Article
Environmental Sciences
Zhiguang Xu, Lingxue Li, Huichao Jiang, Fang Yan, Lijuan Liu, Shasha Zang, Yuanqing Ma, Hongyan Wu
Summary: This study investigated the photosynthetic responses of golden tide algae to UV radiation (UVR). The results showed that UVR exposure decreased photosynthetic activity, but the algae also adopted various strategies to protect themselves from UVR damage and gradually recovered their photosynthetic activity during low light recovery.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Menglin Bao, Ji-Sook Park, Hailong Wu, Hyuk Je Lee, Sang Rul Park, Tae-Hoon Kim, Young Baek Son, Tae Hee Lee, Charles Yarish, Jang K. Kim
Summary: Large-scale Sargassum blooms, particularly the Sargassum horneri (Turner) C. Agardh blooms, have been causing serious problems in coastal areas. The attached populations showed higher biomass accumulation under high nutrients and low PAR, while nutrient limitation and high PAR may accelerate senescence of the pelagic populations.
MARINE ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Vanessa Russnak, Mauricio Rodriguez-Lanetty, Ulf Karsten
Summary: The study found significant differences in photosynthetic performance and tolerance among different genetic types of Symbiodiniaceae, but most exhibited broad thermal tolerance, enabling them to adapt to temperature fluctuations in tropical regions.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Engineering, Marine
Tingjian Wu, Lihua Xia, Minmin Zhuang, Jiayu Pan, Jinlin Liu, Wei Dai, Zitao Zhao, Meijing Zhang, Xiyu Shen, Peimin He, Jianheng Zhang, Yutao Qin
Summary: With global warming, golden tides have become frequent off the coasts of China in recent years. This study examines the effects of global warming on the growth and proliferation of Sargassum horneri in the mussel aquaculture area of Gouqi Island. The relationship between algal growth and temperature is analyzed based on the concept of effective accumulated temperature and parameters such as sea surface temperature and growth cycle. The findings suggest that temperature plays a crucial role in the outbreak and extinction of golden tides, and a monitoring system based on winter sea surface temperature changes can be established for early warning.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Agricultural Engineering
Minghe Cao, Libo Peng, Qinglong Xie, Kainan Xing, Meizhen Lu, Jianbing Ji
Summary: The solid acid catalyst prepared by sulfonated Sargassum horneri carbon efficiently catalyzes the esterification reaction of oleic acid and methanol for biodiesel preparation. By optimizing the conditions, the conversion rate of oleic acid can reach 96.4%, and the catalyst can still maintain a high conversion rate after four cycles of use.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Minmin Zhuang, Jinlin Liu, Xiaowei Ding, Jianzong He, Shuang Zhao, Lingjuan Wu, Song Gao, Chunyan Zhao, Dongyan Liu, Jianheng Zhang, Peimin He
Summary: Research showed that the Sargassum horneri from the East China Sea was responsible for the blooms in the Yellow Sea. The genetic diversity among the three regions was very low, possibly due to the widespread dispersal of the algae.
MARINE POLLUTION BULLETIN
(2021)
Article
Limnology
Jingjing Li, Yunlong Pang, Song Qin, Zhengyi Liu, Zhihai Zhong, Wanlin Song, Longchuan Zhuang
Summary: The study revealed that S. horneri has a strong acclimation potential to the sea surface environment, showing higher photosynthetic rate and photoprotective ability under high light intensity conditions.
JOURNAL OF OCEANOLOGY AND LIMNOLOGY
(2022)
Article
Engineering, Marine
Hailong Wu, Xuebing Li, Yanhong Liu, Chuchu Wang, Chenkai Ji, Juntian Xu
Summary: The response of Sargassum horneri to global warming and eutrophication was investigated. Elevated temperatures and eutrophication inhibited the growth and photosynthesis of S. horneri. It is suggested that future global warming and eutrophication may reduce the frequency and scale of gold tide outbreaks.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Agricultural Engineering
Peng Zhang, Min-Chong Shen, Xin-Yue Zhang, Hai-Ying Wang, Zhi-Peng Wang
Summary: In this study, the combined use of 3% alginate lyase and 3% cellulose in a 1:6 feed ratio resulted in the maximum saccharification yield of Sargassum horneri biomass, producing 20.83 g/L glucose and 1.73 g/L mannitol. The crude S. horneri hydrolysate (pH 3.0) was found to be suitable for erythritol production by Yarrowia lipolytica strain, achieving a concentration of 18.42 g/L and a yield of 0.82 g/g after fermentation in a 10-L fermenter for 60 hours. The proposed strategy demonstrates the feasibility of converting invasive Sargassum into high-value chemicals for the first time.
BIORESOURCE TECHNOLOGY
(2023)
Article
Food Science & Technology
Min-Cheol Kang, Hyo Geun Lee, Sang Hoon Lee, Kyung-Mo Song, Hyun-Soo Kim, Sera Kim, Yun-Sang Choi, You-Jin Jeon
Summary: This study found that the ethanol extract of Sargassum horneri (SH) can reduce body weight and fat accumulation in high-fat diet-induced obese mice, and positively affect the expression of mitochondrial uncoupling protein 1 and mitochondrial uncoupling protein 3 in brown adipose tissue. Additionally, serum triglyceride, cholesterol, and leptin levels were significantly decreased in mice administered SH.
JOURNAL OF FUNCTIONAL FOODS
(2022)
Article
Biochemistry & Molecular Biology
Inhye Park, Jiwoo Kim, Minji Kim, Dong Wook Lim, Jonghoon Jung, Min Jung Kim, Junho Song, Suengmok Cho, Min Young Um
Summary: This study found that the ethanol extract of Sargassum horneri has antidepressant effects by regulating the hypothalamic-pituitary-adrenal axis and monoaminergic pathway, as well as activating the ERK-CREB-BDNF signaling pathway in the prefrontal cortex and hippocampus.
