Identification and Genetic Differentiation of Sitobion avenae (Hemiptera: Aphididae) Biotypes in China

Wang, Da; Zhai, Yingting; Liu, Deguang; Zhang, Na; Li, Chunbo; Shi, Xiaoqin

doi:10.1093/jee/toz244

Cited by 8 publications

(16 citation statements)

References 52 publications

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“…We did identify selective effects of different host plants on life-history trait plasticity of S. avenae in previous studies [74]. Therefore, gene expression plasticity in S. avenae might be the primary driving force underlying the changing vital life-history traits (e.g., fecundity) of both biotypes on alternative plants [48]. Ultimately, this could have significant impacts on the adaptive potential and differentiation of S. avenae biotypes on different plants.…”

Section: Discussionmentioning

confidence: 93%

“…Among all the S. avenae biotypes, biotype 3 was found to have relatively higher fitness parameters on resistant barley varieties (e.g., cv. Xiyin No.2) than on wheat varieties (e.g., Aikang 58) [48]. The opposite was true for biotype 1, indicating clearly that adaptive differentiation had occurred between the two biotypes.…”

Section: Discussionmentioning

confidence: 94%

“…Some studies have found certain degrees of plant specialization in S. avenae [23,[45][46][47]. In our previous study, based on their unique virulence profiles on different resistant cultivars of wheat and barley, multiple biotypes of S. avenae were identified [48]. However, only little to moderate genetic differentiation was detected among S. avenae biotypes, which could not explain the divergence of biotypes in this aphid [48].…”

Section: Introductionmentioning

confidence: 82%

“…The English grain aphid (Sitobion avenae) provides a good model to address these issues. This aphid can survive on many cereals and wild grasses in the Poaceae, and has been found to be able to evolve multiple biotypes on both barley and wheat [48]. Among all the S. avenae biotypes, biotype 3 was found to have relatively higher fitness parameters on resistant barley varieties (e.g., cv.…”

Section: Discussionmentioning

confidence: 99%

“…In our previous study, based on their unique virulence profiles on different resistant cultivars of wheat and barley, multiple biotypes of S. avenae were identified [48]. However, only little to moderate genetic differentiation was detected among S. avenae biotypes, which could not explain the divergence of biotypes in this aphid [48]. In this study, we have examined gene expression of two biotypes (i.e., biotypes 1 and 3) on both original and alternative hosts by deeply sequencing the entire transcriptome.…”

Section: Introductionmentioning

confidence: 99%

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Transcriptome profiling revealed potentially important roles of defensive gene expression in the divergence of insect biotypes: a case study with the cereal aphid Sitobion avenae

et al. 2020

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Background Many insects can develop differential biotypes on variable host plants, but the underlying molecular factors and mechanisms are not well understood. To address this issue, transcriptome profiling analyses were conducted for two biotypes of the cereal aphid, Sitobion avenae (Fabricius), on both original and alternative plants. Results Comparisons between both biotypes generated 4174 differentially expressed unigenes (DEGs). In their response to host plant shift, 39 DEGs were shared by both biotypes, whereas 126 and 861 DEGs occurred only in biotypes 1 and 3, respectively. MMC (modulated modularity clustering) analyses showed that specific DEGs of biotypes 1 and 3 clustered into five and nine transcriptional modules, respectively. Among these DEGs, defense-related genes underwent intensive expression restructuring in both biotypes. However, biotype 3 was found to have relatively lower gene transcriptional plasticity than biotype 1. Gene enrichment analyses of the abovementioned modules showed functional divergence in defensive DEGs for the two biotypes in response to host transfer. The expression plasticity for some defense related genes was showed to be directly related to fecundity of S. avenae biotypes on both original and alternative plants, suggesting that expression plasticity of key defensive genes could have significant impacts on the adaptive potential and differentiation of S. avenae biotypes on different plants. Conclusions The divergence patterns of transcriptional plasticity in defense related genes may play important roles in the phenotypic evolution and differentiation of S. avenae biotypes. Our results can provide insights into the role of gene expression plasticity in the divergence of insect biotypes and adaptive evolution of insect populations.

