Role for hetC in the Transition to a Nondividing State during Heterocyst Differentiation in Anabaena sp.

AUTOR(ES)

Xu, Xudong

FONTE

American Society for Microbiology

RESUMO

Nitrogen-deprived filaments of wild-type or hetC Anabaena sp. produce respectively, at semiregular intervals, heterocysts and weakly fluorescent cells. Unlike heterocysts, the latter cells can divide and elongate, producing a pattern of spaced series of small cells. Because a hetR::gfp fusion is expressed most strongly in the small cells, we propose that these small cells represent a very early stage of heterocyst differentiation. hetC::gfp is expressed most strongly in proheterocysts and heterocysts.

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