Light affects tissue patterning of the hypocotyl in the shade-avoidance response. Botterweg-Paredes, E., Blaakmeer, A., Hong, S., Sun, B., Mineri, L., Kruusvee, V., Xie, Y., Straub, D., Ménard, D., Pesquet, E., & Wenkel, S. PLOS Genetics, 16(3):e1008678, March, 2020. ![Light affects tissue patterning of the hypocotyl in the shade-avoidance response [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Plants have evolved strategies to avoid shade and optimize the capture of sunlight. While some species are tolerant to shade, plants such as Arabidopsis thaliana are shade-intolerant and induce elongation of their hypocotyl to outcompete neighboring plants. We report the identification of a developmental module acting downstream of shade perception controlling vascular patterning. We show that Arabidopsis plants react to shade by increasing the number and types of water-conducting tracheary elements in the vascular cylinder to maintain vascular density constant. Mutations in genes affecting vascular patterning impair the production of additional xylem and also show defects in the shade-induced hypocotyl elongation response. Comparative analysis of the shade-induced transcriptomes revealed differences between wild type and vascular patterning mutants and it appears that the latter mutants fail to induce sets of genes encoding biosynthetic and cell wall modifying enzymes. Our results thus set the stage for a deeper understanding of how growth and patterning are coordinated in a dynamic environment.
@article{botterweg-paredes_light_2020,
title = {Light affects tissue patterning of the hypocotyl in the shade-avoidance response},
volume = {16},
issn = {1553-7404},
url = {https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1008678},
doi = {10.1371/journal.pgen.1008678},
abstract = {Plants have evolved strategies to avoid shade and optimize the capture of sunlight. While some species are tolerant to shade, plants such as Arabidopsis thaliana are shade-intolerant and induce elongation of their hypocotyl to outcompete neighboring plants. We report the identification of a developmental module acting downstream of shade perception controlling vascular patterning. We show that Arabidopsis plants react to shade by increasing the number and types of water-conducting tracheary elements in the vascular cylinder to maintain vascular density constant. Mutations in genes affecting vascular patterning impair the production of additional xylem and also show defects in the shade-induced hypocotyl elongation response. Comparative analysis of the shade-induced transcriptomes revealed differences between wild type and vascular patterning mutants and it appears that the latter mutants fail to induce sets of genes encoding biosynthetic and cell wall modifying enzymes. Our results thus set the stage for a deeper understanding of how growth and patterning are coordinated in a dynamic environment.},
language = {en},
number = {3},
urldate = {2022-11-30},
journal = {PLOS Genetics},
author = {Botterweg-Paredes, Esther and Blaakmeer, Anko and Hong, Shin-Young and Sun, Bin and Mineri, Lorenzo and Kruusvee, Valdeko and Xie, Yakun and Straub, Daniel and Ménard, Delphine and Pesquet, Edouard and Wenkel, Stephan},
month = mar,
year = {2020},
keywords = {Arabidopsis thaliana, Auxins, Gene expression, Genetically modified plants, Hypocotyl, Seedlings, Transcription factors, White light},
pages = {e1008678},
}
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