Genetic Variation May Have Promoted the Successful Colonization of the Invasive Gall Midge, Obolodiplosis robiniae, in China

Yao, Yingkang; Shang, X.; Yang, Jun; Lin, Ruozhu; Huai, Wenxia; Zhao, Wenxia

doi:10.3389/fgene.2020.00387

Cited by 10 publications

(14 citation statements)

References 56 publications

(65 reference statements)

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“…The high level of genetic differentiation among all populations of A. mali indicated that the geographic isolation of insects is one of the important factors for genetic differentiation in different populations ( Forbes et al, 2017 ; Goodman et al, 2019 ), which was supported by the positive correlation between genetic distance and geographic distance ( Figure 2 ), while the geographic isolation was hard to be observed for the recent invasive pests ( Yao et al, 2020 ). Moreover, the major proportion of molecular genetic variation existed among populations ( Table 5 ).…”

Section: Discussionmentioning

confidence: 86%

“…Thus, the use of available markers is crucial ( Cavalli-Sforza, 1998 ). With the development of molecular biology techniques, an increasing number of molecular markers have been used in the study of population genetics, such as mitochondrial DNA, ribosomal DNA, and microsatellite sequences ( Bray et al, 2011 ; Lopez et al, 2014 ; Zhang et al, 2015 ; Yao et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

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Population Genetics Reveals That the Western Tianshan Mountains Populations of Agrilus mali (Coleoptera: Buprestidae) May Have Not been Recently Introduced

et al. 2022

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Agrilus mali Matsumura is a wood-boring beetle that aggressively attacks species of the genus Malus, that has recently caused serious damage to the wild apple tree M. sieversii (Lebed.) in the western Tianshan Mountains in Xinjiang. It was first detected there in the early 1990s and spread rapidly, being thus considered a regional invasive pest. To explore the possible outbreak mechanism of the local population and characterize the genetic differentiation of A. mali across different regions of China, we used three mitochondrial genes (COI, COII, and CytB) to investigate the genetic diversity and genetic structure of 17 A. mali populations containing 205 individuals collected from five Chinese provinces. Among them, nine populations were from the western Tianshan Mountains. Ultimately, of the 136 pairwise Fst comparisons, 99 showed high genetic differentiation among overall populations, and Tianshan populations exhibited significant differentiation with most of the non-Tianshan populations. Furthermore, A. mali populations represented relatively abundant haplotypes (54 haplotypes). Nine populations from the Tianshan Mountains showed 32 haplotypes (26 of which were unique), displaying relatively high genetic diversity. Additionally, the Mantel test revealed population genetic differentiation among either overall populations or the Tianshan Mountains populations, likely caused by geographical isolation. Phylogenic relationships showed that all populations clustered into three clades, and Tianshan Mountains populations, including CY, occupied one of the three clades. These results suggest that A. mali in the western Tianshan region has possibly been present in the area for a long period, and may not have been introduced recently. Highly frequent gene flows within Tianshan populations are possibly caused by human activities and may enhance the adaptability of A. mali along the western Tianshan Mountains, leading to periodic outbreaks. These findings enhance our understanding of jewel beetle population genetics and provide valuable information for pest management.

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Section: Discussionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Population Genetics Reveals That the Western Tianshan Mountains Populations of Agrilus mali (Coleoptera: Buprestidae) May Have Not been Recently Introduced

et al. 2022

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“…The gel image bands were analyzed by Image lab 4.0 software, and the data module of was used to determine uniform genotyping results. POPGENE version 1.32 was used to calculate the number of observed alleles ( N A ), the number of effective alleles ( N E ), observed heterozygosity ( H O ), expected heterozygosity ( H E ), percentage of polymorphic loci (PPL), Shannon’s information index ( I ), Nei’s gene diversity index (H), inbreeding coefficient (Fis), fixation index (Fit), genetic differentiation coefficient (Fst), gene flow (Nm), genetic distance and genetic similarity coefficient [ 32 – 34 ]. The Cervus version 3.0.7 was used to calculate polymorphic information content ( PIC ) [ 35 ].…”

Section: Methodsmentioning

confidence: 99%

Genetic diversity of Prunus armeniaca L. var. ansu Maxim. germplasm revealed by simple sequence repeat (SSR) markers

