海洋科学2024，Vol.48Issue(10)：13-21,9.DOI:10.11759/hykx20240709001
中国紫杉状海门冬配子体和四分孢子体适宜温度和光照强度比较研究
A comparative study on the temperature and light intensity suitable for gametophytic and tetrasporophytic growth of Chinese Asparagopsis taxiformis
摘要
Abstract
Research on the artificial cultivation of Asparagopsis has received increasing attention owing to its po-tential environmental benefits as an effective methane-release inhibitor for ruminants.Here,the light response curves of the gametophytes and tetrasporophytes of Asparagopsis taxiformis were determined first at the onset of light saturations(Ik)of 56 and 88 μmol/(m·s),respectively.Then,different light conditions were set up to study the effects of irradiation on the photosynthesis and respiration rates in the algae.The results showed that the tetraspo-rophytes exhibited a higher photosynthetic activity in comparison to gametophytes.The light compensation point,established using a liquid-phase oxygen electrode,was consistently identified at 10 μmol/(m·s)in both the game-tophytes and tetrasporophytes.Notably,the light intensity saturation point for the tetrasporophytes was 250-270 μmol/(m·s),substantially surpassing that of the gametophytes at 100 μmol/(m·s).However,the soluble total proteins,phycoerythrin,and chlorophyll-a contents did not differ significantly between the two generations.Within 15℃-31℃,the photosynthetic systems of both the tetrasporophytes and gametophytes did not exhibit any stress-related damage,while the effective quantum yield of the tetrasporophytes was slightly affected at>29℃during the fifth day of cultivation.These results also revealed no marked variations in the soluble total protein,phycoerythrin,and chlorophyll-a levels between the two algal morphologies.The filamentous tetrasporophyte ex-hibited remarkably higher photosynthetic efficiency than the gametophyte due to its larger surface area.Therefore,the tetrasporophyte of A.taxiformis is a prime candidate for future reactor-based large-scale commercial cultivation compared to the gametophyte due to its wide adaptability to varying light intensities and higher photosynthetic ac-tivity.关键词
紫杉状海门冬(Asparagopsis taxiformis)/四分孢子体/配子体/温度/光照强度Key words
Asparagopsis taxiformis/tetrasporophyte/gametophyte/temperature/light intensity分类
生物科学引用本文复制引用
牛建峰,王旭雷,郇丽,张宝玉,郑阵兵,解修俊,王立军,顾文辉,王广策..中国紫杉状海门冬配子体和四分孢子体适宜温度和光照强度比较研究[J].海洋科学,2024,48(10):13-21,9.基金项目
国家重点研发计划资助项目(2022YFF0802201) （2022YFF0802201）
山东省重点研发计划重大科技创新项目(2022LZGC004) （2022LZGC004）
国家自然科学基金资助项目(42376091) （42376091）
山东省泰山学者项目研究基金(tspd20210316) （tspd20210316）
财政部和农业农村部:国家现代农业产业技术体系资助项目(CARS-50)[National Key Research and Development Program of China,No.2022YFF0802201 （CARS-50）
The Major Scientific and Technological Innovation Project of Shandong Provincial Key Research and Development Program,No.2022LZGC004 （）
The National Natural Science Foundation of China,No.42376091 （）
the Research Fund for the Taishan Scholar Project of Shan-dong Province,No.tspd20210316 （）
China Agriculture Research System of MOF and MARA,No.CARS-50] （）
