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ABSTRACT: Comparative microbiome of T. absoluta before and after pesticide application

PROVIDER: PRJNA865471 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR20766470_1.fastq.gz	Fastqsanger.gz
	SRR20766471_1.fastq.gz	Fastqsanger.gz
	SRR20766472_1.fastq.gz	Fastqsanger.gz
	SRR20766473_1.fastq.gz	Fastqsanger.gz
	SRR20766474_1.fastq.gz	Fastqsanger.gz

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Project description:The leaf miner, Tuta absoluta, is a notorious destructive pest of tomato that causes important losses worldwide. Breeding of resistant/tolerant tomato cultivars could be an effective strategy for T. absoluta management but, despite the economic importance of tomato, very limited information is available about its response to this treat. To elucidate the defense mechanisms to the herbivore feeding a comparative analysis was performed between a tolerant and susceptible cultivated tomato at both morphological and at transcriptome level to highlight constitutive leaf barriers, molecular and biochemical mechanisms to counter the effect of T. absoluta attack. The tolerant genotype showed an enhanced constitutive barrier due to the higher density of trichomes and increased inducible reactions upon mild infestation thanks to the activation/repression of key transcription factors regulating a higher number of genes involved in cuticle formation and cell wall strength as well as of antinutritive enzymes, and genes involved in the production of chemical toxins and bioactive secondary metabolites. Overall, our findings provide an important foundation for further understanding the insect resistance mechanisms of resistant/tolerant varieties that can be exploited for developing T. absoluta tolerant cultivars, acting as important component of integrated pest management strategy for more sustainable production.

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Project description:Tomato leafminer (Tuta absoluta) is a major pest of solanaceous plant species and causes heavy economic losses to the tomato crop. T. absoluta have been developed resistance to many chemical insecticides and have serious impacts on human health as well as environment. To overcome the ill effects of insecticides, ecofriendly approachis needed and among various biological microbes, entomopathogenic fungi is reliable and cost effective. The entomopathogenic fungi, like Beauveria bassiana and Purpureocillium lilacinum have ability to control pest population. The present study was conducted to study the interaction of B. bassiana and P. lilacinum at proteomic level to understand post infection effects. The analysis showed that in fourth instar larvae of T. absoluta, and the 442 and 423 proteins were significantly dysregulated upon infection with P. lilacinum and B. bassiana respectively. The present study concluded entomopathogenic fungal infection decline the immune system of T. absoluta larvae and can be adopted in for control of T. absoluta insect pest.

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