作业帮英语翻译Trienoic fatty acids (TAs),hexadecatrienoic acid(16:3) a
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英语翻译
Trienoic fatty acids (TAs),hexadecatrienoic acid
(16:3) and linolenic acid (18:3),are the major polyunsaturated
fatty acid species in membrane lipids.
Increasing TAs in chloroplast membranes has been
shown to enhance low temperature tolerance in plants
during the early growth stage (Iba 2002).Overexpressing
the Arabidopsis chloroplast x-3 desaturase genes
FAD7 or FAD8 in tobacco increased TAs and
decreased dienoic fatty acids (DAs),hexadecadienoic
acid (16:2) and linoleic acid (18:2),in leaf tissue
(Nishiuchi and Ida 1998).Comparison of wild type
with transgenic tobacco showed that chilling tolerancewas achieved in transgenic seedlings,but not in mature
plants (Kodama et al 1995).When the levels of TAs
in tobacco phospholipids,the main constituent of
extrachloroplastic membranes,were increased by
overexpressing an ER localized x-3 fatty acid desaturase
FAD3 gene,no significant differences were
detected between wild type and transgenic tobacco for
resistance to chilling and freezing
Trienoic fatty acids (TAs),hexadecatrienoic acid
(16:3) and linolenic acid (18:3),are the major polyunsaturated
fatty acid species in membrane lipids.
Increasing TAs in chloroplast membranes has been
shown to enhance low temperature tolerance in plants
during the early growth stage (Iba 2002).Overexpressing
the Arabidopsis chloroplast x-3 desaturase genes
FAD7 or FAD8 in tobacco increased TAs and
decreased dienoic fatty acids (DAs),hexadecadienoic
acid (16:2) and linoleic acid (18:2),in leaf tissue
(Nishiuchi and Ida 1998).Comparison of wild type
with transgenic tobacco showed that chilling tolerancewas achieved in transgenic seedlings,but not in mature
plants (Kodama et al 1995).When the levels of TAs
in tobacco phospholipids,the main constituent of
extrachloroplastic membranes,were increased by
overexpressing an ER localized x-3 fatty acid desaturase
FAD3 gene,no significant differences were
detected between wild type and transgenic tobacco for
resistance to chilling and freezing
译：
第一句：TAs、十六碳三烯酸和亚麻酸是组成质膜的主要的三种多重不饱和脂肪酸.在植物成长初期,植物细胞叶绿体膜上的TAs含量上升,这有助于其抵御低温状况.（lba 2002）.
第二句：拟南芥-叶绿体 x-3 脱饱和酶基因的过度表达,烟草中的FAD7 或者 FAD8都会提高TAs的含量并且降低DAs、十六碳二烯酸、十八碳三烯酸的含量（在叶组织细胞中）（Nishiuchi and Ida 1998）.
第三句：将野生烟草和转基因烟草对比,会发现转基因烟草获得了低温的耐受力,这个在自然生长的植物中是没有的(Kodama et al 1995).
第四句：内质网（ER）局部的 x-3 脂肪酸脱饱和酶 FAD3 基因的过度表达,将会提高TAs在烟草的磷脂（叶绿体膜的主要组成物质）中的含量.除此之外,在野生型烟草和转基因烟草之间就没有什么是可以被检测出来的,有关于抵御寒冷这种特性的明显不同.
PS：阁下所给原文貌似在意思上有点的不通顺,所以本人就结合自身理解将一些不明确的地方进行了补充和修正,如果有错,请指出!
第一句：TAs、十六碳三烯酸和亚麻酸是组成质膜的主要的三种多重不饱和脂肪酸.在植物成长初期,植物细胞叶绿体膜上的TAs含量上升,这有助于其抵御低温状况.（lba 2002）.
第二句：拟南芥-叶绿体 x-3 脱饱和酶基因的过度表达,烟草中的FAD7 或者 FAD8都会提高TAs的含量并且降低DAs、十六碳二烯酸、十八碳三烯酸的含量（在叶组织细胞中）（Nishiuchi and Ida 1998）.
第三句：将野生烟草和转基因烟草对比,会发现转基因烟草获得了低温的耐受力,这个在自然生长的植物中是没有的(Kodama et al 1995).
第四句：内质网（ER）局部的 x-3 脂肪酸脱饱和酶 FAD3 基因的过度表达,将会提高TAs在烟草的磷脂（叶绿体膜的主要组成物质）中的含量.除此之外,在野生型烟草和转基因烟草之间就没有什么是可以被检测出来的,有关于抵御寒冷这种特性的明显不同.
PS：阁下所给原文貌似在意思上有点的不通顺,所以本人就结合自身理解将一些不明确的地方进行了补充和修正,如果有错,请指出!
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