周桂,李杨瑞,杨丽涛,韦雪雪,丘佩玲.干旱胁迫下甘蔗叶类黄酮及相关酶活性的变化[J].干旱地区农业研究,2009,27(6):185~188
干旱胁迫下甘蔗叶类黄酮及相关酶活性的变化
Changes in flavonoids content and related enzyme activity of sugarcane leaves under PEG stress
  
DOI：10.7606/j.issn.1000-7601.2009.06.36
中文关键词:  甘蔗  聚乙二醇胁迫  类黄酮  苯丙氨酸解氨酶  多酚氧化酶  过氧化物酶
英文关键词:sugarcane  PEG stress  flavonoids  phenylalanine ammonialyas  polyphenol oxidase  peroxidase
基金项目:国家科技支撑计划项目(2007BAD30B03)； 广西科技攻关项目(0782004-3)
作者单位
周桂 Guangxi Key Laboratory of Subtropical Bioresources Conservation and Utilization Guangxi University, Nanning 530005, China；College of Chemistry and Ecological Engineering Guangxi University for Nationalities, Nanning 530006, China；Guangxi Crop Genetic I mprovement and Biotechnology Lab Guangxi Academy of Agricultural Sciences, Nanning 530007, China；Sugarcane Research Center Chinese Academy of Agricultural Sciences, Nanning 530007, China 
李杨瑞 Guangxi Key Laboratory of Subtropical Bioresources Conservation and Utilization Guangxi University, Nanning 530005, China；Guangxi Crop Genetic I mprovement and Biotechnology Lab Guangxi Academy of Agricultural Sciences, Nanning 530007, China；Sugarcane Research Center Chinese Academy of Agricultural Sciences, Nanning 530007, China 
杨丽涛 Guangxi Key Laboratory of Subtropical Bioresources Conservation and Utilization Guangxi University, Nanning 530005, China；Sugarcane Research Center Chinese Academy of Agricultural Sciences, Nanning 530007, China 
韦雪雪 College of Chemistry and Ecological Engineering Guangxi University for Nationalities, Nanning 530006, China 
丘佩玲 College of Chemistry and Ecological Engineering Guangxi University for Nationalities, Nanning 530006, China 
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中文摘要:
      以两个抗旱性不同的甘蔗品种ROC22和ROC16为试材,采用聚乙二醇模拟干旱胁迫,研究了甘蔗幼苗在干旱胁迫下叶片中类黄酮含量及相关酶活性的变化。结果表明,与对照相比,10%PEG胁迫2 h至14 h,耐旱性强的ROC22品种类黄酮含量降低,耐旱性弱的ROC16品种类黄酮含量先降后升;2个品种幼苗叶片中苯丙氨酸解氨酶活性呈现先降低后升高的变化规律。ROC22叶片多酚氧化酶活性呈先升后降的变化,ROC16叶片多酚氧化酶活性下降;2个品种甘蔗叶过氧化物酶活性持续下降。
英文摘要:
      The content of flavonoids and related enzyme activities in the young plants were studied in order to analyze the effect of PEG treatment on drought resistance of two sugarcane cultivars ROC22 and ROC16.The results indicated as follows: PEG stress could decrease the content of flavonoids in ROC22 with high drought-resistance,whereas the content of flavonoids in ROC16 with low drought-resistance showed decreasing first and increasing later.During the course of PEG stress,the phenylalanine ammonialyase activity in ROC22 and ROC16 decreased for some time but increased afterwards.The polyphenol oxidase activity showed rising first and dropping later in ROC22 but always decreasing in ROC16.The peroxidase activities in ROC22 and ROC16 decreased continuously.
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