Interactions between nitric oxide, gibberellic acid, and phosphorus regulate primary root growth in Arabidopsis

Interactions between nitric oxide, gibberellic acid, and phosphorus regulate primary root growth in Arabidopsis

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Nitric oxide (NO), gibberellic acid (GA), laguna 3hp dust collector and phosphorus (P) have been reported to regulate primary root (PR) growth, but interactions between them in the growth of Arabidopsis PR remain unknown.This work confirmed that low P availability significantly inhibited PR growth and that NO arrested PR growth in either high P or low P conditions.Moreover, NO counteracted the stimulatory effects of GA on PR growth canine spectra kc 3 intranasal single dose under low P conditions.Finally, the dependence of low P and NO inhibition of PR growth on the DELLA-SLY pathway revealed that NO stabilized a major DELLA protein.

We therefore conclude that antagonistic interactions between NO and GA regulate PR growth under both the high and low P conditions, and a DELLA-SLY module is the node where NO, GA, and P pathways converge and interact.