Preharvest Abiotic Stress Affects the Nutritional Value of Lettuce
Lettuce (<i>Lactuca sativa</i> L.) is one of the most consumed leafy green vegetables in the world, and is a good source of important bioactive compounds. However, environmental stress factors, such as salinity or drought, cause physiological and biochemical changes in plants and influen...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-01-01
|
| Series: | Agronomy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4395/13/2/398 |
| _version_ | 1797622941886709760 |
|---|---|
| author | Sanja Ćavar Zeljković Nikola Štefelová Karel Hron Ivana Doležalová Petr Tarkowski |
| author_facet | Sanja Ćavar Zeljković Nikola Štefelová Karel Hron Ivana Doležalová Petr Tarkowski |
| author_sort | Sanja Ćavar Zeljković |
| collection | DOAJ |
| description | Lettuce (<i>Lactuca sativa</i> L.) is one of the most consumed leafy green vegetables in the world, and is a good source of important bioactive compounds. However, environmental stress factors, such as salinity or drought, cause physiological and biochemical changes in plants and influence the yields and levels of both primary and secondary metabolites, which drastically changes the nutritional value and quality of the crop. In the present work, six typical Czech cultivars/landraces of various lettuce morphotypes (Altenbursky, Dubacek, Kamenac, Jupiter, Prazan, and Robin) were grown under driven conditions and then analyzed for the content of sugars, fatty acids, amino acids, phenolics, and vitamins. Obtained data were subjected to compositional tables statistical analysis, which provided not only information on general trends in the changes in their nutritional value but also how these changes affected each particular variety. Overall, drought caused the largest relative increase in phenolic compounds and some amino acids. Conversely, drought caused overall the largest relative decrease in vitamin C, but also in fatty acids. In addition, salt stress caused a larger decrease in many metabolites, especially the amino acid arginine, while fatty acids were only slightly increased, together with vitamin E. In addition, the interpretation of data from statistical analysis showed that varieties Prazan and Altenbursky had the least changes in their chemical composition when subjected to drought stress. Again, var. Altenbursky showed the least variability in comparison to other varieties when subjected to salt stress. These findings confirm the fact that landraces and old cultivars do not change their chemical profiles significantly, as is the case for improved cultivars, and they emphasize the need for their cultivation when raising the productivity of staple food crops. |
| first_indexed | 2024-03-11T09:17:25Z |
| format | Article |
| id | doaj.art-eb23ac43509e498caf5d472736b27e03 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-11T09:17:25Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-eb23ac43509e498caf5d472736b27e032023-11-16T18:34:01ZengMDPI AGAgronomy2073-43952023-01-0113239810.3390/agronomy13020398Preharvest Abiotic Stress Affects the Nutritional Value of LettuceSanja Ćavar Zeljković0Nikola Štefelová1Karel Hron2Ivana Doležalová3Petr Tarkowski4Centre of the Region Haná for Biotechnological and Agricultural Research, Department of Genetic Resources for Vegetables, Medicinal and Special Plants, Crop Research Institute, Šlechtitelů 29, 78371 Olomouc, Czech RepublicCzech Advanced Technology and Research Institute, Palacky University, Šlechtitelů 27, 78371 Olomouc, Czech RepublicFaculty of Science, Palacky University, 17. listopadu 12, 77900 Olomouc, Czech RepublicCentre of the Region Haná for Biotechnological and Agricultural Research, Department of Genetic Resources for Vegetables, Medicinal and Special Plants, Crop Research Institute, Šlechtitelů 29, 78371 Olomouc, Czech RepublicCentre of the Region Haná for Biotechnological and Agricultural Research, Department of Genetic Resources for Vegetables, Medicinal and Special Plants, Crop Research Institute, Šlechtitelů 29, 78371 Olomouc, Czech RepublicLettuce (<i>Lactuca sativa</i> L.) is one of the most consumed leafy green vegetables in the world, and is a good source of important bioactive compounds. However, environmental stress factors, such as salinity or drought, cause physiological and biochemical changes in plants and influence the yields and levels of both primary and secondary metabolites, which drastically changes the nutritional value and quality of the crop. In the present work, six typical Czech cultivars/landraces of various lettuce morphotypes (Altenbursky, Dubacek, Kamenac, Jupiter, Prazan, and Robin) were grown under driven conditions and then analyzed for the content of sugars, fatty acids, amino acids, phenolics, and vitamins. Obtained data were subjected to compositional tables statistical analysis, which provided not only information on general trends in the changes in their nutritional value but also how these changes affected each particular variety. Overall, drought caused the largest relative increase in phenolic compounds and some amino acids. Conversely, drought caused overall the largest relative decrease in vitamin C, but also in fatty acids. In addition, salt stress caused a larger decrease in many metabolites, especially the amino acid arginine, while fatty acids were only slightly increased, together with vitamin E. In addition, the interpretation of data from statistical analysis showed that varieties Prazan and Altenbursky had the least changes in their chemical composition when subjected to drought stress. Again, var. Altenbursky showed the least variability in comparison to other varieties when subjected to salt stress. These findings confirm the fact that landraces and old cultivars do not change their chemical profiles significantly, as is the case for improved cultivars, and they emphasize the need for their cultivation when raising the productivity of staple food crops.https://www.mdpi.com/2073-4395/13/2/398lettucesalt stressdrought stressnutritional valuecompositional tables |
| spellingShingle | Sanja Ćavar Zeljković Nikola Štefelová Karel Hron Ivana Doležalová Petr Tarkowski Preharvest Abiotic Stress Affects the Nutritional Value of Lettuce Agronomy lettuce salt stress drought stress nutritional value compositional tables |
| title | Preharvest Abiotic Stress Affects the Nutritional Value of Lettuce |
| title_full | Preharvest Abiotic Stress Affects the Nutritional Value of Lettuce |
| title_fullStr | Preharvest Abiotic Stress Affects the Nutritional Value of Lettuce |
| title_full_unstemmed | Preharvest Abiotic Stress Affects the Nutritional Value of Lettuce |
| title_short | Preharvest Abiotic Stress Affects the Nutritional Value of Lettuce |
| title_sort | preharvest abiotic stress affects the nutritional value of lettuce |
| topic | lettuce salt stress drought stress nutritional value compositional tables |
| url | https://www.mdpi.com/2073-4395/13/2/398 |
| work_keys_str_mv | AT sanjacavarzeljkovic preharvestabioticstressaffectsthenutritionalvalueoflettuce AT nikolastefelova preharvestabioticstressaffectsthenutritionalvalueoflettuce AT karelhron preharvestabioticstressaffectsthenutritionalvalueoflettuce AT ivanadolezalova preharvestabioticstressaffectsthenutritionalvalueoflettuce AT petrtarkowski preharvestabioticstressaffectsthenutritionalvalueoflettuce |