts and improvement through cross-hybridization breeding programs.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Plant Sciences
Thayna Rosa Batista Martins, Raquel Maria Batista Souza-Souza, Wellerson Picanco Leite, Roberto Lourenco Esteves, Claudia Barbieri Ferreira Mendonca, Vania Goncalves-Esteves
Summary: This study presents a pollen analysis of 13 species of Dendrophorbium in Brazil, aiming to contribute to the taxonomy of the group. The examination of the pollen grains revealed that they are monadic, medium-sized, and have specific aperture shape and echinus characteristics that differentiate the species.
Article
Environmental Sciences
Jinane Farah, Marie Choel, Patricia de Nadai, Joanne Balsamelli, Sylvie Gosselin, Nicolas Visez
Summary: This study identified several mechanisms of action of gaseous pollutants on allergenic pollen, including modifying the external lipid fraction by reactivity of alkenes, adsorbing on the surface of pollen grains and causing oxidative stress after inhalation, as well as promoting the release of cytoplasmic bioactive lipids by facilitating pollen rupture.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Anatomy & Morphology
Farheen Gul, Khafsa Malik, Rahmatullah Qureshi, Mushtaq Ahmad, Lubna Ansari, Muhammad Zafar, Sabtain Hussain, Sidra Khalid, Muhammad Imran, Neelam Rashid
Summary: The study investigated the palyno-morphological features of 13 Asteraceous species from District Dera Ismail Khan, Khyber Pakhtunkhwa, Pakistan, using light and scanning electron microscopy. Different pollen characters such as shape, size, aperture, exine thickness, and sculpturing were observed. This research highlights the importance of pollen morphology in the taxonomy and classification of Asteraceous flora at various levels.
MICROSCOPY RESEARCH AND TECHNIQUE
(2022)
Article
Geography, Physical
Yun Zhang, Lixin Chen, Yuanyuan Li, Zhaochen Kong
Summary: This study explores the quantitative relationships between surface soil pollen distribution and environmental parameters in northern Xinjiang, China, using ordination and correlation analyses. The results show that annual precipitation, precipitation in July, annual temperature, temperature in July, and annual wind speed are the main factors influencing the surface pollen distribution. The findings provide valuable information for paleoclimate reconstruction and future climate predictions.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Ecology
Lisa Prudnikow, Birgit Pannicke, Roebbe Wuenschiers
Summary: The possibility of identifying plants based on the taxonomic information from their pollen grains has various applications in biology. In the past, pollen origin was analyzed using microscopy and chemical treatment, which is time-consuming and requires expert knowledge. Now, DNA analysis provides advantages and challenges compared to traditional methods. This article presents a practical guide for genetic pollen analysis using nanopore sequencing, with a focus on pollen collected by pollinating insects.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Engineering, Chemical
Marie Choel, Anastasia Ivanovsky, Antoine Roose, Mona Hamze, Anne-Marie Blanchenet, Nicolas Visez
Summary: The coagulation of airborne particles on the surface of allergenic pollen grains is not well understood. This study quantitatively assessed the particulate deposition on allergenic pollen surfaces by sampling birch pollen grains (BPGs) during pollination. It was found that, on average, polluted BPGs carried 2 +/- 1 particles, representing an average surface coverage of 0.95%. The main coagulation process was hypothesized to be particle deposition by gravitational settling, although the effects of electric charges carried by pollen remain unknown. The presence of particle-polluted allergenic pollens appears to be common in the urban atmosphere, even under low air pollution conditions.
JOURNAL OF AEROSOL SCIENCE
(2022)
Article
Plant Sciences
Meng Li, Chang-Fen Tian, Muhammad Idrees, Mitra Pathak, Xian-Hua Xiong, Xin-Fen Gao, Xian-Rong Wang
Summary: In this study, scanning electron microscopy was used to observe the pollen morphology of 80 species from the genus Sorbus in the Rosaceae family. Cluster analysis revealed significant differences in the pollen characteristics among the species. The results showed that all studied Sorbus species had isopolar and tricolporate pollen grains, with different shapes and ornamentations. The cluster analysis divided the 80 species into six groups, with one group exclusively consisting of species from the subgenus Sorbus. Although pollen micro-morphologies alone cannot establish the taxonomic relationships within Sorbus, they provide valuable information for species-level classification.
