干旱区生态环境知识资源中心(Arid): Differentiation of the seed coat and composition of the mucilage of Lepidium perfoliatum L: a desert annual with typical myxospermy

Arid

	Differentiation of the seed coat and composition of the mucilage of Lepidium perfoliatum L: a desert annual with typical myxospermy
	Huang Daihong; Wang Cui; Yuan Junwen; Cao Jing; Lan Haiyan
来源期刊	Acta Biochimica et Biophysica Sinica
ISSN	1672-9145
出版年	2015
卷号	47 期号:10 页码:775-787
英文摘要	Myxospermy is an important feature in seeds of many plant species grown in desert region. Fertilization can initiate differentiation of the seed coat epidermis into a specialized cell type with mucilage production. In the present study, comprehensive analyses were performed on the seed coat differentiation, mucilage production and composition, and seed germination in Lepidium perfoliatum (Brassicaceae), a desert annual with typical myxospermy in China. First, results indicated that mucilage was secreted uniformly at the outertangential wall, resulting in compression of the cytoplasm to the bottom of the epidermal cells. Secondly, the inner tangential wall and two radial walls of the subepidermal cells were apparently thickened by production of a secondary cell wall material, which resulted in a 'typical' palisade appearance. Thirdly, immunohistochemical staining combined with the enzymatic digestion and infrared spectrum analysis of the mucilage indicated that, while one important component of the seed coat mucilage in L. perfoliatum was pectin, it also contained beta-1,3-D-glucan and xyloglucan. Finally, seed germination showed that seeds with mucilage displayed significantly higher germination percentage than that of demucilaged seeds in abundant or excess water conditions. These results suggest that the possible ecological role of mucilage in L. perfoliatum is in the adaptation to habitats with well-watered and water-logged conditions, rather than water stress.
英文关键词	p-1 3-D-glucan germination Lepidium perfoliatum mucilage seed coat
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Life Sciences & Biomedicine - Other Topics
CSCD记录号	CSCD:5549225
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335563
作者单位	Huang Daihong, College of Life Science and Technology, Xinjiang University, Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, Urumqi, Xinjiang 830046, China.; Wang Cui, College of Life Science and Technology, Xinjiang University, Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, Urumqi, Xinjiang 830046, China.; Yuan Junwen, College of Life Science and Technology, Xinjiang University, Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, Urumqi, Xinjiang 830046, China.; Cao Jing, College of Life Science and Technology, Xinjiang University, Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, Urumqi, Xinjiang 830046, China.; Lan Haiyan, College of Life Science and Technology, Xinjiang University, Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, Urumqi, Xinjiang 830046, China.
推荐引用方式 GB/T 7714	Huang Daihong,Wang Cui,Yuan Junwen,et al. Differentiation of the seed coat and composition of the mucilage of Lepidium perfoliatum L: a desert annual with typical myxospermy[J],2015,47(10):775-787.
APA	Huang Daihong,Wang Cui,Yuan Junwen,Cao Jing,&Lan Haiyan.(2015).Differentiation of the seed coat and composition of the mucilage of Lepidium perfoliatum L: a desert annual with typical myxospermy.Acta Biochimica et Biophysica Sinica,47(10),775-787.
MLA	Huang Daihong,et al."Differentiation of the seed coat and composition of the mucilage of Lepidium perfoliatum L: a desert annual with typical myxospermy".Acta Biochimica et Biophysica Sinica 47.10(2015):775-787.