Exogenous ascorbic acid mitigates accumulation of abscisic acid, proline and polyamine under osmotic stress in maize leaves

被引：38

作者：

Terzi, Rabiye ^{[1
]}

Kalaycioglu, Ebru ^{[1
]}

Demiralay, Mehmet ^{[1
,2
]}

Saglam, Aykut ^{[3
]}

Kadioglu, Asim ^{[1
]}

机构：

[1] Karadeniz Tech Univ, Dept Biol, Fac Sci, TR-61080 Trabzon, Turkey

[2] Artvin Coruh Univ, Dept Biol, Fac Sci & Letters, TR-08000 Artvin, Turkey

[3] Karadeniz Tech Univ, Dept Mol Biol & Genet, Fac Sci, TR-61080 Trabzon, Turkey

来源：

ACTA PHYSIOLOGIAE PLANTARUM | 2015年 / 37卷 / 03期

基金：

美国国家科学基金会;

关键词：

Ascorbic acid; Abscisic acid; Maize; Proline; Polyamine metabolism; Osmotic stress; WATER-DEFICIT STRESS; OXIDATIVE STRESS; DROUGHT STRESS; SALT STRESS; FOLIAR APPLICATION; PROTECTIVE ROLE; ABIOTIC STRESS; RESPONSES; PLANTS; ARABIDOPSIS;

D O I：

10.1007/s11738-015-1792-0

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The effects of osmotic stress (polyethylene glycol, PEG 6000) and exogenous ascorbic acid (ASC) on abscisic acid (ABA), some osmolytes (proline and polyamine), and gene expression of polyamine metabolic enzymes arginine decarboxylase (ADC), S-adenosylmethionine decarboxylase (SAMDC) and polyamine oxidase (PAO1) were assessed in the leaves of Zea mays L. seedlings. ASC (0.1 mM) was hydroponically applied to detached maize seedlings. ASC application scavenged endogenous hydrogen peroxide level and ameliorated leaf water status and stomatal conductance under osmotic stress. Lipid peroxidation, ABA and osmolyte accumulation were mitigated by ASC treatment. For osmolytes, the alleviation of polyamine accumulation was more obvious than that of the proline. Therefore, gene expressions of polyamine metabolic enzymes were investigated. Compared to control seedlings, down-regulation of SAMDC and ADC gene expressions were determined in ASC ? PEG-applied seedlings while PAO1 gene expression increased. These results indicated that exogenous ASC influenced polyamine metabolism. ASC application under the osmotic stress ameliorated osmotic solute levels and ABA concentration in maize.

引用

页码：1 / 9

页数：9

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