Article
Plant Sciences
Rithesh B. Natarajan, Pooja Pathania, Hardeep Singh, Anuradha Agrawal, Rajkumar Subramani
Summary: Genome size variation is an important attribute in evolutionary and species characterization. This study provides reliable information on the genome size and ploidy level of wild Musa species, which could be used in taxonomic and crop improvement programs.
Article
Genetics & Heredity
Hampapura Shivappagowda Kruthika, Martikyathnahalli Srikanta Rukmangada, Vorkady Girish Naik
Summary: This study investigates the variability in DNA content and genome size, chromosome number, ploidy and its relation with stomatal characteristics among 162 mulberry germplasm collection. It found that the majority of cultivated mulberries are diploids, with the 2C DNA content positively correlated with ploidy status and stomatal length. This study provides essential information for the mulberry breeding program.
Article
Genetics & Heredity
Gloria Martinez-Sagarra, Silvia Castro, Lucie Mota, Joao Loureiro, Juan A. Devesa
Summary: This study estimated the genome size and ploidy level of two subspecies in the F. yvesii polyploid complex, and explored the phenotypic variation. The highest ploidy level detected for Festuca and previously unknown cytotypes were reported. Morphometric analysis revealed a slight trend towards an increase in organ size with variation in ploidy levels.
Article
Genetics & Heredity
Kuo Sun, De-Long Guan, Hua-Teng Huang, Sheng-Quan Xu
Summary: This study measured the genome size of Gryllotalpa orientalis and identified nuclear repetitive elements. The estimated haploid genome size was 3.14 Gb by flow cytometry and ranged from 3.17 Gb to 3.77 Gb based on two k-mer methods. Class I-LINE retrotransposon elements were the most common families among the annotated repetitive elements.
Article
Ecology
Zhao Chen, Yongzhuo Guan, Mengli Han, Yuxia Guo, Jingxue Zhang, Zhipeng Guo, Genlou Sun, Xuebing Yan
Summary: Genome size variation and hybridization in plants are influenced by altitude. This study found a strong correlation between altitude and genome size in Elymus species, and larger genome size variations occurred in mid-altitude populations compared to other altitudes.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2022)
Article
Plant Sciences
Deli Zhan, Cheng Si, Zhaowei Bie, Lihui Wang, Xuemei Sun, Shipeng Yang, Qiwen Zhong
Summary: This study aims to explore the genome size of Jerusalem artichoke and its interaction with the plant's agronomy. It estimated the genome size of Jerusalem artichoke using flow cytometry and K-mers analysis and found significant correlations between genome size and several agronomic traits.
SOUTH AFRICAN JOURNAL OF BOTANY
(2023)
Article
Genetics & Heredity
Hao Yuan, Yuan Huang, Ying Mao, Nan Zhang, Yimeng Nie, Xue Zhang, Yafu Zhou, Shaoli Mao
Summary: Genomic size variation in Ensifera was studied by determining the genome size of 32 species using flow cytometry and constructing phylogenetic trees. The phylogenetic signal of genome size variation in Ensifera was found to be strong in both males and females. The evolutionary pattern of genome size in Ensifera showed complex evolution with different trends in different clades.
FRONTIERS IN GENETICS
(2021)
Article
Agronomy
Manqing Li, Miaoli Wang, Jingxue Zhang, Guilan Feng, Maryam Noor, Zhipeng Guo, Yuxia Guo, Yongzhuo Guan, Xuebing Yan
Summary: Understanding the cytological pattern of genome size and ploidy level of bermudagrass is essential for studying its evolution pattern and breeding. This study measured the genome size and ploidy level of bermudagrass along a longitudinal gradient and explored their relationship with climate factors. The tetraploid ploidy level was the most common, and aneuploidy was frequently observed in different regions.
