Swarup K., Benkova E., Swarup R., Casimiro I., Péret Benjamin, Yang Y., Parry G., Nielsen E., De Smet I., Vanneste S., Levesque M. P., Carrier D., James N., Calvo V., Ljung K., Kramer E., Roberts R., Graham N., Marillonnet S., Patel K., Jones J. D. G., Taylor C. G., Schachtman D. P., May S., Sandberg G., Benfey P., Friml J., Kerr I., Beeckman T., Laplaze Laurent, Bennett M. J. (2008). The auxin influx carrier LAX3 promotes lateral root emergence. Nature Cell Biology, 10 (8), p. 946-954. ISSN 1465-7392.
Titre du document
The auxin influx carrier LAX3 promotes lateral root emergence
Année de publication
2008
Auteurs
Swarup K., Benkova E., Swarup R., Casimiro I., Péret Benjamin, Yang Y., Parry G., Nielsen E., De Smet I., Vanneste S., Levesque M. P., Carrier D., James N., Calvo V., Ljung K., Kramer E., Roberts R., Graham N., Marillonnet S., Patel K., Jones J. D. G., Taylor C. G., Schachtman D. P., May S., Sandberg G., Benfey P., Friml J., Kerr I., Beeckman T., Laplaze Laurent, Bennett M. J.
Source
Nature Cell Biology, 2008,
10 (8), p. 946-954 ISSN 1465-7392
Lateral roots originate deep within the parental root from a small number of founder cells at the periphery of vascular tissues and must emerge through intervening layers of tissues. We describe how the hormone auxin, which originates from the developing lateral root, acts as a local inductive signal which re-programmes adjacent cells. Auxin induces the expression of a previously uncharacterized auxin influx carrier LAX3 in cortical and epidermal cells directly overlaying new primordia. Increased LAX3 activity reinforces the auxin-dependent induction of a selection of cell-wall-remodelling enzymes, which are likely to promote cell separation in advance of developing lateral root primordia.
Plan de classement
Sciences du monde végétal [076]
Identifiant IRD
PAR00002613
