Physiological and molecular insights into the resilience of biological nitrogen fixation to applied nitrogen in <i>Saccharum spontaneum</i>, wild progenitor of sugarcane.

As with NR, GS activity also showed an increasing trend in leaf and root tissues though the N-induced enzyme induction was not as pronounced as in NR, except for the G3 leaf tissue ( Figure 6B ). 3.4 Nitrogen supply increased auxin, gibberellin and cytokinin content and nitrate reductase activity remarkably, but not so for abscisic acid and glutamine synthetase Inorganic N application had a remarkable effect on endogenous hormones in both G152 and G3 accessions ( Table 2 ).

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