Article (Scientific journals)
Transcriptomic and physiological analysis of the effect of octanoic acid on Meloidogyne incognita.
Wang, Jian-Yu; Li, Qiu-Yue; Ren, Li et al.
2023In Pesticide Biochemistry and Physiology, 193, p. 105432
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Keywords :
Defense response; Meloidogyne incognita; Nematicidal mechanism; Octanoic acid; Transcriptome analysis; Antinematodal Agents; octanoic acid; Caprylates; Animals; Transcriptome; Antinematodal Agents/pharmacology; Gene Expression Profiling; Tylenchoidea; Agronomy and Crop Science; Health, Toxicology and Mutagenesis
Abstract :
[en] Root knot nematodes are the most devastating root pathogens, causing severe damage and serious economic losses to agriculture worldwide. Octanoic acid has been reported as one of the nematicides, and its mode of action is not fully understood. The main objective of this study was to elucidate the effect of octanoic acid on Meloidogyne incognita by transcriptomic analysis combined with physiological and biochemical assays. In the toxicity assays with octanoic acid, the threshold concentration with nematicidal activity and the maximum concentration to which nematodes could respond were 0.03 μL/mL and 0.08 μL/mL respectively. Microscopic observation combined with protein and carbohydrates assays confirmed that the structure of the second-stage juveniles (J2s) was severely disrupted after 72 h of immersion in octanoic acid. Transcriptome analysis has shown that octanoic acid can interfere with the nematode energy metabolism, lifespan and signaling. Although the effects are multifaceted, the findings strongly point to the cuticle, lysosomes, and extracellular regions and spaces as the primary targets for octanoic acid. In addition, nematodes can withstand the negative effects of low concentration of octanoic acid to some extent by up-regulating the defense enzyme system and heterologous metabolic pathways. These findings will help us to explore the nematicidal mechanism of octanoic acid and provide important target genes for the development of new nematicides in the future.
Disciplines :
Microbiology
Biotechnology
Agriculture & agronomy
Author, co-author :
Wang, Jian-Yu;  College of Life Sciences, Shandong Agricultural University, Tai'an 271018, China, Qingdao Zipnow Agricultural Technology Co., Ltd, Qing'dao 266000, China
Li, Qiu-Yue;  College of Life Sciences, Shandong Agricultural University, Tai'an 271018, China
Ren, Li;  College of Resources and Environmental Sciences, China Agricultural University, Bei'jing 100193, China
Guo, Cheng;  College of Life Sciences, Shandong Agricultural University, Tai'an 271018, China
Qu, Jianping ;  Université de Liège - ULiège > TERRA Research Centre > Entomologie, Phytopathologie et Productions Innovantes (EPPI) ; College of Life Sciences, Shandong Agricultural University, Tai'an 271018, China
Gao, Zheng;  College of Life Sciences, Shandong Agricultural University, Tai'an 271018, China. Electronic address: gaozheng@sdau.edu.cn
Wang, Hui-Fang;  Institute of Plant Protection, Hainan Academy of Agricultural Sciences, Hai' kou 571100, China. Electronic address: wanghuifang@hnaas.org.cn
Zhang, Qian;  Shandong Institute of Pomology, Tai'an 271018, China. Electronic address: sdsgsyjs@shandong.cn
Zhou, Bo;  College of Life Sciences, Shandong Agricultural University, Tai'an 271018, China, National Engineering Research Center for Efficient Utilization of Soil and Fertilizer, Tai'an 271018, China. Electronic address: zhoubo@sdau.edu.cn
Language :
English
Title :
Transcriptomic and physiological analysis of the effect of octanoic acid on Meloidogyne incognita.
Publication date :
June 2023
Journal title :
Pesticide Biochemistry and Physiology
ISSN :
0048-3575
eISSN :
1095-9939
Publisher :
Academic Press Inc., United States
Volume :
193
Pages :
105432
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
This work was supported by the Key R&D project of Shandong Province ( 2020CXGC010803 ), Major Applied Agricultural Technology Innovation Projects of Shandong Province ( SD2019ZZ009 ), Key R&D project of Ningxia Hui Autonomous Region ( 2021BBF02006 ), Shandong Provincial Natural Science Foundation , China ( ZR2021MC183 ) and Modern Agricultural Industry Technology System of Shandong Province , China ( SDAIT-06-13 ), National Key Research and Development Program of China (No. 2018YFD0500202 ) and Agriculture Research System of China of MOF and MARA ( CARS-16-E18 ).
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