8Hacham Y, Matityahu I, Schuster G, et al. Over expression of mutated forms of aspartate kinase and cystathionine-y-synthase in tobacco leaves resulted in the high accumulation of methionine and threonine[J]. Plant Journal, 2008, 54 (2):260- 271.
9Ealing P M, Hancock K R, White D W R. Expression of the pea albumin 1 gene in transgenic white clover and tobacco[J].Transgenic Research, 1994, 3 : 344-354.
10Morton R L, Ellery A J, Higgins T J V. Downstream elements from the pea albumin 1 gene confer sulfur responsiveness on a reporter gene[J]. Molecular & General Genetics, 1998, 259: 309-316.