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Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Transcriptome profiling revealed potentially important roles of defensive gene expression in the divergence of insect biotypes: a case study with the cereal aphid Sitobion avenae

et al. 2020

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Climate change, host plant availability, and irrigation shape future region‐specific distributions of the Sitobion grain aphid complex

Wang

Hof

Matson

et al. 2023

Pest Management Science

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BACKGROUND Understanding where species occur using species distribution models has become fundamental to ecology. Although much attention has been paid to invasive species, questions about climate change related range shifts of widespread insect pests remain unanswered. Here, we incorporated bioclimatic factors and host plant availability into CLIMEX models to predict distributions under future climate scenarios of major cereal pests of the Sitobion grain aphid complex (Sitobion avenae, S. miscanthi, and S. akebiae). Additionally, we incorporated the application of irrigation in our models to explore the relevance of a frequently used management practice that may interact with effects of climate change of the pest distributions. RESULTS Our models predicted that the area potentially at high risk of outbreaks of the Sitobion grain aphid complex would increase from 41.3% to 53.3% of the global land mass. This expansion was underlined by regional shifts in both directions: expansion of risk areas in North America, Europe, most of Asia, and Oceania, and contraction of risk areas in South America, Africa, and Australia. In addition, we found that host plant availability limited the potential distribution of pests, while the application of irrigation expanded it. CONCLUSION Our study provides insights into potential risk areas of insect pests and how climate, host plant availability, and irrigation affect the occurrence of the Sitobion grain aphid complex. Our results thereby support agricultural policy makers, farmers, and other stakeholders in their development and application of management practices aimed at maximizing crop yields and minimizing economic losses. © 2023 Society of Chemical Industry.

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Functional divergence of three glutathione transferases in two biotypes of the English grain aphid, Sitobion avenae

Zhang

Liu

Zhai

et al. 2021

Entomologia Exp Applicata

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The English grain aphid, Sitobion avenae (Fabricius) (Hemiptera: Aphididae), is a significant pest of cereal crops, but molecular factors and mechanisms that underpin its ability to develop differential biotypes on variable host plants are still not well understood. In this study, we investigated the interactions between two plant secondary metabolites (i.e., gramine and gallic acid) and three glutathione S-transferases (GSTs) of S. avenae. Using artificial diets complemented or not with one of these two plant compounds, we found that gramine had relatively stronger negative effects on fitness of S. avenae biotype 3 (adapted to barley), and gallic acid on that of biotype 4 (adapted to wheat). Gramine significantly induced overexpression of SaveGST1 and SaveGST2 in biotype 4, but not in biotype 3. Gramine also reduced SaveGST3 expression in biotype 4, but not in biotype 3, suggesting biotypespecific effect of GSTs' regulation. In the treatments with gallic acid, the overexpression of SaveGST1, but not SaveGST2 or SaveGST3, was significantly induced in both biotypes, suggesting a critical role of SaveGST1 in detoxification of phenolic compounds such as gallic acid. The total constitutive GST activity was much higher in biotype 4 than in biotype 3. Significant increase in GST activity was obtained by the addition of both secondary metabolites in biotype 4, but not in biotype 3, showing significantly higher expression plasticity of GSTs in biotype 4. Thus, both constitutive and induced expression of GSTs could affect the adaptability of S. avenae on plants with variable secondary compounds, and thus contribute to the divergence of biotypes in this aphid species.

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Identification and Genetic Differentiation of Sitobion avenae (Hemiptera: Aphididae) Biotypes in China

Cited by 8 publications

References 52 publications

Transcriptome profiling revealed potentially important roles of defensive gene expression in the divergence of insect biotypes: a case study with the cereal aphid Sitobion avenae

Transcriptome profiling revealed potentially important roles of defensive gene expression in the divergence of insect biotypes: a case study with the cereal aphid Sitobion avenae

Climate change, host plant availability, and irrigation shape future region‐specific distributions of the Sitobion grain aphid complex

Functional divergence of three glutathione transferases in two biotypes of the English grain aphid, Sitobion avenae

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