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Shi XX, Zhang H, Quais MK, Chen M, Wang N, Zhang C, Mao C, Zhu ZR. Knockdown of sphingomyelinase (NlSMase) causes ovarian malformation of brown planthopper, Nilaparvata lugens (Stål). INSECT MOLECULAR BIOLOGY 2022; 31:391-402. [PMID: 35156743 DOI: 10.1111/imb.12767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 12/16/2021] [Accepted: 02/08/2022] [Indexed: 06/14/2023]
Abstract
Sphingomyelinases (SMases) are a group of enzymes that catalyse the hydrolysis of sphingomyelins into ceramides and phosphorylcholine. They have been intensively investigated for their pathophysiological roles in mammals whereas much remains unclear about their counterparts in insects. Herein we report the cloning and functional characterization of four SMase homologue genes, designated NlSMase1-4, from brown planthopper (BPH). The phylogenetic analysis revealed that NlSMase1 and NlSMase2 were clustered into acid SMase family, and NlSMase3 and NlSMase4 with neutral SMase family. NlSMase1, NlSMase3 and NlSMase4 were highly expressed in BPH females, and NlSMaes2 in the 5th instar nymph. All four NlSMases had the lowest transcription in BPH males. NlSMase1 and NlSMase4 were highly expressed in BPH ovaries, while NlSMase2 and NlSMase3 in midgut and wings, respectively. Knocking-down of each NlSMase individual by RNA interference (RNAi) caused the ovarian malformation in BPH. The transcriptomic analysis revealed that NlSMase4 knockdown could strongly affect diacylglycerol (DAG)-related metabolisms and their downstream pathways. Further, qRT-PCR analysis of vitellogenin (Vg) genes indicates that the DAG metabolism disorder could interrupt the essential Vg accumulation for BPH oogenesis. Our study demonstrates the vital role of NlSMases in BPH reproductive development and provides new insights into the mediated mechanism of how SMases function.
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Affiliation(s)
- Xiao-Xiao Shi
- State Key Laboratory of Rice Biology; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, and Institute of Insect Sciences, Zhejiang University, Hangzhou, Zhejiang, China
- Institute for Intelligent Bio/Chem Manufacturing (iBCM), ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, Zhejian, China
| | - He Zhang
- State Key Laboratory of Rice Biology; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, and Institute of Insect Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Md Khairul Quais
- State Key Laboratory of Rice Biology; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, and Institute of Insect Sciences, Zhejiang University, Hangzhou, Zhejiang, China
- Senior Scientific Officer, Rice Farming Systems Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh
| | - Ming Chen
- State Key Laboratory of Rice Biology; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, and Institute of Insect Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Ni Wang
- State Key Laboratory of Rice Biology; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, and Institute of Insect Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Chao Zhang
- State Key Laboratory of Rice Biology; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, and Institute of Insect Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Cungui Mao
- Department of Medicine and Stony Brook Cancer Center, Stony Brook University, Stony Brook, New York, USA
| | - Zeng-Rong Zhu
- State Key Laboratory of Rice Biology; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, and Institute of Insect Sciences, Zhejiang University, Hangzhou, Zhejiang, China
- Hainan Research Institute, Zhejiang University, Sanya, Hainan, China
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The cellular and molecular origins of extracellular vesicles released by the helminth pathogen, Fasciola hepatica. Int J Parasitol 2020; 50:671-683. [DOI: 10.1016/j.ijpara.2020.03.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 03/23/2020] [Accepted: 03/25/2020] [Indexed: 12/20/2022]
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