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- W4280491028 abstract "The leaves of the wild tomato Solanumgalapagense harbor type-IV glandular trichomes (GT) that produce high levels of acylsugars (AS), conferring insect resistance. Conversely, domesticated tomatoes (S. lycopersicum) lack type-IV trichomes on the leaves of mature plants, preventing high AS production, thus rendering the plants more vulnerable to insect predation. We hypothesized that cultivated tomatoes engineered to harbor type-IV trichomes on the leaves of adult plants could be insect-resistant. We introgressed the genetic determinants controlling type-IV trichome development from S.galapagense into cv. Micro-Tom (MT) and created a line named Galapagos-enhanced trichomes (MT-Get). Mapping-by-sequencing revealed that five chromosomal regions of S. galapagense were present in MT-Get. Further genetic mapping showed that S. galapagense alleles in chromosomes 1, 2, and 3 were sufficient for the presence of type-IV trichomes on adult organs but at lower densities. Metabolic and gene expression analyses demonstrated that type-IV trichome density was not accompanied by the AS production and exudation in MT-Get. Although the plants produce a significant amount of acylsugars, those are still not enough to make them resistant to whiteflies. We demonstrate that type-IV glandular trichome development is insufficient for high AS accumulation. The results from our study provided additional insights into the steps necessary for breeding an insect-resistant tomato." @default.
- W4280491028 created "2022-05-22" @default.
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- W4280491028 date "2022-05-14" @default.
- W4280491028 modified "2023-10-15" @default.
- W4280491028 title "The Genetic Complexity of Type-IV Trichome Development Reveals the Steps towards an Insect-Resistant Tomato" @default.
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- W4280491028 doi "https://doi.org/10.3390/plants11101309" @default.
- W4280491028 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35631734" @default.
- W4280491028 hasPublicationYear "2022" @default.
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