New article: Gayralia kuroshiensis (Ulvophyceae), from Fukushima, Japan

Congratulations to Dr. Koja and the distinguished co-authors on their interesting article on the ecophysiology of the cultivated green alga Gayralia kuroshiensis from Fukushima, Japan. From the Marine Botany Laboratory, Professor Ryuta Terada, the head of the laboratory, participated in this project and conducted part of the photosynthetic experiments.

Koja, Sato, Nishihara, Terada 2026. The effects of four environmental stressors, temperature, irradiance, desiccation, and salinity on the photosynthesis of a cultivated green alga, Gayralia kuroshiensis (Ulvophyceae), from Fukushima, Japan. Algal Research 96: Article 104664
DOI: 10.1016/j.algal.2026.104664

https://www.sciencedirect.com/science/article/pii/S2211926426001499

 

 

New article: Significant changes in seaweed community structure revealed by a nationwide long-term monitoring survey in Japan “Monitoring-Site 1000” over the past 15 years (2008–2022)

Please take a look at our new review article on the nationwide long-term monitoring program in Japan, “Monitoring-Site 1000,” which summarizes 15 years of surveys (2008–2022) and reveals significant changes in seaweed community structure, including the disappearance of kelp forests. Since the article is open access, anyone can download it from the website. The website also provides extensive supplementary materials, including many beautiful underwater photos taken during the surveys—please don’t miss them.

 

R. Terada, T. Abe, S. Akita, M. Kamiya, H. Kawai, A. Kurashima, C. Nagasato, Y. Sakanishi, H. Shimabukuro, H. Suzuki, J. Tanaka, S. Uwai, Y. Watanabe, R. Ueno, M. Aoki 2026. Significant changes in seaweed community structure revealed by a nationwide long-term monitoring survey in Japan “Monitoring-Site 1000” over the past 15 years (2008–2022).

Phycological Research 74 (1): 39–56 

 

https://doi.org/10.1111/pre.70019 (Online: 8 December 2025; Issue: January 2026)

https://onlinelibrary.wiley.com/doi/10.1111/pre.70019

https://doi.org/10.1111/pre.70019

 

New article: First record of Ulva kanagawae from Ogasawara Islands, Japan

Please take a look at our new article reporting the first record of Ulva kanagawae V. Carneiro, N. T. Martins & Cassano from Chichi-jima in the Ogasawara (Bonin) Islands, Japan. This alga was described as a new species in 2023, but the type locality was São Paulo, Brazil. Our finding represents the first record of this species from the Pacific Ocean. Because the biogeographic connection between Ogasawara and São Paulo remains unclear, we are very excited to see future records that may further clarify the distribution of this alga.

Kitayama, Suzuki, Terada 2025.
First record of Ulva kanagawae V.Carneiro, N.T.Martins & Cassano (Ulvales, Chlorophyta) from Japan.
Bulletin of the National Museum of Nature and Science. Series B, Botany 51 (4): 127–135
DOI: 10.50826/bnmnsbot.51.4_127

https://www.jstage.jst.go.jp/article/bnmnsbot/51/4/51_127/_article/-char/ja

Congratulations to Dr. Taiju Kitayama, National Museum of Nature and Science, on his great work!  

New article: Japanese Dictyoteae (Dictyotales) with new records and biogeographic insights.

Please take a look at our new article on the reassessment of the taxonomic status of Dictyoteae algae from Japan. Congratulations to Dr. Christophe Vieira on this excellent work!

Christophe Vieira, Shingo Akita, Masahiro Suzuki, Ryuta Terada, Takeaki Hanyuda, Satoshi Shimada, Shinya Uwai. Hiroshi Kawai 2025.

A taxonomic sudoku: Resolving the long-standing puzzle of Japanese Dictyoteae (Dictyotales, Phaeophyceae) with new records and biogeographic insights. 

 

Journal of Phycology 61: 1457-1485

 

DOI: 10.1111/jpy.70084

https://onlinelibrary.wiley.com/doi/10.1111/jpy.70084

  

Dictyota haenyeosa

New article: Ryuguphycus kuaweuweu

Please take a look at our new article on the effects of desiccation and salinity gradients on the photochemical efficiency of a mesophotic green alga, Ryuguphycus kuaweuweu.

