Control of root architecture and nodulation by the LATD/NIP transporter

Plant Signal Behav. 2010 Nov;5(11):1365-9. doi: 10.4161/psb.5.11.13165. Epub 2010 Nov 1.

Abstract

The Medicago truncatula LATD/NIP gene is essential for the development of lateral and primary root and nitrogen-fixing nodule meristems as well as for rhizobial invasion of nodules. LATD/NIP encodes a member of the NRT1(PTR1) nitrate and di-and tri-peptide transporter family, suggesting that its function is to transport one of these or another compound(s). Because latd/nip mutants can have their lateral and primary root defects rescued by ABA, ABA is a potential substrate for transport. LATD/NIP expression in the root meristem was demonstrated to be regulated by auxin, cytokinin and abscisic acid, but not by nitrate. LATD/NIP's potential function and its role in coordinating root architecture and nodule formation are discussed.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.
  • Review

MeSH terms

  • Carrier Proteins / genetics
  • Carrier Proteins / metabolism*
  • Gene Expression Regulation, Plant / physiology
  • Medicago truncatula / genetics
  • Medicago truncatula / physiology*
  • Plant Proteins / genetics
  • Plant Proteins / metabolism*
  • Plant Root Nodulation / physiology*

Substances

  • Carrier Proteins
  • Plant Proteins