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Agronomy
Special Issues
Ecological Mechanism and Control Technology of Rice Pests
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Ecological Mechanism and Control Technology of Rice Pests

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Pest and Disease Management".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 4330

Special Issue Editors

Prof. Dr. Guoqing Yang

E-Mail Website
Guest Editor
College of Plant Protection, Yangzhou University, Yangzhou 225009, China
Interests: insect ecology; pest control; insect resistance of plants; invasive biology
Dr. Gang Xu

E-Mail Website
Guest Editor
College of Plant Protection, Yangzhou University, Yangzhou 225009, China
Interests: plant protection; insect pest control; insect reproduction; rice virus transmission

Special Issue Information

Dear Colleagues,

Rice pests, such as insect pests, pathogens, and weeds, can reduce the quality and yield of rice, and also threaten ecological safety and biological safety. Climate, rice varieties, cropping systems, and the misusage of pesticides greatly impact the outbreaks of rice pests. Therefore, studies on the ecological mechanism and control technology of rice pests are of great importance.

In recent years, new techniques and methods have been widely used to investigate the various mechanisms in the outbreaks of rice pests. The integrated application of various management methods, including chemical, physical, agricultural, and biological control, as well as resistant rice variety utilization, has improved the control of rice pests. Understanding the ecological mechanism of rice pests also acts as the basis for better control.

This Special Issue will focus on the ecological mechanism of rice pests, as well as the new technology used to control rice pests, such as new insecticides, biological control, and the cultivation of resistant rice varieties. We welcome the submission of original research and review articles.

Prof. Dr. Guoqing Yang
Dr. Gang Xu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • insect pest
  • rice disease
  • weed
  • resistant
  • breeding
  • ecology
  • rice variety
  • pest control
  • pesticide
  • rice cropping system

Published Papers (3 papers)

