Novel means for variety breeding and sporeling production in the brown seaweed Undaria pinnatifida (Phaeophyceae): Crossing female gametophytes from parthenosporophytes with male gametophyte clones

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	Novel means for variety breeding and sporeling production in the brown seaweed Undaria pinnatifida (Phaeophyceae): Crossing female gametophytes from parthenosporophytes with male gametophyte clones
	Shan, Ti Feng; Pang, Shao Jun; Gao, Su Qin
刊名	PHYCOLOGICAL RESEARCH
	2013-04-01
卷号	61 期号:2 页码:154-161
关键词	breeding parthenogenesis seedlings sporelings Undaria pinnatifida
ISSN号	1322-0829
通讯作者	Pang, SJ
中文摘要	The unialgal haploid gametophyte clones are frequently used for variety breeding and sporeling production in the brown seaweed Undaria pinnatifida because a single crossing of a pair of the selected male and female gametophyte clones can generate sporophytic offspring with identical genotype and phenotype. As the seeds to be sprayed on the collectors, the detachment rate of the filamentous gametophytes is high in comparison to the seeded spores. In this investigation, we report the use of parthenogenesis to achieve the same goal in variety selection and sporeling production but with higher efficiency. The selected female unialgal gametophyte clone (Code: 06-8-1F) was induced to produce parthenosporophytes. These sporophytes were grown up in a controlled system and used to release zoospores. All zoospores generated into female gametophytes. These female gametophytes were allowed to go through parthenogenesis for the second year to confirm the applicability of this means. In the third year, the zoospores released from the parthenosporophytes were seeded on collectors over summer in female gametophyte form. In the early autumn, a selected male unialgal gametophyte clone (code: 5#F1-2-5M) was used to cross the seeded female gametophytes on the collectors. When the sporelings reached a mean length of 780m, they were transplanted to open sea on longlines for growing up. At harvest, the average length, width and wet weight of the adult sporophytes were 211cm, 48.8cm and 373g, respectively. The sporophytic blades were uniformly smooth without wrinkles on both sides of the midrib, indicating top quality of the products. Amplified fragment length polymorphism analyses confirmed the identical genotypes of sporophytic offspring. These results suggested that this novel variety breeding and sporeling production method could serve as an efficient alternative to the traditional breeding technique for U.pinnatifida and possibly other commercial kelps that have identical life cycles.
英文摘要	The unialgal haploid gametophyte clones are frequently used for variety breeding and sporeling production in the brown seaweed Undaria pinnatifida because a single crossing of a pair of the selected male and female gametophyte clones can generate sporophytic offspring with identical genotype and phenotype. As the seeds to be sprayed on the collectors, the detachment rate of the filamentous gametophytes is high in comparison to the seeded spores. In this investigation, we report the use of parthenogenesis to achieve the same goal in variety selection and sporeling production but with higher efficiency. The selected female unialgal gametophyte clone (Code: 06-8-1F) was induced to produce parthenosporophytes. These sporophytes were grown up in a controlled system and used to release zoospores. All zoospores generated into female gametophytes. These female gametophytes were allowed to go through parthenogenesis for the second year to confirm the applicability of this means. In the third year, the zoospores released from the parthenosporophytes were seeded on collectors over summer in female gametophyte form. In the early autumn, a selected male unialgal gametophyte clone (code: 5#F1-2-5M) was used to cross the seeded female gametophytes on the collectors. When the sporelings reached a mean length of 780m, they were transplanted to open sea on longlines for growing up. At harvest, the average length, width and wet weight of the adult sporophytes were 211cm, 48.8cm and 373g, respectively. The sporophytic blades were uniformly smooth without wrinkles on both sides of the midrib, indicating top quality of the products. Amplified fragment length polymorphism analyses confirmed the identical genotypes of sporophytic offspring. These results suggested that this novel variety breeding and sporeling production method could serve as an efficient alternative to the traditional breeding technique for U.pinnatifida and possibly other commercial kelps that have identical life cycles.
学科主题	Marine & Freshwater Biology
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Marine & Freshwater Biology
研究领域[WOS]	Marine & Freshwater Biology
关键词[WOS]	SEEDLING PRODUCTION ; CULTIVATION ; LAMINARIA
收录类别	SCI
原文出处	10.1111/pre.12014
语种	英语
WOS记录号	WOS:000318184900009
公开日期	2014-07-17
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/16610]
专题	海洋研究所_实验海洋生物学重点实验室
作者单位	Chinese Acad Sci, Key Lab Expt Marine Biol, Inst Oceanol, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Shan, Ti Feng,Pang, Shao Jun,Gao, Su Qin. Novel means for variety breeding and sporeling production in the brown seaweed Undaria pinnatifida (Phaeophyceae): Crossing female gametophytes from parthenosporophytes with male gametophyte clones[J]. PHYCOLOGICAL RESEARCH,2013,61(2):154-161.
APA	Shan, Ti Feng,Pang, Shao Jun,&Gao, Su Qin.(2013).Novel means for variety breeding and sporeling production in the brown seaweed Undaria pinnatifida (Phaeophyceae): Crossing female gametophytes from parthenosporophytes with male gametophyte clones.PHYCOLOGICAL RESEARCH,61(2),154-161.
MLA	Shan, Ti Feng,et al."Novel means for variety breeding and sporeling production in the brown seaweed Undaria pinnatifida (Phaeophyceae): Crossing female gametophytes from parthenosporophytes with male gametophyte clones".PHYCOLOGICAL RESEARCH 61.2(2013):154-161.