Article
Physiology
Iris Louise Eleonora van de Pol, Adam Hermaniuk, Wilhelmus Cornelis Egbertus Petrus Verberk
Summary: Research shows that cell size affects gene expression, growth, and swimming performance of ectotherms at different temperatures, with these effects being temperature and ploidy-dependent. Triploids with larger cells outperformed diploids in cooler conditions, while diploids performed better in warmer conditions.
FRONTIERS IN PHYSIOLOGY
(2021)
Article
Biochemical Research Methods
Pedro Talhinhas, Rita Carvalho, Joao Loureiro
Summary: Information on fungal genome sizes is limited, but flow cytometry is now seen as the best method for measuring genome sizes rapidly and affordably. Fungal genome sizes vary across phylogeny and may be influenced by evolution towards plant mutualism or parasitism. The use of flow cytometry in fungal biology is still not widespread, but this article aims to promote its more generalized use.
Article
Plant Sciences
Shuang-feng Dai, Xun-ge Zhu, Ge-rang Hutang, Jia-yue Li, Jia-qi Tian, Xian-hui Jiang, Dan Zhang, Li-zhi Gao
Summary: This study investigated genome size variation in the genus Oryza using flow cytometry and k-mer analysis. The results showed that genome sizes varied greatly in Oryza, with similar sizes observed within the same genome types. Additionally, the amplification history of retrotransposons was found to be closely related to genome size variation.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Ecology
GaoMing Wei, Xuan Li, YanMing Fang
Summary: The study on four closely related oak species in Zijinshan, China, explored the variability of genome size within and among the species, as well as hybridization events, showing adaptation to the environment. The evolution of genome size in hybrid species was identified as expansion, with hybridization between sections possibly influenced by habitat disturbance. This research enhances understanding of Quercus evolution and aids in establishing guidelines for oak tree ecological protection.
ECOLOGY AND EVOLUTION
(2021)
Article
Plant Sciences
Fahad Al-Qurainy, Abdel-Rhman Z. Gaafar, Salim Khan, Mohammad Nadeem, Aref M. Alshameri, Mohamed Tarroum, Saleh Alansi, Naser B. Almarri, Norah S. Alfarraj
Summary: Genome size analysis of endemic species Reseda pentagyna and locally rare species Reseda lutea in Saudi Arabia was conducted using both flow cytometry and biocomputational methods, revealing discrepancies in genome size estimates likely due to the presence of long repetitive regions with high repeat content in both genomes. The study also identified potentially tetraploid or higher ploidy levels in Reseda lutea based on GenomeScope analysis. These findings provide fundamental cytogenetic information for future taxonomic studies and whole-genome sequencing of these species.
Article
Plant Sciences
Sheng-Kai Tang, Pei-Hsuan Lee, Wei-Ting Liou, Chen-Hsiang Lin, Yao-Moan Huang, Li-Yaung Kuo
Summary: Spores and pollen of plants are used as flow cytometric materials to infer genome sizes efficiently, making them potential plant genome size standards. In this study, we investigated the conditions and genome sizes of three fern spore collections and examined the quality and quantity of spore nucleus extractions stored at different ages. Our study is the first to develop and apply dried and refrigerated spores for genome size standards, which are ready to use and feature long-term storage.
Article
Agronomy
Dariusz Sochacki, Malgorzata Podwyszynska, Aleksandra Machlanska, Barbara Dyki
Summary: The study concludes that the morphological traits and nuclear DNA content of narcissus can be used to determine the possible ploidy level. The information on the origin and parental forms of narcissus can also be helpful in determining the ploidy level. However, further confirmation of the ploidy level requires verification of chromosome number and preferably karyotyping.
Article
Biochemistry & Molecular Biology
Sandip De, David M. Edwards, Vibha Dwivedi, Jianming Wang, Wazeer Varsally, Hannah L. Dixon, Anand K. Singh, Precious O. Owuamalam, Matthew T. Wright, Reece P. Summers, Md Nazmul Hossain, Emily M. Price, Marcin W. Wojewodzic, Francesco Falciani, Nikolas J. Hodges, Marco Saponaro, Kayoko Tanaka, Claus M. Azzalin, Peter Baumann, Daniel Hebenstreit, Saverio Brogna
Summary: The study found that the RNA helicase Upf1 in Schizosaccharomyces pombe is associated with active genes genome-wide, correlates with Pol II transcription and mRNA expression levels, and may regulate gene expression by influencing Pol II phosphorylation and transcription.
