title: [Nitric oxide production in Malus hupehensis roots under waterlogging and the effects of exogenous NaNO3 on this production].
abstract: Taking two-year old Malus hupehensis as test material, this paper studied its root nitric oxide (NO) production under waterlogging, and the effects of exogenous NaNO3 on this production. Waterlogging for 3-9 days promoted the NO production significantly. Within the 12 days of waterlogging, the NO production, nitrite reductase (NR) and nitric oxide synthase (NOS) activities, and malondialchehyche (MDA) content in roots increased first, and decreased subsequently. Under waterlogging, the application of 10 mmol NaNO3 x L(-1) inhibited the increase of MDA content and NOS activity while improved the NR activity significantly. After applying NaNO3, the root NO production increased in the first three days, but decreased significantly after the 6th day.
authors.affiliation: College of Horticulture Science and Engineering, Taian 271018, Shandong, China. suijjjj@163.com
authors.forename: Jing
authors.initials: J
authors.lastname: Sui
authors.forename: Hong-Qiang
authors.initials: HQ
authors.lastname: Yang
authors.forename: Xin-Rong
authors.initials: XR
authors.lastname: Zhang
authors.forename: Qian-Qian
authors.initials: QQ
authors.lastname: Jiang
authors.forename: Kun
authors.initials: K
authors.lastname: Ran
authors.forename: Xiao-Li
authors.initials: XL
authors.lastname: Sun
authors.forename: Qiang
authors.initials: Q
authors.lastname: Li
mesh_terms: D017753:Ecosystem; D055868:Floods; D027845:Malus / Q000187:drug effects / Q000378:metabolism*; D009566:Nitrates / Q000494:pharmacology*; D009569:Nitric Oxide / Q000096:biosynthesis*; D018517:Plant Roots / Q000187:drug effects / Q000378:metabolism*
chemical_list: D009566:Nitrates; D009569:Nitric Oxide; C031618:sodium nitrate