Article
Ecology
Guillaume Bridier, Frederic Olivier, Jacques Grall, Laurent Chauvaud, Mikael K. Sejr, Rejean Tremblay
Summary: This study aimed to investigate the seasonal lipid dynamics of four dominant benthic bivalves in Arctic coastal habitats. The results showed a decrease in lipid reserves between May and August, suggesting limited access to fresh organic matter until sea ice break-up. Large interspecies differences in gill fatty acid composition were observed, which may be related to species life span and metabolic strategies.
ECOLOGY AND EVOLUTION
(2023)
Article
Microbiology
Maxime Tourte, Sarah Coffinet, Lars Woermer, Julius S. Lipp, Kai-Uwe Hinrichs, Philippe M. Oger
Summary: This study comprehensively characterized the lipid composition of the archaeon Thermococcus barophilus, identifying 82 different polar lipids and discovering that the majority of its lipids remain inaccessible to current analytical procedures.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Plant Sciences
Weiqian Yu, Mingyan Jiang, Qiling Yue, Yixiong Yang, Zhenghua Luo, Bingyang Lv, Rui He, Shihan Feng, Meng Yang
Summary: Indocalamus, with its expansive leaves and abundant bioactive compounds, can adapt to low-light environments and promote leaf growth. The content of active substances in Indocalamus leaves is influenced by different light environments and seasons, with best harvest results in autumn and winter.
Article
Biology
Tierney M. Shaible, Luciano M. Matzkin
Summary: This study examines the strategies used by Drosophila mojavensis to withstand the high temperatures of the Sonoran Desert summer. The researchers found that despite lower viability, the population is able to reproduce during this period, but adult survivorship is greatly reduced. Stress resistance also increases during the summer months in both adult and larval stages.
Article
Agriculture, Dairy & Animal Science
Yanmei Zhang, Yabo Zhao, Changqing Li, Li Wang, Feng Tian, Hai Jin
Summary: This study evaluated the physiological adaptations of Mongolian sheep in cold plateau environments by investigating the changes in physiological mechanisms and serum biochemistry of sheep reared in the warm and cold seasons. The results showed that in the cold season, glucose and lipid metabolism, thermogenesis, and immune responses of the grazing Mongolian sheep were notably enhanced. However, the antioxidant defense system was damaged during the cold season. Overall, glucose metabolism, lipid metabolism, thermogenesis, and immune responses were stimulated to enable grazing Mongolian sheep to adapt to cold climatic conditions.
Article
Plant Sciences
L. Xie, Q. Xiao, C. Yin
Summary: Seasonal soil freezing and freeze-thaw cycles in western Sichuan, China have a serious impact on low-order fine roots, causing damage to cell membranes and root vitality, as well as increased MDA content and O-2 center dot(-) production. The effects of freeze-thaw cycles are stronger than soil freezing treatment. Low-order fine roots are the unit that responds to cold stress. This study explains the physiological differences in responses of fine roots of different root orders to seasonal soil freezing, supporting agriculture and forest management.
Article
Microbiology
Shanmei Zou, Zheng Huang, Xuemin Wu, Xinke Yu
Summary: Understanding the physiological and genetic regulation mechanisms of microalgae is crucial for screening potential strains with high lipid production. In this study, different strains of Chlorella sorokiniana from arctic glacier, desert, and temperate native lake were analyzed under nitrogen deprivation. The arctic strains exhibited the highest lipid content, which was attributed to the genetic regulation of fatty acid biosynthesis, glycolysis gluconeogenesis, and glycerolipid metabolism. The identification of physiological and genetic regulation of strains from different environmental regions contributes to the selection of microalgae with high lipid accumulation.
MICROBIOLOGY SPECTRUM
(2022)
Article
Plant Sciences
Vasiliy V. Nokhsorov, Svetlana V. Senik, Valentina E. Sofronova, Ekaterina R. Kotlova, Alexander D. Misharev, Nadezhda K. Chirikova, Lyubov V. Dudareva
Summary: Lipids are important components of cell membranes and their composition can change in response to environmental stresses. This study investigated the seasonal dynamics of membrane lipids in the shoots of Ephedra monosperma growing in permafrost ecosystems. The results suggest that lipid metabolism plays a crucial role in the adaptation and survival of E. monosperma in extreme conditions.