Terada, Shindo, Moriyama, Shimboku, Nishihara 2025

The effects of desiccation and salinity gradients in the photochemical efficiency of a mesophotic green alga, Ryuguphycus kuaweuweu (Ulvaceae) from Kagoshima, Japan. Phycological Research

https://doi.org/10.1111/pre.70010

https://onlinelibrary.wiley.com/doi/10.1111/pre.70010

 

Ryuguphycus kuaweuweu

 

New article: Solieria latifolia sp. nov. and S. yoshidae sp. nov. (Solieriaceae, Rhodophyta) from offshore Tanegashima Island

Please take a look at our new article on two newly discovered species of the genus Solieria from offshore Tanegashima Island. It was published on May 12, 2025, in Phycologia, the official journal of the International Phycological Society.

Suzuki, Zemba, & Terada. 2025. Solieria latifolia sp. nov. and S. yoshidae sp. nov. (Solieriaceae, Rhodophyta) from offshore Tanegashima Island, Japan. Phycologia, 64. DOI:10.1080/00318884.2025.2494493
https://www.tandfonline.com/doi/full/10.1080/00318884.2025.2494493
 

In recent years, we have focused on species diversity and environmental adaptations in Mesophotic Coral Ecosystems (MCEs—ecosystems found at depths greater than 30 m) around offshore Tanegashima Island, and have published a series of related articles. The species name Solieria yoshidae was dedicated to the late Dr. Tadao Yoshida (1933–2024), Professor Emeritus of Hokkaido University, who was a specialist in the taxonomy of Solieria.

https://www.kagoshima-u.ac.jp/topics/2025/05/post-2326.html

MB Laboratory Seminar

We had an MB Laboratory seminar at the beginning of the spring semester. As it was the first seminar of the term, Dr. Terada and Endo presented their recent research topics. The seminar will be held every two weeks until September, during which students will present their progress reports and introduce recently published articles.

 

 

Special Exhibition at Kagoshima City Aquarium: The World of Marine Algae

As the opening event of the special exhibition The World of Marine Algae, a workshop on making marine algae herbarium specimens was held at Kagoshima City Aquarium in Kagoshima. Twelve elementary and junior high school students attended. The students created herbarium specimens of twenty-four species of marine algae collected from various locations in Kagoshima Prefecture.

 

 

 

 

 

論文：分布南限の褐藻アントクメ：消失したと思われていた鹿児島県馬毛島沖での再確認

研究室の新しい論文が植物研究雑誌より刊行されました。

 

寺田竜太 2024．分布南限の褐藻アントクメ：消失したと思われていた鹿児島県馬毛島沖での再確認．

植物研究雑誌99 (4): 273–279

DOI: 10.51033/jjapbot.ID0211（刊行日：2024年8月20日）

 

Ryuta Terada 2024. A brown alga, Ecklonia radicosa at the southernmost distributional limit in Japan: Reconfirmation of Ecklonia radicosa from Mageshima Island, Kagoshima, the southernmost distributional limit in Japan. 

The Journal of Japanese Botany 99 (4): 273–279

DOI: 10.51033/jjapbot.ID0211 (Issue: 20 August 2024)

 

https://www.jstage.jst.go.jp/article/jjapbot/99/4/99_ID0211/_article/-char/ja

 

褐藻アントクメEcklonia radicosa（コンブ目）の標本や記録における分布南限は，種子島の西方に位置する馬毛島沖ですが，1971年の標本以降生育が確認されないままでいました。本種は馬毛島周辺海域から消失した可能性が考えられてきましたが，2023年10月7日の調査航海で実施したドレッジ調査において，本種の生育が改めて確認されました。

 

植物研究雑誌の論文のダウンロードは，刊行から2年間は雑誌購読者に限られています（2年以上を経たものはオープンアクセス）。論文に関心のある方は，お気軽に我々にお問い合わせください。なお，植物研究雑誌は2025年の刊行100周年に併せ，電子媒体のみによる完全オープンアクセスに移行するそうです。

New article: Chondria armata

Please check out our new article featuring the phenology and the response of photosynthesis to irradiance and temperature gradients in the herbal drug red alga, Chondria armata (Rhodomelaceae, Ceramiales).

https://link.springer.com/article/10.1007/s10811-024-03250-w

 

Terada, Yoshizato, Murakami, Nishihara 2024. Phenology and the response of photosynthesis to irradiance and temperature gradient in the herbal drug red alga, Chondria armata (Rhodomelaceae, Ceramiales) from Kagoshima, Japan.

