| 陈瑞瑞1，崔金杰2，李国清1*.青霉素影响甜菜夜蛾幼虫耐受几种苏云金杆菌晶体蛋白的能力[J].植物保护,2011,37(6):112-114. |
| 青霉素影响甜菜夜蛾幼虫耐受几种苏云金杆菌晶体蛋白的能力 |
| Penicillin ingestion influences toxic effects of several Cry toxins from Bacillus thuringiensis on Spodoptera exigua larvae |
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| 中文关键词: |
| 英文关键词:Bacillus thuringiensis Cry toxin Spodoptera exigua penicillin toxicity |
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| 中文摘要: |
| 本文评估了Cry1Ab、Cry1Ba和Cry1Ca蛋白对甜菜夜蛾2龄幼虫的毒力，其LC50分别为0.442 5、0.675 7 μg/cm2和0.150 2 μg/cm2，Cry1Ba毒力最低，其次是Cry1Ab，而Cry1Ca毒力最高。青霉素影响幼虫对晶体毒素的耐受能力；一次添加高剂量(500 μg/cm2)青霉素于饲料中显著提高幼虫的耐受能力，以含低剂量(60 μg/cm2)青霉素的饲料饲养幼虫多代也能达到相似的效果。 |
| 英文摘要: |
| Toxicities of Cry1Ab, Cry1Ba and Cry1Ca from Bacillus thuringiensis to the 2nd instar larvae of Spodoptera exigua were evaluated. The LC50 values were 0.442 5 μg/cm2, 0.675 7μg/cm2 and 0.150 2 μg/cm2, respectively. Cry1Ba was least toxic, followed by Cry1Ab, and Cry1Ca was most toxic. Penicillin affected larval tolerance to the 3 Cry toxins. At the concentration of 500 μg/cm2, penicillin mixed directly with the toxins could significantly increase larval tolerance. At the concentration of 60 μg/cm2, however, penicillin should be first added alone to the diet for the larvae for several generations to obtain similar tolerance. |
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