本文選題：水稻幼苗　切入點(diǎn)：鈰　出處：《環(huán)境化學(xué)》2016年12期 　論文類(lèi)型：期刊論文

【摘要】：為進(jìn)一步了解鈰(Ce~(3+))對(duì)酸雨脅迫下植物的作用,采用溶液培養(yǎng)法探究Ce~(3+)對(duì)酸雨脅迫下水稻幼苗(30 d)的抗氧化酶系統(tǒng)(過(guò)氧化物酶POD、超氧化物歧化酶SOD)、丙二醛(MDA)、氧自由基產(chǎn)生速率、硝酸還原酶(NR)、質(zhì)膜透性和葉綠素含量的影響.結(jié)果顯示,與對(duì)照相比,模擬酸雨(pH 3.0)脅迫下,水稻幼苗NR活性和葉綠素含量降低,POD、SOD、MDA、質(zhì)膜透性和氧自由基產(chǎn)生速率升高;在水稻葉面噴施30 mg·L~(-1)Ce~(3+)后,與酸雨組相比,防護(hù)組與修復(fù)組NR活性、葉綠素含量提高,POD、SOD、MDA、質(zhì)膜透性和氧自由基產(chǎn)生速率降低.酸雨影響植物生長(zhǎng)代謝,不利于植物健康生長(zhǎng).30 mg·L~(-1)Ce~(3+)對(duì)酸雨脅迫下水稻幼苗各生理指標(biāo)具有改善作用,可以減輕酸雨對(duì)植物的危害,而不同指標(biāo)防護(hù)與修復(fù)的作用不同.
[Abstract]:In order to further understand the effect of cerium cerifera on plants under acid rain stress, The antioxidant enzyme system (peroxidase POD, superoxide dismutase (SOD), malondialdehyde (malondialdehyde) MDAA) in rice seedlings under acid rain stress for 30 days was investigated by solution culture. The results showed that the NR activity and chlorophyll content of rice seedlings decreased under simulated acid rain (pH 3.0) stress, and the plasma membrane permeability and oxygen free radical production rate increased. Compared with acid rain group, the NR activity, chlorophyll content, plasma membrane permeability and oxygen free radical production rate of the protective group and the repair group were increased, the plasma membrane permeability and oxygen free radical production rate were decreased, and acid rain affected plant growth and metabolism. The physiological indexes of rice seedlings under acid rain stress were improved, and the harm of acid rain to plants was alleviated, but the protective and repair effects of different indexes were different.
【作者單位】： 蘇州科技大學(xué)化生學(xué)院;
【基金】：蘇州市科技計(jì)劃項(xiàng)目(SYN201413) 江蘇省教育廳“高等學(xué)校大學(xué)生實(shí)踐創(chuàng)新訓(xùn)練”(2014058)資助~~
【分類(lèi)號(hào)】：X517;S511

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