title: Treatment with spermidine protects chrysanthemum seedlings against salinity stress damage.
abstract: Salinity-stressed plants of salinity sensitive ('Qx096') and tolerant ('Qx097') chrysanthemum cultivar were treated with a range of concentrations of spermidine (Spd). Plant performance, as indicated by various parameters associated with growth, was improved by the treatment, as was the tissue content of soluble protein and proline. The extent of both Na(+) accumulation and K(+) loss was reduced. Activity levels of the stress-related enzymes SOD, POD, APX and CAT were significantly increased and the production of malondialdehyde (MDA) decreased. The suggestion was that treatment with 1.5 mM Spd would be an effective means alleviating salinity-stress induced injury through its positive effect on photosynthetic efficiency, reactive oxygen species scavenging ability and the control of ionic balance and osmotic potential. Its protective capacity was more apparent in 'Qx096' than in 'Qx097'.
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Naiyuan
authors.initials: N
authors.lastname: Zhang
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Xiaomeng
authors.initials: X
authors.lastname: Shi
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China. Electronic address: guanzhy@njau.edu.cn.
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Guan
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Shuang
authors.initials: S
authors.lastname: Zhao
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Zhang
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Sumei
authors.initials: S
authors.lastname: Chen
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Weiming
authors.initials: W
authors.lastname: Fang
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Fadi
authors.initials: F
authors.lastname: Chen
mesh_terms: D000975:Antioxidants / Q000378:metabolism; D031202:Chrysanthemum / Q000187:drug effects / Q000201:enzymology / Q000254:growth & development / Q000502:physiology*; D004573:Electrolytes / Q000378:metabolism; D008315:Malondialdehyde / Q000378:metabolism; D010788:Photosynthesis / Q000187:drug effects; D063245:Plant Development / Q000187:drug effects; D010940:Plant Proteins / Q000378:metabolism; D011188:Potassium / Q000378:metabolism; D011392:Proline / Q000378:metabolism; D054712:Salinity; D036226:Seedlings / Q000187:drug effects / Q000254:growth & development / Q000502:physiology*; D012964:Sodium / Q000378:metabolism; D012995:Solubility; D013095:Spermidine / Q000494:pharmacology*; D013312:Stress, Physiological / Q000187:drug effects*
chemical_list: D000975:Antioxidants; D004573:Electrolytes; D010940:Plant Proteins; D008315:Malondialdehyde; D011392:Proline; D012964:Sodium; D011188:Potassium; D013095:Spermidine
keywords: Antioxidant enzymes; Chrysanthemum; Polyamines; Salt stress; Spermidine