在Rxp中插入单个核酸,使大豆对细菌瘤产生持久的抵抗力
Fumio Taguchi-Shiobara1,2, Koji Takahashi3, Ryoichi Yano4
1Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8518, Japan. fstagu@naro.affrc.go.jp.
概括
大豆Rxp基因是大豆Rxp基因.
科学领域:
- 植物遗传学和育种.
- 分子生物学分子生物学
- 植物病理学 植物病理学
背景情况:
- 细菌性,由Xanthomonas axonopodis pv.引起的 甘氨酸,显著降低大豆产量并导致脱叶.
- Rxp基因的衰退rxp等位基因赋予大豆对细菌疹的持久耐药性.
- 这种耐药性对于在70年前在美国消除细菌瘤至关重要.
研究的目的:
- 隔离和识别历史的Rxp基因,该基因负责大豆中的细菌疹耐药性.
- 描述Rxp基因及其等位基因,包括传递耐药性的rxp等位基因.
主要方法:
- 使用定位克隆来缩小包含Rxp基因的基因组区域.
- 进行了补充测试,以确认基因的身份.
- 获取并分析了Rxp基因的六个不同的等位基因.
主要成果:
- 该Rxp基因,Glyma.17g090500,成功地被隔离到一个11.1 kb区域.
- 鉴定出抗性等位基因rxp含有T插入,导致截断的蛋白质.
- 发现Rxp中的功能丧失突变可以减少细菌瘤病变.
结论:
- Rxp基因编码了一个具有ACT类域的bHLH转录因子.
- 这种rxp等位基因通过产生一个截断的蛋白质,为细菌瘤提供了持久的抵抗力.
- 了解Rxp基因为大豆抗病育种提供了宝贵的见解.
相关概念视频
00:57Antibiotic Selection
49.0K
Overview
49.0K
01:23Stringent Response in E. coli
533
Bacterial growth is closely tied to nutrient availability, with cells proliferating exponentially under favorable conditions and entering a stationary phase when resources become scarce. This transition is mediated by a regulatory mechanism known as the stringent response, which allows bacteria to adapt to nutrient deprivation by modulating gene expression and metabolic activity.During nutrient scarcity, intracellular amino acid levels decline. It results in the accumulation of uncharged tRNAs...
533
01:25Mechanism of Antibiotic Resistance in MRSA
245
Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and...
245