Journal of Applied Phycology

DOI: 10.1007/s10811-024-03250-w

 

This alga has been utilized by local inhabitants for many years in the Ryukyu Islands, serving as an herbal drug for anthelmintic purposes, effectively eradicating various intestinal worms such as parasitic roundworms, whipworms, and tapeworms. 

 

In the present study, we conducted a seasonal field survey to elucidate the seasonal variations of this alga in Kagoshima, Japan. Additionally, we conducted experiments to analyze the photosynthetic response of C. armata under varying temperature and irradiance gradients. This endeavor aims to enhance our understanding of the optimal and critical environmental conditions for this alga near the northern distributional limit in the Pacific.

 

Chondria armata

 

New article: Caulerpa chemnitzia var. laetevirens

Introducing a new article that explores the optimization of cultivation and shipping environments for an edible green alga, Caulerpa chemnitzia var. laetevirens from Japan.

https://onlinelibrary.wiley.com/doi/full/10.1111/pre.12539

 

Terada, Matsuda, Nishihara 2024. Optimizing cultivation and shipping environments for an edible green alga, Caulerpa chemnitzia var. laetevirens (Bryopsidales) from Japan: Effects of temperature, irradiance, desiccation and salinity on photochemical efficiency. 

Phycological Research 72 (1): Online

DOI: 10.1111/PRE.12539

Caulerpa chemnitzia var. laetevirens

Harvested Caulerpa chemnitzia var. laetevirens

 

Annual research achievement 2023

This is an annual research achievement from the 2023 Marine Botany Laboratory at Kagoshima University. As we reflect on the year, we would like to express our gratitude to all the students, colleagues, co-authors, and contributors. Thank you for a great year.

Articles

1. Yukiko Yonemori, Shogo Kokubu, Gregory N. Nishihara, Hikaru Endo, Ryuta Terada 2023. The effects of desiccation and salinity gradients in the PSII photochemical efficiency of an intertidal brown alga, Sargassum fusiforme from Kagoshima, Japan. Phycological Research 71: 3–12 https://doi.org/10.1111/PRE.12491 (3 January 2023) 

 

2. Tomohiro Ito, Toui Yoshioka, Hiromori Shimabukuro, Gregory N. Nishihara, Hikaru Endo, Ryuta Terada 2023. The effect of temperature, light-spectrum, desiccation, and salinity gradients on the photosynthetic performance of a subtidal brown alga, Sargassum macrocarpum from Japan. Phycological Research 71: 25–36 https://doi.org/10.1111/pre.12508 (3 January 2023)

 

3. Hikaru Endo, Hikari Moriyama, Yutaka Okumura 2023. Photoinhibition and photoprotective responses of a brown marine macroalga acclimated to different light and nutrient regimes. Antioxidants 12: 357 https://doi.org/10.3390/antiox12020357 (2 February 2023)

 

4. Yoichi Sato, Takayuki Fujiwara, Hikaru Endo 2023. Density regulation of aquaculture production and its effects on commercial profit and quality as food in the cosmopolitan edible seaweed Undaria pinnatifida. Frontiers in Marine Science 10: 1085054 https://doi.org/10.3389/fmars.2023.1085054 (10 February 2023)

 

