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Relationships Among the Feeding Behaviors of a Mirid Bug on Cotton Leaves of Different Ages and Plant Biochemical Substances
Journal of Insect Science ( IF 2.2 ) Pub Date : 2021-01-16 , DOI: 10.1093/jisesa/ieab007
Haiyan Song 1 , Zhaoke Dong 2 , Lili Li 1 , Zengbin Lu 3 , Chao Li 1 , Yi Yu 1 , Xingyuan Men 1
Affiliation  

Apolygus lucorum (Meyer-Dür) (Hemiptera: Miridae) tends to feed on young plant tissues. To explore the relationship between stylet probing behaviors of adult A. lucorum and conditions of cotton leaves, we conducted an experiment using electropenetrography (EPG). Behaviors were recorded on four cotton varieties, in relation to thickness and biochemical traits of differently-aged leaves. Cotton leaf age had a significant effect on the probing behavior of A. lucorum but cotton variety did not. One-day-old leaves of A. lucorum received the highest mean number of stylet probes (penetrations) per insect, and longest mean durations per insect of combined stylet probing or its components, cell rupture and ingestion behaviors. All of the leaf traits (thickness and biochemical substances) were similar among these four cotton varieties. Leaf thickness had a significantly negative effect on the same four variables above. Gossypol and tannin also had a negative impact on combined probing duration. Redundancy analysis showed that the four EPG variables were closely related to nutrient substances (amino acids, sugar, and water) while they had the opposite relationship with plant defense substances (gossypol and tannin). On cotton in the seedling stages, A. lucorum fed more readily on the youngest, thinnest leaves in our no-choice EPG experiments. Nutrients and chemical resistance substances determined the probing duration of A. lucorum. Our findings can contribute to better understanding of patterns of feeding and host consumption by A. lucorum, ultimately improving cotton resistance to A. lucorum.

中文翻译:

不同年龄棉叶蝽取食行为与植物生化物质的关系

Apolygus lucorum (Meyer-Dür) (Hemiptera: Miridae) 倾向于以幼小的植物组织为食。为了探讨成虫 A. lucorum 的探针探测行为与棉叶状况之间的关系,我们使用电子穿透描记法 (EPG) 进行了实验。在四个棉花品种上记录了与不同年龄叶片的厚度和生化特征相关的行为。棉花叶龄对A. lucorum的探测行为有显着影响,而棉花品种则没有。A. lucorum 一天大的叶子每只昆虫的探针(穿透)平均数最高,每只昆虫的组合探针或其成分、细胞破裂和摄取行为的平均持续时间最长。这四个棉花品种的所有叶片性状(厚度和生化物质)都相似。叶片厚度对上述相同的四个变量有显着的负面影响。棉酚和单宁也对联合探测持续时间产生负面影响。冗余分析表明,EPG 4个变量与营养物质(氨基酸、糖和水)密切相关,而与植物防御物质(棉酚和单宁)的关系相反。在幼苗阶段的棉花上,在我们的无选择 EPG 实验中,A. lucorum 更容易以最年轻、最薄的叶子为食。营养素和耐化学性物质决定了 A. lucorum 的探测时间。我们的研究结果有助于更好地了解 A. lucorum 的摄食和宿主消费模式,最终提高棉花对 A. lucorum 的抗性。棉酚和单宁也对联合探测持续时间产生负面影响。冗余分析表明,EPG 4个变量与营养物质(氨基酸、糖和水)密切相关,而与植物防御物质(棉酚和单宁)的关系相反。在幼苗阶段的棉花上,在我们的无选择 EPG 实验中,A. lucorum 更容易以最年轻、最薄的叶子为食。营养素和耐化学性物质决定了 A. lucorum 的探测时间。我们的研究结果有助于更好地了解 A. lucorum 的摄食和宿主消费模式,最终提高棉花对 A. lucorum 的抗性。棉酚和单宁也对联合探测持续时间产生负面影响。冗余分析表明,EPG 4个变量与营养物质(氨基酸、糖和水)密切相关,而与植物防御物质(棉酚和单宁)的关系相反。在幼苗阶段的棉花上,在我们的无选择 EPG 实验中,A. lucorum 更容易以最年轻、最薄的叶子为食。营养素和耐化学性物质决定了 A. lucorum 的探测时间。我们的研究结果有助于更好地了解 A. lucorum 的摄食和宿主消费模式,最终提高棉花对 A. lucorum 的抗性。和水),而它们与植物防御物质(棉酚和单宁)的关系相反。在幼苗阶段的棉花上,在我们的无选择 EPG 实验中,A. lucorum 更容易以最年轻、最薄的叶子为食。营养素和耐化学性物质决定了 A. lucorum 的探测时间。我们的研究结果有助于更好地了解 A. lucorum 的摄食和宿主消费模式,最终提高棉花对 A. lucorum 的抗性。和水),而它们与植物防御物质(棉酚和单宁)的关系相反。在幼苗阶段的棉花上,在我们的无选择 EPG 实验中,A. lucorum 更容易以最年轻、最薄的叶子为食。营养素和耐化学性物质决定了 A. lucorum 的探测时间。我们的研究结果有助于更好地了解 A. lucorum 的摄食和宿主消费模式,最终提高棉花对 A. lucorum 的抗性。
更新日期:2021-01-16
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