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Morphological, functional, compositional and transcriptional constraints shape the distinct venom profiles of the assassin bug Sycanus croceovittatus

文献类型： 外文期刊

作者： Wu, Chaoyan 1 ; Li, Lu 1 ; Wang, Yuqin 1 ; Wei, Shujun 1 ; Zhu, Jiaying 1 ;

作者机构： 1.Southwest Forestry Univ, Key Laboeratory Forest Disaster Warning & Control, Kunming, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Inst Plant Protect, Beijing, Peoples R China

3.Southwest Forestry Univ, Key Lab Forest Resources Conservat & Utilizat Sout, Minist Educ, Kunming, Peoples R China

关键词： Predatory bug; Venom; Bioactivity; Venom heterogeneity; Gene expression profile

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.2； 五年影响因子：7.8 ）

ISSN： 0141-8130

年卷期： 2023 年 250 卷

页码：

收录情况： SCI

摘要： Predatory bugs employ a salivary venom apparatus to generate complex venoms for capturing and digesting prey. The venom apparatus consists of different glands for the production of distinct venom sets, but the underlying mechanisms behind this process remain poorly understood. Here we present a comprehensive analysis of the morphological, functional, compositional and transcriptional characteristics of venoms derived from posterior main gland (PMG), anterior main gland (AMG), and accessory gland (AG) of the assassin bug Sycanus croceovittatus. Structural observations revealed the intricate constructions of the venom apparatus, enabling the production and storage of three distinct venom sets in anatomically varied glands and allowing them to be modulated in a context-dependent manner upon utilization. There were remarkable differences in the biological activities exhibited by PMG, AMG, and AG venoms. Proteotranscriptomic analysis demonstrated that these venoms displayed compositional heterogeneity at both the quantity and variety levels of proteins. Transcriptional profiles of the identified venom proteins revealed gland-specific or biased expression patterns. These findings indicate that the divergence in venom profiles among different glands arises from morphological, functional, compositional and transcriptional constraints on the venom apparatus, reflecting remarkable morphogenesis and regulatory gene networks responsible for the compartmentalized production of venom proteins in different glands.

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