Influence of Light Intensity on Tobacco Responses to Drought Stress
The influence of high irradiance, drought stress and their cross-talk were explored in tobacco plants (Nicotiana tobaccum) grown under low light (250 ?mol m-2 s-1) irradiance (LL) and high (1600 ?mol m-2 s-1) irradiance (HL) then exposed to water deficient condition for 7 or 14 days. The detached le...
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Sulaimani Polytechnic University
2021-10-01
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| Series: | Kurdistan Journal of Applied Research |
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| Online Access: | https://kjar.spu.edu.iq/index.php/kjar/article/view/593 |
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| author | Brwa Rasool |
| author_facet | Brwa Rasool |
| author_sort | Brwa Rasool |
| collection | DOAJ |
| description | The influence of high irradiance, drought stress and their cross-talk were explored in tobacco plants (Nicotiana tobaccum) grown under low light (250 ?mol m-2 s-1) irradiance (LL) and high (1600 ?mol m-2 s-1) irradiance (HL) then exposed to water deficient condition for 7 or 14 days. The detached leaves of HL-treated plants showed less water loss compared to LL plants. The HL-treated and 7 days drought-stressed plants had higher fresh and dry weights, as well as water content than the LL and drought-stressed leaves. The survival rate in 21 days drought-stressed plants after 3 days of re-watering was 50% in HL-grown and 0% in LL-grown plants.
A transcriptome profiling analysis of the tobacco responses to light intensity highlights the increased abundance of a large group of drought-related transcripts including DROUGHT-RESPONSIVE ELEMENT BINDING FACTORS (DREBs), C-REPEAT/DROUGHT-RESPONSIVE BINDING FACTOR 1 (CBF1), GLYCINE-RICH RNA BINDING PROTEINS (GRPs), WRKY33 and MYCs transcription factors, as well as zeaxanthin epoxidase, which play as a regulator of plant responses to water deficient condition.
These findings identify light-dependent changes in the cell redox state that limit water loss and enhance plant responses to drought stress.
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| format | Article |
| id | doaj-art-4a366fc208344eca87005373f7858f18 |
| institution | Kabale University |
| issn | 2411-7684 2411-7706 |
| language | English |
| publishDate | 2021-10-01 |
| publisher | Sulaimani Polytechnic University |
| record_format | Article |
| series | Kurdistan Journal of Applied Research |
| spelling | doaj-art-4a366fc208344eca87005373f7858f182025-02-09T20:59:50ZengSulaimani Polytechnic UniversityKurdistan Journal of Applied Research2411-76842411-77062021-10-016210.24017/science.2021.2.2593Influence of Light Intensity on Tobacco Responses to Drought StressBrwa Rasool0Agricultural Project Management Department, Halabja Technical College of Applied Science, Sulaimani Polytechnic UniversityThe influence of high irradiance, drought stress and their cross-talk were explored in tobacco plants (Nicotiana tobaccum) grown under low light (250 ?mol m-2 s-1) irradiance (LL) and high (1600 ?mol m-2 s-1) irradiance (HL) then exposed to water deficient condition for 7 or 14 days. The detached leaves of HL-treated plants showed less water loss compared to LL plants. The HL-treated and 7 days drought-stressed plants had higher fresh and dry weights, as well as water content than the LL and drought-stressed leaves. The survival rate in 21 days drought-stressed plants after 3 days of re-watering was 50% in HL-grown and 0% in LL-grown plants. A transcriptome profiling analysis of the tobacco responses to light intensity highlights the increased abundance of a large group of drought-related transcripts including DROUGHT-RESPONSIVE ELEMENT BINDING FACTORS (DREBs), C-REPEAT/DROUGHT-RESPONSIVE BINDING FACTOR 1 (CBF1), GLYCINE-RICH RNA BINDING PROTEINS (GRPs), WRKY33 and MYCs transcription factors, as well as zeaxanthin epoxidase, which play as a regulator of plant responses to water deficient condition. These findings identify light-dependent changes in the cell redox state that limit water loss and enhance plant responses to drought stress. https://kjar.spu.edu.iq/index.php/kjar/article/view/593High light stress, drought stress, light memory, cross-tolerance, redox regulation |
| spellingShingle | Brwa Rasool Influence of Light Intensity on Tobacco Responses to Drought Stress Kurdistan Journal of Applied Research High light stress, drought stress, light memory, cross-tolerance, redox regulation |
| title | Influence of Light Intensity on Tobacco Responses to Drought Stress |
| title_full | Influence of Light Intensity on Tobacco Responses to Drought Stress |
| title_fullStr | Influence of Light Intensity on Tobacco Responses to Drought Stress |
| title_full_unstemmed | Influence of Light Intensity on Tobacco Responses to Drought Stress |
| title_short | Influence of Light Intensity on Tobacco Responses to Drought Stress |
| title_sort | influence of light intensity on tobacco responses to drought stress |
| topic | High light stress, drought stress, light memory, cross-tolerance, redox regulation |
| url | https://kjar.spu.edu.iq/index.php/kjar/article/view/593 |
| work_keys_str_mv | AT brwarasool influenceoflightintensityontobaccoresponsestodroughtstress |