Aquaculture of the hybrid cultivars of Saccharina japonica: Removing the obstacle of sori production by photoperiodic control

doi:10.1016/j.aquaculture.2019.734917

CORC > 海洋研究所 > 中国科学院海洋研究所 > 实验海洋生物学重点实验室

	Aquaculture of the hybrid cultivars of Saccharina japonica: Removing the obstacle of sori production by photoperiodic control
	Su, Li 1,2,3; Shan, Ti Feng 1,2,3; Li, Jing 1,2,3; Pang, Shao Jun 1,2,3; Leng, Xiao Fei 4; Zhang, Yan 4; Gao, Hong Tao 4
刊名	AQUACULTURE
	2020-03-30
卷号	519 页码:7
关键词	Saccharina japonica Seaweed cultivation Aquaculture Hybrid Algae
ISSN号	0044-8486
DOI	10.1016/j.aquaculture.2019.734917
通讯作者	Pang, Shao Jun(sjpang@qdio.ac.cn)
英文摘要	In aquaculture of the kelp Saccharina japonica, hybrid cultivars could improve both the yield and quality of the farmed products. Hybrid cultivars refer to the diploid macroscopic offspring resulted from crossing a pair of haploid vegetative gametophyte cell lines. When these two cell lines are derived from individuals that are geographically isolated, the adult sporophytic offspring mostly remain immature in their second year of growth from June to September in the sea. The absence of sori in the adult sporophytes of the hybrid during this period prevents them from being used as parental ones for releasing spores to produce "summer seedlings" in hatchery. This is due to the seasonal restriction of hatchery operation which requires the availability of matured sori exclusively in August in the temperate zone in the northern hemisphere. The reasons for appearance of nonsporulating adult individuals has never been investigated although raising adult sporophyte in land-based tank filled with recirculated cold water at 10 degrees C has been a routine operation in hatchery enterprises in the subtropical zone in the south region of China for more than 20 years. While in the north region of China, parental sporophytes have been always raised in the sea until they are used for hatchery. From 2017 to 2019, we have conducted a series of culture experiments, both in beakers with isolated thallus in incubators and in large concrete tanks with intact individuals, trying to understand this phenomenon and look for a solution. The results showed that, (1) the hybrid cultivars demonstrated a feature of photoperiodic short-day plant and that it could form sorus within 25 days when exposed to SD at higher temperature (18 degrees C); (2) the hybrid cultivar maintains unique genetic structures different from the conventional ones as revealed by use of ten polymorphic microsatellite markers; (3) the sensitivity of the hybrids to the shortening of day-length differs in at least 10 days among individuals and could be inherited to its offspring; (4) sori induction in the intact adult sporophytes could be achieved within a month when supplied with SD, applicable to all current cultivars including the hybrids. The discovery and solution presented in this article has opened a gateway to utilization of hybrid cultivars in the giant kelp farming industry in China.
资助项目	China Agriculture Research System[CARS-50] ; National Key Technology Support Program[2015BAD13B05] ; State's Key Project of Research and Development Plan[2016YFC1402507] ; special supporting program for maintaining seaweed stock culture from the Chinese Academy of Science[CZBZX-1] ; STS program from the Chinese Academy of Sciences[KFJ-STS-QYZD-154] ; National Infrastructure of Fishery Germplasm Resource[2019DKA30470] ; Taishan Scholar Program of Shandong Province ; Huiquan Scholar Program of Institute of Oceanology, Chinese Academy of Sciences
WOS研究方向	Fisheries ; Marine & Freshwater Biology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000511835000078
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/165610]
专题	海洋研究所_实验海洋生物学重点实验室
通讯作者	Pang, Shao Jun
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Expt Marine Biol, 7 Nanhai Rd, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Megasci, 7 Nanhai Rd, Qingdao 266071, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, 7 Nanhai Rd, Qingdao 266071, Peoples R China 4.Dalian Haibao Fishery Co Ltd, 1 Bailanzi Tieshan Lvshun, Dalian 116045, Peoples R China
推荐引用方式 GB/T 7714	Su, Li,Shan, Ti Feng,Li, Jing,et al. Aquaculture of the hybrid cultivars of Saccharina japonica: Removing the obstacle of sori production by photoperiodic control[J]. AQUACULTURE,2020,519:7.
APA	Su, Li.,Shan, Ti Feng.,Li, Jing.,Pang, Shao Jun.,Leng, Xiao Fei.,...&Gao, Hong Tao.(2020).Aquaculture of the hybrid cultivars of Saccharina japonica: Removing the obstacle of sori production by photoperiodic control.AQUACULTURE,519,7.
MLA	Su, Li,et al."Aquaculture of the hybrid cultivars of Saccharina japonica: Removing the obstacle of sori production by photoperiodic control".AQUACULTURE 519(2020):7.