植物根际非病原细菌介导的系统诱导抗病性

Rhizobacteria-mediated Induced Systemic Resistance in Plant

根际非病原细菌可诱使植物产生诱导系统抗病性 (ISR)。在拟南芥、菜豆、康乃馨、黄瓜、萝卜、烟草和番茄等植物上 ,已发现根际非病原细菌在与病原菌隔离条件下诱导了对真菌、细菌、病毒的系统抗病性。诱导菌株在不同植物品种上表现出不同的诱导活性。诱导ISR表达的因子包括脂多糖、嗜铁因子和水杨酸。根际非病原细菌诱导ISR的途径有所不同 ,一些根际细菌通过水杨酸途径 ,而其它根际细菌则通过茉莉酮酸一乙烯途径诱导ISR的表达。根际非病原细菌诱导ISR ,可作为一种有效、安全的生防措施 ,用于田间作物病害的控制。

Non-pathogen of rhizobacteria can induce a systemic resistance in plants (ISR).Rhizobacteriamediated induced systemic resistance (ISR) has been demonstrated against fungi, bacteria, and viruses in Arabidopsis, bean, carnation, cucumber, radish, tobacco, and tomato under conditions in which the inducing bacteria and the challenging pathogen remained spatially separated. Bacterial strains differ in their ability to induce resistance in different plant species. Bacterial determinants of ISR include lipopolysaccharides (LPS), siderophores, and salicylic acid (SA). Different rhizobacteria were with different pathway to develop ISR, some inducing ISR through the SA-dependent pathway, others requiring jasmonic acid and ethylene perception by the plant. ISR is effective under field conditions and offers a natural mechanism for biological control of plant diseases.