Changes in Photo-Protective Energy Dissipation of Photosystem II in Response to Beneficial Bacteria Consortium in Durum Wheat under Drought and Salinity Stresses
The present research aimed at evaluating the harmless dissipation of excess excitation energy by durum wheat (<i>Triticum durum</i> Desf.) leaves in response to the application of a bacterial consortium consisting of four plant growth-promoting bacteria (PGPB). Three pot experiments were...
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MDPI AG
2020-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/15/5031 |
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| author | Mohammad Yaghoubi Khanghahi Sabrina Strafella Carmine Crecchio |
| author_facet | Mohammad Yaghoubi Khanghahi Sabrina Strafella Carmine Crecchio |
| author_sort | Mohammad Yaghoubi Khanghahi |
| collection | DOAJ |
| description | The present research aimed at evaluating the harmless dissipation of excess excitation energy by durum wheat (<i>Triticum durum</i> Desf.) leaves in response to the application of a bacterial consortium consisting of four plant growth-promoting bacteria (PGPB). Three pot experiments were carried out under non-stress, drought (at 40% field capacity), and salinity (150 mM NaCl) conditions. The results showed that drought and salinity affected photo-protective energy dissipation of photosystem II (PSII) increasing the rate of non-photochemical chlorophyll fluorescence quenching (NPQ (non-photochemical quenching) and qCN (complete non-photochemical quenching)), as well as decreasing the total quenching of chlorophyll fluorescence (qTQ), total quenching of variable chlorophyll fluorescence (qTV) and the ratio of the quantum yield of actual PSII photochemistry, in light-adapted state to the quantum yield of the constitutive non-regulatory NPQ (PQ rate). Our results also indicated that the PGPB inoculants can mitigate the adverse impacts of stresses on leaves, especially the saline one, in comparison with the non-fertilized (control) treatment, by increasing the fraction of light absorbed by the PSII antenna, PQ ratio, qTQ, and qTV. In the light of findings, our beneficial bacterial strains showed the potential in reducing reliance on traditional chemical fertilizers, in particular in saline soil, by improving the grain yield and regulating the amount of excitation energy. |
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| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T18:18:16Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-cdb2c2e9fada457d8d5c643c5bbd48532023-11-20T07:32:26ZengMDPI AGApplied Sciences2076-34172020-07-011015503110.3390/app10155031Changes in Photo-Protective Energy Dissipation of Photosystem II in Response to Beneficial Bacteria Consortium in Durum Wheat under Drought and Salinity StressesMohammad Yaghoubi Khanghahi0Sabrina Strafella1Carmine Crecchio2Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, Via Amendola 165/A, 70126 Bari, ItalyDepartment of Soil, Plant and Food Sciences, University of Bari Aldo Moro, Via Amendola 165/A, 70126 Bari, ItalyDepartment of Soil, Plant and Food Sciences, University of Bari Aldo Moro, Via Amendola 165/A, 70126 Bari, ItalyThe present research aimed at evaluating the harmless dissipation of excess excitation energy by durum wheat (<i>Triticum durum</i> Desf.) leaves in response to the application of a bacterial consortium consisting of four plant growth-promoting bacteria (PGPB). Three pot experiments were carried out under non-stress, drought (at 40% field capacity), and salinity (150 mM NaCl) conditions. The results showed that drought and salinity affected photo-protective energy dissipation of photosystem II (PSII) increasing the rate of non-photochemical chlorophyll fluorescence quenching (NPQ (non-photochemical quenching) and qCN (complete non-photochemical quenching)), as well as decreasing the total quenching of chlorophyll fluorescence (qTQ), total quenching of variable chlorophyll fluorescence (qTV) and the ratio of the quantum yield of actual PSII photochemistry, in light-adapted state to the quantum yield of the constitutive non-regulatory NPQ (PQ rate). Our results also indicated that the PGPB inoculants can mitigate the adverse impacts of stresses on leaves, especially the saline one, in comparison with the non-fertilized (control) treatment, by increasing the fraction of light absorbed by the PSII antenna, PQ ratio, qTQ, and qTV. In the light of findings, our beneficial bacterial strains showed the potential in reducing reliance on traditional chemical fertilizers, in particular in saline soil, by improving the grain yield and regulating the amount of excitation energy.https://www.mdpi.com/2076-3417/10/15/5031chemical fertilizationnon-photochemical chlorophyll fluorescence quenchingphotosynthetic energy partitioningplant growth-promoting bacteriaPSII photochemistry |
| spellingShingle | Mohammad Yaghoubi Khanghahi Sabrina Strafella Carmine Crecchio Changes in Photo-Protective Energy Dissipation of Photosystem II in Response to Beneficial Bacteria Consortium in Durum Wheat under Drought and Salinity Stresses Applied Sciences chemical fertilization non-photochemical chlorophyll fluorescence quenching photosynthetic energy partitioning plant growth-promoting bacteria PSII photochemistry |
| title | Changes in Photo-Protective Energy Dissipation of Photosystem II in Response to Beneficial Bacteria Consortium in Durum Wheat under Drought and Salinity Stresses |
| title_full | Changes in Photo-Protective Energy Dissipation of Photosystem II in Response to Beneficial Bacteria Consortium in Durum Wheat under Drought and Salinity Stresses |
| title_fullStr | Changes in Photo-Protective Energy Dissipation of Photosystem II in Response to Beneficial Bacteria Consortium in Durum Wheat under Drought and Salinity Stresses |
| title_full_unstemmed | Changes in Photo-Protective Energy Dissipation of Photosystem II in Response to Beneficial Bacteria Consortium in Durum Wheat under Drought and Salinity Stresses |
| title_short | Changes in Photo-Protective Energy Dissipation of Photosystem II in Response to Beneficial Bacteria Consortium in Durum Wheat under Drought and Salinity Stresses |
| title_sort | changes in photo protective energy dissipation of photosystem ii in response to beneficial bacteria consortium in durum wheat under drought and salinity stresses |
| topic | chemical fertilization non-photochemical chlorophyll fluorescence quenching photosynthetic energy partitioning plant growth-promoting bacteria PSII photochemistry |
| url | https://www.mdpi.com/2076-3417/10/15/5031 |
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