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.
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:The cotton-melon aphid, Aphis gossypii Glover, is a major insect pest worldwide. Lysiphlebia japonica (Ashmead) is an obligate parasitic wasp of A. gossypii, and has the ability to regulate lipid metabolism of the cotton-melon aphid. Lipids are known to play critical roles in energy homeostasis, membrane structure, and signaling. However, the parasitoid genes that regulate fat metabolism and lipid composition in aphids are not known. 34 glycerolipids and 248 glycerophospholipids were identified in this study. We have shown that a 3-day parasitism of aphids can induce significant changes in the content and acyl chain composition of triacylglycerols (TAGs) and subspecies composition of glycerophospholipids content and acyl chains. It also upregulate the expression of several genes involved in triacylglycerol synthesis and glycerophospholipid metabolism. Pathway analysis showed that a higher expression of genes involved in the tricarboxylic acid cycle and glycolysis pathways may contribute to TAGs synthesis in parasitized aphids. Interestingly, the higher expression of genes in the sphingomyelin pathway and reduced sphingomyelin content may be related to the reproductive ability of A. gossypii. We provide a comprehensive resource describing the molecular signature of parasitized A. gossypii particularly the changes associated with the lipid metabolism and discuss the biological and ecological significance of this change.
Project description:The cotton - melon aphid Aphis gossypii is an extremely polyphagous sap feeding insect which infests more than 900 crops worldwide and posing a severe threat to farmers. The salivary proteins acts as interface between aphid and their host plant.However, the cotton aphid salivary proteome was not studied yet. Identifying the salivary proteins helps in better understanding of aphid adaptation to their host plant which aids us to search for novel plant genetic source.
