Feeding Behavior Comparison of Soybean Aphid (Hemiptera: Aphididae) Biotypes on Different Soybean Genotypes

Chandran, Predeesh; Reese, John C.; Khan, Shah Alam; Wang, Dechun; Schapaugh, William T.; Campbell, Leslie R.

doi:10.1603/ec13126

Cited by 18 publications

(26 citation statements)

References 25 publications

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“…Nymphs and adults of the European pear psylla ( Cacopsylla pyri L.) do not ingest from the phloem in resistant selections of pear for any prolonged period, which suggests that resistance factors are located in the phloem sap rather than factors outside the phloem [26] . Factors inside and outside the phloem seem to be involved with resistance to the soybean aphid, Aphis glycines Matsumura where EPG studies showed the following: a. soybean aphids feeding on susceptible genotypes had a significantly greater duration of sieve element phase than when feeding on resistant genotypes, b. the time taken to reach the first sieve element phase in resistant genotypes was significantly greater than in susceptible ones, and c. most of the aphids reached sieve element phase in susceptible genotypes but only a few reached this phase in resistant genotypes [27] . The last two findings (b and c) are consistent with our results regarding fewer ACP stylet sheath termini reaching the vascular bundle in resistant vs. susceptible accessions.…”

Section: Discussionmentioning

confidence: 99%

Differences in Stylet Sheath Occurrence and the Fibrous Ring (Sclerenchyma) between xCitroncirus Plants Relatively Resistant or Susceptible to Adults of the Asian Citrus Psyllid Diaphorina citri (Hemiptera: Liviidae)

et al. 2014

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The Asian citrus psyllid (ACP, Diaphorina citri, Hemiptera: Liviidae), is the principal vector of the phloem-limited bacteria strongly associated with huanglongbing (HLB), the world’s most serious disease of citrus. Host plant resistance may provide an environmentally safe and sustainable method of controlling ACP and/or HLB. Two xCitroncirus accessions (hybrids of Poncirus trifoliata and Citrus spp.), that are relatively resistant (UN-3881) or relatively susceptible (Troyer-1459) to ACP adults with regard to adult longevity, were compared in relation to ACP feeding behavior and some structural features of the leaf midrib. The settling (putative feeding/probing) sites of ACP adults on various parts of the leaf were not influenced primarily by plant accession. However, fewer ACP stylet sheaths were found in the midrib and fewer stylet sheath termini reached the vascular bundle (phloem and/or xylem) in UN-3881 compared to Troyer-1459 plants. Furthermore, in midribs of UN-3881 leaves the fibrous ring (sclerenchyma) around the phloem was significantly wider (thicker) compared to that in midribs of Troyer-1459 leaves. Our data indicate that feeding and/or probing by ACP adults into the vascular bundle is less frequent in the more resistant (UN-3881) than in the more susceptible (Troyer-1459) accessions. Our results also suggest that the thickness of the fibrous ring may be a barrier to stylet penetration into the vascular bundle, which is important for successful ACP feeding on the phloem and for transmitting HLB-associated bacteria. These results may help in the development of citrus plants resistant to ACP, which in turn could halt or slow the spread of the HLB-associated bacteria by this vector.

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Section: Discussionmentioning

confidence: 99%

Differences in Stylet Sheath Occurrence and the Fibrous Ring (Sclerenchyma) between xCitroncirus Plants Relatively Resistant or Susceptible to Adults of the Asian Citrus Psyllid Diaphorina citri (Hemiptera: Liviidae)

et al. 2014

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“…Similarly, soybean aphids feeding on soybean genotypes that exhibit antibiosis and antixenosis had significantly higher number of potential drops compared to the soybean aphid-tolerant and susceptible genotypes (Baldin et al 2018). Taken together, these studies suggest that the brief sampling of cells by aphid stylets eventually lead to host plant acceptance or rejection, and the higher number of potential drops has been correlated with enhanced resistance to aphids (Tjallingii 2006;Chandran et al 2013;Baldwin et al 2018).…”

