Nitric Oxide Mediates Molybdenum-Induced Antioxidant Defense in Wheat under Drought Stress.

ABSTRACT: Molybdenum (Mo) has been reported to alleviate drought stress by enhancing antioxidant defense in plants, but the underlying mechanism remains unclear. Here, we hypothesized that Mo mediates nitric oxide (NO)-induced antioxidant defense through Mo-enzymes, particularly by nitrate reductase (NR) in wheat under drought stress. The 30-day-old wheat seedlings cultivated in -Mo (0 μM Mo) and +Mo (1 μM Mo) Hoagland solutions were detached and then pretreated with Mo-enzyme inhibitors, NO scavengers, NO donors or their combinations according to demands of complementary experiment under 10% polyethylene glycol 6000 (PEG)-stimulated drought stress (PSD). Mo supplementation increased the activities and transcripts of antioxidant enzymes, decreased H₂O₂ and MDA contents, and ele

SUBMITTER: Wu S 

PROVIDER: S-EPMC5481953 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature