Bioengineering approaches to improve the nutritional values of seeds by increasing their methionine content

doi:10.1007/s11032-011-9690-7

CORC > 中国农业科学院 > 作物科学研究所

	Bioengineering approaches to improve the nutritional values of seeds by increasing their methionine content
	Amir, Rachel 1,2; Han, Tihanfu 3; Ma, Fengming 4
刊名	MOLECULAR BREEDING
	2012
卷号	29 期号:4 页码:915-924
关键词	Methionine Methionine metabolism Methionine-rich storage proteins Nutritional value improvement S-methylmethionine Seeds
ISSN号	1380-3743
DOI	10.1007/s11032-011-9690-7
通讯作者	Amir, Rachel
英文摘要	Methionine is a nutritionally essential, sulfur-containing amino acid found at low levels in plants and in their seeds. Methionine levels often limit the plant's value as a source of dietary protein for humans and animals. Despite recent accumulated knowledge of methionine metabolism in vegetative tissues, there is still little knowledge of methionine metabolism in seeds. In this review, we summarize the efforts made to increase the levels of methionine in seeds using genetic engineering methods. Two main approaches were tested: the first was the expression of methionine-rich storage proteins in a seed-specific manner, with the goal of trapping the soluble methionine into protein form and competing with the catabolism of methionine to its essential metabolites. However, in many cases this approach does not lead to a significant increase in total methionine content. The second approach aimed to increase the soluble content of methionine in seeds. Despite the nutritional significance of methionine, the factors regulating soluble methionine content in seeds are not fully known. Evidence shows that two biosynthetic pathways, the aspartate family pathway and the S-methylmethionine pathway, contribute to soluble methionine content in seeds. However, their roles in soluble methionine synthesis and accumulation are not fully understood. In recent years, combinations of these two approaches have been tested; however, they have not yet succeeded in elevating total methionine content in seeds. More emphasis should be applied to gaining knowledge of the biosynthesis pathways that could contribute to an increase in methionine content in seeds.
学科主题	Agronomy ; Plant Sciences ; Genetics & Heredity ; Horticulture ; AGRONOMY ; GENETICS & HEREDITY ; HORTICULTURE ; PLANT SCIENCES
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000304645700007
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5177]
专题	作物科学研究所
作者单位	1.Migal Galilee Technol Ctr, Plant Sci Lab, IL-11016 Kiryat Shmona, Israel 2.Tel Hai Coll, Tel Hai, Israel 3.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China 4.NE Agr Univ, Coll Agron, Harbin 150030, Peoples R China
推荐引用方式 GB/T 7714	Amir, Rachel,Han, Tihanfu,Ma, Fengming. Bioengineering approaches to improve the nutritional values of seeds by increasing their methionine content[J]. MOLECULAR BREEDING,2012,29(4):915-924.
APA	Amir, Rachel,Han, Tihanfu,&Ma, Fengming.(2012).Bioengineering approaches to improve the nutritional values of seeds by increasing their methionine content.MOLECULAR BREEDING,29(4),915-924.
MLA	Amir, Rachel,et al."Bioengineering approaches to improve the nutritional values of seeds by increasing their methionine content".MOLECULAR BREEDING 29.4(2012):915-924.