All nod genes of Rhizobium meliloti are involved in alfalfa nodulation by exo mutants.
نویسندگان
چکیده
Nodulation of alfalfa by exoB mutants of Rhizobium meliloti occurred without root hair curling or infection thread formation. nod exoB double mutants had the same nodulation deficiency as single nod mutants. Therefore, all the known nod genes are involved in nodule induction by exoB mutants, which apparently occurs via intercellular invasion.
منابع مشابه
Structural studies of alfalfa roots infected with nodulation mutants of Rhizobium meliloti.
Alfalfa roots infected with four nodulation defective (Nod-) mutants of Rhizobium meliloti which were generated by transposon Tn5 mutagenesis were examined by light and electron microscopy. In one class of Nod- mutants, which we can nonreactive, the bacteria did not induce root hair curling or penetrate host cells. In a second class of Nod- mutants, which we call reactive, the bacteria induced ...
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ورودعنوان ژورنال:
- Journal of bacteriology
دوره 170 2 شماره
صفحات -
تاریخ انتشار 1988