生物技术进展
生物技術進展
생물기술진전
2013年
1期
12-17
,共6页
细胞核%核质运输%防御反应信号传导%植物免疫反应
細胞覈%覈質運輸%防禦反應信號傳導%植物免疫反應
세포핵%핵질운수%방어반응신호전도%식물면역반응
nucleus%nucleocytoplasmic trafficking%defense response signal transport%plant immune response
植物细胞与动物细胞一个基本的共同特征是细胞核与细胞质之间都存在着物质交换.大多数真核生物参与细胞核核膜运输的大分子具有保守性,这些细胞核组分的突变会损害植物体防御信号的传导,因此核质交换在植物先天性免疫中起重要作用.细胞核核膜对于防御调节因子在空间上的相互隔离,以及细胞受到外界刺激后相应调节因子受诱导发生易位进入细胞核,是植物体中相关防御基因表达调控的基础.病原微生物的无毒蛋白多数作用于植物细胞的细胞核;寄主的抗性蛋白、免疫元件、转录因子、转录调控因子等重要成分不断进行核质交换,并且这些寄主成分在细胞核内的积累量对植物防御反应的水平起着决定性的影响.这些实事都进一步说明了植物细胞核对于植物与病原微生物之间的相互作用具有重要影响.本文就细胞核对于植物体与病原微生物之间相互识别的重要性进行了新的论述.
植物細胞與動物細胞一箇基本的共同特徵是細胞覈與細胞質之間都存在著物質交換.大多數真覈生物參與細胞覈覈膜運輸的大分子具有保守性,這些細胞覈組分的突變會損害植物體防禦信號的傳導,因此覈質交換在植物先天性免疫中起重要作用.細胞覈覈膜對于防禦調節因子在空間上的相互隔離,以及細胞受到外界刺激後相應調節因子受誘導髮生易位進入細胞覈,是植物體中相關防禦基因錶達調控的基礎.病原微生物的無毒蛋白多數作用于植物細胞的細胞覈;寄主的抗性蛋白、免疫元件、轉錄因子、轉錄調控因子等重要成分不斷進行覈質交換,併且這些寄主成分在細胞覈內的積纍量對植物防禦反應的水平起著決定性的影響.這些實事都進一步說明瞭植物細胞覈對于植物與病原微生物之間的相互作用具有重要影響.本文就細胞覈對于植物體與病原微生物之間相互識彆的重要性進行瞭新的論述.
식물세포여동물세포일개기본적공동특정시세포핵여세포질지간도존재착물질교환.대다수진핵생물삼여세포핵핵막운수적대분자구유보수성,저사세포핵조분적돌변회손해식물체방어신호적전도,인차핵질교환재식물선천성면역중기중요작용.세포핵핵막대우방어조절인자재공간상적상호격리,이급세포수도외계자격후상응조절인자수유도발생역위진입세포핵,시식물체중상관방어기인표체조공적기출.병원미생물적무독단백다수작용우식물세포적세포핵;기주적항성단백、면역원건、전록인자、전록조공인자등중요성분불단진행핵질교환,병차저사기주성분재세포핵내적적루량대식물방어반응적수평기착결정성적영향.저사실사도진일보설명료식물세포핵대우식물여병원미생물지간적상호작용구유중요영향.본문취세포핵대우식물체여병원미생물지간상호식별적중요성진행료신적논술.
@@@@The exchanges of components between the cytoplasm and the nucleus exist in both the plant cells and and animal cells. The macromolecules involved in the nuclear membrane transport are conservative in most eukaryotes. These nuclei components mutations impair the signal transduction of plant defense. It indicates that nucleocytoplasmic exchange plays an important role in plants innate immunity. The spatial isolation of defense regulators by the nuclear envelope and stimulus induced nuclear translocation are of great significance to the defense-associated gene regulation in plants. Lots of effectors from various pathogens are targeted to the cell nucleus of host plants. Additionly,the frequent transport of important host factors,like R proteins, immunity components,transcription factors and transcriptional regulators between the cytoplasm and the nucleus,and their amounts in the nuclear determine the defense response of the host plants. All the facts show the importance of the nucleus in the interaction between plants and pathogens. This paper makes a summary of recent discoveries that show the significant role of nucleus played in the mutual recognition between pathogens and plants.