CAJ | 학술논문

启动子是调控基因表达的重要顺式元件,在植物基因表达调控过程中起着重要作用.目前植物抗逆基因工程中,人们大多使用组成型表达启动子驱动目的基因的表达.组成型表达启动子虽然能提高转基因植株的抗逆性,但是其持续过量地表达转化的外源基因会阻碍植物的生长且减少其产量.因此.只在胁迫条件下才会驱动外源基因表达的诱导型启动子的研究显得尤其重要,已成为目前研究的热点.文章综述了受非生物逆境和生物逆境胁迫诱导的植物基因启动子的种类和功能,并展望了植物逆境诱导启动子的研究方向和前景.
계동자시조공기인표체적중요순식원건,재식물기인표체조공과정중기착중요작용.목전식물항역기인공정중,인문대다사용조성형표체계동자구동목적기인적표체.조성형표체계동자수연능제고전기인식주적항역성,단시기지속과량지표체전화적외원기인회조애식물적생장차감소기산량.인차.지재협박조건하재회구동외원기인표체적유도형계동자적연구현득우기중요,이성위목전연구적열점.문장종술료수비생물역경화생물역경협박유도적식물기인계동자적충류화공능,병전망료식물역경유도계동자적연구방향화전경.
Promoter is an important cis-regulatory element for gene expression and plays an important role in the process of plant gene expression and regulation.Constitutive promoters are being used to drive alien gene expression in most transgenic engineering.Although constitutive promoters can improve resistance of transgenic plants to abiotic stresses,over-and constitutive-expression of the alien genes have been shown to cause stunted growth and reduction of yield in transgenic plants.Therefore,inducible promoters,which are expressed only when exposed to stresses,are of importance.This paper reviews the types and functions of plant gene promoters induced by bio-and abio-stresses.The prospect of stress-induced promoters was discussed.