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Choi DY, Mo HH, Park Y. Different development and fecundity between Spodoptera frugiperda USA and China populations, influenced by ecdysone-related genes. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2024; 115:e22074. [PMID: 38288488 DOI: 10.1002/arch.22074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/05/2023] [Accepted: 12/10/2023] [Indexed: 02/01/2024]
Abstract
The fall armyworm (FAW), Spodoptera frugiperda, is one of the most harmful plant pests in the world and is globally distributed from the American continent to the Asian region. The FAW USA population (Sf-USA) and China population (Sf-CHN), which belong to corn strain, showed different developmental periods and fecundity rates in lab conditions. Sf-USA had faster development and higher fecundity compared with Sf-CHN. To examine these differences, transcriptomic data from two FAW populations were analyzed and compared. Twelve gigabytes of transcripts were read from each sample and 21,258 differentially expressed genes (DEGs) were detected. DEGs with log2 fold change ≥ 2 were identified and compared in two populations. In comparison to the Sf-CHN, we discovered that 3471 and 3851 individual DEGs upregulated and downregulated, respectively. Comparing transcriptome profiles for differential gene expression revealed several DEGs, including 39 of ecdysone (E)-, 25 of juvenile hormone-, and 15 of insulin-related genes. We selected six of E-related genes, such as Neverland, Shade, Ecdysone receptor, Ecdysone-inducible protein 74 (E74), E75, and E78 from DEGs. Gene expressions were suppressed by RNA interference to confirm the physiological functions of the selected genes from Sf-USA. The Sf-USA showed developmental retardation and a decrease in fecundity rate by suppression of E-related genes. These findings show that biological characteristics between Sf-USA and Sf-CHN are influenced by E-related genes.
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Affiliation(s)
- Du-Yeol Choi
- Plant Quarantine Technology Center, Animal and Plant Quarantine Agency, Gimcheon, Korea
| | - Hyoung-Ho Mo
- Plant Quarantine Technology Center, Animal and Plant Quarantine Agency, Gimcheon, Korea
| | - Youngjin Park
- Department of Plant Medicals, Andong National University, Andong, Korea
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Evangelou V, Lytra I, Krokida A, Antonatos S, Georgopoulou I, Milonas P, Papachristos DP. Insights into the Diversity and Population Structure of Predominant Typhlocybinae Species Existing in Vineyards in Greece. INSECTS 2023; 14:894. [PMID: 37999093 PMCID: PMC10672024 DOI: 10.3390/insects14110894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/13/2023] [Accepted: 11/16/2023] [Indexed: 11/25/2023]
Abstract
Insects of the subfamily Typhlocybinae (Hemiptera: Cicadellidae) are pests of economically important agricultural and horticultural crops. They damage the plants directly or indirectly by transmitting plant pathogens, resulting in significant yield loss. Several leafhoppers of this subfamily use vines as hosts. Accurate and rapid identification is the key to their successful management. The aim of this study is to determine the Typhlocybinae species that exist in vineyards all over Greece and investigate the relationship between them. For this purpose, yellow sticky traps were placed, morphological and molecular data were collected, and phylogenetic models were analyzed. The mitochondrial marker Cytochrome Oxidase Subunit I (mtCOI) was applied for the DNA and phylogenetic analysis. The combination of morphological and molecular data resulted in identifying the existence of six different species all over Greece: Arboridia adanae, Asymmetrasca decedens, Hebata decipiens, Hebata vitis, Jacobiasca lybica and Zygina rhamni. Forty-eight different haplotypes were found to exist in the different regions of the country.
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Affiliation(s)
- Vasiliki Evangelou
- Scientific Directorate of Entomology and Agricultural Zoology, Benaki Phytopathological Institute, 8 Stefanou Delta Str., Kifissia, 14561 Athens, Greece; (I.L.); (A.K.); (S.A.); (I.G.); (P.M.); (D.P.P.)
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Sun W, Hu G, Su Q, Wang Y, Yang W, Zhou J, Gao Y. Population Source of Third-Generation Oriental Armyworm in Jilin, China, Determined by Entomology Radar, Trajectory Analysis, and Mitochondrial COI Sequences. ENVIRONMENTAL ENTOMOLOGY 2022; 51:621-632. [PMID: 35390144 PMCID: PMC9205478 DOI: 10.1093/ee/nvac020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Indexed: 06/14/2023]
Abstract
The armyworm, Mythimna separata (Walker) (Lepidoptera: Noctuidae), is an important polyphagous pest with a strong migratory ability. Recently, third-generation larvae have become an increasingly serious pest threat in Jilin Province of northeast China. To investigate the population source of this species, scanning entomological radar observations and insect mitochondrial cytochrome oxidase I (COI) genes were used in this study. Five main results were found: (1) The peak period in captured second-generation moths was from mid to late July. The temperature and wind speeds were optimum for the moths to have migrated. Strong southwesterly winds occurred during the peak migration period. (2) Radar observations indicated that most of the moths' migration took place at a height of 600 m, often in a dense layer which formed at heights of 350-800 m. (3) Analyses of adult ovarian development and larval haplotypes showed third-generation larvae were progeny of both locally produced progeny and immigrant moths. (4) Based on our back-tracking and haplotype analyses, immigration led to an outbreak originated in the same source area to the southwest. (5) Emigration of second-generation moths was confirmed by both radar observation and mtDNA analysis. Forward trajectories indicated that the moths were capable of immigrating far from their overwintering range. These results are useful for improving the forecasting systems of this insect pest species.
