期刊
PLANT SIGNALING & BEHAVIOR
卷 10, 期 4, 页码 -出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15592324.2015.1010924
关键词
arabidopsis thaliana; cyclin dependent kinase; giant cells; kip-related proteins; mitosis; meloidogyne incognita
The plant cell cycle inhibitor gene KRP6 has been investigated in roots infected by plant-parasitic root-knot nematodes (Meloidogyne spp.). Unexpectedly, KRP6 overexpressing lines revealed a distinct role for this specific KRP as an activator of the mitotic cell cycle. This function was confirmed in Arabidopsis thaliana suspension cultures ectopically expressing KRP6. A blockage in the mitotic exit was observed in cell suspensions and in giant cells resulted in the appearance of multi-nucleated cells. KRP6 expression during nematode infection and the similarity in phenotypes among KRP6 overexpressing cell cultures and giant-cell morphology strongly suggest that KRP6 is involved in multinucleation and acytokinesis occurring in giant-cells. Once again nematodes have been shown to manipulate the plant cell cycle machinery in order to promote gall establishment.
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