אסיף מאגר המחקר החקלאי

Strigolactones affect lateral root formation and root-hair elongation in Arabidopsis

Year:

2011

Source of publication :

Authors :

Volume :

233

Co-Authors:

Kapulnik, Y., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Delaux, P.-M., Surfaces Cellulaires et Signalisation chez les Végétaux, Université de Toulouse, UPS, UMR 5546, BP 42617, 31326 Castanet-Tolosan, France, UMR 5546, BP 42617, 31326 Castanet-Tolosan, France
Resnick, N., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Mayzlish-Gati, E., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Wininger, S., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Bhattacharya, C., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Séjalon-Delmas, N., Surfaces Cellulaires et Signalisation chez les Végétaux, Université de Toulouse, UPS, UMR 5546, BP 42617, 31326 Castanet-Tolosan, France, UMR 5546, BP 42617, 31326 Castanet-Tolosan, France
Combier, J.-P., Surfaces Cellulaires et Signalisation chez les Végétaux, Université de Toulouse, UPS, UMR 5546, BP 42617, 31326 Castanet-Tolosan, France, UMR 5546, BP 42617, 31326 Castanet-Tolosan, France
Bécard, G., Surfaces Cellulaires et Signalisation chez les Végétaux, Université de Toulouse, UPS, UMR 5546, BP 42617, 31326 Castanet-Tolosan, France, UMR 5546, BP 42617, 31326 Castanet-Tolosan, France
Belausov, E., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Beeckman, T., Department of Plant Systems Biology, VIB, Technologiepark 927, 9052 Ghent, Belgium, Department of Plant Biotechnology and Genetics, Ghent University, Technologiepark 927, 9052 Ghent, Belgium
Dor, E., Department of Phytopathology and Weed Research, Newe-Ya'ar Research Center, PO Box 1021, Ramat-Yishay, Israel
Hershenhorn, J., Department of Phytopathology and Weed Research, Newe-Ya'ar Research Center, PO Box 1021, Ramat-Yishay, Israel
Koltai, H., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan 50250, Israel

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Abstract:

Strigolactones (SLs) have been proposed as a new group of plant hormones, inhibiting shoot branching, and as signaling molecules for plant interactions. Here, we present evidence for effects of SLs on root development. The analysis of mutants flawed in SLs synthesis or signaling suggested that the absence of SLs enhances lateral root formation. In accordance, roots grown in the presence of GR24, a synthetic bioactive SL, showed reduced number of lateral roots in WT and in max3-11 and max4-1 mutants, deficient in SL synthesis. The GR24-induced reduction in lateral roots was not apparent in the SL signaling mutant max2-1. Moreover, GR24 led to increased root-hair length in WT and in max3-11 and max4-1 mutants, but not in max2-1. SLs effect on lateral root formation and root-hair elongation may suggest a role for SLs in the regulation of root development; perhaps, as a response to growth conditions. © 2010 Springer-Verlag.

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