Somebody claims that there some selfish rhizobia which take benefits from the host but do not induced nodulation at the host. I did not get enough evidence about this. Could anybody help me by giving some articles about this?
I truly agree with Antoun Sir about the white nodules that he mentioned, because if they have the rhizobia, then they would only use the carbon source without giving anything to the plant in return. These rhizobia may be referred to as selfish rhizobia.
Good luck Ali
Yes , thats the simplest way to identify the selfish rhizobia , my compliments to you Dr Hani . Can we call , expression of selfish rhizobia is the white small nodules...?
Not always Dr. Srivastava, sometimes brownish pink nodules of rhizobia also found inefficient in fixing nitrogen.
I never knew this. Thanks a lot for the incredible information on the selfish rhizobia
Dr. Bolo, that you cant say as defect in a single gene can impart the null mutation that is responsible for complete lack of nitrogen fixation capacity. Here actually the host plant enjoying benefit of nitrogen fixation product at the cost of nutrient or energy to rhizobia. If your rhizobia is not compatible to host plant you may get vulnerable to emerging selfish cheaters that extract benefit from the system without paying cost. Such parasitic cheaters may disrupt the symbiotic relationship. We experience this twice with Rhizobium meleloti.
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