CAJ | 학술논문

通过测定叶片中叶绿素含量、过氧化氢酶(CAT)、过氧化物酶(POD)和超氧化物歧化酶(SOD)活性、丙二醛(MDA)含量、脯氨酸含量及质膜透性,研究了不同浓度铜胁迫对芦竹幼苗植株的生理指标及富集能力的影响.结果表明:随铜处理浓度的增大,叶片中叶绿素含量、POD、SOD和CAT活性均呈先升高后降低的趋势,当铜处理浓度在100 mg·kg-1时,叶绿素含量、CAT活性达到最大值,而POD、SOD活性在200 mg·kg-1处理时达到最大值.MDA含量、脯氨酸含量及质膜透性均随铜浓度增大而升高,当铜处理浓度在800 mg·kg-1时,叶片中的MDA含量、脯氨酸含量及质膜透性达到最大值.检测芦竹中铜含量的分布规律为根(地下部分)＞茎、叶(地上部分),当铜处理浓度未达800 mg·kg-1时,转运系数小于1,富集系数大于1.结果表明芦竹对铜污染土壤具有一定耐受力.
통과측정협편중협록소함량、과양화경매(CAT)、과양화물매(POD)화초양화물기화매(SOD)활성、병이철(MDA)함량、포안산함량급질막투성,연구료불동농도동협박대호죽유묘식주적생리지표급부집능력적영향.결과표명:수동처리농도적증대,협편중협록소함량、POD、SOD화CAT활성균정선승고후강저적추세,당동처리농도재100 mg·kg-1시,협록소함량、CAT활성체도최대치,이POD、SOD활성재200 mg·kg-1처리시체 도최대치.MDA함량、포안산함량급질막투성균수동농도증대이승고,당동처리농도재800 mg·kg-1시,협편중적MDA함량、포안산함량급질막투성체도최대치.검측호죽중동함량적분포규률위근(지하부분)＞경、협(지상부분),당동처리농도미체800 mg·kg-1시,전운계수소우1,부집계수대우1.결과표명호죽대동오염토양구유일정내수력.
To determine the tolerance and phytoaccumulation ability of Arundo donax to copper (Cu),the effects of exogenous Cu treatments on chlorophyll content,activities of catalase ( CAT),peroxidase (POD) and superoxide dismutase (SOD),malondialdehyde (MDA) content,protein content and plasma membrane permeability were examined.Chlorophyll content and the activities of CAT,POD and SOD increased firstly then declined significantly.When Cu concentration was 100 mg · kg1,the chlorophyll content and the activity of CAT were the highest,while the activities of POD and SOD reached maximum when Cu concentration was 200 mg · kg-1.MDA content,Pro content and plasma membrane permeability increased with increasing concentration,and maximality was found at 800 mg · kg-l Cu.The total Cu content was higher in roots (underground part) than in stems and leaves (aboveground part).The translocation factors of Cu were all below one,while the accumulation coefficient were above one,when plants were not subjected to less than 800 mg · kg-1Cu treatment.Our results suggested A.donax was a tolerant plant species to copper.