JSP48

We will attend the 48th annual Japanese Society of Phycology meeting (JSP48) held at Kobe University this weekend. From the Marine Botany Lab, a total of nine presentations will be presented by faculty and students. The photo shows printed posters.

 

 

New Assistant Professor

The Marine Botany Lab of Kagoshima University welcomes Dr. Masahiro Suzuki, who has been newly appointed as Assistant Professor. His specialty lies in the taxonomy and systematics of macroalgae, particularly marine and freshwater red algae. He will conduct research and education for undergraduate and postgraduate students alongside Professor Ryuta Terada and Associate Professor Hikaru Endo.

 

Dr. Suzuki's profile

https://researchmap.jp/tonysharks?lang=en

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）

論文：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

新しい論文が出ました。佐賀県有明水産振興センターとの共同研究の成果です。

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 (6): 521–528

DOI: 10.2331/suisan.23-00024

 

https://www.jstage.jst.go.jp/article/suisan/89/6/89_23-00024/_article/-char/ja

無料でダウンロードできます。

 

ノリ養殖の採苗は，地先水温の状況を見ながら事前に採苗日を決めておき，採苗日に胞子体（牡蠣殻糸状体）の殻胞子の放出のピークが来るように放出誘導をします。しかし，台風等の荒天で採苗日を数日延期せざる得ない年が稀にあります。このような場合，殻胞子の放出誘導中にもかかわらず，成熟の進行を一時的に抑え，放出のピークをずらす技術があり，成熟抑制技術や殻胞子放出抑制技術と呼ばれています。今回は，この処理中の胞子体の光合成活性の変化をモニタリングし，この技術の妥当性を評価しました。その結果，ノリ養殖の工程で実際に実施された3日間程度の放出抑制処理では，光化学系IIの実効量子収率は安定して推移することが示唆されました。

論文：鹿児島湾のアマモ場が2006年と比べて1/10に減少

近年，日本各地で藻場の衰退や消失が報告されています。私たちの研究室が2021年に鹿児島湾の海草藻場（アマモ場）を広域調査した結果，2006年と比べて約10分の1に減少していることが明らかになりました。

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

DOI: 10.2331/suisan.23-00020

https://doi.org/10.2331/suisan.23-00020

無料でダウンロードできます。

 

鹿児島湾のアマモ場（鹿児島市）

 

New article: 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

Introducing our new article featuring real-time measurements of PSII photochemical efficiency in the microscopic sporophyte of Pyropia yezoensis. It reveals the low capacity of desiccation tolerance that drops within a few minutes of dehydration.

 

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: Article 103283, DOI: 10.1016/j.algal.2023.103283 

 

https://www.sciencedirect.com/science/article/pii/S2211926423003168?dgcid=author

日本学術振興会ひらめき☆ときめきサイエンスの海藻押し葉講座の10年間をまとめた邦文が出ました

私たちの研究室では，小学生向けの海藻押し葉公開講座を日本学術振興会ひらめき☆ときめきサイエンス事業で10年間実施してきました。このほど，10年間の軌跡をまとめた邦文が日本藻類学会和文誌「藻類」に掲載されました。

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 (2): 103–105.（2023年7月10日）

以下のリンクよりダウンロード可能です。 

https://researchmap.jp/ryuta-terada/misc/42738266 

https://researchmap.jp/ryuta-terada/misc/42738266/attachment_file.pdf

New article: Ryuguphycus kuaweuweu (= Umbraulva kuaweuweu) from the northern Ryukyu Islands

Please take a look at my latest article featuring the response of photosynthesis to temperature and irradiance in a deep subtidal green alga, Ryuguphycus kuaweuweu (Ulvales), collected from a depth of 35 meters in the northern Ryukyu Islands, Japan.

Terada, Shindo, Moriyama, Shimboku, 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

DOI: 10.1016/j.algal.2023.103189

https://doi.org/10.1016/j.algal.2023.103189

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

January issue of Phycological Research

Please check out the cover page of the January issue of Phycological Research. In Kagoshima, Japan, you can see a beautiful underwater view of an edible brown alga, Sargassum fusiforme.

https://onlinelibrary.wiley.com/toc/14401835/2023/71/1

Two articles from my lab are in this issue.

Yonemori, Kokubu, Nishihara, Endo, Terada 2023. The effects of desiccation and salinity gradients in the PSII photochemical efficiency of an intertidal brown alga, Sargassum fusiforme from Kagoshima, Japan

https://onlinelibrary.wiley.com/doi/10.1111/pre.12491 

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

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

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

New article: The effects of desiccation and salinity gradients in the PSII photochemical efficiency of an intertidal brown alga, Sargassum fusiforme from Kagoshima, Japan

 

Please check out our new article featuring the effects of desiccation and salinity gradients on the photochemical efficiency of an edible brown alga, Sargassum fusiforme from Kagoshima, Japan

 

Yukiko Yonemori, Shogo Kokubu, Gregory N. Nishihara, Hikaru Endo, Ryuta Terada 2022. The effects of desiccation and salinity gradients in the PSII photochemical efficiency of an intertidal brown alga, Sargassum fusiforme from Kagoshima, Japan. Phycological Research DOI: 10.1111/PRE.12491

 

https://onlinelibrary.wiley.com/doi/full/10.1111/pre.12491

 

Congratulation to Yukiko and great co-authors!

 

Sargassum fusiforme

 

New article: Variability in the net ecosystem productivity (NEP) of seaweed farms

 

Introducing another new article featuring the variability in the net ecosystem productivity (NEP) of Seaweed Farms.

 

Congratulation to Greg, Yoichi, and co-authors on this nice article.

 

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

 

https://www.frontiersin.org/articles/10.3389/fmars.2022.861932/full 

 

 

T/S Nansei-Maru Tokara Islands Survey: Gaja-jima Island

 As the second research voyage of the T/S Nansei-Maru for our lab in May, we conducted the Tokara Islands survey featuring an uninhabited island, Gaja-jima island, northern Ryukyu Archipelago. This is the collaboration survey of the Marine Ecology, Ichthyology, and Marine Botany labs at Kagoshima University.

Underwater view of the off of Gaja-jima Island

Gaja-jima Island

Kogaja-jima Island

Gaja-jima Island

Caulerpa filicoides

T/S Nansei-Maru, Kagoshima University

A view of Yakushima-Island, from T/S Nansei-Maru

 

Sargassum horneri and Ecklonia aridoca in Nagashima island

Introducing some nature photos of seaweed communities from the field survey in Nagashima Island, Kagoshima. Spring has sprung! 

Sargassum horneri 

Ecklonia aridoca

Sargassum horneri

Sargassum horneri

Ecklonia aridoca