Genetic Basis and Selection for Life-History Trait Plasticity on Alternative Host Plants for the Cereal Aphid Sitobion avenae

Dai, Xinjia; Gao, Suxia; Liu, Deguang

doi:10.1371/journal.pone.0106179

Cited by 19 publications

(42 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We also found that phenotypic plasticity of vital life-history traits (e.g., developmental time and fecundity) for S . avenae had a clear genetic basis in our previous study [24]. Even though genetic models (i.e., pleiotropy, epistasis, and overdominance) have been used to explain phenotypic plasticity, the genetic mechanisms of plastic responses are poorly understood [52–53].…”

Section: Discussionmentioning

confidence: 99%

Probing behaviors and their plasticity for the aphid Sitobion avenae on three alternative host plants

et al. 2018

Self Cite

View full text Add to dashboard Cite

Insects may develop different behavioral phenotypes in response to heterogeneous environments (e.g., host plants), but the plasticity of their feeding behaviors has been rarely explored. In order to address the issue, clones of the English grain aphid, Sitobion avenae (Fabricius), were collected from wheat, and their probing behaviors were recorded on three plants. Our results demonstrated that S. avenae individuals on the alternative plants (i.e., barley and oat) tended to have higher frequency of non-probing (Np), increased duration of the pathway phase, increased phloem salivation, and decreased phloem ingestion (E2), compared to those on the source plant (i.e., wheat), showing the resistance of barley and oat to this aphid’s feeding. This aphid showed apparently high extents of plasticity for all test probing behaviors on barley or oat. Positive selection for higher extents of plasticity in E2 duration was identified on barley and oat. The factor ‘clone’ alone explained 30.6% to 70.1% of the total variance for each behavioral plasticity, suggesting that the divergence of probing behavior plasticity in S. avenae had a genetic basis. This aphid’s fitness correlated positively with the plasticity of Np frequency and E2 frequency. Some behaviors and their corresponding plasticities (e.g., the frequency of xylem ingestion and its plasticity) were found to be correlated characters, probably reflecting the limits for the evolution of higher extents of behavioral plasticity in this aphid. The differential probing behaviors and their plasticity in S. avenae can have significant implications for the adaptation and management of aphids on different plants.

show abstract

Section: Discussionmentioning

confidence: 99%

Probing behaviors and their plasticity for the aphid Sitobion avenae on three alternative host plants

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…As detailed previously in Dai et al (), the amount of plasticity for life‐history characters of different clonal lines on the three test host plants (i.e., wheat, oat, and rye) was calculated as the coefficient of variation using the equation

C V = S D / \bar{x} \times 100

CV = SD/\bar{x} \times 100CV = SD/\bar{x} \times 100 ( SD , the standard deviation of each treatment;

\overset{x}{true}

\bar{x}\bar{x}, the mean of each treatment).…”

Section: Methodsmentioning

confidence: 99%

“…The colonies were kept on wheat (T. aestivum cv. "Aikang 58") seedlings in the laboratory as described previously (Dai, Gao, & Liu, 2014). Four microsatellite loci (i.e., Sm10, Sm12, Sm17, and S4aΣ) were used to determine the genotype of collected S. avenae clones as detailed in Huang, Liu, Wang, Shi, and Simon (2015) (Supporting information Table S1, for more details also see Simon et al, 1999).…”

Section: Aphid Collection and Colony Establishmentmentioning

confidence: 99%

Effects of a presumably protective endosymbiont on life‐history characters and their plasticity for its host aphid on three plants

Liu

Zhang

et al. 2018

Ecology and Evolution

Self Cite

View full text Add to dashboard Cite

Hamiltonella defensa is well known for its protective roles against parasitoids for its aphid hosts, but its functional roles in insect‐plant interactions are less understood. Thus, the impact of H. defensa infections on life‐history characters and the underlying genetic variation for the grain aphid, Sitobion avenae (Fabricius), was explored on three plants (i.e., wheat, oat, and rye). Compared to cured lines, H. defensa infected lines of S. avenae had lower fecundity on wheat and oat, but not on rye, suggesting an infection cost for the aphid on susceptible host plants. However, when tested on rye, the infected lines showed a shorter developmental time for the nymphal stage than corresponding cured lines, showing some benefit for S. avenae carrying the endosymbiont on resistant host plants. The infection of H. defensa altered genetic variation underlying its host S. avenea’s life‐history characters, which was shown by differences in heritabilities and genetic correlations of life‐history characters between S. avenae lines infected and cured of the endosymbiont. This was further substantiated by disparity in G‐matrices of their life‐history characters for the two types of aphid lines. The G‐matrices for life‐history characters of aphid lines infected with and cured of H. defensa were significantly different from each other on rye, but not on oat, suggesting strong plant‐dependent effects. The developmental durations of infected S. avenae lines showed a lower plasticity compared with those of corresponding cured lines, and this could mean higher adaptability for the infected lines.Overall, our results showed novel functional roles of a common secondary endosymbiont (i.e., H. defensa) in plant‐insect interactions, and its infections could have significant consequences for the evolutionary ecology of its host insect populations in nature.

show abstract

“…; Dai et al. ). Natural enemies, parasitoids (Ceryngier and Pankanin‐Franczyk ; Dębek‐Jankowska and Barczak ; Barczak et al.…”

Section: Introductionmentioning

confidence: 98%

Annual predictions of the peak numbers of Sitobion avenae infesting winter wheat

Honěk

Martinková

Dixon

et al. 2016

J Applied Entomology

View full text Add to dashboard Cite

Sitobion avenae is the most abundant aphid that infests the ears of winter wheat in central Europe. Control of this pest will benefit from prediction of its maximum abundances on ears. We attempted to predict the maximum numbers of this species infesting the ears using earlier counts of this species in ears and on leaves using data collected in the Czech Republic in 2002–2014. The numbers of aphids on particular leaves and the ears were recorded at weekly intervals. The maximum numbers infesting the ears were significantly related to aphid counts on the ears made 1 week, 2 weeks and even 3 weeks before the peak. A regression based only on plots where there were aphids (non‐zero aphid counts) recorded 3 weeks prior to the peak resulted in a critical number of ≥0.44 aphids/ear, which if exceeded resulted in a harmful maximum abundance of ≥5 aphids/ear at the peak. We also regressed maximum numbers infesting ears on numbers of S. avenae on leaves recorded 1, 2 and 3 weeks after earing, which all resulted in reliable predictions. Regression of maximum abundance on non‐zero aphid counts on the leaves in week 3 after earing revealed a critical number of ≥0.59 aphids/tiller. Zero aphid counts resulted in only 3% of cases of a harmful maximum abundance in ears. Using records of the numbers on flag leaves, which make up 58% of the S. avenae population present on the foliage, also provided reliable predictions of maximum abundance in ears. Predicting maximum numbers of aphids from earlier records of the numbers of aphids on leaves or ears is thus possible. The prediction may be further improved by increasing the precision with which the numbers of aphids initially infesting the crop are estimated.

show abstract

Genetic Basis and Selection for Life-History Trait Plasticity on Alternative Host Plants for the Cereal Aphid Sitobion avenae

Cited by 19 publications

References 52 publications

Probing behaviors and their plasticity for the aphid Sitobion avenae on three alternative host plants

Probing behaviors and their plasticity for the aphid Sitobion avenae on three alternative host plants

Effects of a presumably protective endosymbiont on life‐history characters and their plasticity for its host aphid on three plants

Annual predictions of the peak numbers of Sitobion avenae infesting winter wheat

Contact Info

Product

Resources

About