Chen

Liu²,

Lu³

et al. 2022

PLoS ONE

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The genetic diversity and genetic structure of P. armeniaca var. ansu were analyzed based on SSR markers. The aim was to provide scientific basis for conservation, efficient utilization, molecular marker assisted breeding and improved variety selection of P. armeniaca var. ansu germplasm resources. The results showed that the level of genetic diversity within the population was high. Among the 30 SSR markers, the mean number of observed alleles was 11.433, the mean number of effective alleles was 4.433, the mean of Shannon information index was 1.670, and the mean of polymorphic information content was 0.670. Among the eight provenances, Tuanjie Township, Xinyuan County, Xinjiang had the highest genetic diversity. The observed alleles, effective alleles, Shannon information index and Nei’s gene diversity index among provenances were higher than those within provenances. Based on Bayesian mathematical modeling and UPGMA cluster analysis, 86 P. armeniaca var. ansu accessions were divided into three subpopulations and four groups, which reflected individual differences in provenances. Subpopulations classified by Bayesian mathematical modeling and groups classified by UPGMA cluster analysis were significantly correlated with geographical provenance (Sig<0.01) and the provenances significantly impacted classification of groups. The provenances played an important role in classification of groups. The genetic distance between Tuanjie Township of Xinyuan County and Alemale Township of Xinyuan County was the smallest, while the genetic relationship between them was the closest and the degree of genetic differentiation was small.

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“…An interesting example of these insects is the gall midge Obolodiplosis robiniae (Haldeman, 1847) (Diptera: Cecidomyiidae). It was recorded beyond its native area in 2002 in Japan and South Korea [ 28 , 29 ], in the following year in Italy [ 30 ] and it spread very rapidly through Asia and Europe [ 31 – 33 ]. The larva of O. robiniae is monophagous on the genus Robinia (primarily R. pseudoacacia ) developing in the longitudinal rolling gall, along the edge (margin) of the leaflets.…”

Section: Introductionmentioning

confidence: 99%

A broad spectrum of host plant responses to the actions of the gall midge: case study of Robinia pseudoacacia L. and Obolodiplosis robiniae (Haldeman)

Ratajczak

Leśniewska

Piotrowska‐Niczyporuk

et al. 2023

BMC Plant Biol

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This study aims to provide insights into plant-insect interaction during the formation and development of open gall structure on the leaves of Robinia pseudoacacia during gall formation by Obolodiplosis robiniae. This was the first time such far-reaching studies were performed at a biochemical and anatomical level. The gall wall is created from a few thick cells covered with epidermis. This parenchymatous nutritive tissue is rich in starch. Sclerenchyma only occurs around the vascular bundles as a result of the lignification of the parenchyma of the bundle sheaths. The level of reactive oxygen species (ROS) in the new structure was reduced and catalase activity was inhibited, which suggests another pathway of ROS decomposition – e.g. by ascorbate or glutathione peroxidase. The gall structure was combined with an increasing level of protein and non-protein thiols. Phenols seems to be a good protective factor; whose level was lower in infected leaflets. Levels of MUFA (monosaturated fatty acids) and SFA (saturated fatty acids) rose, probably as source of food for insects. The amount of fatty acid is positively correlated with the plant response. We detected that non infected leaflets produced C6:0 (hexanoic acid) and C8:0 (octanoic acid) fatty acids connected with odor. Changes in gall color as they develop are connected with photosynthetic pigments degradation (mainly chlorophylls) where the pathway of astaxanthin transformation to fatty acid is considered to be the most important process during gall maturation. Nutritive tissue is composed mainly of octadecanoic acid (C18:0) – a main source of food for O. robiniae.

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Genetic Variation May Have Promoted the Successful Colonization of the Invasive Gall Midge, Obolodiplosis robiniae, in China

Cited by 10 publications

References 56 publications

Population Genetics Reveals That the Western Tianshan Mountains Populations of Agrilus mali (Coleoptera: Buprestidae) May Have Not been Recently Introduced

Population Genetics Reveals That the Western Tianshan Mountains Populations of Agrilus mali (Coleoptera: Buprestidae) May Have Not been Recently Introduced

Genetic diversity of Prunus armeniaca L. var. ansu Maxim. germplasm revealed by simple sequence repeat (SSR) markers

A broad spectrum of host plant responses to the actions of the gall midge: case study of Robinia pseudoacacia L. and Obolodiplosis robiniae (Haldeman)

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