| 陈雨萌，黄江南，商小兰，孙睿，毛黎娟，黄越，尉吉乾,2022,水稻中镉积累对粘虫的影响[J].环境昆虫学报,(5):1163-1169 |
| 水稻中镉积累对粘虫的影响 |
| Effect of cadmium accumulation on rice resistance to Mythimna separata |
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| DOI： |
| 中文关键词: 水稻 粘虫 镉 防御反应 酚胺类化合物 |
| 英文关键词:Rice Mythimna separata cadmium defense response phenolamides |
| 基金项目:杭州市农业与社会发展科研项目（20191203B75）；浙江大学实验技术研究项目（SJS201915） |
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| 中文摘要: |
| 水稻中重金属积累如何影响水稻害虫尚不清楚，本文拟探讨镉积累的水稻对粘虫Mythimna separata幼虫的影响。通过测定不同浓度氯化镉处理的水稻以及人工饲料对粘虫幼虫生长发育的影响，并进一步研究了氯化镉处理水稻中粘虫诱导的防御化合物含量的变化。研究表明水稻叶片中镉的积累导致粘虫幼虫生长减慢、死亡率上升。不同浓度镉处理可以显著提高粘虫诱导的酚胺类化合物对香豆酰腐胺、阿魏酰腐胺、肉桂酰腐胺以及阿魏酰胍丁胺的含量。不同浓度镉添加的人工饲料对粘虫幼虫的存活率无显著影响，而粘虫幼虫取食1 μM和10 μM氯化镉添加的人工饲料后体重反而高于取食未含镉的人工饲料。综上所述，镉积累提高了水稻中粘虫诱导的防御化合物的含量以及水稻对粘虫的抗性，研究结果有利于加深水稻与不同环境胁迫关系的认识。 |
| 英文摘要: |
| Whether heavy metal accumulation in rice could influence rice pests remains unclear. We aim to explore rice resistance to Mythimna separata larvae(armyworm) under cadmium accumulation. The armyworm performances on CdCl2-treated plants and artificial diet were conducted. Meanwhile, the armyworm-elicited defensive compounds accumulations in rice were measured after different CdCl2-treatments. The larvae mass and survival rate of armyworm was significantly decreased on Cd-treated plants compared with control plants. Moreover, the armyworm-elicited four phenolamides, p-Coumaroyl puthescine, Feruloyl putrescine, Cinnamoyl putrescine and N-feruloyl agmatine, levels were significantly increased in Cd-treated plants compared with control plants. However, the survival rate of armyworm did not differ between Cd-treated and control artificial diet, and armyworm larvae gained more weight when feeding on 1 μM and 10 μM Cd-treated artificial diet than that on control artificial diet. Our results indicated that cadmium accumulation enhanced armyworm-elicited defensive compounds levels and rice resistance to armyworm. This study increased our understanding of interactions between rice and different environmental factors. |
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