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Affiliation(s)
| | | | - Qianfu Su
- Key Laboratory of Integrated Pest Management on Crops in Northeast, Ministry of Agriculture, Institute of Plant Protection, Jilin Academy of Agricultural Sciences, Gongzhuling 136100, China
| | - Yangzhou Wang
- Key Laboratory of Integrated Pest Management on Crops in Northeast, Ministry of Agriculture, Institute of Plant Protection, Jilin Academy of Agricultural Sciences, Gongzhuling 136100, China
| | - Wei Yang
- Key Laboratory of Integrated Pest Management on Crops in Northeast, Ministry of Agriculture, Institute of Plant Protection, Jilin Academy of Agricultural Sciences, Gongzhuling 136100, China
| | - Jiachun Zhou
- Key Laboratory of Integrated Pest Management on Crops in Northeast, Ministry of Agriculture, Institute of Plant Protection, Jilin Academy of Agricultural Sciences, Gongzhuling 136100, China
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de Souza TE, Cruz GADS, de Moura RDC. Impact of Limited Dispersion Capacity and Natural Barriers on the Population Structure of the Grasshopper Ommexecha virens (Orthoptera: Ommexechidae). NEOTROPICAL ENTOMOLOGY 2021; 50:706-715. [PMID: 33978918 DOI: 10.1007/s13744-021-00878-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
The grasshopper Ommexecha virens Serville has low dispersion capacity, and it is regarded as a specialist, only being found in sandy, dry environments with high incidence of sunlight. Considering these aspects, we evaluated the diversity and genetic structure of O. virens natural populations using ISSR (Inter Simple Sequence Repeat) markers. The data pointed to low expected heterozygosity for some populations (HE = 0.06-0.09), probably a consequence of positive inbreeding, which is typical of species showing low or null dispersion indices. Moreover, significant genetic differentiation was observed (FST = 0.50 and GST = 0.51), as well as low number of migrants (Nm = 0.47), indicating that the populations are genetically differentiated. This is likely related to the limitation in dispersing and fragmentation of suitable environment localities colonized by O. virens. The populations of O. virens were structured in three genetic groups associated to different landscapes, revealing the presence of a secondary contact zone, possibly arisen from isolation followed by genetic divergence among populations and subsequent gene flow of divergent individuals of O. virens. At last, we found positive isolation by distance (IBD; r: 0.427; P: 0.025) which is an important factor, since it may be adding to the emergence of reproductive barriers among individuals of O. virens that have been experiencing isolation.
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Affiliation(s)
- Tyago Eufrásio de Souza
- Laboratório de Biodiversidade e Genética de Insetos, Universidade de Pernambuco (UPE), Recife, Pernambuco, Brazil
| | - Geyner Alves Dos Santos Cruz
- Laboratório de Biodiversidade e Genética de Insetos, Universidade de Pernambuco (UPE), Recife, Pernambuco, Brazil.
- Laboratório de Biodiversidade e Genética Evolutiva, Universidade de Pernambuco (UPE), Petrolina, Pernambuco, Brazil.
| | - Rita de Cássia de Moura
- Laboratório de Biodiversidade e Genética de Insetos, Universidade de Pernambuco (UPE), Recife, Pernambuco, Brazil.
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Genetic diversity and genetic differentiation of Megalobrama populations inferred by mitochondrial markers. Genes Genomics 2021; 43:1119-1132. [PMID: 34342875 DOI: 10.1007/s13258-021-01126-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 06/16/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Megalobrama is economically one of the most important freshwater fish genera in China. However, phylogenetic relationships among M. amblycephala, M. skolkovii, M. hoffmanni and M. pellegrini remain unresolved. OBJECTIVE To explore the genetic diversity and phylogenetic relationship of Megalobrama populations belonging to all four species. METHODS The concatenated sequences of mitochondrial cytochrome b (Cytb) and control region (CR) were used to analyze the genetic variation, genetic differentiation and population expansion of 15 Megalobrama populations. RESULTS The study showed that haplotype diversity and nucleotide diversity of M. hoffmanni and M. skolkovii were high, and that M. hoffmanni was the most genetically divergent of the four species. Haplotype network analysis revealed that M. hoffmanni and M. amblycephala formed a monophyletic group each, while M. skolkovii and M. pellegrini clustered together. There was a high genetic differentiation among the four Megalobrama species, and genetic distance among populations was not affected by geographical distance. Additionally, the results indicated that there was gene flow between the Liangzi Lake (LZL) population and Jinsha River Reservoir (JS) population. Also, Zhaoqing (ZQ) population of M. hoffmanni might have experienced a population expansion. CONCLUSION Our study verifies genetic diversity and differentiation of Megalobrama populations, and these findings will represent a significant contribution to the conservation and utilization of germplasm resources of Megalobrama.