Article
Oceanography
M. S. Mamaev, S. A. Murzina, V. P. Voronin, D. I. Litovka, V. V. Rozhnov
Summary: This study investigated the composition of lipids in different tissues of gray whales and compared the lipid profiles of tissues with different functional loads. The results showed significant variations in the content and composition of lipids among different tissues. The study also discussed the relationship between the qualitative and quantitative composition of lipids and tissue function.
Article
Biology
Tripti Sharma, Joydip Mukherjee, Pradip Kumar Das, Probal Ranjan Ghosh, Kinsuk Das, Syamal Naskar, Santanu Bera, Apratim Maity, Subhasis Batabyal, Dipak Banerjee
Summary: The physiological functions of black Bengal goats from coastal regions were compared to those from plains, and it was found that the goats from coastal areas showed higher electrolyte levels and cortisol concentrations. However, the salinity of feed, soil, and water did not significantly affect the homeostasis of these goats, indicating their adaptability to saline coastal environments.
BIOLOGICAL RHYTHM RESEARCH
(2023)
Article
Plant Sciences
Maja Diljkan, Sinisa Skondric, Dino Hasanagic, Mirjana Zabic, Ljiljana Topalic-Trivunovic, Carlos Raul Jimenez-Gallardo, Biljana Kukavica
Summary: The study investigates the impact of seasonal variations on oxidative and antioxidant parameters in ivy leaves, showing an increase in parameter values during winter to early spring and a decrease during spring, summer, and autumn. A peak in parameter values was detected in June and July 2018, likely due to changes in light intensity and temperature, as well as intense shoot growth.
Article
Biochemistry & Molecular Biology
Trang Hoang, ChanSu Jeong, Sei-Heon Jang, ChangWoo Lee
Summary: This study analyzed the structure of a Fe-S binding class II glutaredoxin 4 (SpGrx4) and found that three polar residues form a hydrogen bond network with the cis-proline residue, which plays a crucial role in the stability and flexibility of the protein.
Article
Public, Environmental & Occupational Health
Ariana L. Johnson, Kyle J. Self, Cho-Hee Shrader, Edda Rodriguez, Mariano Kanamori
Summary: This study identified distinct classes of polydrug use among male Latino seasonal workers in South Florida and explored the demographic, structural, and psychological factors associated with each class. The findings suggest the presence of heterogeneity in polydrug use among this population.
JOURNAL OF AGROMEDICINE
(2023)
Article
Sport Sciences
V. V. Gorelik, S. N. Filippova, E. Lunkova, V. S. Belyaev
Summary: The study aimed to optimize the functional state of boys with different types of autonomic regulation through typologically determined training activities. Special exercises helped redistribute students to a more balanced type, improving the effectiveness of PE classes at school.
HUMAN SPORT MEDICINE
(2021)
Article
Biology
Julius Akolawole Bamidele, Adewumi Babatunde Idowu, Kehinde Olutoyin Ademolu, Adedoyin Adebola Osipitan, Samson Adisa Rahman
Summary: This study evaluated the seasonal fluctuations of antioxidant activities and biochemical compositions of honeybees in different ecological zones of Nigeria. The results showed that the amino acid composition was higher in honeybees from the rainforest zone and the wet season had higher levels of superoxide dismutase and body protein. The study also found that seasonal periods did not significantly influence factors such as body glucose, protein pattern, and total cholesterol.
JOURNAL OF BASIC AND APPLIED ZOOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Morgane Leon, Pieter van Beek, Virginie Sanial, Marc Souhaut, Paul Henderson, Matthew A. Charette
Summary: The analysis of radium and actinium isotopes in seawater requires the collection of large volumes of water and the use of high sensitivity instruments. To concentrate these isotopes, filters impregnated with MnO2 are typically used. However, the extraction efficiency of these filters for the target isotopes needs to be determined.