Exogenous nitric oxide donor protects Artemisia annua from oxidative stress generated by boron and aluminium toxicity

被引：52
作者：
Aftab, Tariq [1 ,2 ]
Khan, M. Masroor A. [1 ]
Naeem, M. [1 ]
Idrees, Mohd [1 ]
Moinuddin [1 ]
Teixeira da Silva, Jaime A. [3 ,4 ]
Ram, M. [5 ]
机构：
[1] Aligarh Muslim Univ, Dept Bot, Plant Physiol Sect, Aligarh 202002, Uttar Pradesh, India
[2] Natl Bur Plant Genet Resources, Div Germplasm Evaluat, New Delhi 110012, India
[3] Kagawa Univ, Fac Agr, Miki, Kagawa 7610795, Japan
[4] Kagawa Univ, Grad Sch Agr, Miki, Kagawa 7610795, Japan
[5] Hamdard Univ, Dept Biotechnol, New Delhi 110062, India
来源：
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY | 2012年 / 80卷
关键词：
Aluminium; Antioxidant enzymes; Artemisia annua; Artemisinin; Boron; Nitric oxide; Photosynthesis; PROGRAMMED CELL-DEATH; NITRATE REDUCTASE; HIGHER-PLANTS; DIHYDROARTEMISINIC ACID; ANTIOXIDANT METABOLISM; SUPEROXIDE-DISMUTASE; LIPID-PEROXIDATION; HYDROGEN-PEROXIDE; CO2; ASSIMILATION; SALICYLIC-ACID;
D O I：
10.1016/j.ecoenv.2012.02.007
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Nitric oxide (NO) is an important signal molecule modulating the response of plants to environmental stress. Here we report the effects of boron (B) and aluminium (Al) contamination in soil, carried out with or without application of exogenous SNP (NO donor), on various plant processes in Artemisia annua, including changes in artemisinin content. The addition of B or Al to soil medium significantly reduced the yield and growth of plants and lowered the values of net photosynthetic rate, stomatal conductance, internal CO2 concentration and total chlorophyll content. The follow-up treatment of NO donor favoured growth and improved the photosynthetic efficiency in stressed as well as non-stressed plants. Artemisinin content was enhanced by 24.6% and 43.8% at 1 mmole of soil-applied B or Al. When SNP was applied at 2 mmole concentration together with either 1 mmole of B and/or Al, it further stimulated artemisinin biosynthesis compared to the control. Application of B + Al + SNP proved to be the best treatment combination for the artemisinin content in Artemisia annua leaves. (C) 2012 Elsevier Inc. All rights reserved.
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页码：60 / 68
页数：9
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