Photosynthetic performance of the red algae <i>Gracilariopsis lemaneiformis</i> under high seawater pH: Excess reactive oxygen production due to carbon limitation

doi:10.1111/php.13968

IOCAS-IR > 实验海洋生物学重点实验室

	*Photosynthetic performance of the red algae Gracilariopsis lemaneiformis* under high seawater pH: Excess reactive oxygen production due to carbon limitation**
	Xu, Hongjun1,2,3 ; Pang, Tong 1,2,4; Zhang, Litao 1,2,4; Liu, Jianguo 1,2,4
	2024-07-19
发表期刊	PHOTOCHEMISTRY AND PHOTOBIOLOGY
ISSN	0031-8655
页码	12
通讯作者	Liu, Jianguo(jgliu@qdio.ac.cn)
摘要	The red algae Gracilariopsis lemaneiformis is extensively cultivated at high densities, leading to significant increases in regional seawater pH due to its photosynthetic removal of inorganic carbon. We conducted a study on G. lemaneiformis cultured under various pH conditions (normal pH, pH 9.3, and pH 9.6) and light levels (dark and 100 mu mol photons m(-2) s(-1)) to investigate how high pH seawater environments affect the metabolic processes of G. lemaneiformis. The high pH did not directly damage the photosynthetic light reactions or the Calvin cycle. Instead, the observed reduction in photosynthetic rates was primarily due to CO2 limitation. However, under illuminated conditions, a high pH environment leads to a decrease in electron transport efficiency (ETo/RC) and reaction center density (RC/CSo), while simultaneously increasing the levels of hydrogen peroxide (H2O2), malondialdehyde (MDA), and the activity of antioxidant enzymes. Under illuminated conditions, the limitation of inhibit the photosynthetic electron transport process, leading to energy imbalance and excessive production of reactive oxygen species, which in turn resulted in lipid peroxidation of the cell membrane. This might be one of the inducing factors responsible for the bleaching in sea-farmed G. lemaneiformis plants.
关键词	carbon limitation gracilariopsis lemaneiformis inorganic photosynthesis seawater pH
DOI	10.1111/php.13968
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China ; Key Program of Science and Technology Innovation in Ningbo[2019B10009] ; TS Industrial Experts Programme[LJNY202102] ; International Partnership Program of Chinese Academy of Sciences[GJHZ2039] ; Shandong Province Natural Science Foundation[ZR2020QD101] ; Shandong Province Mega science Facility Preliminary Research Project - Study on Simulation Shandong Province Mega-science Facility Preliminary Research Project[DKXZZ202205]
WOS研究方向	Biochemistry & Molecular Biology ; Biophysics
WOS类目	Biochemistry & Molecular Biology ; Biophysics
WOS记录号	WOS:001272922200001
出版者	WILEY
WOS关键词	INORGANIC CARBON ; GROWTH ; CULTIVATION ; SEAWEED ; PLANTS ; CHLOROPHYTA ; COMMUNITIES ; RESPONSES ; PATHWAY ; DISEASE
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/186240
专题	实验海洋生物学重点实验室
通讯作者	Liu, Jianguo
作者单位	1.Chinese Acad Sci, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Mega Sci, Shandong Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Qingdao Marine Sci & Technol Ctr, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Xu, Hongjun,Pang, Tong,Zhang, Litao,et al. Photosynthetic performance of the red algae Gracilariopsis lemaneiformis under high seawater pH: Excess reactive oxygen production due to carbon limitation[J]. PHOTOCHEMISTRY AND PHOTOBIOLOGY,2024:12.
APA	Xu, Hongjun,Pang, Tong,Zhang, Litao,&Liu, Jianguo.(2024).Photosynthetic performance of the red algae Gracilariopsis lemaneiformis under high seawater pH: Excess reactive oxygen production due to carbon limitation.PHOTOCHEMISTRY AND PHOTOBIOLOGY,12.
MLA	Xu, Hongjun,et al."Photosynthetic performance of the red algae Gracilariopsis lemaneiformis under high seawater pH: Excess reactive oxygen production due to carbon limitation".PHOTOCHEMISTRY AND PHOTOBIOLOGY (2024):12.