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Hu S, Sun S, Fu D, Lü J, Wang X, Yu Y, Dong L, Chen S, Ye H. Migration sources and pathways of the pest species Sogatella furcifera in Yunnan, China, and across the border inferred from DNA and wind analyses. Ecol Evol 2020; 10:8235-8250. [PMID: 32788975 PMCID: PMC7417236 DOI: 10.1002/ece3.6531] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 05/20/2020] [Accepted: 06/03/2020] [Indexed: 01/31/2023] Open
Abstract
The migration sources and pathways of Sogatella furcifera (Horváth) in topologically complex regions like Yunnan, China, and adjacent montane areas have long been a challenging task and a bottleneck in effective pest forecast and control. The present research reinvestigated this issue using a combination of mtDNA and long-term historical wind field data in an attempt to provide new insights. Genetic analyses showed that the 60 populations of S. furcufera collected across Myanmar, Thailand, Laos, Vietnam, Yunnan, Guizhou, and Sichuan lack genetic structure and geographic isolation, while spatial analysis of haplotype and diversity indices discovered geographic relevance between populations. Migration rate analysis combined with high-resolution 10-year wind field analysis detected the following migration sources, pathways, and impacted areas which could explain the outbreak pattern in Yunnan. (a) Dominating stepwise northward migrations originated from northern Indochina, southern Yunnan, and central-eastern Yunnan, impacting their northern areas. (b) Concurring summer-autumn southward (return) migration originated from nearly all latitude belts of Sichuan and Yunnan mainly impacting central and southern Yunnan. (c) Regular eastward and summer-autumn westward migrations across Yunnan. The northward migration reflects the temporal rhythm of gradual outbreaks from the south to the north in a year, while the return migration may explain the repeated or very severe outbreaks in the impacted areas. To form a better pest forecast and control network, attention must also be paid to the northern part of Yunnan to suppress the impact of return migration in summers and autumns.
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Affiliation(s)
- Shao‐Ji Hu
- Yunnan Key Laboratory of International Rivers and Transboundary Eco‐securityYunnan UniversityKunmingChina
- Institute of International Rivers and Eco‐securityYunnan UniversityKunmingChina
| | - Shan‐Shan Sun
- Department of Atmospheric SciencesSchool of Resource Environment and Earth ScienceYunnan UniversityKunmingChina
| | - Da‐Ying Fu
- School of Life SciencesSouthwest Forest UniversityKunmingChina
| | - Jian‐Ping Lü
- Plant Protection and Quarantine Station of Yunnan ProvinceKunmingChina
| | - Xue‐Ying Wang
- School of Life SciencesYunnan UniversityKunmingChina
| | - Yan‐Ping Yu
- School of Life SciencesYunnan UniversityKunmingChina
| | - Li‐Min Dong
- School of Life SciencesYunnan UniversityKunmingChina
| | - Sui‐Yun Chen
- Biocontrol Engineering Research Centre of Crop Disease and PestYunnan UniversityKunmingChina
- Biocontrol Engineering Research Centre of Plant Disease and PestYunnan UniversityKunmingChina
| | - Hui Ye
- School of AgricultureYunnan UniversityKunmingChina
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Zhou A, Tian P, Li Z, Li X, Tan X, Zhang Z, Qiu L, He H, Ding W, Li Y. Genetic diversity and differentiation of populations of Chlorops oryzae (Diptera, Chloropidae). BMC Ecol 2020; 20:22. [PMID: 32295587 PMCID: PMC7160969 DOI: 10.1186/s12898-020-00293-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 04/11/2020] [Indexed: 11/13/2022] Open
Abstract
Background Chlorops oryzae is an important pest of rice crops. There have been frequent outbreaks of this pest in recent years and it has become the main rice pest in some regions. To elucidate the molecular mechanism of frequent C. oryzae outbreaks, we estimated the genetic diversity and genetic differentiation of 20 geographical populations based on a dataset of ISSR markers and COI sequences. Results ISSR data revealed a high level of genetic diversity among the 20 populations as measured by Shannon’s information index (I), Nei’s gene diversity (H), and the percentage of polymorphic bands (PPB). The mean coefficient of gene differentiation (Gst) was 0.0997, which indicates that only 9.97% genetic variation is between populations. The estimated gene flow (Nm) value was 4.5165, indicating a high level of gene flow and low, or medium, genetic differentiation among some populations. The results of a Mantel test revealed no significant correlation between genetic and geographic distance among populations, which means there is no evidence of significant genetic isolation by distance. An UPGMA (unweighted pair-group method with arithmetic averages) dendrogram based on genetic identity, did not indicate any major geographic structure for the 20 populations examined. mtDNA COI data indicates low nucleotide (0.0007) and haplotype diversity (0.36) in all populations. Fst values suggest that the 20 populations have low, or medium, levels of genetic differentiation. And the topology of a Neighbor-Joining tree suggests that there are no independent groups among the populations examined. Conclusions Our results suggest that C. oryzae populations have high genetic diversity at the species level. There is evidence of frequent gene flow and low, or medium, levels of genetic differentiation among some populations. There is no significant correlation between genetic and geographic distance among C. oryzae populations, and therefore no significant isolation by distance. All results are consistent with frequent gene exchange between populations, which could increase the genetic diversity, and hence, adaptability of C. oryzae, thereby promoting frequent outbreaks of this pest. Such knowledge may provide a scientific basis for predicting future outbreaks.
