Single and Combined Salinity and Heat Stresses Impact Yield and Dead Pericarp Priming Activity
In the face of climate change and the predicted increase in the frequency and severity of abiotic stresses (e.g., hot spell, salinity), we sought to investigate the effect of salinity (S), short episodes of high temperature (HS) and combination of salinity and high temperature (SHS), at the reproduc...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/10/8/1627 |
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| author | Bupur Swetha Jeevan R. Singiri Nurit Novoplansky Rohith Grandhi Jansirani Srinivasan Janardan Khadka Ivan Galis Gideon Grafi |
| author_facet | Bupur Swetha Jeevan R. Singiri Nurit Novoplansky Rohith Grandhi Jansirani Srinivasan Janardan Khadka Ivan Galis Gideon Grafi |
| author_sort | Bupur Swetha |
| collection | DOAJ |
| description | In the face of climate change and the predicted increase in the frequency and severity of abiotic stresses (e.g., hot spell, salinity), we sought to investigate the effect of salinity (S), short episodes of high temperature (HS) and combination of salinity and high temperature (SHS), at the reproductive phase, on yield with a special focus on the properties of dead pericarps of <i>Brassica juncea</i>. Three interval exposures to HS resulted in massive seed abortion, and seeds from salt-treated plants germinated poorly. Germination rate and final germination of <i>B. juncea</i> seeds were slightly reduced in the presence of salt and SHS pericarp extracts. All pericarp extracts completely inhibited seed germination of tomato and <i>Arabidopsis,</i> but removal of pericarp extracts almost fully restored seed germination. Heat and salinity profoundly affected the accumulation of phytohormones in dead pericarps. Combined stresses highly reduced IAA and ABA levels compared with salt, and enhanced the accumulation of GA1, but abolished the positive effect of salt on the accumulation of GA4, JA and SA. Interestingly, pericarp extracts displayed priming activity and significantly affected seedling performance in a manner dependent on the species and on the origin of the pericarp. While control pericarps improved and reduced the seedlings’ performance of autologous and heterologous species, respectively, pericarps from salt-treated plants were harmless or improved heterologous seedling performance. Thus, the strategy employed by the germinating seed for securing resources is set up, at least partly, by the mother plant in conjunction with the maternal environment whose components are stored in the dead maternal organs enclosing the embryo. |
| first_indexed | 2024-03-10T08:27:38Z |
| format | Article |
| id | doaj.art-bd8b03798e024ec19c7989368675086b |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-10T08:27:38Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-bd8b03798e024ec19c7989368675086b2023-11-22T09:19:10ZengMDPI AGPlants2223-77472021-08-01108162710.3390/plants10081627Single and Combined Salinity and Heat Stresses Impact Yield and Dead Pericarp Priming ActivityBupur Swetha0Jeevan R. Singiri1Nurit Novoplansky2Rohith Grandhi3Jansirani Srinivasan4Janardan Khadka5Ivan Galis6Gideon Grafi7French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion 84990, IsraelFrench Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion 84990, IsraelFrench Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion 84990, IsraelFrench Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion 84990, IsraelFrench Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion 84990, IsraelFrench Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion 84990, IsraelInstitute of Plant Science and Resources, Okayama University, Kurashiki 710-0046, JapanFrench Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion 84990, IsraelIn the face of climate change and the predicted increase in the frequency and severity of abiotic stresses (e.g., hot spell, salinity), we sought to investigate the effect of salinity (S), short episodes of high temperature (HS) and combination of salinity and high temperature (SHS), at the reproductive phase, on yield with a special focus on the properties of dead pericarps of <i>Brassica juncea</i>. Three interval exposures to HS resulted in massive seed abortion, and seeds from salt-treated plants germinated poorly. Germination rate and final germination of <i>B. juncea</i> seeds were slightly reduced in the presence of salt and SHS pericarp extracts. All pericarp extracts completely inhibited seed germination of tomato and <i>Arabidopsis,</i> but removal of pericarp extracts almost fully restored seed germination. Heat and salinity profoundly affected the accumulation of phytohormones in dead pericarps. Combined stresses highly reduced IAA and ABA levels compared with salt, and enhanced the accumulation of GA1, but abolished the positive effect of salt on the accumulation of GA4, JA and SA. Interestingly, pericarp extracts displayed priming activity and significantly affected seedling performance in a manner dependent on the species and on the origin of the pericarp. While control pericarps improved and reduced the seedlings’ performance of autologous and heterologous species, respectively, pericarps from salt-treated plants were harmless or improved heterologous seedling performance. Thus, the strategy employed by the germinating seed for securing resources is set up, at least partly, by the mother plant in conjunction with the maternal environment whose components are stored in the dead maternal organs enclosing the embryo.https://www.mdpi.com/2223-7747/10/8/1627dead pericarpssalinityshort episodes of high temperaturecombined stressesprimingreproductive phase |
| spellingShingle | Bupur Swetha Jeevan R. Singiri Nurit Novoplansky Rohith Grandhi Jansirani Srinivasan Janardan Khadka Ivan Galis Gideon Grafi Single and Combined Salinity and Heat Stresses Impact Yield and Dead Pericarp Priming Activity Plants dead pericarps salinity short episodes of high temperature combined stresses priming reproductive phase |
| title | Single and Combined Salinity and Heat Stresses Impact Yield and Dead Pericarp Priming Activity |
| title_full | Single and Combined Salinity and Heat Stresses Impact Yield and Dead Pericarp Priming Activity |
| title_fullStr | Single and Combined Salinity and Heat Stresses Impact Yield and Dead Pericarp Priming Activity |
| title_full_unstemmed | Single and Combined Salinity and Heat Stresses Impact Yield and Dead Pericarp Priming Activity |
| title_short | Single and Combined Salinity and Heat Stresses Impact Yield and Dead Pericarp Priming Activity |
| title_sort | single and combined salinity and heat stresses impact yield and dead pericarp priming activity |
| topic | dead pericarps salinity short episodes of high temperature combined stresses priming reproductive phase |
| url | https://www.mdpi.com/2223-7747/10/8/1627 |
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