Advancement in Mechanism of Vegetable Pest Catastrophe and Green Prevention and Control

A special issue of Horticulturae (ISSN 2311-7524). This special issue belongs to the section "Insect Pest Management".

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 2048

Special Issue Editors


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Guest Editor
Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Interests: vegetable pest; catastrophe mechanism; pest control; insecticide resistance; insect-plant interaction

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Guest Editor
Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Guangzhou 510642, China
Interests: vegetable pest; RNA interference; insect physiology; insect biosafety

Special Issue Information

Dear Colleagues,

Vegetable crops always suffer from insect pest attacks, which regularly causes 10–20% crop losses, and with the ongoing global warming, such attacks pose a real threat to the world’s vegetable production security. Thus, we need to elucidate how and why these notorious vegetable pests damage their host crops, which is quite important for developing novel green pest prevention and control strategies.

The purpose of this Special Issue on “Advancement in Mechanism of Vegetable Pest Catastrophe and Green Prevention and Control” aims to present state-of-the-art theories and techniques recently developed by researchers for vegetable pest management worldwide. Innovative articles on vegetable pests are welcome in this Special Issue.

Prof. Dr. Zhaojiang Guo
Dr. Huipeng Pan
Guest Editors

Manuscript Submission Information

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Keywords

  • vegetable pest
  • catastrophe mechanism
  • pest control
  • biological control
  • xenobiotic resistance
  • RNA interference
  • insect-plant interaction
  • insect physiology

Published Papers (2 papers)

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Research

11 pages, 1952 KiB  
Article
Identification of an Entomopathogenic Fungus, Pseudozyma flocculosa (Traquair, Shaw & Jarvis), and Its Efficacy against Tetranychus urticae Koch
by Yan Zhang, Rui Dong, Shouyin Hu, Zhaojiang Guo and Shaoli Wang
Horticulturae 2024, 10(3), 221; https://doi.org/10.3390/horticulturae10030221 - 25 Feb 2024
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Abstract
The two-spotted spider mite, Tetranychus urticae Koch, is one of the most important agricultural pests worldwide, with chemical application being the primary control method. However, frequent heavy use or misuse of insecticides has accelerated the development of varying degrees of resistance in T. [...] Read more.
The two-spotted spider mite, Tetranychus urticae Koch, is one of the most important agricultural pests worldwide, with chemical application being the primary control method. However, frequent heavy use or misuse of insecticides has accelerated the development of varying degrees of resistance in T. urticae. This makes the chemical control of this mite more challenging. Biocontrol methods have attracted much attention due to their safety and environment-friendly impact. Based on previous observations that the population of T. urticae was infected by unknown pathogenic fungi, we isolated, identified, and evaluated the pathogenicity of the fungi from infected mites. Through available morphological and molecular identification, the fungus was identified as Pseudozyma flocculosa. The virulence activity of the strain was evaluated at different concentrations of spore suspension (106–109 conidia/mL) using a spraying method. The strain showed pathogenic activity against the T. urticae in adult females that varied with different concentrations and temperatures. Meanwhile, the P. flocculosa also had a significant toxic effect on the developmental stages of T. urticae. In the laboratory bioassay, the mortality rate of the tested mites reached 100% at 9 d after P. flocculosa treatment. Additionally, a wettable powder processed with P. flocculosa conidia was applied on the T. urticae in the greenhouse and the control efficacy reached up to 90% at 7 d after treatment. The results showed a high insecticidal activity of P. flocculosa against T. urticae, indicating that this fungus possesses great potential for use as a bio-insecticidal agent. Full article
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12 pages, 1947 KiB  
Article
Splicing and Expression Regulation of fruitless Gene in Bemisia tabaci (Hemiptera: Aleyrodidae)
by Yating Liu, Jinxi Xie, Wenlu Wang, Yanyuan Lei, Xuguo Zhou, Youjun Zhang and Wen Xie
Horticulturae 2023, 9(9), 962; https://doi.org/10.3390/horticulturae9090962 - 24 Aug 2023
Cited by 1 | Viewed by 774
Abstract
The fruitless (fru) gene is a key factor in controlling sexual behavior in insects. The homolog of fru has been identified in most insect species and exhibits conservation in the transcript architecture and regulation of male sexual behavior. However, the structure [...] Read more.
The fruitless (fru) gene is a key factor in controlling sexual behavior in insects. The homolog of fru has been identified in most insect species and exhibits conservation in the transcript architecture and regulation of male sexual behavior. However, the structure of fru transcripts in Hemiptera remains unknown. Here, we identified and characterized two fru transcripts in Bemisia tabaci, named fru-a and fru-b. fru-a contained a 1263 bp open reading frame (ORF) encoding for 420 amino acids, while fru-b contained a 1143 bp ORF encoding for 380 amino acids. These two proteins start with the same BTB domain and end with two different zinc finger domains, belonging to ZnA and ZnG, respectively. The expression of fru-a and fru-b differed significantly between females and males, and both were expressed at lower levels in males. We demonstrated the presence of multiple TRA/TRA-2 binding sites and alternative splicing in fru-a and fru-b. Moreover, the RNAi result provided evidence that transformer regulates the expression of fru-a and fru-b. These results promote the study of the sex determination cascade in B. tabaci and lay the foundation for the study of sexual behavior in this insect. Full article
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