Article
Energy & Fuels
Debra A. Willard, Leslie F. Ruppert
Summary: This paper expands the description of sedimentary organic matter from coal petrography to include palynological and geochemical sedimentary organic matter. It demonstrates the use of palynological and geochemical analysis in understanding patterns and impacts of changing climate and fire regimes, as well as evaluating anthropogenic impacts on Earth and supporting forensics investigations.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2023)
Article
Plant Sciences
Jaquelini Luber, Tatiana Tavares Carrijo, Mauricio Moreira Martins, Claudia Barbieri Ferreira Mendonca, Vania Goncalves-Esteves
Summary: In this study, pollen grains of 16 species of Campomanesia were analyzed using light and scanning electron microscopy. Heat map and multivariate regression tree analyses were performed to identify differences among species based on pollen morphology. The results showed that pollen morphology can be used as a reliable tool to distinguish different species of Campomanesia.
Article
Plant Sciences
Vania Goncalves-Esteves, Gabrielle Reboredo Menezes Vieira, Simone Cartaxo-Pinto, Claudia Barbieri Ferreira Mendonca
Summary: This study analyzed pollen grains of 33 species belonging to the Coccocypselum and Coussarea-Faramea clades and found that there were differences in pollen characteristics among these clades, confirming the current taxonomic classification.
Article
Plant Sciences
Gabriel Henrique Gomes de Souza Freitas Teixeira, Ana Carolina Mezzonato-Pires, Lamarck Rocha, Vania Goncalves-Esteves, Claudia Barbieri Ferreira Mendonca
Summary: In this study, a palynological investigation was conducted on 20 heterostylous species of the genus Piriqueta, with a focus on their pollen morphology. The examination revealed significant variations in pollen shape among different floral morphs. These findings highlight the importance of considering the floral morphs when describing the pollen of heterostylous species.
PLANT SYSTEMATICS AND EVOLUTION
(2023)
Article
Biodiversity Conservation
Luiz Antonio Costa Rodrigues, Claudia Barbieri Ferreira Mendonca, Marcus Vinicius Vaughan Jennings Licinio, Kamila da Matta Agostini, Alexandre Santos Alencar, Vania Goncalves-Esteves
Summary: This study aimed to investigate the feasibility of using pollen grains as biomarkers of atmospheric transport between South America and Antarctica. Palynological analysis of snow samples collected in 2005 revealed the presence of spores and pollen grains from South America. The use of the Hybrid Single-Particle Lagrangian Integrated Trajectory model showed that the Andes serve as a heat source for pollen transport, confirming the feasibility of using pollen grains as biomarkers.
Article
Plant Sciences
Thayna Rosa Batista Martins, Raquel Maria Batista Souza-Souza, Wellerson Picanco Leite, Roberto Lourenco Esteves, Claudia Barbieri Ferreira Mendonca, Vania Goncalves-Esteves
Summary: This study presents a pollen analysis of 13 species of Dendrophorbium in Brazil, aiming to contribute to the taxonomy of the group. The examination of the pollen grains revealed that they are monadic, medium-sized, and have specific aperture shape and echinus characteristics that differentiate the species.
Article
Plant Sciences
Simone Cartaxo-Pinto, Ilgner Fernando Tavares Vieira, Jeane Marinho Nascimento, Vinicius R. Bueno, Gustavo Heiden, Claudia Barbieri Ferreira Mendonca, Vania Goncalves-Esteves
Summary: This study characterized the pollen morphology of eight species from Calea sect. Meyeria, based on acetolyzed and unacetolyzed pollen grains. Despite the similarities, differences were observed in pollen size, polar area, sexine ornamentation, and endoaperture characteristics. Palynological analysis provided new information for species distinction within Calea sect. Meyeria.
Article
Plant Sciences
Simone Cartaxo-Pinto, Marcelo Fernando Devecchi, Jose Rubens Pirani, Claudia Barbieri Ferreira Mendonca, Vania Goncalves-Esteves
Summary: In this study, the pollen morphology and ultrastructure of 36 species from Simaroubaceae family were examined. The results showed that there were significant variations in pollen features among different taxa, with most species exhibiting reticulate ornamentation.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2023)
Article
Entomology
Vinicius Jose Fernandes, Elen de Lima Aguiar-Menezes, Jose Guilherme Marinho Guerra, Claudia Barbieri Ferreira Mendonca, Vania Goncalves-Esteves, Janaina Ribeiro Costa-Rouws, Thiago Sampaio de Souza
Summary: In this study, it was found that Chrysoperla externa faces challenges in foraging for pollen due to differences in pollen accessibility and morphology. The experiment showed that Cajanus cajan and F. macrophylla pollen were not consumed by Chrysoperla externa. Overall, Chrysoperla externa preferred pollen from the Poaceae family over the Fabaceae family.
NEOTROPICAL ENTOMOLOGY
(2023)
