Nitric Oxide Modulates Salt Stress Tolerance in Lettuce
Crops are constantly threatened by salinity. Nitric oxide (NO) is an attenuating agent for salt stress; however, the specific roles of NO in gas exchange and lettuce production are not well established. The objective of this study was to evaluate the application of different concentrations of sodium...
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| Format: | Article |
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MDPI AG
2023-10-01
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| Series: | Stresses |
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| Online Access: | https://www.mdpi.com/2673-7140/3/4/48 |
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| author | Isabelly Cristina da Silva Marques Dayane Mércia Ribeiro Silva Geane Lourenço Bispo Francisco de Assis de Oliveira Elizabeth Orika Ono João Domingos Rodrigues |
| author_facet | Isabelly Cristina da Silva Marques Dayane Mércia Ribeiro Silva Geane Lourenço Bispo Francisco de Assis de Oliveira Elizabeth Orika Ono João Domingos Rodrigues |
| author_sort | Isabelly Cristina da Silva Marques |
| collection | DOAJ |
| description | Crops are constantly threatened by salinity. Nitric oxide (NO) is an attenuating agent for salt stress; however, the specific roles of NO in gas exchange and lettuce production are not well established. The objective of this study was to evaluate the application of different concentrations of sodium nitroprusside (SNP) as an agent to mitigate salt stress in lettuce plants. Lettuce seedlings in pots were subjected to irrigation without and with saline water (0.2 and 3.5 dS m<sup>−1</sup>) and applications of different concentrations (0, 50, 100, 150, and 200 µM) of SNP, a NO donor. Saline stress negatively affected lettuce development with a reduction of 29.5% in leaf area, 6.3% in relative water content in the leaf, 17.2% in stem diameter, and 10.7% in dry matter mass in the control, but the application of SNP mitigated the deleterious effects of salt stress. Concentrations between 100 and 150 µM of SNP improved the photosynthetic metabolism of lettuce under salinity, with an increase of 46.7% in CO<sub>2</sub> assimilation and 42.3% in fresh matter mass. Pearson’s correlation showed that fresh matter correlated positively with CO<sub>2</sub> assimilation. Therefore, SNP can be used to mitigate salt stress in lettuce. |
| first_indexed | 2024-03-08T20:21:13Z |
| format | Article |
| id | doaj.art-9e9d445ac5ca42d4b6cf532e857728c5 |
| institution | Directory Open Access Journal |
| issn | 2673-7140 |
| language | English |
| last_indexed | 2024-03-08T20:21:13Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Stresses |
| spelling | doaj.art-9e9d445ac5ca42d4b6cf532e857728c52023-12-22T14:43:22ZengMDPI AGStresses2673-71402023-10-013470171610.3390/stresses3040048Nitric Oxide Modulates Salt Stress Tolerance in LettuceIsabelly Cristina da Silva Marques0Dayane Mércia Ribeiro Silva1Geane Lourenço Bispo2Francisco de Assis de Oliveira3Elizabeth Orika Ono4João Domingos Rodrigues5Department of Horticulture, School of Agricultural Sciences, São Paulo State University (Unesp), Botucatu 18610-034, SP, BrazilPostdoctoral at the Graduate Program in Agriculture and Environment, Alagoas Federal University (UFAL), Arapiraca 57309-005, AL, BrazilDepartment of Horticulture, School of Agricultural Sciences, São Paulo State University (Unesp), Botucatu 18610-034, SP, BrazilDepartment of Agronomic and Forestry Sciences, Federal Rural University of the Semiarid Region (Ufersa), Mossoró 59625-900, RN, BrazilDepartment of Botany, Institute of Biosciences, São Paulo State University (Unesp), Botucatu 18618-000, SP, BrazilDepartment of Botany, Institute of Biosciences, São Paulo State University (Unesp), Botucatu 18618-000, SP, BrazilCrops are constantly threatened by salinity. Nitric oxide (NO) is an attenuating agent for salt stress; however, the specific roles of NO in gas exchange and lettuce production are not well established. The objective of this study was to evaluate the application of different concentrations of sodium nitroprusside (SNP) as an agent to mitigate salt stress in lettuce plants. Lettuce seedlings in pots were subjected to irrigation without and with saline water (0.2 and 3.5 dS m<sup>−1</sup>) and applications of different concentrations (0, 50, 100, 150, and 200 µM) of SNP, a NO donor. Saline stress negatively affected lettuce development with a reduction of 29.5% in leaf area, 6.3% in relative water content in the leaf, 17.2% in stem diameter, and 10.7% in dry matter mass in the control, but the application of SNP mitigated the deleterious effects of salt stress. Concentrations between 100 and 150 µM of SNP improved the photosynthetic metabolism of lettuce under salinity, with an increase of 46.7% in CO<sub>2</sub> assimilation and 42.3% in fresh matter mass. Pearson’s correlation showed that fresh matter correlated positively with CO<sub>2</sub> assimilation. Therefore, SNP can be used to mitigate salt stress in lettuce.https://www.mdpi.com/2673-7140/3/4/48gas exchange<i>Lactuca sativa</i> L.salinitysodium nitroprussideyield |
| spellingShingle | Isabelly Cristina da Silva Marques Dayane Mércia Ribeiro Silva Geane Lourenço Bispo Francisco de Assis de Oliveira Elizabeth Orika Ono João Domingos Rodrigues Nitric Oxide Modulates Salt Stress Tolerance in Lettuce Stresses gas exchange <i>Lactuca sativa</i> L. salinity sodium nitroprusside yield |
| title | Nitric Oxide Modulates Salt Stress Tolerance in Lettuce |
| title_full | Nitric Oxide Modulates Salt Stress Tolerance in Lettuce |
| title_fullStr | Nitric Oxide Modulates Salt Stress Tolerance in Lettuce |
| title_full_unstemmed | Nitric Oxide Modulates Salt Stress Tolerance in Lettuce |
| title_short | Nitric Oxide Modulates Salt Stress Tolerance in Lettuce |
| title_sort | nitric oxide modulates salt stress tolerance in lettuce |
| topic | gas exchange <i>Lactuca sativa</i> L. salinity sodium nitroprusside yield |
| url | https://www.mdpi.com/2673-7140/3/4/48 |
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