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当前位置: 首页 > 文章 > 不同浓度镉处理对耐盐水稻生长及斜纹夜蛾酶活的影响 中国农学通报 2024 (3) 120-127
Position: Home > Articles > Effects of Different Concentrations of Cadmium on Growth of Salt-Tolerant Rice and Enzyme Activity of Common Cutworm Spodoptera litura(Lepidoptera:Noctuidae) Chinese Agricultural Science Bulletin 2024 (3) 120-127

不同浓度镉处理对耐盐水稻生长及斜纹夜蛾酶活的影响

作  者：
徐进;谭建彬;邓晓瑜;梁锦炀;师沛琼;周鸿凯
单  位：
;广东海洋大学滨海农业学院
关键词：
镉胁迫;耐盐水稻;生长发育;斜纹夜蛾;酶活性
摘  要：
为了研究不同浓度的镉胁迫对耐盐水稻生长及昆虫解毒酶的影响,以耐盐水稻品种'海红-12'为材料,用不同浓度(1.5、3、6、15 mg/kg)的氯化镉溶液分别处理4、7、12、17、22 d,测定了不同浓度、不同时间镉处理下耐盐水稻幼苗株高、根长、叶绿素含量以及以处理水稻植株为食的斜纹夜蛾幼虫乙酰胆碱酯酶和羧酸酯酶的活性.结果表明,镉胁迫下,耐盐水稻株高、根长受镉浓度和时间效应的双重影响,较低浓度(1.5、3 mg/kg)镉溶液对水稻生长的抑制作用在处理期间间歇性呈现,较高浓度(6、15 mg/kg)镉溶液的抑制作用则持续出现.随着镉处理浓度的升高,耐盐水稻的叶绿素含量随时间的推移持续降低.取食不同浓度镉处理水稻幼苗的斜纹夜蛾幼虫,乙酰胆碱酯酶活性随镉处理浓度的升高而降低,但羧酸酯酶活性升高.镉溶液抑制耐盐水稻幼苗的生长,且抑制作用随镉溶液浓度的增大而增强,取食受镉处理的耐盐水稻幼苗,植食性害虫体内解毒酶活性产生不同趋势的变化.研究结果可为优化耐盐水稻种植栽培条件提供数据支撑,为进一步研究耐盐水稻-昆虫对重金属富集的反应机制提供理论依据.
译  名：
Effects of Different Concentrations of Cadmium on Growth of Salt-Tolerant Rice and Enzyme Activity of Common Cutworm Spodoptera litura(Lepidoptera:Noctuidae)
单  位：
College of Coastal Agricultural Sciences,Guangdong Ocean University,Zhanjiang,Guangdong 524088;South China Branch of National Saline-Alkali Tolerant Rice Technology Innovation Center,Zhanjiang,Guangdong 524088
关键词：
cadmium stress%salt-tolerant rice%growth condition%Spodoptera litura%enzyme activity
摘  要：
To investigate the impact of varying concentrations of cadmium on the growth of salt-tolerant rice and enzyme activity in insects,the salt-tolerant rice variety'Haihong-12'was treated with cadmium chloride solution of different concentrations(1.5,3,6,15 mg/kg)for 4,7,12,17,22 days,respectively,the plant height,root length,chlorophyll content of salt-tolerant rice seedlings and the activities of acetyl cholinesterase and carboxyl esterase of Spodoptera litura larvae fed on treated rice plants were measured under different concentrations and different time of cadmium treatment.The results indicate that the growth of salt-tolerant rice,including plant height and root length,is influenced by both cadmium concentration and time under cadmium stress.The inhibitory effect of a low concentration(1.5,3 mg/kg)cadmium solution on rice growth was observed intermittently during the treatment period,whereas the inhibitory effect of a high concentration(6,15 mg/kg)cadmium solution persisted.The chlorophyll content of salt-tolerant rice and the acetyl cholinesterase activity of Spodoptera litura larvae decreased with increasing cadmium concentration,while the carboxyesterase activity of Spodoptera litura larvae increased.The growth of salt-tolerant rice seedlings was impeded by cadmium solution,and the inhibitory effects were intensified with increasing concentrations of cadmium solution.Phytophagous pests exhibited varying trends in detoxification enzyme activities when fed on salt-tolerant rice seedlings treated with cadmium.The results could provide supportive data for optimizing the cultivation conditions of salt-tolerant rice and provide a theoretical basis for further research on the reaction mechanism of heavy metal enrichment in salt-tolerant rice-insect interaction.

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