NUCLEIC ACIDS RESEARCH
(2022)
Article
Marine & Freshwater Biology
Sabrina Schultze, Tom Andersen, Dag O. Hessen, Anders Ruus, Katrine Borga, Amanda E. Poste
Summary: Climate and land-use changes have impacts on individual and interconnected ecosystems. This study examines the dynamics of organic matter (OM) and nutrients in two Norwegian river-to-fjord systems and finds that changes in river inputs can lead to shifts in coastal carbon and nutrient cycling, affecting ecosystem structure and function.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Review
Obstetrics & Gynecology
Hans Ivar Hanevik, Dag O. Hessen
Summary: Humans and all species are shaped by evolution through natural selection. IVF, as a reproductive technology, alters selection pressures and may have long-term impacts on human evolution.
HUMAN REPRODUCTION UPDATE
(2022)
Article
Environmental Sciences
You-Ren Wang, Nina Buchmann, Dag O. Hessen, Frode Stordal, Jan Willem Erisman, Ane Victoria Vollsnes, Tom Andersen, Han Dolman
Summary: By analyzing data from 22 forest sites across Europe, we found that deposition of sulphur and nitrogen has significant impacts on Net Ecosystem Production (NEP) of forests. Sulphur deposition above 5 kg S ha(-1) yr(-1) can significantly reduce NEP, while nitrogen deposition around 22 kg N ha(-1) yr(-1) has the highest positive effect on NEP. Our results emphasize the importance of air quality management for maintaining the biogeochemical functions of forests and mitigating climate change.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Studies
Dag O. Hessen, Vigdis Vandvik
Summary: It is increasingly clear that climate sustainability relies not only on societal actions, but also on the functioning and responses of ecosystems. Climate change and ecosystem degradation are reducing the capacity of global ecosystems to provide services such as carbon sequestration and hydrological regulation. Climate change adaptation and mitigation strategies should focus on conserving and managing ecosystems to minimize climate hazards and risks.
WEATHER CLIMATE AND SOCIETY
(2022)
Article
Environmental Sciences
Thomas R. Anderson, Dag O. Hessen, Wendy C. Gentleman, Andrew Yool, Daniel J. Mayor
Summary: This study investigates the biogeochemical cycling of carbon and nitrogen by high-latitude copepods using a new individual-based stoichiometric model. The results highlight the importance of understanding the physiological utilization of lipids by copepods and suggest that the seasonal lipid pump may be comparable to carbon sequestration via sinking particles in the North Atlantic.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Biodiversity Conservation
Isolde Callisto Puts, Jenny Ask, Matthias B. Siewert, Ryan A. Sponseller, Dag O. Hessen, Ann-Kristin Bergstrom
Summary: Global change affects gross primary production in benthic and pelagic habitats of northern lakes by influencing catchment characteristics and lake water biogeochemistry. Changes in key environmental drivers manifest in light limitation of total GPP and the relative size of the benthic habitat. External inputs of inorganic carbon can influence lake productivity patterns independent of terrestrial DOC supply.
GLOBAL CHANGE BIOLOGY
(2022)
Meeting Abstract
Toxicology
T. Husoy, E. Thepaut, I. H. Caspersen, H. K. Knutsen, L. S. Haug, A. Gkrillas, R. Hoogenboom, H. Dirven, B. Lindeman, M. W. Wojewodzic
TOXICOLOGY LETTERS
(2022)
Article
Ecology
Bjorn Walseng, Joel M. Durant, Dag O. Hessen, Kurt Jerstad, Anna L. K. Nilsson, Ole W. Rostad, Tore Slagsvold
Summary: Mating strategies in white-throated dippers were investigated based on a comprehensive dataset. The study revealed that a small percentage of breeding events were performed by polygynous males, and the occurrence of polygyny remained stable throughout the study period. Surprisingly, there was no difference in territory quality between polygynous and monogamous males. This study also found that the age and proximity of the females mated to polygynous males differed from those mated to monogamous males.