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Research

16 pages, 2559 KiB  
Article
Effects of Priming Rice Seeds with Decoyinine on Fitness Traits and Virus Transmission Ability of the Small Brown Planthopper, Laodelphax striatellus
by Amir Zaman Shah, Yuanyuan Zhang, Wei Gui, Mingshi Qian, Youxin Yu, Gang Xu and Guoqing Yang
Agronomy 2023, 13(3), 864; https://doi.org/10.3390/agronomy13030864 - 15 Mar 2023
Cited by 3 | Viewed by 1202
Abstract
Laodelphax striatellus is a notorious sap-feeding insect that also serves as a vector of rice stripe virus (RSV) and is responsible for a significant decline in rice yield. Pesticide application remains a crucial strategy for controlling insect pests. In recent years, the utilization [...] Read more.
Laodelphax striatellus is a notorious sap-feeding insect that also serves as a vector of rice stripe virus (RSV) and is responsible for a significant decline in rice yield. Pesticide application remains a crucial strategy for controlling insect pests. In recent years, the utilization of biopesticides has gained attention due to their eco-friendliness and suitability for controlling insect pests and pathogens in agriculture. The present study aimed Figureto evaluate the potential efficacy of a microbial pesticide, decoyinine (DCY), as a seed priming agent in rice against SBPH’s biology, feeding behavior, and RSV transmission ability in the laboratory. Here, we revealed that the body weight of females and males and honeydew extraction of RSV-virulent SBPH were (22.50%, 25.0%, and 23.25%, respectively) significantly lower than non-virulent SBPH. Meanwhile, the fecundity of RSV-virulent SBPH females was significantly higher (8.24%) than non-virulent SBPH. However, nymphal survival and RSV transmission (horizontal and vertical) were found to be non-significantly affected by DCY application. Furthermore, DCY-primed rice seedlings significantly prolonged the time period and frequency of the electrical penetration graph (EPG) feeding waveforms (np, N2, and N3), and also reduced the time period of the waveform (N4-b) for both RSV-virulent and non-virulent SBPH strains with reduced RSV inoculation. The recent study provides new insights for DCY application in rice against SBPH by reducing fecundity, body weight, and honeydew contents, which might contribute to modern integrated pest management. Full article
(This article belongs to the Special Issue Ecological Mechanism and Control Technology of Rice Pests)
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17 pages, 2182 KiB  
Article
Seed Priming of Rice Varieties with Decoyinine Improve Their Resistance against the Brown Planthopper Nilaparvata lugens
by Gang Xu, Shengyao She, Wei Gui, Chao Ma, Yuanyuan Zhang, Mingshi Qian and Guoqing Yang
Agronomy 2023, 13(1), 72; https://doi.org/10.3390/agronomy13010072 - 25 Dec 2022
Cited by 4 | Viewed by 1342
Abstract
The brown planthopper (BPH), Nilaparvata lugens Stål (Hemiptera: Delphacidae) is one of the most destructive rice pests in Asia. The microbial metabolite decoyinine (DCY) has been extracted from Streptomyces hygroscopicus. Recent studies have suggested that treating rice seeds with DCY could improve [...] Read more.
The brown planthopper (BPH), Nilaparvata lugens Stål (Hemiptera: Delphacidae) is one of the most destructive rice pests in Asia. The microbial metabolite decoyinine (DCY) has been extracted from Streptomyces hygroscopicus. Recent studies have suggested that treating rice seeds with DCY could improve the growth and yield of rice. To further assess the effects of priming the seeds of different rice varieties with DCY on rice seedling resistance against BPH, an age-stage, two-sex life table and choice test were applied to investigate the individual fitness, population parameters, and preference behavior of BPHs in this study. The results indicated that feeding on rice seedlings grown from seeds primed with DCY significantly affected BPHs’ adult longevity, oviposition period, fecundity, as well as the net reproductive rate (R0), intrinsic rate of increase (rm), finite rate of increase (λ), doubling time (DT), and population size in terms of BPH. The honeydew excretions and the weights of BPHs fed on DCY-pretreated rice plants were remarkably lowered. The two-way ANOVA results also showed that there were significant differences in the biological parameters, honeydew excretions, and of BPH weights owing to DCY treatment, rice variety, and the interactions between DCY treatment and rice variety. Additionally, the feeding and oviposition preferences of BPHs for the pretreated rice plants were reduced. Our results imply that the priming of seeds with DCY can improve rice resistance against BPH, which could facilitate the utilization of seed priming as a new avenue for effective crop protection. Full article
(This article belongs to the Special Issue Ecological Mechanism and Control Technology of Rice Pests)
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15 pages, 2787 KiB  
Article
Combined Physio-Biochemical and Transcriptome Analyses Illuminate the Resistance Response of Rice Priming with Decoyinine against Nilaparvata lugens
by Chao Ma, Wei Gui, Yuanyuan Zhang, Amir Zaman Shah, Gang Xu and Guoqing Yang
Agronomy 2022, 12(12), 3098; https://doi.org/10.3390/agronomy12123098 - 7 Dec 2022
Cited by 6 | Viewed by 1442
Abstract
The brown planthopper (BPH), Nilaparvata lugens (Stål) (Hemiptera: Delphacidae), is a notorious pest in rice production. The microbial secondary metabolite, decoyinine (DCY), is produced by Streptomyces hygroscopicus. Recent studies found that seed priming with DCY could enhance rice resistance to BPH and [...] Read more.
The brown planthopper (BPH), Nilaparvata lugens (Stål) (Hemiptera: Delphacidae), is a notorious pest in rice production. The microbial secondary metabolite, decoyinine (DCY), is produced by Streptomyces hygroscopicus. Recent studies found that seed priming with DCY could enhance rice resistance to BPH and Laodelphax striatellus; however, the mechanism of enhancing insect resistance in rice remains unclear. Here, an integrated physio-biochemical and transcriptome analysis was performed on rice priming with DCY after BPH infestation. Defense-related enzymes activities such as catalase (CAT), superoxide dismutase (SOD), peroxidase (POD), glutathione S transferase (GST), and polyphenol oxidase (PPO), concentrations of hydrogen peroxide (H2O2), callose, and free amino acids in rice priming with DCY were significantly increased than in control plants after BPH infestation. Concentrations of soluble sugars, sucrose, and glucose were higher in rice treated with DCY than in the control after BPH infestation; however, the concentration of malondialdehyde (MDA) was significantly decreased in rice treated with DCY after BPH infestation. In the transcriptome analysis, GO functional annotation and KEGG pathway analysis were enriched in defense response, transcription factors, secondary metabolites, reactive oxygen species, and cell wall organization and these data also support physio-biochemical results. The qRT-PCR results further verified the differential expressed genes related to DCY-treated rice responding to BPH. Meanwhile, it indicated that DCY might enhance the resistance of rice to BPH by regulating the rice WRKY transcription factor genes. Our results provide a basis for further exploring the molecular mechanism of the defense response of rice priming with DCY against BPH infestation and could provide valuable resources to control insect pests. Full article
(This article belongs to the Special Issue Ecological Mechanism and Control Technology of Rice Pests)
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