Optimization of conditions for tetraspore release and assessment of photosynthetic activities for different generation branches of Gracilaria lemaneiformis Bory

doi:10.1007/s00343-010-9908-2

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	Optimization of conditions for tetraspore release and assessment of photosynthetic activities for different generation branches of Gracilaria lemaneiformis Bory
	Wang Zhiyuan 2; Wang Guangce 1; Niu Jianfeng 1; Wang Wenjun 1; Peng Guang 1
刊名	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2010-07-01
卷号	28 期号:4 页码:738-748
关键词	Gracilaria Lemaneiformis Bory Tetraspore Pulse-amplitude-modulated Photosynthesis
ISSN号	0254-4059
DOI	10.1007/s00343-010-9908-2
文献子类	Article
英文摘要	Gracilaria lemaneiformis Bory is an economically important alga that is primarily used for agar production. Although tetraspores are ideal seeds for the cultivation of G. lemaneiformis, the most popular culture method is currently based on vegetative fragments, which is labor-intensive and time-consuming. In this study, we optimized the conditions for tetraspore release and evaluated the photosynthetic activities of different colonies formed from the branches of G. lemaneiformis using a PAM (pulse-amplitude-modulated) measuring system. The results showed that variations in temperature and salinityhad significant effects on tetraspore yield. However, variations in the photon flux density (from 15 mu mol m(-2) s(-1) to 480 mu mol m(-2) s(-1)) had no apparent effect on tetraspore yield. Moreover, the PAM-parameters Y(I), Y(II), ETR(I), ETR(II) and F (v)/F (m) of colonies formed from different branches showed the same trend: parameter values of first generation branches > second generation branches > third generation branches. These results suggest that the photosynthetic activities of different colonies of branches changed with the same trend. Furthermore, photosynthesis in G. lemaneiformis was found to be involved in vegetative reproduction and tetraspore formation. Finally, the first generation branches grew slowly, but accumulated organic compounds to form large numbers of tetraspores. Taken together, these results showed that the first generation branches are ideal materials for the release of tetraspores.; Gracilaria lemaneiformis Bory is an economically important alga that is primarily used for agar production. Although tetraspores are ideal seeds for the cultivation of G. lemaneiformis, the most popular culture method is currently based on vegetative fragments, which is labor-intensive and time-consuming. In this study, we optimized the conditions for tetraspore release and evaluated the photosynthetic activities of different colonies formed from the branches of G. lemaneiformis using a PAM (pulse-amplitude-modulated) measuring system. The results showed that variations in temperature and salinityhad significant effects on tetraspore yield. However, variations in the photon flux density (from 15 mu mol m(-2) s(-1) to 480 mu mol m(-2) s(-1)) had no apparent effect on tetraspore yield. Moreover, the PAM-parameters Y(I), Y(II), ETR(I), ETR(II) and F (v)/F (m) of colonies formed from different branches showed the same trend: parameter values of first generation branches > second generation branches > third generation branches. These results suggest that the photosynthetic activities of different colonies of branches changed with the same trend. Furthermore, photosynthesis in G. lemaneiformis was found to be involved in vegetative reproduction and tetraspore formation. Finally, the first generation branches grew slowly, but accumulated organic compounds to form large numbers of tetraspores. Taken together, these results showed that the first generation branches are ideal materials for the release of tetraspores.
学科主题	Limnology ; Oceanography
URL标识	查看原文
语种	英语
WOS记录号	WOS:000279294400005
公开日期	2010-12-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/5883]
专题	海洋研究所_实验海洋生物学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China 2.Tianjin Univ Sci & Technol, Coll Marine Sci & Engn, Tianjin 300457, Peoples R China
推荐引用方式 GB/T 7714	Wang Zhiyuan,Wang Guangce,Niu Jianfeng,et al. Optimization of conditions for tetraspore release and assessment of photosynthetic activities for different generation branches of Gracilaria lemaneiformis Bory[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2010,28(4):738-748.
APA	Wang Zhiyuan,Wang Guangce,Niu Jianfeng,Wang Wenjun,&Peng Guang.(2010).Optimization of conditions for tetraspore release and assessment of photosynthetic activities for different generation branches of Gracilaria lemaneiformis Bory.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,28(4),738-748.
MLA	Wang Zhiyuan,et al."Optimization of conditions for tetraspore release and assessment of photosynthetic activities for different generation branches of Gracilaria lemaneiformis Bory".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 28.4(2010):738-748.