ECOLOGY AND EVOLUTION
(2022)
Article
Environmental Sciences
Nicolas Valiente, Alexander Eiler, Lina Allesson, Tom Andersen, Francois Clayer, Camille Crapart, Peter Dorsch, Laurent Fontaine, Jan Heuschele, Rolf D. Vogt, Jing Wei, Heleen A. de Wit, Dag O. Hessen
Summary: Boreal lakes, the most abundant lakes on Earth, are experiencing browning due to changes in acid rain deposition, climate, and land use. This browning affects aquatic communities, ecosystem processes, and greenhouse gas emissions. A study conducted in southeastern Norway showed that lake size, precipitation, and terrestrial primary production in the watershed are key determinants of greenhouse gas saturation in boreal lakes. The findings highlight the importance of incorporating multiple explanatory parameters in prediction models for better understanding and extrapolation across the boreal biome.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Multidisciplinary Sciences
Lina Allesson, Nicolas Valiente, Peter Dorsch, Tom Andersen, Alexander Eiler, Dag O. Hessen
Summary: Lakes play a significant role in the global climate, but the environmental drivers of CO2 concentrations along latitudinal and climate gradients are not well understood. This study investigated boreal, sub-Arctic, and high-Arctic lakes in Norway to better understand net heterotrophy and gas balance. The results showed that CO2 saturation levels varied more than O2 saturation levels, and the CO2:O2 ratio was mainly influenced by DOC concentration in boreal lakes and conductivity in sub-Arctic and high-Arctic lakes.
SCIENTIFIC REPORTS
(2022)
Article
Biochemistry & Molecular Biology
Hildegunn Dahl, Jarle Ballangby, Torstein Tengs, Marcin W. Wojewodzic, Dag M. Eide, Dag Anders Brede, Anne Graupner, Nur Duale, Ann-Karin Olsen
Summary: This study examines the effects of dose rate and total dose on the epigenome. The results demonstrate that dose rate plays a role in radiation-induced epigenomic changes and chronic low dose rate exposure does not result in long-term alterations.
Article
Marine & Freshwater Biology
Sabrina Schultze, Tom Andersen, Nina Knudtzon, Anders Ruus, Jan T. Rundberget, Steven J. Brooks, Amanda Poste, Dag O. Hessen, Katrine Borga
Summary: The export of terrestrial dissolved organic matter (terrDOM) to coastal marine ecosystems can affect local filter feeders and the local food web. In this study, blue mussels were exposed to different types of DOM along with teflubenzuron, a commonly used aquaculture medicine. The results showed that the accumulation of teflubenzuron was influenced by the type of DOM, but the differences between DOM types were not considered environmentally relevant.
AQUATIC TOXICOLOGY
(2023)
Article
Environmental Sciences
T. Husoy, I. H. Caspersen, E. Thepaut, H. Knutsen, L. S. Haug, M. Andreassen, A. Gkrillas, B. Lindeman, C. Thomsen, D. Herzke, H. Dirven, M. W. Wojewodzic
Summary: This study analyzed the dietary and dermal external exposure to PFOA in the European population using a PBPK model. The results showed that diet was the main contributor to internal exposure, but for some women participating in the study, personal care products also played a significant role. Therefore, further studies on exposure to PFOA and other PFAS from personal care products, especially for women, are needed.
ENVIRONMENTAL RESEARCH
(2023)
Article
Medicine, General & Internal
Hans Ivar Hanevik, Dag Olav Hessen
TIDSSKRIFT FOR DEN NORSKE LAEGEFORENING
(2022)