Project description:This study was designed to identify the sRNAs in Aphis gossypii (cotton-melon aphid) during Vat-mediated resistance in teraction with melon
Project description:Diaphorina citriis a vector of ‘CandidatusLiberibacter asiaticus,’(CLas), associated with citrus greening or Huanglongbing (HLB) disease in citrus. D. citriexhibits two group three different color morph variants, blueand non-blue (includes gray and yellow). Blue morphs have a greater capacity for long-distance flight while has lower efficiency in CLas transmission as compared to non-blue morphswhich influences disease epidemiology. In this study, wecompare the protein profilesof two-color morphsand evaluate the effect of CLas infection on abundance of pre-identified proteins in each color morphs. Our results showed that blue morphs have higher abundance of the immunity-associated proteins, while their abundance were upregulated dramatically in the non-blue morphcompared to blue morphin result of CLas infection. This observation proposes blue morph has higher immunity and CLas trigger the immunity in both morph while in non-blue’s response is late and non-effective.Further, challenging both color morphs byentomopathogenic fungi Beauveria bassiana, were showed significantly lower mortality in blue morph vs non-blue. Also, to test the effect of delayed response in CLas acquisition, we did CLas acquisition assay after priming immunity by feeding heat-killed Liberibacter crescens to both color-morphs. The obtained results were showed that priming immunity in non-blue morph can significantly decrease CLas acquisition as close as the level of CLas acquisition in blue morph. Taking all these in account propose that higher immunity in blue morph suppress CLas acquisition in a way that CLas acts as a pathogenand costly forACP. While in non-blue ACP, CLas triggers the immunity but the delayed immunity is not effective to block CLas from acquisition.
Project description:This study was designed to identify the sRNAs in Aphis gossypii (cotton-melon aphid) during Vat-mediated resistance in teraction with melon Methods: Whole insects were collected from susceptible (Vat-) and resistant (Vat+) plants after 48 hours of feeding. Total RNA was extracted from the aphids and enriched for LMW RNA and small RNA libraries were constructed using standard protocols and deep sequenced using Illumina GAII analyzer.
