The exogenous lcy gene has a transit peptide sequence attached so it is targeted to the plastid,
这个是胡箩卜素转化维生素A的关键基因,为什么二代不要了?
everglade 发表评论于
就知道断章取义。看看后面一句。
Golden rice differs from its parental strain by the addition of three beta-carotene biosynthesis genes. The scientific details of the rice were first published in Science in 2000[1]
再看看论文引用1,那是第一代的,2000年。
everglade 发表评论于
第二代黄金大米里只有 psy he ctrI. 维基不是写的明白,第一代后, Icy 就不用了吗。请你读读 ******nature***/nbt/journal/v23/n4/full/nbt1082.html。 这是维基引用的论文4
喜大普奔 发表评论于
@everglade , 你自己好好去读读wiki吧。这是科学,不是你随口可以说的。
Golden rice differs from its parental strain by the addition of three beta-carotene biosynthesis genes.
Golden rice was created by transforming rice with only two beta-carotene biosynthesis genes:
psy (phytoene synthase) from daffodil (Narcissus pseudonarcissus)
crtI (carotene desaturase) from the soil bacterium Erwinia uredovora
(The insertion of a lcy (lycopene cyclase) gene was thought to be needed, but further research showed it is already being produced in wild-type rice endosperm.)
Golden rice was created by transforming rice with only two beta-carotene biosynthesis genes:
psy (phytoene synthase) from daffodil (Narcissus pseudonarcissus)
crtI (carotene desaturase) from the soil bacterium Erwinia uredovora
(The insertion of a lcy (lycopene cyclase) gene was thought to be needed, but further research showed it is already being produced in wild-type rice endosperm.)
上个月美国的National Geographic杂志文章The war on science便批评美国的科盲误国,原因大致有,A宗教愚昧,B保守思想,C政治原因,D自作聪明,E阴谋论调,F经济利益。
其列举的症状有:
否认美国登月 E
否认地球是圆的 A
反自来水加氟 D
否认人类行为导致全球暖化 C,E,F
对Ebola病毒的歇斯地里反应 C
拒绝疫苗注射 D
反转基因 B,C,E,F
反进化论 A,B,C
A 宗教愚昧,主要是基督教教义。
BC 保守思想,政治原因。在美国是共和党为主的保守右派,在中国就是茅左保守派。