Section: Discussionmentioning

confidence: 92%

Resistance to greenbugs in the sorghum nested association mapping population

Grover

Wojahn

Varsani

et al. 2019

Arthropod-Plant Interactions

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The greenbug, Schizaphis graminum, is a serious pest of sorghum (Sorghum bicolor). For the past several decades, resistant sorghum hybrids have been used to control greenbug populations. However, the durability of plant resistance is frequently challenged by evolution of new greenbug biotypes, and there is a continuous need for screening of resistant germplasm for its effective management in the field. Natural variation in sorghum plants/populations provides distinct approaches to identify novel sources of resistance against greenbugs. In this study, we used the recently developed sorghum nested association mapping (NAM) population parental lines to understand sources of sorghum resistance to greenbugs. Using choice and no-choice assays, we have identified SC265 and Segaolane as the resistant and susceptible lines, respectively, to greenbugs compared to the wild-type plants. The Electrical Penetration Graph (EPG) analysis revealed that the greenbugs spent significantly lesser time in the xylem and sieve element phases while feeding on the resistant NAM parental line, SC265, compared to the susceptible (Segaolane) and wild-type (RTx430) sorghum lines. In addition, the EPG results indicated that there is no significant difference in the time to first probe, time to reach first sieve element, pathway phase, and non-probing phase among the three sorghum plants, which suggests that the resistance factors present in the vascular tissues of the resistant line (SC265) potentially contribute to the resistance mechanisms against greenbugs. Overall, SC265 NAM parental line showed a combination of antixenotic and antibiotic-mediated resistance mechanisms against greenbugs, whereas the susceptible line Segaolane displayed the least resistance to greenbugs.

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“…Different chemical cues can be present in these samples and thus be correlated to host plant acceptance by the insects (Tjallingii 2006). Because of this characteristic, a high number of potential drops is associated with greater difficulty of reaching phloem phases, and consequently, resistance of soybean genotypes (Chandran et al 2013). On other hand, some research hypothesizes that a greater number of potential drops is an indication of host plant acceptance by the insect, enabling it to reach the sieve element phase quickly (Diaz-Montano et al 2007).…”

Section: Discussionmentioning

confidence: 99%

“…Studies evaluating genotypes with both Rag1 and Rag2 genes have demonstrated that A. glycines development was reduced relative to lines with either Rag1 or Rag2 alone (Hill et al 2006(Hill et al , 2009. From the known A. glycines biotypes (defined by the capacity to develop on aphid-resistant soybeans genotypes), biotype 1 is unable to colonize soybean plants containing Rag1 or Rag2 (Hill et al 2010;Chandran et al 2013), biotype 2 can colonize Rag1, but does not colonize Rag2 soybeans (Kim et al 2008;Chandran et al 2013), and biotype 3 is able to colonize Rag2 plants as well as some others expressing different Rag genes (Hill et al 2010(Hill et al , 2012. In other studies, virulent populations of A. glycines (biotype 4) were capable of overcoming either the Rag1, Rag2, or both genes (Kim et al 2008;Hill et al 2010;Alt & Ryan-Mahmutagic 2013).…”

Section: Introductionmentioning

confidence: 99%

Feeding Behavior ofAphis glycines(Hemiptera: Aphididae) on Soybeans Exhibiting Antibiosis, Antixenosis, and Tolerance Resistance

Baldin

Stamm

Bentivenha

et al. 2018

Florida Entomologist

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Feeding Behavior Comparison of Soybean Aphid (Hemiptera: Aphididae) Biotypes on Different Soybean Genotypes

Cited by 18 publications

References 25 publications

Differences in Stylet Sheath Occurrence and the Fibrous Ring (Sclerenchyma) between xCitroncirus Plants Relatively Resistant or Susceptible to Adults of the Asian Citrus Psyllid Diaphorina citri (Hemiptera: Liviidae)

Differences in Stylet Sheath Occurrence and the Fibrous Ring (Sclerenchyma) between xCitroncirus Plants Relatively Resistant or Susceptible to Adults of the Asian Citrus Psyllid Diaphorina citri (Hemiptera: Liviidae)

Resistance to greenbugs in the sorghum nested association mapping population

Feeding Behavior ofAphis glycines(Hemiptera: Aphididae) on Soybeans Exhibiting Antibiosis, Antixenosis, and Tolerance Resistance

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