5. 島田菜摘，Gregory N. Nishihara，寺田竜太．2023．奄美大島産ウミジグサHalodule uninervisの光合成における温度や光の影響．日本水産学会誌89: 115–126 https://doi.org/10.2331/suisan.22-00035 （3月15日）．Natsumi Shimada, Gregory N. Nishihara, Ryuta Terada. 2023. The effect of temperature and irradiance on the photosynthesis of a seagrass, Halodule uninervis from Amami-Oshima Island, Kagoshima. Nippon Suisan Gakkaishi 89: 115–126 https://doi.org/10.2331/suisan.22-00035 (15 March 2023)

 

6. 豊田（小谷野）有加，広瀬雅人，中野智之，小松浩典，寺田竜太，豊福高志，長井裕季子，今井仁，小山田佑輔，向哲嗣，川口大朗，高嶺春夫，港隆一，森英章，三宅裕志2023．西之島の海洋生物相の速報．小笠原研究49: 113–168, https://ogasawara.fpark.tmu.ac.jp/pdf/No49/OgasawaraResearchNo.49_113-168.pdf（2023年3月）. Yuka Toyoya (Koyano), Masato Hirose, Tomoyuki Nakano, Hironori Komatsu, Ryuta Terada, Takashi Toyofuku, Yukiko Nagai, Hitoshi Imai, Yusuke Oyamada, Akitsugu Mukai, Dairou Kawaguchi, Ryuichi Minato, Hideaki Mori, Hiroshi Miyake 2023. Preliminary report of marine macrofauna of Nishinoshima Island. Ogasawara Research 49: 113–168, https://ogasawara.fpark.tmu.ac.jp/pdf/No49/OgasawaraResearchNo.49_113-168.pdf (March 2023)

 

7. Ryuta Terada, Aoi Shindo, Hikari Moriyama, Narumi Shimboku, Gregory N. Nishihara 2023. The response of photosynthesis to temperature and irradiance in a green alga, Ryuguphycus kuaweuweu (Ulvales) reveals adaptation to a subtidal environment in the northern Ryukyu Islands. Algal Research 74: Article 103189, https://doi.org/10.1016/j.algal.2023.103189 (29 June 2023)

 

8. Ryuta Terada, Rumina Nakamura, Takuya Iwanaga, Keita Nakahara, Gregory N. Nishihara 2023. The real-time measurements of PSII photochemical efficiency in the microscopic sporophyte of Pyropia yezoensis f. narawaensis (Bangiaceae) reveals the low capacity of desiccation tolerance that drops within a few minutes of dehydration. Algal Research 75: 103283, https://doi.org/10.1016/j.algal.2023.103283 (4 October 2023)

 

9. 新北成実，寺田竜太．2023．鹿児島湾のアマモ場：2021年の分布状況と長期的な衰退．日本水産学会誌89: 510–520 https://doi.org/10.2331/suisan.23-00020 （2023年11月15日）．Narumi Shimboku, Ryuta Terada. 2023. Seagrass bed in Kagoshima Bay: The distribution status in 2021 and long-term decline. Nippon Suisan Gakkaishi 89: 510–520 https://doi.org/10.2331/suisan.23-00020 (15 November 2023)

 

10. 中村瑠美奈，岩永卓也，中原啓太，住吉大，寺田竜太．2023．ノリ養殖採苗日の延期に伴って行われる殻胞子放出抑制処理がカキ殻糸状体の光合成光化学効率に及ぼす影響．日本水産学会誌89: 521–528 https://doi.org/10.2331/suisan.23-00024 （2023年11月15日）. Rumina Nakamura, Takuya Iwanaga, Keita Nakahara, Dai Sumiyoshi, Ryuta Terada 2023. The effect of photochemical efficiency in cultivated Pyropia sporophytes under the conchospore-release suppression treatment resulting from postponed seeding date. Nippon Suisan Gakkaishi 89: 521–528 https://doi.org/10.2331/suisan.23-00024 (15 November 2023)

 

11. Ryuta Terada, Koki Matsuda, Gregory N. Nishihara. 2024. Optimizing cultivation and shipping environments for an edible green alga, Caulerpa chemnitzia var. laetevirens (Bryopsidales) from Japan: Effects of temperature, irradiance, desiccation, and salinity on photochemical efficiency. Phycological Research (In press)

 

