淮阴师范学院学报（自然科学版）
淮陰師範學院學報（自然科學版）
회음사범학원학보（자연과학판）
JOURNAL OF HUAIYIN TEACHERS COLLEGE (NATURAL SCIENCE EDITION)
2015年
1期
52-55
,共4页
硫化氢%水稻%铝胁迫%抗氧化系统
硫化氫%水稻%鋁脅迫%抗氧化繫統
류화경%수도%려협박%항양화계통
hydrogen sulfide%rice%iluminum stress%antioxidant system
硫化氢( H2 S)是植物体内重要的信号分子,可显著缓解重金属对水稻的毒害.以硫氢化钠(NaHS)作为硫化氢的供体,分别采用0．4 mmol/L NaHS,75μmol/L AlCl3,75μmol/L AlCl3+0．4 mmol/L NaHS处理水稻幼苗,测定H2 S对水稻幼苗内氧化还原系统的影响.结果表明,铝胁迫显著增加了水稻幼苗体内过氧化氢和超氧阴离子的含量,以及超氧化物歧化酶( SOD),过氧化氢酶( CAT)等活性氧清除酶系的活性,而施加H2 S供体NaHS显著降低了过氧化氢和超氧阴离子的含量,以及SOD和CAT的活性.
硫化氫( H2 S)是植物體內重要的信號分子,可顯著緩解重金屬對水稻的毒害.以硫氫化鈉(NaHS)作為硫化氫的供體,分彆採用0．4 mmol/L NaHS,75μmol/L AlCl3,75μmol/L AlCl3+0．4 mmol/L NaHS處理水稻幼苗,測定H2 S對水稻幼苗內氧化還原繫統的影響.結果錶明,鋁脅迫顯著增加瞭水稻幼苗體內過氧化氫和超氧陰離子的含量,以及超氧化物歧化酶( SOD),過氧化氫酶( CAT)等活性氧清除酶繫的活性,而施加H2 S供體NaHS顯著降低瞭過氧化氫和超氧陰離子的含量,以及SOD和CAT的活性.
류화경( H2 S)시식물체내중요적신호분자,가현저완해중금속대수도적독해.이류경화납(NaHS)작위류화경적공체,분별채용0．4 mmol/L NaHS,75μmol/L AlCl3,75μmol/L AlCl3+0．4 mmol/L NaHS처리수도유묘,측정H2 S대수도유묘내양화환원계통적영향.결과표명,려협박현저증가료수도유묘체내과양화경화초양음리자적함량,이급초양화물기화매( SOD),과양화경매( CAT)등활성양청제매계적활성,이시가H2 S공체NaHS현저강저료과양화경화초양음리자적함량,이급SOD화CAT적활성.
Hydrogen sulfide (H2S), an important signal molecular in plants, can alleviate the toxicity of metal stress to crops. In this study, the effects of H2 S donor NaHS alleviating AlCl3-induced stress were con-ducted in the leaves of rice seedlings. We examined the metabolic responses of rice seedlings to aluminum stress focusing on reactive oxygen species ( ROS) metabolism including superoxide dismutase and catalase ac-tivity. The observed enzyme activities were higher in aluminum-stressed seedlings than in control plants, NaHS decreased the activities of superoxide dismutase and catalase, and the contents of superoxide radical and hy-drogen peroxide. Taken together these results suggest that H2 S could regulate antioxidant system in rice seed-lings leading to the alleviation of iluminum stress.