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Affiliation(s)
- Ailin Zhou
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha, 410128, China
| | - Ping Tian
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha, 410128, China
| | - Zhongcai Li
- Plant Protection and Inspection Station, Agriculture Bureau of Hanshou County, Hanshou, 415900, China
| | - Xinwen Li
- Agriculture and Rural Department of Hunan Province, Plant Protection and Inspection Station, Changsha, 410005, China
| | - Xiaoping Tan
- Agriculture and Rural Department of Hunan Province, Plant Protection and Inspection Station, Changsha, 410005, China
| | - Zhengbing Zhang
- Agriculture and Rural Department of Hunan Province, Plant Protection and Inspection Station, Changsha, 410005, China
| | - Lin Qiu
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha, 410128, China
| | - Hualiang He
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha, 410128, China
| | - Wenbing Ding
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha, 410128, China.,Hunan Provincial Engineering & Technology Research Center for Biopesticide and Formulation Processing, Changsha, 410128, China
| | - Youzhi Li
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha, 410128, China. .,Hunan Provincial Engineering & Technology Research Center for Biopesticide and Formulation Processing, Changsha, 410128, China.
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Karthika P, Vadivalagan C, Thirumurugan D, Murugan K. Intra-species variation and geographic differentiation among the populations of the quarantine agricultural pest leucinoides orbonalis (lepidoptera: Crambidae) in the global assemblage - a prospective of DNA barcoding. Mitochondrial DNA A DNA Mapp Seq Anal 2019; 30:682-693. [PMID: 31181977 DOI: 10.1080/24701394.2019.1622691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Leucinodes orbonalis Guenée is serious quarantine pest occurring globally, studies are needed to enlighten the genetic complexities associated with the species. India is considered to be the origin of the L. orbonalis, therefore availability of species records from this region enable to analyse the genetic differences and dispersal of the lineages. The results of the study reported 47 haplotypes in four clusters pertaining to their ancestral lineage. The transition/transversion bias (R) was observed to be higher with 1.238 and 1.312 in the first and third codon positions respectively. The overall intraspecies divergence was found to be 0.302. AMOVA revealed that the total variations were then as reported 67.15 among the south-east countries but our studies reported the total variation to be 77.25% (Germany, India, South east and Australia). FST and Mantel's test indicated that there was no correlation between the genetic variation and geographical distance. The overall haplotype diversity was 0.852, where the nucleotide diversity of H31 (0.00593) was highest and H1 (0.00087) was lowest. The genetic diversity indices Tajima D and Fu's Fs static for H1, H13 and H31 had negative values which possibly inferred for the bottle neck effect. The ML tree was constituted the branch length of 5.0157 with one out-group. The tree was formed with ten distinctive clades with the haplotypes congregated together based on similar genetic composition.
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Affiliation(s)
- Pushparaj Karthika
- a Department of Zoology, School of Biosciences , Avinashilingam Institute for Home Science and Higher Education for Women , Coimbatore , India
| | - Chithravel Vadivalagan
- b Entomology Laboratory, Department of Zoology , Bharathiar University , Coimbatore , India
| | - Durairaj Thirumurugan
- c Department of Biotechnology , SRM Institute of Science and Technology , Kattankulathur , India
| | - Kadarkarai Murugan
- b Entomology Laboratory, Department of Zoology , Bharathiar University , Coimbatore , India
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