Journal Cover

1. Phycological Research 71 (1) January 2023. https://doi.org/10.1111/pre.12492

 

Others

1. 寺田竜太．2023．鹿児島大学における「ひらめき☆ときめきサイエンス」の海藻押し葉講座：10年間の軌跡．藻類71: 103–105.（2023年7月10日）

 

Award

1. 牧野虎太郎．2023．日本藻類学会第47回大会学生発表賞．ポスター発表大形藻の部．日本藻類学会（2023年3月22日）

New article: Density regulation of aquaculture production and its effects on commercial profit and quality as food in the cosmopolitan edible seaweed Undaria pinnatifida

Please take a look at our new article, which discusses the regulation of aquaculture production density and its impact on commercial profitability and food quality of the cosmopolitan edible seaweed, Undaria pinnatifida.

Yoichi Sato, Takayuki Fujiwara, Hikaru Endo 2023. Density regulation of aquaculture production and its effects on commercial profit and quality as food in the cosmopolitan edible seaweed Undaria pinnatifida. Frontiers in Marine Science 10: 1085054 DOI: 10.3389/fmars.2023.1085054

https://www.frontiersin.org/articles/10.3389/fmars.2023.1085054/full

 

論文：奄美大島産海草，ウミジグサの論文

奄美大島産のウミジグサの生理生態に関する論文が出ました。

島田菜摘，Gregory N. Nishihara，寺田竜太．2023．奄美大島産ウミジグサHalodule uninervisの光合成における温度や光の影響．日本水産学会誌89 (2): DOI: 10.2331/suisan.22-00035（早期公開：2023年2月22日）．

 

Natsumi Shimada, Gregory N. Nishihara, Ryuta Terada. 2023. The effect of temperature and irradiance on the photosynthesis of a seagrass, Halodule uninervis from Amami-Oshima Island, Kagoshima. Nippon Suisan Gakkaishi 89 (2): DOI: 10.2331/suisan.22-00035 (Online: 22 February 2023)

https://www.jstage.jst.go.jp/article/suisan/advpub/0/advpub_22-00035/_article/-char/ja

ウミジグサ　Halodule uninervis

論文：海草ウミショウブEnhalus acoroidesの光合成活性の日周変化

熱帯性の海産顕花植物であるウミショウブEnhalus acoroidesの光合成活性の日周変化を測定した論文が出ました。

島田菜摘，Gregory N. Nishihara，寺田竜太．2022．自然光下の測定によるウミショウブの光合成光化学効率の日変化．水産増殖70 (3): 277–280

Natsumi Shimada, Gregory N. Nishihara, Ryuta Terada. 2022. Diurnal change of the photochemical efficiency in a seagrass, Enhalus acoroides, based on the measurement under incident sunlight. Aquaculture Science 70 (3): 277–280

https://researchmap.jp/ryuta-terada/published_papers/41188424

Enhalus acoroides

New article: Sargassum macrocarpum

Our new and last article in 2022 was out online. Please check out the following article featuring “the effect of temperature, light-spectrum, desiccation, and salinity gradients on the photosynthetic performance of a subtidal brown alga, Sargassum macrocarpum from Japan.

Ito, Yoshioka, Shimabukuro, Nishihara, Endo, Terada 2023. The effect of temperature, light-spectrum, desiccation, and salinity gradients on the photosynthetic performance of a subtidal brown alga, Sargassum macrocarpum from Japan. Phycological Research DOI: 10.1111/pre.12508

https://onlinelibrary.wiley.com/doi/full/10.1111/pre.12508

Sargassum macrocarpum

Annual Contribution 2022

This is an annual contribution of the 2022 Marine Botany Lab, Kagoshima University. We would like to express our gratitude to all of the students, colleagues, co-authors, and contributors. Thanks for a great year.

