Open AccessTrichome regulator SlMIXTA‐like directly manipulates primary metabolism in tomato fruit
Author(s) -
Ying Shiyu,
Su Min,
Wu Yu,
Zhou Lu,
Fu Rao,
Li Yan,
Guo Hao,
Luo Jie,
Wang Shouchuang,
Zhang Yang
Publication year - 2020
Publication title -
plant biotechnology journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.525
H-Index - 115
eISSN - 1467-7652
pISSN - 1467-7644
DOI - 10.1111/pbi.13202
Subject(s) - trichome , biology , regulator , secondary metabolism , metabolic pathway , solanum , metabolism , primary metabolite , microbiology and biotechnology , shikimate pathway , gene , plant metabolism , biochemistry , botany , biosynthesis , rna
Summary Trichomes are storage compartments for specialized metabolites in many plant species. In trichome, plant primary metabolism is significantly changed, providing substrates for downstream secondary metabolism. However, little is known of how plants coordinate trichome formation and primary metabolism regulation. In this report, tomato ( Solanum lycopersicum ) trichome regulator SlMIXTA‐like is indicated as a metabolic regulation gene by mGWAS analysis. Overexpression of SlMIXTA‐like in tomato fruit enhances trichome formation. In addition, SlMIXTA‐like can directly bind to the promoter region of gene encoding 3‐deoxy‐7‐phosphoheptulonate synthase ( Sl DAHPS ) to activate its expression. Induction of Sl DAHPS expression enhances shikimate pathway activities and provides substrates for downstream secondary metabolism. Our data provide direct evidence that trichome regulator can directly manipulate primary metabolism, in which way plants can coordinate metabolic regulation and the formation of storage compartments for specialized metabolites. The newly identified SlMIXTA‐like can be used for future metabolic engineering.