CAJ | 학술논문

研究了甘氨酸预处理对降低中华羊茅幼苗热胁迫的保护性作用.甘氨酸预处理降低了活性氧水平,保护了热胁迫下幼苗细胞膜的完整性,因而降低了植株根系细胞的死亡率.研究表明:甘氨酸预处理可以提高幼苗超氧化物歧化酶(SOD),过氧化氢酶(CAT)和抗坏血酸过氧化物酶(APX)的活性.半定量RT-PCR分析表明甘氨酸预处理幼苗中CAT基因的表达比对照高.讨论了抗氧化酶活性在甘氨酸调节热胁迫中的作用.
연구료감안산예처리대강저중화양모유묘열협박적보호성작용.감안산예처리강저료활성양수평,보호료열협박하유묘세포막적완정성,인이강저료식주근계세포적사망솔.연구표명:감안산예처리가이제고유묘초양화물기화매(SOD),과양화경매(CAT)화항배혈산과양화물매(APX)적활성.반정량RT-PCR분석표명감안산예처리유묘중CAT기인적표체비대조고.토론료항양화매활성재감안산조절열협박중적작용.
The protective effects of glycine on alleviating the heat stress of Festuca sinensis Keng seedlings were investigated. It was found that glycine pretreatment reduced the reactive oxygen species (ROS) level and protected the plasma membrane integrity of seedlings under heat stress,thus reducing cell death of the roots exposed to high temperature stress. Further study indicated that glycine pretreatment improved the activities of superoxide dismutase (SOD),catalase (CAT) and ascorbate peroxidase (APX) in the seedlings.Semi-quantitative RT-PCR analysis indicated that the transcripts of CAT gene in glycine pretreated-seedlings were higher compared to untreated control seedlings under heat stress. The involvement of antioxidative enzymes activities in glycine-mitigated heat stress was also discussed.