Table 1.
Mutant | Phenotypic Characteristics |
---|---|
Lotus japonicus | |
nin | Blocked in Nod factor–induced responses in the inner cell layers, but extensive curling of root hairs. |
NIN encodes a putative transcription factor. | |
Medicago sativa | |
MNNN1008 (nn1) | Blocked in all Nod factor–induced responses. Myc−. |
Putative ortholog of dmi2 and sym19. | |
Medicago truncatula | |
dmi1 | Blocked in all Nod factor–induced responses. Myc−. |
dmi2 | Blocked in all Nod factor–induced responses. Myc−. Putative ortholog of nn1 and sym19. |
dmi3 | Blocked in many Nod factor–induced responses, except Ca2+ oscillation for which it shows an |
increased sensitivity. Myc−. | |
hcl | Blocked in root hair curling. |
nsp | Blocked in Nod factor–induced response in the inner cell layers. |
skl | Ethylene insensitive. An increased number nodule primordia are formed opposite the proto phloem poles. Increased sensitivity to Nod factors in respect to Ca2+ oscillation. |
Pisum sativum | |
SYM2 | Controls infection thread formation in relation to Nod factor structure. |
Occurs as natural variation. | |
sym8 | Blocked in all Nod factor–induced responses. Myc−. |
sym9 | Blocked in all Nod factor–induced responses, except Ca2+ oscillation. Myc−. |
sym10 | Blocked in all Nod factor–induced responses. Myc+. |
sym19 | Blocked in all Nod factor–induced responses. Myc−. Putative ortholog of nn1 and dmi2. |
sym30 | Blocked in all Nod factor–induced responses, except Ca2+ oscillation. Myc−. |
(Myc+), able to establish a mycorrhizal interaction, and (Myc−), not able to establish a mycorrhizal interaction, for mutants blocked at an early stage of nodulation. For references, see text.