| Phenotype Detail | The mutant makes small, white nodules and has defects in nitrogen fixation. It can induce all the genes tested (MtLEC4, MtN31, MtCAM1, ENOD2, and MtLB1). It forms infection threads that proceed through the cortical cells and produce limited nodule-like structures. The infection threads are indistinguishable from those of wild-type plants. It is unknown whether bacteria can differentiate into bacteroids. Bacterial penetration into epidermal cells and into the outer cortical cells surrounding the nascent nodule of mutant plants is morphologically indistinguishable from those in wild-type plants. Bacterial colonization of nodule parenchyma cells is also indistinguishable between mutants and wild type. |
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