Articles
1. Yoichi Sato, Daisuke Saito, Gregory N. Nishihara, Ryuta Terada 2022. Effects of different stressors on the PSII photochemical efficiency and application to sporeling transportation in cultured young sporophytes of Undaria pinnatifida. Journal of Applied Phycology 34 (1): 551–563 DOI: 10.1007/s10811-021-02616-8 (Online: 28 October 2021: Issue: February 2022)

2. 倉堀宇弘，島袋寛盛，猪狩忠光，寺田竜太2022．鹿児島湾産褐藻ホンダワラ属藻類2種，イソモクとコナフキモクの季節的消長と生育環境．日本水産学会誌 88 (1): 12–19 DOI: 10.2331/suisan.21-00028（早期公開：2021年11月26日；冊子体2022年1月15日）．Takahiro Kurahori, Hiromori Shimabukuro, Ryuta Terada 2022. Phenology and environmental characteristics of two species of Sargassum (Fucales), S. hemiphyllum and S. glaucescens from Kagoshima Bay, Japan. Nippon Suisan Gakkaishi 88 (1): 12–19 DOI: 10.2331/suisan.21-00028 (Online: 26 November 2021; Issue: 15 January 2022).

3. Hikaru Endo, Xu Gao 2022. A new classification tool and a systematic review of macroalgal studies disentangle the complex interactive effects of warming and nutrient enrichment on primary production. Frontiers in Marine Science 9: Article 774801 DOI: 10.3389/fmars.2022.774801 (Online: 2 February 2022)

4. Taylor S. Steele, John K. Brunson, Yukari Maeno, Ryuta Terada, Andrew E. Allen, Mari Yotsu-Yamashita, Jonathan R. Chekan, Bradley S. Moore 2022. Domoic acid biosynthesis in the red alga Chondria armata suggests a complex evolutionary history for toxin production. Proceedings of the National Academy of Sciences of the United States of America 119 (6): e2117407119 DOI: 10.1073/pnas.2117407119 (Online: 8 February 2022)

5.  Harshna Charan, Eri Inomata, Hikaru Endo, Yoichi Sato, Yutaka Okumura, Masakazu N. Aoki 2022. Decreased irradiance and nutrient enrichment mitigate the negative effect of ocean warming on growth and biochemical compositions of a canopy-forming marine macroalga. Journal of Marine Science and Engineering 10 (4): 479 DOI: 10.3390/jmse10040479 (Online: 30 March 2022)

6. Aoi Shindo, Gregory N. Nishihara, Iris Ann Borlongan, Ryuta Terada 2022. The effects of desiccation and salinity gradients in the photochemical efficiency of a subtidal brown alga, Saccharina japonica (Laminariales) from Hokkaido, Japan. Phycological Research 70 (2): 89–96 DOI: 10.1111/pre.12481 (Online: 28 February 2022; Issue: 6 April 2022)

7. Yoichi Sato, Gregory N. Nishihara, Atsuko Tanaka, Dominic F. C. Belleza, Azusa Kawate, Yukio Inoue, Kenjiro Hinode, Yuhei Matsuda, Shinichiro Tanimae, Kandai Tosaki, Ryuta Terada, Hikaru Endo 2022. Variability in the net ecosystem productivity (NEP) of seaweed farms. Frontiers in Marine Science, Section Global Change and the Future Ocean 9: 861932 DOI: 10.3389/fmars.2022.861932 (Online: 24 May 2022)

8. Clyde Gorapava Puilingi, Suh Nih Tan, Yukari Maeno, Chui Pin Leaw, Po Teen Lim, Mari Yotsu-Yamashita, Ryuta Terada, Yuichi Kotaki 2022. First record of the diatom Nitzschia navis-varingica (Bacillariophyceae) producing amnesic shellfish poisoning-toxins from Papua New Guinea. Toxicon 216: 65–72 DOI: 10.1016/j.toxicon.2022.06.016 (Online: 2 July 2022; Issue: September 2022)

9. Aoi Shindo, Iris Ann Borlongan, Gregory N. Nishihara, Ryuta Terada 2022. Interactive effects of temperature and irradiance including spectral light quality on the photosynthesis of a brown alga Saccharina japonica (Laminariales) from Hokkaido, Japan. Algal Research Article 66: 102777 DOI: 10.1016/j.algal.2022.102777 (Online: 4 July 2022)

