CAJ | 학술논문

三裂叶豚草(A mbrosia trifida)是一种外来入侵杂草。采用盆栽方法研究三裂叶豚草在不同土壤水分含量条件下叶片生物膜伤害、活性氧代谢和抗氧化酶活性的变化。结果表明，在干旱胁迫下，三裂叶豚草的外渗电导率、丙二醛(MDA)含量、超氧阴离子(O2?-)产生速率和过氧化氢(H2O2)含量均显著增加；超氧化物歧化酶(SOD)和过氧化氢酶(CAT)活性显著降低；过氧化物酶(POD)活性在轻度干旱胁迫下显著降低，在重度干旱胁迫下显著升高。水分过量条件下，三裂叶豚草叶片的外渗电导率、MDA含量、活性氧(O2?-和H2O2)水平和抗氧化酶(SOD、CAT和POD)活性无显著变化。说明三裂叶豚草对干旱胁迫较为敏感，而对过量的土壤水分条件适应性较强。
삼렬협돈초(A mbrosia trifida)시일충외래입침잡초。채용분재방법연구삼렬협돈초재불동토양수분함량조건하협편생물막상해、활성양대사화항양화매활성적변화。결과표명，재간한협박하，삼렬협돈초적외삼전도솔、병이철(MDA)함량、초양음리자(O2?-)산생속솔화과양화경(H2O2)함량균현저증가；초양화물기화매(SOD)화과양화경매(CAT)활성현저강저；과양화물매(POD)활성재경도간한협박하현저강저，재중도간한협박하현저승고。수분과량조건하，삼렬협돈초협편적외삼전도솔、MDA함량、활성양(O2?-화H2O2)수평화항양화매(SOD、CAT화POD)활성무현저변화。설명삼렬협돈초대간한협박교위민감，이대과량적토양수분조건괄응성교강。
Ragweed(Ambrosia trifida) is a major invasive plant in China. Potted experiments were made to study the changes of biological membrane damage, reactive oxygen species metabolism and antioxidant enzyme activities in leaves of Ambrosia trifida under different water conditions. The results showed that electrolyte leakage, MDA content, O2?- generating rate and H2O2 content increased significantly and SOD and CAT activities decreased significantly under drought stress. POD activity de-creased significantly under mild drought stress and increased significantly under severe drought stress. Under excessive water conditions, there are no significant changes in leaves of electrolyte leakage, MDA content, reactive oxygen species (O2?- and H2O2) levels and antioxidant enzymes (SOD, CAT and POD) activities. It is indicated that Ambrosia trifida is sensitive to drought stress and has strong adaptability to excessive soil moisture conditions.