ORCID Profile
0000-0003-0811-2413
Current Organisations
Universidade de São Paulo
,
Universidade de Trás-os-Montes e Alto Douro
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Publisher: Scandinavian University Press / Universitetsforlaget AS
Date: 04-2017
DOI: 10.1111/LET.12197
Publisher: Springer Science and Business Media LLC
Date: 10-01-2017
DOI: 10.1038/SREP39728
Publisher: MDPI AG
Date: 14-05-2022
Abstract: The leaves of the wild tomato Solanum galapagense 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.
Publisher: Scandinavian University Press / Universitetsforlaget AS
Date: 07-2017
DOI: 10.1111/LET.12216
Publisher: Geological Society of America
Date: 05-2009
DOI: 10.1130/G25513A.1
Publisher: Informa UK Limited
Date: 16-12-2013
Publisher: Czech Geological Survey
Date: 30-09-2010
Publisher: Springer International Publishing
Date: 2014
No related grants have been discovered for Artur Sá.