Effects of temperature on the photosynthetic performance in mature thalli of the red alga Gelidium amansii (Gelidiaceae)

doi:10.1016/j.aquaculture.2019.734320

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	Effects of temperature on the photosynthetic performance in mature thalli of the red alga Gelidium amansii (Gelidiaceae)
	Li, Yongfu 2,3,4; Liu, Jianguo 2,4; Zhang, Litao 2,4; Pang, Tong 2,4; Qin, Ruiyang 1,2,4
刊名	AQUACULTURE
	2019-10-15
卷号	512 页码:8
关键词	Gelidium amansii High temperature Photosynthetic performance Chlorophyll a fluorescence transient Gross O-2 evolution and O-2 uptake
ISSN号	0044-8486
DOI	10.1016/j.aquaculture.2019.734320
通讯作者	Liu, Jianguo(jgliu@qdio.ac.cn)
英文摘要	Gelidium amansii, a commercial marine red alga, yields agar of excellent quality, but thus far its cultivation has been unsuccessful. Effects of temperature, especially high temperature, on the photosynthetic performance of this alga are poorly understood. The responses of net O-2 evolution and pigment content in mature thalli exposed to various temperatures of 14, 18, 22, 26, and 30 degrees C for 2 days were studied. Fast Chl-a fluorescence kinetics and RuBPCase activity of plants exposed to 30 degrees C for 6, 12, 24, and 48 h were also determined. The results showed that 14-26 degrees C favored the net O-2 evolution of G. amansii, which ranged from 0.50 to 1.53 mu mol O-2.g(-1).min(-1) High temperature (30 degrees C) decreases the contents of Chl-a and carotenoids. Phycobiliproteins increased in the thalli treated for 12 h and longer at 30 degrees C, suggesting that phycobiliproteins might play an important role in alleviation of oxidative damage caused by high temperature. In addition, the carbon assimilation process, light harvesting pigments, PSII reaction centers, and PSII acceptor side of G. amansii were damaged under 30 degrees C at 12 h; however, the PSII acceptor side was relatively stable during the initial 24 h treatment. At 30 degrees C both PSII photochemistry and carbon assimilation were negatively affected and impacted the photosynthetic response of G. amansii. RuBPCase activity showed a stronger positive correlation with photosynthetic oxygen release than the photochemistry. The results of this study confirm that the optimal temperature for G. amansii photosynthesis is between 22 degrees C to 26 degrees C and high temperatures of 30 degrees C and above limit G. amansii growth in near-shore waters.
资助项目	Shandong Provincial Natural Science Foundation, China[ZR2017QC008] ; Special Project for Marine Public Welfare Industry[201505033]
WOS研究方向	Fisheries ; Marine & Freshwater Biology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000491992200051
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/164820]
专题	海洋研究所_实验海洋生物学重点实验室
通讯作者	Liu, Jianguo
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266237, Shandong, Peoples R China 3.Chinese Acad Sci, Nantong Res & Dev Ctr Marine Sci & Technol, Inst Oceanol, Nantong 226019, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, Inst Oceanol, CAS Key Lab Expt Marine Biol, Qingdao 266071, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Li, Yongfu,Liu, Jianguo,Zhang, Litao,et al. Effects of temperature on the photosynthetic performance in mature thalli of the red alga Gelidium amansii (Gelidiaceae)[J]. AQUACULTURE,2019,512:8.
APA	Li, Yongfu,Liu, Jianguo,Zhang, Litao,Pang, Tong,&Qin, Ruiyang.(2019).Effects of temperature on the photosynthetic performance in mature thalli of the red alga Gelidium amansii (Gelidiaceae).AQUACULTURE,512,8.
MLA	Li, Yongfu,et al."Effects of temperature on the photosynthetic performance in mature thalli of the red alga Gelidium amansii (Gelidiaceae)".AQUACULTURE 512(2019):8.