The Genetic Complexity of Type-IV Trichome Development Reveals the Steps towards an Insect-Resistant Tomato.

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 regio

SUBMITTER: Vendemiatti E 

PROVIDER: S-EPMC9148003 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature