气候变化领域集成服务门户(CCPortal): Phosphorus deficiency regulates the growth and photophysiology responses of an economic macroalga Gracilariopsis lemaneiformis to ocean acidification and warming

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DOI	10.1007/s10811-024-03187-0
	Phosphorus deficiency regulates the growth and photophysiology responses of an economic macroalga Gracilariopsis lemaneiformis to ocean acidification and warming
	Zhou, Wei; Wu, Hui; Shi, Mengqi; Chen, Zeyu; Wang, Jinguo; Xu, Juntian
发表日期	2024
ISSN	0921-8971
EISSN	1573-5176
英文摘要	Ocean acidification and warming caused by elevated CO2 are urgent problems facing the marine ecological environment. With the strengthening of environmental governance in China, anthropogenic inputs of terrestrial phosphorus into the coastal ocean have drastically decreased, resulting in frequent phosphorus deficiency in seawater. These environmental factors in the future may affect algal growth, photosynthesis and yield. As an important economic macroalga suitable for large-scale cultivation, Gracilariopsis lemaneiformis is also potentially affected by the coupling of ocean acidification, warming and phosphorus deficiency. In this study, G. lemaneiformis was cultured outdoors under two pCO(2) levels (LC, 400 mu atm; HC, 1000 mu atm), two temperatures (LT, 20 degree celsius; HT, 24 degree celsius) and two phosphorus concentrations (LP, 0.1 mu mol L-1; HP, 10 mu mol L-1) to investigate its growth and photosynthetic performance. The results showed that LP significantly decreased the relative growth rates (RGR) and the maximum photosynthesis rate (P-m) of G. lemaneiformis both under LC and HC conditions. Under P depletion condition, the effects of warming and ocean acidification on the growth and photosynthetic performance of G. lemaneiformis showed an opposite trend, that is, HC caused a decrease in the growth, P-m, maximum relative electron transfer rate (rETR(max)) and light utilization efficiency (alpha) from the rapid light response curve of G. lemaneiformis, and HT improved these parameters. Under LP condition, HC significantly inhibited the RGR of G. lemaneiformis in the LT group but had no significant effect on RGR in the HT group. Additionally, under LP condition, HC insignificantly affected PE and PC contents in the LT group, but significantly reduced these contents in the HT group. These findings suggest that phosphorus deficiency results in a decline in the growth of G. lemaneiformis and, under LP condition, the inhibition effect of ocean acidification on the growth of G. lemaneiformis could be mitigated by warming. This study provides scientific guidance for the field cultivation and selective breeding of G. lemaneiformis in phosphorus-deficient seawater under global climate change.
英文关键词	Phosphorus deficiency; Growth; Photophysiology; Gracilariopsis lemaneiformis; Rhodophyta; Elevated CO2
语种	英语
WOS研究方向	Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS类目	Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS记录号	WOS:001158016500004
来源期刊	JOURNAL OF APPLIED PHYCOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/305139
作者单位	Ministry of Natural Resources of the People's Republic of China; Jiangsu Ocean University; Jiangsu Ocean University; Jiangsu Ocean University
推荐引用方式 GB/T 7714	Zhou, Wei,Wu, Hui,Shi, Mengqi,et al. Phosphorus deficiency regulates the growth and photophysiology responses of an economic macroalga Gracilariopsis lemaneiformis to ocean acidification and warming[J],2024.
APA	Zhou, Wei,Wu, Hui,Shi, Mengqi,Chen, Zeyu,Wang, Jinguo,&Xu, Juntian.(2024).Phosphorus deficiency regulates the growth and photophysiology responses of an economic macroalga Gracilariopsis lemaneiformis to ocean acidification and warming.JOURNAL OF APPLIED PHYCOLOGY.
MLA	Zhou, Wei,et al."Phosphorus deficiency regulates the growth and photophysiology responses of an economic macroalga Gracilariopsis lemaneiformis to ocean acidification and warming".JOURNAL OF APPLIED PHYCOLOGY (2024).