10. 島田菜摘，畳谷伊織，Gregory N. Nishihara，寺田竜太．2022．鹿児島産一年生アマモZostera marina実生の光合成に対する温度や光の影響．日本水産学会誌88 (6): 472–484  DOI: 10.2331/suisan.22-00011（早期公開：2022年11月11日；冊子体：2022年12月2日）．Natsumi Shimada, Iori Tatamidai, Gregory N. Nishihara, Ryuta Terada. 2022. The effect of temperature and light on the photosynthesis of annual Zostera marina seedlings from Kagoshima, Japan. Nippon Suisan Gakkaishi 88 (6): 472–484 DOI: 10.2331/suisan.22-00011 (Online: 11 November 2022; Issue: 2 December 2022)

11. Yukiko Yonemori, Shogo Kokubu, Gregory N. Nishihara, Hikaru Endo, Ryuta Terada 2023. The effects of desiccation and salinity gradients in the PSII photochemical efficiency of an intertidal brown alga, Sargassum fusiforme from Kagoshima, Japan. Phycological Research 71 (1): DOI: 10.1111/PRE.12491 (Online: 6 June 2022; Issue: January 2023)

12. Tomohiro Ito, Toui Yoshioka, Hiromori Shimabukuro, Gregory N. Nishihara, Hikaru Endo, Ryuta Terada 2023. The effect of temperature, light-spectrum, desiccation, and salinity gradients on the photosynthetic performance of a subtidal brown alga, Sargassum macrocarpum from Japan. Phycological Research DOI: 10.1111/pre.12508 (Online: 13 December 2022)

13. 島田菜摘，Gregory N. Nishihara，寺田竜太．2023．自然光下の測定によるウミショウブの光合成光化学効率の日変化．水産増殖（受理：7月8日）．Natsumi Shimada, Gregory N. Nishihara, Ryuta Terada. 2022. Diurnal change of the photochemical efficiency in a seagrass, Enhalus acoroides, based on the measurement under incident sunlight. Aquaculture Science (Accepted: 8 July 2022)

14. 島田菜摘，Gregory N. Nishihara，寺田竜太．2023．奄美大島産ウミジグサHalodule uninervisの光合成における温度や光の影響．日本水産学会誌（受理：2022年11月1日）．Natsumi Shimada, Gregory N. Nishihara, *Ryuta Terada. 2023. The effect of temperature and irradiance on the photosynthesis of a seagrass, Halodule uninervis from Amami-Oshima Island, Kagoshima. Nippon Suisan Gakkaishi (Accepted: 1 November 2022)

Books (in Japanese)
1. 鈴木英治，丸野勝敏，田金秀一郎，寺田竜太，久保紘史郎，平城達哉，大西亘．2022．鹿児島県内の維管束植物標本分布図集–全県版–．鹿児島大学総合研究博物館報告 No. 17，鹿児島大学総合研究博物館，526 p.，ISSN-L 2188-9074（2022年2月）．Eizi Suzuki, Katsutoshi Maruno, Shuichiro Tagane, Ryuta Terada, Koshiro Kubo, Tatsuya Hiragi, Wataru Onishi 2022. Distribution maps of vascular plants in Kagoshima Prefecture. Kagoshima University Museum (February 2022).

2. 鈴木英治，丸野勝敏，田金秀一郎，寺田竜太，久保紘史郎，平城達哉，大西亘．2022．鹿児島県内の維管束植物標本分布図集–奄美群島版–．鹿児島大学総合研究博物館報告 No. 18，鹿児島大学総合研究博物館，252 p.，ISSN-L 2188-9074（2022年2月）．Eizi Suzuki, Katsutoshi Maruno, Shuichiro Tagane, Ryuta Terada, Koshiro Kubo, Tatsuya Hiragi, Wataru Onishi 2022. Distribution maps of vascular plants in Kagoshima Prefecture –Amami Islands–. Kagoshima University Museum, ISSN-L 2188-9074 (February 2022).

