BIIDXI, a DUF642 cell wall protein, is involved in hypocotyl growth via auxin efflux
Por:
Salazar-Iribe A., Cruz-Valderrama J.E., Jímenez-Durán K., Gómez-Maqueo X., Gamboa-deBuen A.
Publicada:
1 dic 2018
Resumen:
Auxin is involved in hypocotyl elongation in response to different
environmental factors. BIIDXI is a cell wall DUF642 protein that
participates in the regulation of the degree of
pectin-methylesterification of the cell wall in different tissues,
including hypocotyls. Under continuous light, bdx-1 seedlings presented
longer hypocotyls than those of WT, while BIIDXI-overexpressed
hypocotyls were auxin resistant. Auxin accumulation was observed in
epidermal cells from bdx-1 hypocotyls, and the distribution pattern of
PIN1 proteins differed. Moreover, the gravitropic response of bdx-1, a
process that is highly dependent on auxin flux, was increased. In this
study, we determined that BIIDXI is involved in hypocotyl elongation
through the regulation of auxin flux.
Filiaciones:
Salazar-Iribe A.:
Instituto de Ecología, Universidad Nacional Autónoma de México, Ciudad Universitaria CP, Ciudad de México, 04510, Mexico
Cruz-Valderrama J.E.:
Instituto de Ecología, Universidad Nacional Autónoma de México, Ciudad Universitaria CP, Ciudad de México, 04510, Mexico
Jímenez-Durán K.:
Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria CP, Ciudad de México, 04510, Mexico
Gómez-Maqueo X.:
Instituto de Ecología, Universidad Nacional Autónoma de México, Ciudad Universitaria CP, Ciudad de México, 04510, Mexico
Gamboa-deBuen A.:
Instituto de Ecología, Universidad Nacional Autónoma de México, Ciudad Universitaria CP, Ciudad de México, 04510, Mexico
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