Enhancement of developmentally regulated daidzein secretion from soybean roots in field conditions as compared with hydroponic culture

Abstract

Analyses of metabolite secretions by field-grown plants remain scarce. We analyzed daidzein secretion by field-grown soybean. Daidzein secretion was higher during early vegetative stages than reproductive stages, a trend that was also seen for hydroponically grown soybean. Daidzein secretion was up to 10 000-fold higher under field conditions than hydroponic conditions, leading to a more accurate simulation of rhizosphere daidzein content.

Keywords: daidzein; rhizosphere; simulation; soybean.