Project description:The goals of this study are to obtain the transcriptome profiling (RNA-seq) of different developmental stages and tissues in Ostrinia furnacalis. Methods: O. furnacalis embryos were collected less than 12 h post oviposition. 1st, 3rd and 5th instar of the Asian corn borer, which represents the newly hatched larvae, the middle stage of larvae and the mature larvae, was harvested for subsequent experiments. Pupae and adults were grouped into females and males, then female and male samples were mixed at the ratio of 1:1. The 3rd instar larvae were anesthetized on an ice plate for tissue extraction. The midgut, fat body and silk gland were isolated. All these samples were generated by deep sequencing, in triplicate, using Illumina NovaSeq 6000. The sequence reads that passed quality filters were analyzed at the transcript isoform level with two methods: Burrows–Wheeler Aligner (BWA) followed by ANOVA (ANOVA) and TopHat followed by Cufflinks. Results: We obtained the transcriptome profiling (RNA-seq) of different developmental stages and tissues in Ostrinia furnacalis Conclusions: Our study representsa detailed analysis of different developmental stages and tissues in Ostrinia furnacalis
2022-03-04 | GSE197663 | GEO
Project description:Asian corn borer (Ostrinia furnacalis) population genomics
| PRJNA865782 | ENA
Project description:Antennal transcriptome of the Asian corn borer (Ostrinia furnacalis)
Project description:This a reciprocal transplant experiment. Two hebivorous lepidoptera species (Ostrinia nubilalis and Ostrinia scapulalis) have been fed either their preferred plant (corn for O.nubilalis and Mugwort for O. scapulalis) or the reciprocal plant. At 4th larval instar, RNA was extracted from whole larvae, size selected to enrich in small RNAs and sequenced by Illumina single-end 50bp.
Project description:Insect pathogenic fungus Beauveria bassiana in one of the best studied insect biocontrol fungus, which infects insects by cuticle penetration. After breaking the cuticles, the fungus will propagate in insect hemocoel and kill insect hosts. It has also been found that the mycelia of B. bassiana can penetrate plant tissues to reach insect inside plant, e.g. corn borer (Ostrinia furnacalis), but do not cause damage to plants. The mechanism of fungal physiological plasticity is poorly understood. To accompany our genome sequencing work of B. bassiana strain ARSEF 2860, fungal transcriptional responses to different niches were studied using an Illumina RNA_seq technique. To examine fungal response to insect cuticle, conidia were inoculated on locust hind wings for 24 hours before used for RNA extraction. To evaluate fungal adaptation to insect hemocole, the fifth instar larvae of cotton bollworms were injected with spore suspension and fungal cells isolated by centrifugation in a step gradient buffer. To unveil the mechanism of interaction with plants, the fungus was grown in corn root exudates for 24 hours. After RNA sequencing, around three million tags were acquired for each sample and fungal transcriptional profiles were compared. Unveiling gene differential expression patterns when the insect biocontrol fungus Beauveria bassiana grown in insect hemocoel, corn root exudates and on insect cuticles.
Project description:Insect pathogenic fungus Beauveria bassiana in one of the best studied insect biocontrol fungus, which infects insects by cuticle penetration. After breaking the cuticles, the fungus will propagate in insect hemocoel and kill insect hosts. It has also been found that the mycelia of B. bassiana can penetrate plant tissues to reach insect inside plant, e.g. corn borer (Ostrinia furnacalis), but do not cause damage to plants. The mechanism of fungal physiological plasticity is poorly understood. To accompany our genome sequencing work of B. bassiana strain ARSEF 2860, fungal transcriptional responses to different niches were studied using an Illumina RNA_seq technique. To examine fungal response to insect cuticle, conidia were inoculated on locust hind wings for 24 hours before used for RNA extraction. To evaluate fungal adaptation to insect hemocole, the fifth instar larvae of cotton bollworms were injected with spore suspension and fungal cells isolated by centrifugation in a step gradient buffer. To unveil the mechanism of interaction with plants, the fungus was grown in corn root exudates for 24 hours. After RNA sequencing, around three million tags were acquired for each sample and fungal transcriptional profiles were compared.
Project description:Yellow stem borer (YSB), Scirpophaga incertulas (Walker) (Lepidoptera: Crambidae), is a major pest of rice in India, that can lead to 20-60% loss in rice production. Effective management of YSB infestation is challenged by the non-availability of adequate source of resistance and poor understanding of resistance mechanisms, thus necessitating studies for generating resources to breed YSB resistant rice and to understand rice-YSB interaction. Here we performed transcritpomics profiling of rice lines with contrasting response to YSB. RNA-sequencing of the susceptible (SM) and tolerant (SM92 lines revealed multiple genes to be differentially regulated upon YSB infestation. Comparative transcriptome analysis revealed a putative candidate gene that was predicted to encode an alpha-amylase inhibitor. Analysis of the transcriptome and metabolite profiles further revealed a possible link between phenylpropanoid metabolism and YSB tolerance.