| Changes in flavonoids content and related enzyme activity of sugarcane leaves under PEG stress |
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| DOI：10.7606/j.issn.1000-7601.2009.06.36 |
| Key Words: sugarcane PEG stress flavonoids phenylalanine ammonialyas polyphenol oxidase peroxidase |
| Author Name | Affiliation | | ZHOU Gui | 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 | | LI Yangrui | 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 | | YANG Litao | 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 | | WEI Xuexue | College of Chemistry and Ecological Engineering Guangxi University for Nationalities, Nanning 530006, China | | QIU Peiling | College of Chemistry and Ecological Engineering Guangxi University for Nationalities, Nanning 530006, China |
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| Abstract: |
| 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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