Building blocks method, efficient gene silencing of multiple genes

积木法，多基因高效基因沉默

• 批准号: 24658040
• 负责人: NAKAYASHIKI Hitoshi
• 金额: $ 2.66万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-24658040/
• 关键词: いもち病菌; 細胞壁分解酵素; RNAi; 遺伝子サイレンシング; カスパーゼ; 細胞壁加水分解酵素

In the post-genomics era, a major obstacle to functional genomics is functional redundancy among gene family members. To overcome this difficulty, we have developed an RNAi strategy designated building blocks method, in which a 40-60 bp sequence is chosen from a target gene, and such sequences from multiple gene family members were combined to make an artificial RNAi trigger by synthetic DNA. In this study, the building blocks method was applied to knock-down (KD) two gene families, xylanases and cellulases, to elucidate their roles in the pathogenicity of the blast fungus, Magnaporthe oryzae. In the resulting KD mutants, the transcript levels of all the target genes were significantly decreased. The number of lesions, rate of penetration, and extent of infected cells were all reduced in KD mutant-infected leaves. Thus, we concluded that xylanases and cellulases play significant roles in vertical penetration and horizontal expansion of M. oryzae in infected plants.

在后基因组学时代，功能基因组学的主要障碍是基因家族成员之间的功能冗余。为了克服这一困难，我们开发了一种称为构建块方法的RNAi策略，该方法从目标基因中选择40-60 bp的序列，并将来自多个基因家族成员的序列组合在一起，通过合成DNA制造人工RNAi触发器。本研究采用构建块法对木聚糖酶和纤维素酶两个基因家族进行敲除，以阐明它们在稻瘟病菌（Magnaporthe oryzae）致病性中的作用。在KD突变体中，所有靶基因的转录水平都显著降低。在KD突变体感染的叶片中，病变的数量、穿透率和感染细胞的程度都降低了。综上所述，木聚糖酶和纤维素酶在水稻m.s oryzae侵染植株的纵向渗透和横向扩张中发挥了重要作用。

项目成果

いもち病菌における新たな遺伝子解析手法、Building Blocks法の検討

稻瘟病菌遗传分析新方法“Building Blocks”法的检验

• 发表时间: 2012
• 作者: 村部知里;河南浩美;伊藤賢司;中屋敷均
• 通讯作者: 中屋敷均

Cellulases Belonging to Glycoside Hydrolase Families 6 and 7 Contribute to the Virulence of Magnaporthe oryzae

• DOI: 10.1094/mpmi-02-12-0043-r
• 发表时间: 2012-09-01
• 期刊: MOLECULAR PLANT-MICROBE INTERACTIONS
• 影响因子: 3.5
• 作者: Ba Van Vu;Itoh, Kenji;Nakayashiki, Hitoshi
• 通讯作者: Nakayashiki, Hitoshi

いもち病菌における新たな遺伝子解析手法Building Blocks法の検討

检验稻瘟病菌的新遗传分析方法（构建模块法）

• 发表时间: 2012
• 作者: Pham;K. T. M.;Vu;B. V.;Nguyen;Q. B.;Ikeda;K.;and Nakayashiki;H.;村部ら
• 通讯作者: 村部ら

細胞機能構造学

细胞功能结构

Substrate-Induced Transcriptional Activation of the MoCel7C Cellulase Gene Is Associated with Methylation of Histone H3 at Lysine 4 in the Rice Blast Fungus Magnaporthe oryzae

• DOI: 10.1128/aem.02082-13
• 发表时间: 2013-11-01
• 期刊: APPLIED AND ENVIRONMENTAL MICROBIOLOGY
• 影响因子: 4.4
• 作者: Ba Van Vu;Kieu Thi Minh Pham;Nakayashiki, Hitoshi
• 通讯作者: Nakayashiki, Hitoshi