3. 寺田竜太．2022．アサクサノリ．14 p.，岩槻邦男，太田英利（編）環境省レッドリスト　日本の絶滅危惧生物図鑑．352pp.，ISBN: 978-4-62130-558-4丸善出版，東京（2022年10月30日）

Others (in Japanese)
1. 田中次郎，北山太樹，坂山英俊，寺田竜太，神谷充伸，嶌田智2022．絶滅のおそれのある野生生物の選定・評価検討．–レッドリスト2020藻類–．藻類70 (1): 29–37．（2022年6月10日）Jiro Tanaka, Taiju Kitayama, Hidetoshi Sakayama, Ryuta Terada, Mitsunobu Kamiya, Satoshi Shimada 2022. Assessment for the Red List of the Japanese threatened species – Red List of Algae 2020. Japanese Journal of Phycology 70 (1): 29–37. (10 March 2022)

論文：アマモZostera marinaの分布南限個体群の光合成における温度や光の影響

鹿児島湾に生育する海産顕花植物アマモZostera marinaの分布南限個体群の光合成における温度や光の影響に関する論文が刊行されました。

 

島田菜摘，畳谷伊織，Gregory N. Nishihara，寺田竜太．2022．

鹿児島産一年生アマモZostera marina実生の光合成に対する温度や光の影響．

日本水産学会誌88 (6): 早期公開（2022年11月11日）

DOI: 10.2331/suisan.22-00011

 

Natsumi Shimada, Iori Tatamidai, Gregory N. Nishihara, Ryuta Terada. 2022.

The effect of temperature and light on the photosynthesis of annual Zostera marina seedlings from Kagoshima, Japan.

Nippon Suisan Gakkaishi 88 (6):

DOI: 10.2331/suisan.22-00011

 

https://www.jstage.jst.go.jp/article/suisan/advpub/0/advpub_22-00011/_article/-char/ja

 

 

マコンブの光合成における光の波長利用特性

3月に修士課程を修了した卒業生がマコンブの光合成における光の波長利用特性に関する論文をこのほど刊行しました。

マコンブは水深2〜15mでの漸深帯に生育しますが，クロロフィルaが光合成に利用する赤い波長の光はこの水深帯に十分に到達しません。本種の光合成を青，緑，赤色光のLEDと白色光（メタルハライドランプ：太陽光の波長構成に類似）で測定したところ，青い光のみで白色光と同等以上に光合成することが明らかになりました。マコンブが含有するフコキサンチンは，青色光に吸収スペクトルのピークがあることが知られていますが，このような補助色素が青色光のみの環境下で効率よく機能し，光合成をおこなっているものと考えられます。

本論文は，2022年7月4日付けのAlgal Research（IF=5.276）オンライン版で刊行されました。

Aoi Shindo, Iris Ann Borlongan, Gregory N. Nishihara, Ryuta Terada 2022.

Interactive effects of temperature and irradiance including spectral light quality on the photosynthesis of a brown alga Saccharina japonica (Laminariales) from Hokkaido, Japan.

Algal Research (IF=5.276)

Article #102777 DOI: 10.1016/j.algal.2022.102777

https://www.sciencedirect.com/.../pii/S2211926422001485

New article: A brownalga, Saccharina japonica can be well photosynthesized under the subtidal blue-light environment.

 Please take a look at our new article featuring the interactive effects of temperature and irradiance including spectral light quality on the photosynthesis of a brown alga Saccharina japonica (Laminariales) from Hokkaido, Japan. This alga is known to be found in subtidal waters up to 20m deep in Hokkaido Island. As the red light that is essential to chlorophyll-a photosynthesis is quickly absorbed in shallow waters, the light spectral availability for photosynthesis is limited in such depth. In fact, the result of the present study revealed that this alga can be well photosynthesized under blue light that penetrates into subtidal waters.

Aoi Shindo, Iris Ann Borlongan, Gregory N. Nishihara, Ryuta Terada 2022. Interactive effects of temperature and irradiance including spectral light quality on the photosynthesis of a brown alga Saccharina japonica (Laminariales) from Hokkaido, Japan.

Algal Research (IF=5.276)

Article #102777

DOI: 10.1016/j.algal.2022.102777

https://www.sciencedirect.com/science/article/pii/S2211926422001485

 

Saccharina japonica