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- W2383894577 abstract "A solution culture was conducted to study the effect of aluminum(Al)on a tolerant genotype(XZY2)and a sensitive genotype(ZS758)of oilseed rape. The biomass growths, Al-accumulations, activities of protective enzymes and contents of MDA and proline in leaves of oilseed rape seedlings were investigated. The results showed, after being treated 7 d, the dry weight of root and shoot and biomass of XZY2 decreased significantly by 13%~36%, 13%~36% and 5%~17%, the corresponding decrease for ZS758 were 30%~53%, 12%~20% and 16%~28%, respectively. The decrease of biomass was more significant in 7 d treatment than in 14 d treatment and the ratio of root/shoot decreased with the increasing Al3+ in culture solution and treated time and the plant height decreased simultaneously with the same trends. Al contents in roots of both varieties increased under Al stress, which were much higher in Al-sensitive genotypes XZY2(3.94~5.88 μg·g-1)than in Al-tolerant ZS758(4.96~7.54 μg·g-1)in 7 d treatments, and were even higher after being treated for 14 d. The protective enzymes were activated by Al, especially the SOD, after being treated by 200 μmol·L-1 Al3+ for 7 d and 14 d, the SOD activities increased 2.50 times and 2.03 times in XZY2 and 2.02 times and 1.83 times in ZS758, respectively;In contrast to SOD, CAT and POD were less affected by Al stress. In addition, compared to 7 d treatment, the activities of SOD and CAT decreased but that of POD increased after 14 d treatment. With the increased Al3+ concentrations in culture media, the content of MDA in leaves was lower in the XZY2 than in ZS758, while higher content of proline were observed in XZY2. It suggested that tolerance of XZY2 to Al than ZS758 was partially achieved by excluding Al from root tip and increasing the protective enzymes activity or proline contents in leaves of oilseed rape." @default.
- W2383894577 created "2016-06-24" @default.
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- W2383894577 date "2008-01-01" @default.
- W2383894577 modified "2023-09-23" @default.
- W2383894577 title "Response of Biomass,Al-accumulation and Protective Enzyme System of Oilseed Rape to Aluminum Stress" @default.
- W2383894577 hasPublicationYear "2008" @default.
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