Enhancement of antioxidant enzyme activities in rice callus by ascorbic acid under salinity stress

被引：15
|
作者：
Alhasnawi, A. N. [1 ,2 ]
Radziah, C. M. Z. Che [1 ]
Kadhimi, A. A. [1 ,3 ]
Isahak, A. [1 ]
Mohamad, A. [4 ]
Yusoff, W. M. W. [1 ]
机构：
[1] Univ Kebangsaan, Fac Sci & Technol, Ukm Bangim 43400, Selangor, Malaysia
[2] AL Muthanna Univ, Univ Presidency, Samawah 60001, Iraq
[3] Univ Baghdad, Minist Higher Educ, Baghdad 10070, Iraq
[4] Agensi Nuklear Malaysia, Bangi 43000, Malaysia
来源：
BIOLOGIA PLANTARUM | 2016年 / 60卷 / 04期
关键词：
catalase; embryogenic callus; peroxidase; proline; salt tolerance; superoxide dismutase; SALT STRESS; EMBRYOGENIC CALLUS; FREE PROLINE; NACL; PLANT; GROWTH; REGENERATION; TOLERANCE; GENOTYPE; PROTEIN;
D O I：
10.1007/s10535-016-0603-9
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Ascorbic acid (AsA) is naturally occurring compound with antioxidant activity and plays a pivotal role in plant cell adaptation to salinity stress. The objective of this work was to assess the influence of exogenous AsA on the embryogenic callus of indica rice (Oryza sativa L.) cv. MRQ74 cultivated under saline conditions. NaCl (200 mM) decreased callus fresh and dry masses, relative growth rate, and K+ and Ca+2 content, and increased Na+ content and Na+/K+ ratio. Application of AsA (0.5 or 1 mM) alleviated these effects of salinity. Activities of peroxidase, catalase, superoxide dismutase, as well as content of proline increased due to the NaCl treatment, and these parameters were mostly further increased by 0.5 mM AsA. Thus, AsA can increase callus tolerance to NaCl stress.
引用
收藏
页码：783 / 787
页数：5
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