|本期目录/Table of Contents|

[1]申敏,柴友荣.基于RNA干扰抑制油菜种皮色素合成[J].江苏农业科学,2023,51(1):44-49.
 Shen Min??et al.Inhibition of rape seedcoat pigment synthesis based on RNA interference[J].Jiangsu Agricultural Sciences,2023,51(1):44-49.
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基于RNA干扰抑制油菜种皮色素合成(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第51卷
期数:
2023年第1期
页码:
44-49
栏目:
生物技术
出版日期:
2023-01-05

文章信息/Info

Title:
Inhibition of rape seedcoat pigment synthesis based on RNA interference
作者:
申敏12柴友荣2
1.长治职业技术学院,山西长治 046000; 2.西南大学农学与生物科技学院,重庆北碚 400700
Author(s):
Shen Min??et al
关键词:
RNA干扰甘蓝型油菜种皮木质素原花青素TT2基因
Keywords:
-
分类号:
S634.301
DOI:
-
文献标志码:
A
摘要:
甘蓝型油菜是我国最重要的食用植物油来源。在相同遗传背景下黄籽油菜的种子具有种皮薄、含油量高和蛋白质含量高、纤维素和多酚含量低、油质透明等优点。前人研究表明,油菜的模式植物拟南芥TT2基因与种皮颜色有关,而目前油菜TT2基因研究较少。为明确甘蓝型油菜TT2基因功能,利用RNA干扰技术沉默甘蓝型TT2基因。首先构建TT2基因RNA干扰载体,通过农杆菌介导法获得转基因材料。对花后15 d的幼种进行TT2基因定量表达分析。考察转基因材料农艺性状,收获种子进行冷冻切片观察种皮厚度变化,测定种皮中木质素、原花青素含量变化。结果显示种皮结实率降低,种皮颜色变浅。细胞冷冻切片结果显示,种皮变薄、栅栏组织稀疏。生理指标测定木质素、原花青素含量均下降。定量PCR显示,RNA干扰技术抑制油菜中TT2基因的表达。研究结果说明,甘蓝型油菜TT2基因特异性在种子内种皮表达,与预测一致。TT2基因缺失导致种皮色素积累减少,种皮颜色变浅,种皮厚度变薄,栅栏组织稀疏。木质素含量降低表明木质素代谢途径作为苯丙烷通路的分支受到TT2基因缺失影响。原花青素含量降低表明类黄酮代谢途径受TT2基因缺失影响。这与黄籽与黑籽油菜区别相一致。本研究为甘蓝型黄籽油菜种皮色泽的遗传性提供依据,推动甘蓝型黄籽油菜的育种进程。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2022-02-18
基金项目:国家自然科学基金(编号:31871549、30771237)。
作者简介:申敏(1987—),女,山西长治人,硕士,讲师,主要从事生物工程技术方面研究。E-mail:smsw19871989@126.com。
更新日期/Last Update: 2023-01-05