Article
Biochemistry & Molecular Biology
Lei Wang, Hyun-Soo Kim, Jun-Geon Je, Xiaoting Fu, Caoxing Huang, Ginnae Ahn, Jae-Young Oh, K. K. Asanka Sanjeewa, Jiachao Xu, Xin Gao, In-Kyu Yeo, You-Jin Jeon
Summary: (-)-loliode, a compound isolated from the brown seaweed Sargassum horneri, has strong antioxidant and anti-inflammatory activities, showing significant photoprotective effects in skin cells in vitro and in zebrafish in vivo. This suggests that (-)-loliode may be an ideal ingredient in pharmaceutical and cosmeceutical industries for skin damage protection.
Article
Multidisciplinary Sciences
Eui Jeong Han, Seo-Young Kim, Hee-Jin Han, Hyun-Soo Kim, Kil-Nam Kim, Ilekuttige Priyan Shanura Fernando, Disanayake Mudiyanselage Dinesh Madusanka, Mawalle Kankanamge Hasitha Madhawa Dias, Sun Hee Cheong, Sang Rul Park, Young Seok Han, Kyounghoon Lee, Ginnae Ahn
Summary: The methanol extract of Sargassum horneri showed protective effects against UVB-induced cellular damage in human keratinocytes by reducing intracellular ROS generation, inhibiting apoptosis, and modulating the expression of anti- and pro-apoptotic molecules. The extract also restored skin dryness and barrier disruption in UVB-exposed cells through the Nrf2/HO-1/NF-kappa B p65 signaling pathway. These findings suggest that Sargassum horneri extract may be useful for preventing UVB-induced skin damage.
SCIENTIFIC REPORTS
(2021)
Article
Biotechnology & Applied Microbiology
Momoko Tamura, Satoshi Shimizu, Hiroshi Nagai, Orie Yoshinari, Naoko Hamada-Sato
Summary: Sargassum horneri, a seaweed with antihypertensive properties, can be enhanced through fermentation with lactic acid bacteria. The fermented S. horneri showed strong antihypertensive effects, possibly due to the presence of glycerol. This study provides a new method for the effective utilization of S. horneri.
FERMENTATION-BASEL
(2022)
Article
Chemistry, Medicinal
D. P. Nagahawatta, Hyun-Soo Kim, Young-Heun Jee, Thilina U. Jayawardena, Ginnae Ahn, Jin Namgung, In-Kyu Yeo, K. K. Asanka Sanjeewa, You-Jin Jeon
Summary: This study evaluated the anti-inflammatory mechanism of Sargachromenol isolated from Sargassum horneri against particulate matter-stimulated macrophages. The results demonstrated that Sargachromenol significantly reduced the secretion of proinflammatory cytokines induced by particulate matter by blocking the activation of TLR-mediated NF-κB and MAPKs signaling pathways, suggesting its potential application in various innovative fields.
Article
Multidisciplinary Sciences
Matthew Edwards, Brenda Konar, Ju-Hyoung Kim, Scott Gabara, Genoa Sullaway, Tristin McHugh, Michael Spector, Sadie Small
Article
Plant Sciences
Ju-Hyoung Kim, Diana L. Steller, Matthew S. Edwards
Summary: The study showed that physical disturbance from boat moorings negatively impacts the photosynthetic efficiency of rhodoliths, with a more pronounced effect on smaller individuals. Crushing rhodoliths leads to decreased gross productivity, net productivity, and respiration, with significant differences in photosynthesis and respiration across rhodolith sizes.
JOURNAL OF PHYCOLOGY
(2021)
Article
Multidisciplinary Sciences
Matthew S. Edwards, Brenda Konar
SCIENTIFIC REPORTS
(2020)
Article
Marine & Freshwater Biology
Dillon Dolinar, Diana Steller, Scott Gabara, Billie Beckley, Ju-Hyoung Kim, Matthew Edwards
Article
Ecology
Scott S. Gabara, Brenda H. Konar, Matthew S. Edwards
Summary: This study compared the effects of biodiversity loss on trophic complexity in food webs using ecosystems in the Aleutian Archipelago. The findings indicate that biodiversity loss leads to reductions in trophic complexity, similar to naturally occurring communities with low local resource biodiversity.
Article
Oceanography
Monica M. Tydlaska, Matthew S. Edwards
Summary: Human actions, particularly visitor behaviors such as trampling and harvesting, have negative impacts on rocky intertidal ecosystems worldwide. The protection of these ecosystems in San Diego County, USA, through Marine Protected Areas (MPAs), faces challenges due to lack of public knowledge and inadequate on-site information.
OCEAN & COASTAL MANAGEMENT
(2022)
Article
Plant Sciences
Brooke L. Weigel, Sadie L. Small, Helen D. Berry, Megan N. Dethier
Summary: Warming ocean temperatures and low nutrient concentrations have led to declines in bull kelp populations in the Salish Sea. In laboratory experiments, high temperatures had a more negative impact on microscopic stages of bull kelp compared to low nitrogen levels. Gametophytes were most abundant between 10 and 16℃, while sporophyte production peaked at 10-14℃. Field observations confirmed that the thermal limits for gametophyte growth (18℃) and sporophyte production (16-18℃) were reached during the summer. Caution should be taken to prevent prolonged exposure of bull kelp gametophytes to temperatures above 16℃, as it could limit reproduction and recruitment of adult sporophytes.
JOURNAL OF PHYCOLOGY
(2023)
Article
Marine & Freshwater Biology
Scott S. Gabara, Benjamin P. Weitzman, Brenda H. Konar, Matthew S. Edwards