Temporal and spatial order of events during the induction of cortical cell divisions in white clover by Rhizobium leguminosarum bv. trifolii inoculation or localized cytokinin addition.
作者： Ulrike Mathesius , Celine Charon , Barry G. Rolfe , Adam Kondorosi , Martin Crespi
DOI: 10.1094/MPMI.2000.13.6.617
关键词:
摘要: We examined the timing and location of several early root responses to Rhizobium leguminosarum bv. trifolii infection, compared with a localized addition cytokinin in white clover, study role signaling during nodule initiation. Induction ENOD40 expression by either rhizobia or was similar occurred progenitor cells inner cortex. Inoculation mature failed induce cortical cell divisions (ccd). Nitrate at levels repressing formation inhibited induction but not cytokinin. induced auxin, an auxin transport inhibitor, ethylene precursor. In contrast rhizobia, sufficient modulation flow, specific chalcone synthase genes, accumulation fluorescent compounds associated However, for auxin-induced GH3 gene initiation ccd. Our results suggest that cytokinin-mediated events parallel changes auxin-related support regulating propose model interactions ENOD40, flavonoids, nitrate nodulation.
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