Project description:<p>Telenomus remus, an egg parasitoid capable of penetrating multi-layered egg masses, has emerged as a promising candidate for the biological control of Spodoptera frugiperda. Nevertheless, our prior investigations have uncovered that its limited cold tolerance represents a critical bottleneck in mass rearing. To overcome this challenge, the overarching objectives were to identify candidate genes and metabolites associated with cold tolerance, investigate the dynamic changes of cryoprotectants under different stress conditions, and elucidate the cold tolerance mechanisms of T. remus. The results revealed that the survival rates of T. remus declined progressively as temperature decreased. Notably, a significant accumulation of trehalose was observed as the stress temperature decreased. Integrated multi-omics analysis indicated that the starch and sucrose metabolism pathway played a key role in mediating cold tolerance in T. remus. Within this metabolic pathway, the expression levels of GAA (α-glucosidase) and GYS (glycogen synthase) exhibited a clear temperature-dependent upregulation trend. Collectively, these findings suggest that T. remus adopted a cold-tolerance strategy centered around trehalose accumulation. These research advances our understanding of the molecular and biochemical foundations of cold adaptation in T. remus, while also highlighting trehalose-mediated osmotic regulation as a prioritized research direction for future ectotherm thermotolerance studies.</p>
2025-06-09 | MTBLS12473 | MetaboLights
Project description:The mitochondrial genome of Telenomus remus (Hymenoptera: Platygastridae)
| PRJNA691080 | ENA
Project description:Novel gene rearrangement in the complete mitochondrial genome of Telenomus remus (Hymenoptera: Scelionidae)
Project description:Telenomus remus Nixon, 1937 is an important parasitoid of lepidopterans. We sequenced the mitochondrial genome of T. remus, 15,500 bp in size, and possessed all 37 typical mitochondrial genes. A few tRNAs show gene arrangements compared with the ancestral gene order, mainly involving in the four tRNA clusters (E-C-Y-Q-I-A, D-K, N-F-S1-R, and M-V). The nucleotide sequences of 13 protein-coding genes of this sequence and another seven species from Platygastridae were used for phylogenetic analysis by MrBayes, with two species from Cynipoidea as an outgroup. The topology demonstrated that T. remus was most closely related to Telenomus sp.
Project description:Near isogenic wheat lines(NILs), differing in the presence of both or none of the FHB-resistance QTL Fhb1 and Qfhs.ifa-5A, have been sequenced using Illumina HiSeq2000 under disease pressure (3, 6, 12, 24, 36, 48 hai) as well as with mock-inoculation, to discern transcriptional differences induced by Fusarium graminearum. The NILs are BC5F2 lines generated from the Mexican Spring wheat line CM-82036, the resistance QTL donor line, as recurrent background and the susceptible German Spring wheat line Remus as the donor of the susceptible QTL alleles.
