1887

Abstract

Surmmary

A strain of able to fix nitrogen in root nodules of clover plants lost its effectiveness when treated with deoxyribonucleic acid from an ineffective strain. Attempts to transform two ineffective strains to effectiveness failed, even when the donor of and the recipient strains were genetically related and apparently differed only in symbiotic property. The efficiency of transformation by to ineffectiveness was compared with mutagenic and selective treatments. The results support the idea that symbiotic effectiveness involves compatability between several plant and bacterial factors, changes in any one of which makes the bacterium ineffective.

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/content/journal/micro/10.1099/00221287-40-3-377
1965-09-01
2020-01-29
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