Comprehensive observation of trichome development in Micro-tom tomato
By A Mystery Man Writer
Last updated 17 Jul 2024
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Trichomes help plants defend against various stresses by formation of a protective barrier. Although the unicellular trichomes in <i>Arabidopsis</i> have been well studied, little is known of the development of multicellular trichomes in tomato. With seven morphologically and functionally different types, tomato trichomes are more complex than the unicellular trichomes in <i>Arabidopsis</i>. Here, we comprehensively analyzed the spatiotemporal pattern of tomato trichome development. Our observations show that the gradual reduction of type I/IV trichomes during leaf development is accompanied by an increase of other trichome types. We further examined the gland development of type I/IV trichomes by constructing a marker reporter, pSlAT2: GUS-YFP which is specifically expressed in the top cell of the trichomes. Interestingly, we found the multicellular base of trichomes is initiated as early as the two-cell stage. Through tracking a nuclear marker, H2B-GFP in tomato trichomes, we found the correlation between stalk cell length and nuclear size, suggesting that cell ploidy level could affect trichome cell size. Finally, we found type VII glandular trichomes exhibit two morphologically distinct forms, with the majority covered by a wax-like substance, which could help to form extra storage space for secretory metabolites. Our results provide the basis for further mechanistic study of trichome development in tomato.
![Comprehensive observation of trichome development in Micro-tom tomato](https://www.biorxiv.org/content/biorxiv/early/2021/06/18/2021.06.18.448858/F8.large.jpg)
Introgression of type-IV glandular trichomes from Solanum
![Comprehensive observation of trichome development in Micro-tom tomato](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41438-020-00456-0/MediaObjects/41438_2020_456_Fig1_HTML.png)
Study of micro-trichome (mict) reveals novel connections between
![Comprehensive observation of trichome development in Micro-tom tomato](https://ars.els-cdn.com/content/image/1-s2.0-S0168945217300559-gr3.jpg)
Loss of type-IV glandular trichomes is a heterochronic trait in
![Comprehensive observation of trichome development in Micro-tom tomato](https://d3i71xaburhd42.cloudfront.net/1397fbc10e6c8c2c8e83c86389a5f67a568dd656/11-Figure9-1.png)
PDF] SlMYC1 Regulates Type VI Glandular Trichome Formation and
![Comprehensive observation of trichome development in Micro-tom tomato](https://www.researchgate.net/profile/David-Gang/publication/43355028/figure/fig3/AS:601678843748404@1520462823997/In-vitro-assay-with-purified-recombinant-CAHS-A-Sesquiterpenes-produced-by-M82-leaf_Q320.jpg)
In vitro assay with purified recombinant CAHS. A, Sesquiterpenes
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Development of a method to rapidly assess resistance
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Figure 2 from University of São Paulo “Luiz de Queiroz” College of
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Tomato Fruit Yield and Solar Radiation Intensity - Garden & Greenhouse
![Comprehensive observation of trichome development in Micro-tom tomato](https://d3i71xaburhd42.cloudfront.net/1397fbc10e6c8c2c8e83c86389a5f67a568dd656/9-Figure7-1.png)
PDF] SlMYC1 Regulates Type VI Glandular Trichome Formation and
![Comprehensive observation of trichome development in Micro-tom tomato](https://www.researchgate.net/publication/357980961/figure/fig1/AS:1141907350663168@1649263336010/H-is-required-for-JA-induced-trichome-development-a-d-Trichome-phenotype-on-leaves-of-AC_Q320.jpg)
Jiang CHANG Fujian Agriculture and Forestry University, Fuzhou
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