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Exogenous salicylic acid and hydrogen peroxide attenuate drought stress in rice

Plant, soil and environment, 2020-01, Vol.66 (1), p.7-13 [Peer Reviewed Journal]

2020. This work is published under https://www.agriculturejournals.cz/web/about/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 1214-1178 ;EISSN: 1805-9368 ;DOI: 10.17221/472/2019-PSE

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Title:
Exogenous salicylic acid and hydrogen peroxide attenuate drought stress in rice
Author: Sohag, Abdullah Al Mamun ; Tahjib-Ul-Arif, Md ; Brestič, Marián ; Afrin, Sonya ; Sakil, Md. Arif ; Hossain, Md. Tahmeed ; Hossain, Mohammad Anowar ; Hossain, Md. Afzal
Subjects: abiotic stress tolerance ; Antioxidants ; Aquatic plants ; Damage ; Drought ; Drought resistance ; Germination ; Hydrogen peroxide ; Hydroponics ; Lipid peroxidation ; Lipids ; Moisture content ; Peroxidation ; Photosynthesis ; Photosynthetic pigments ; phytohormone ; Pigments ; Proline ; Rice ; Salicylic acid ; Seedlings ; signaling molecule ; Soils ; Water content ; water stress
Is Part Of: Plant, soil and environment, 2020-01, Vol.66 (1), p.7-13
Description: Hydrogen peroxide (H2O2) and salicylic acid (SA) exhibit protective effects against a wide array of stresses. In this study, we investigated the relative efficacy of exogenous H2O2 and SA in conferring drought tolerance in rice (Oryza sativa L.). The experiment was repeated two times, firstly in a hydroponic system and secondly in soil. The results revealed that drought hampered germination indices, seedling growth, photosynthetic pigments, and water content, whereas increased proline content. It also triggered higher H2O2 production and consequently elevated lipid peroxidation, which is a particular indication of oxidative damage. However, exogenous H2O2 or SA treatment effectively alleviated oxidative damage in rice seedlings both in hydroponic and soil systems via upregulating antioxidant enzymes. Nevertheless, regulation of proline level and augmentation of plant-water status were crucial to confer drought tolerance. Exogenous H2O2 or SA also protected photosynthetic pigments from oxidative damage that might help to maintain normal photosynthesis under drought. Besides, 5 mmol/L H2O2 and 0.5 or 1 mmol/L SA showed similar effectiveness on mitigating drought stress. Finally, our findings suggest that exogenous H2O2 or SA could evenly be effectual in the amending growth of rice seedlings under drought conditions.
Publisher: Prague: Czech Academy of Agricultural Sciences (CAAS)
Language: English;Czech
Identifier: ISSN: 1214-1178
EISSN: 1805-9368
DOI: 10.17221/472/2019-PSE
Source: ProQuest Central
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Exogenous salicylic acid and hydrogen peroxide attenuate drought stress in rice

2020. This work is published under https://www.agriculturejournals.cz/web/about/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 1214-1178 ;EISSN: 1805-9368 ;DOI: 10.17221/472/2019-PSE

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