Gallardo Karine, Thompson Richard, Burstin Judith
INRA, UMR102 Genetics and Ecophysiology of Grain Legumes, 21000 Dijon, France.
C R Biol. 2008 Oct;331(10):755-62. doi: 10.1016/j.crvi.2008.07.017. Epub 2008 Sep 4.
The accumulation of seed reserves is the result of distinct processes occurring in parallel in the main seed compartments of either maternal (seed coats) or zygotic (embryo, endosperm) origin. With the development of legume genomic resources, recent advances have been made toward understanding the metabolic control of seed filling and the regulatory network underlying reserve accumulation. Genetic variability for seed composition has been studied along with the environmental factors influencing reserve accumulation. Nutrient availability and sink strength were both found to be limiting for reserve accumulation. Genes and/or QTL controlling seed protein content and sulfur-amino acid levels have been identified. These new findings will support our attempts to engineer legume seed composition for added end user value.
种子储备的积累是在母本（种皮）或合子（胚、胚乳）来源的主要种子部分中并行发生的不同过程的结果。随着豆科植物基因组资源的发展，在理解种子充实的代谢控制以及储备积累的调控网络方面取得了新进展。已经研究了种子成分的遗传变异性以及影响储备积累的环境因素。发现养分有效性和库强均限制储备积累。已经鉴定出控制种子蛋白质含量和硫氨基酸水平的基因和/或QTL。这些新发现将支持我们为增加最终用户价值而对豆科植物种子成分进行工程改造的尝试。
