Effects of sodium nitroprusside (SNP) pretreatment on UV-B stress tolerance in lettuce (Lactuca sativa L.) seedlings

Environmental Science and Pollution Research International
Aslıhan EsringuAyse Aydan Kara

Abstract

Ultraviolet-B (UV-B) radiation is one of the most important abiotic stress factors that could influence plant growth, development, and productivity. Nitric oxide (NO) is an important plant growth regulator involved in a wide variety of physiological processes. In the present study, the possibility of enhancing UV-B stress tolerance of lettuce seedlings by the exogenous application of sodium nitroprusside (SNP) was investigated. UV-B radiation increased the activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), peroxidase (POD) and total phenolic concentrations, antioxidant capacity, and expression of phenylalanine ammonia lyase (PAL) gene in seedlings, but the combination of SNP pretreatment and UV-B enhanced antioxidant enzyme activities, total phenolic concentrations, antioxidant capacity, and PAL gene expression even more. Moreover, UV-B radiation significantly inhibited chlorophylls, carotenoid, gibberellic acid (GA), and indole-3-acetic acid (IAA) contents and increased the contents of abscisic acid (ABA), salicylic acid (SA), malondialdehyde (MDA), hydrogen peroxide (H2O2), and superoxide radical (O2•(-)) in lettuce seedlings. When SNP pretreatment was combined with the UV-B radiation, we ob...Continue Reading

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Citations

Jan 26, 2016·Environmental Science & Technology·Simon C ParkinsonAbdulrahman H Almasoud
May 6, 2016·Frontiers in Plant Science·Dmytro I LytvynYaroslav B Blume
Jul 13, 2016·Journal of Experimental Botany·Lucas VanhaelewynFilip Vandenbussche
Jan 11, 2017·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Ozkan AksakalNevzat Esim
Apr 25, 2020·Plants·Kamilla Pacheco GovêaSandro Barbosa
Dec 31, 2020·Plant, Cell & Environment·Muhammad IdrisMoritoshi Iino
May 23, 2021·Journal of Photochemistry and Photobiology. B, Biology·Ritesh Kumar RaipuriaMeeta Jain

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