These authors contributed equally to this work.
A putative transporter is essential for integrating nutrient and hormone signaling with lateral root growth and nodule development in Medicago truncatula
Article first published online: 20 JAN 2010
© 2010 The Authors. Journal compilation © 2010 Blackwell Publishing Ltd
The Plant Journal
Volume 62, Issue 1, pages 100–112, April 2010
How to Cite
Yendrek, C. R., Lee, Y.-C., Morris, V., Liang, Y., Pislariu, C. I., Burkart, G., Meckfessel, M. H., Salehin, M., Kessler, H., Wessler, H., Lloyd, M., Lutton, H., Teillet, A., Sherrier, D. J., Journet, E.-P., Harris, J. M. and Dickstein, R. (2010), A putative transporter is essential for integrating nutrient and hormone signaling with lateral root growth and nodule development in Medicago truncatula. The Plant Journal, 62: 100–112. doi: 10.1111/j.1365-313X.2010.04134.x
Genbank accession GQ401665 contains the LATD/NIP sequence.
- Issue published online: 29 MAR 2010
- Article first published online: 20 JAN 2010
- Received 9 October 2009; revised 12 December 2009; accepted 21 December 2009; published online 16 February 2010.
- nodule development;
- lateral root development;
- root architecture;
- symbiotic nitrogen fixation;
- Medicago truncatula;
- NRT1(PTR) gene family
Legume root architecture involves not only elaboration of the root system by the formation of lateral roots but also the formation of symbiotic root nodules in association with nitrogen-fixing soil rhizobia. The Medicago truncatula LATD/NIP gene plays an essential role in the development of both primary and lateral roots as well as nodule development. We have cloned the LATD/NIP gene and show that it encodes a member of the NRT1(PTR) transporter family. LATD/NIP is expressed throughout the plant. pLATD/NIP-GFP promoter–reporter fusions in transgenic roots establish the spatial expression of LATD/NIP in primary root, lateral root and nodule meristems and the surrounding cells. Expression of LATD/NIP is regulated by hormones, in particular by abscisic acid which has been previously shown to rescue the primary and lateral root meristem arrest of latd mutants. latd mutants respond normally to ammonium but have defects in responses of the root architecture to nitrate. Taken together, these results suggest that LATD/NIP may encode a nitrate transporter or transporter of another compound.