Amelioration of salt induced toxicity in pearl millet by seed priming with silver nanoparticles (AgNPs): The oxidative damage, antioxidant enzymes and ions uptake are major determinants of salt tolerant capacity

被引：218

作者：

Khan, Imran ^{[1
]}

Raza, Muhammad Ali ^{[2
]}

Awan, Samrah Afzal ^{[1
]}

Shah, Ghulam Abbas ^{[3
]}

Rizwan, Muhammad ^{[4
]}

Ali, Basharat ^{[5
]}

Tariq, Rezwan ^{[6
]}

Hassan, Muhammad Jawad ^{[1
]}

Alyemeni, Mohammed Nasser ^{[8
]}

Brestic, Marian ^{[7
]}

Zhang, Xinquan ^{[1
]}

Ali, Shafaqat ^{[4
,9
]}

Huang, Linkai ^{[1
]}

机构：

[1] Sichuan Agr Univ, Anim Sci & Technol Coll, Dept Grassland Sci, Chengdu 611130, Peoples R China

[2] Sichuan Agr Univ, Coll Agron, Chengdu 611130, Peoples R China

[3] PMAS Arid Agr Univ, Dept Agron, Rawalpindi 46000, Pakistan

[4] Govt Coll Univ, Dept Environm Sci & Engn, Faisalabad 38000, Pakistan

[5] Univ Agr Faisalabad, Dept Agron, Faisalabad 38040, Pakistan

[6] Chinese Acad Agr Sci CAAS, Inst Crop Sci, Beijing 100081, Peoples R China

[7] Slovak Univ Agr, Fac Agrobiol & Food Resources, Dept Plant Physiol, Trieda A Hlinku 2, Nitra 94976, Slovakia

[8] King Saud Univ, Coll Sci, Bot & Microbiol Dept, Riyadh 11451, Saudi Arabia

[9] China Med Univ, Dept Biol Sci & Technol, Taichung 40402, Taiwan

来源：

PLANT PHYSIOLOGY AND BIOCHEMISTRY | 2020年 / 156卷

关键词：

Silver nanoparticles; Seed priming; Antioxidants; Plant growth; Salinity; GLUTATHIONE-REDUCTASE; SALINITY TOLERANCE; STRESS; DROUGHT; PLANTS; ZINC; AVAILABILITY; ALLEVIATION; PEROXIDASE; MECHANISMS;

D O I：

10.1016/j.plaphy.2020.09.018

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Abiotic stresses in plants reduce crop growth and productivity. Nanoparticles (NPs) are effectively involved in the physiochemical processes of crop plants, especially under the abiotic stresses; whereas, less information is available regarding the role of AgNPs in salt-stressed plants. Therefore, in the current study, we investigated the effects of seed priming with commercially available silver nanoparticles (AgNPs) (size range between 50 and 100 nm) on plant morphology, physiology, and antioxidant defence system of pearl millet (Pennisetum glaucum L.) under different concentrations of salt stress (0, 120 and 150 mM NaCl). The seed priming with AgNPs at different levels (0, 10, 20 and 30 mM) mitigated the adverse impacts of salt stress and improved plant growth and defence system. The results demonstrated that salt-stressed plants had restricted growth and a noticeable decline in fresh and dry weight. Salt stress enhanced the oxidative damage by excessive production of hydrogen peroxide (H2O2), malondialdehyde (MDA) contents in pearl millet leaves. However, seed priming with AgNPs significantly improved the plant height growth related attributes, relative water content, proline contents and ultimately fresh and dry weight at 20 mM AgNPs alone or with salt stress. The AgNPs reduced the oxidative damage by improving antioxidant enzyme activities in the pearl millet leaves under salt stress. Furthermore, sodium (Na+) and Na+/K+ ratio was decreased and potassium (K+) increased by NPs, and the interactive effects between salt and AgNPs significantly impacted the total phenolic and flavonoid content in pearl millet. It was concluded that seed priming with AgNPs could enhance salinity tolerance in crop plants by enhancing physiological and biochemical responses. This might boost global crop production in salt-degraded lands.

引用

页码：221 / 232

页数：12

共 72 条

[1] Chemically synthesized silver nanoparticles induced physio-chemical and chloroplast ultrastructural changes in broad bean seedlings [J].