Ice-nucleation reporter

In concurrent research involving a longer-term study, the P. fluorescens Pf-5 strain was inoculated into soil used to grow lupine (Lupinus aihus) and barley Hordeum vulgare L.) over a several-week, period (17). It was shown that iron stress was greatest in the zone behind the root tips as compared to older root zones and in the bulk soil. Calibration of the ice-nucleation reporter activity... 

J. E. Loper and M. D. Henkels, Availability of iron to Pseudomonas fliiorescens in rhizosphere and bulk soil evaluated with an ice nucleation reporter gene. Appl. Environ. Microbiol. 63 99 (1997). 

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