Photosynthetic Efficiency in Flag Leaves and Ears of Winter Wheat during Fusarium Head Blight Infection
Fusarium head blight (FHB) is one of the most serious fungal diseases of wheat (<i>Triticum aestivum</i> L.). It causes major reduction of grain yield and quality, while the safety of wheat products is at risk due to mycotoxin contaminations. To contribute to a better understanding of me...
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MDPI AG
2021-11-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/11/12/2415 |
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| author | Zorana Katanić Selma Mlinarić Nataša Katanić Josipa Ćosić Valentina Španić |
| author_facet | Zorana Katanić Selma Mlinarić Nataša Katanić Josipa Ćosić Valentina Španić |
| author_sort | Zorana Katanić |
| collection | DOAJ |
| description | Fusarium head blight (FHB) is one of the most serious fungal diseases of wheat (<i>Triticum aestivum</i> L.). It causes major reduction of grain yield and quality, while the safety of wheat products is at risk due to mycotoxin contaminations. To contribute to a better understanding of mechanisms governing more efficient defense strategies against FHB, an evaluation of photosynthetic efficiency was performed during different phases of infection, i.e., before visual symptoms occur, at the onset and after the development of disease symptoms. Six different winter wheat varieties were artificially inoculated with the most significant causal agents of FHB (<i>Fusarium graminearum</i> and <i>F. culmorum</i>) at two different locations. Photosynthetic efficiency was assessed in flag leaves and ears of inoculated and untreated (control) plants based on measurements of chlorophyll <i>a</i> fluorescence rise kinetics and the calculation of JIP-test parameters. Obtained results indicate that the response of wheat to <i>Fusarium</i> infection includes changes in photosynthetic efficiency which can encompass alternating reductions and increases in photosynthetic performance during the course of the infection in both flag leaves and ears. FHB-induced photosynthetic adjustments were shown to be somewhat variety-specific, but location was shown to be a more significant factor in modulating the response of wheat to <i>Fusarium</i> infection. Changes in chlorophyll <i>a</i> fluorescence rise kinetics could be detected prior to visible symptoms of the disease. Therefore, this method could be applied for the early detection of <i>Fusarium</i> infection, particularly the analysis of L-band appearance, which showed a similar response in all inoculated plants, regardless of variety or location. |
| first_indexed | 2024-03-10T04:41:13Z |
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| language | English |
| last_indexed | 2024-03-10T04:41:13Z |
| publishDate | 2021-11-01 |
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| series | Agronomy |
| spelling | doaj.art-171fb3dd678b473aa44131b9396938142023-11-23T03:21:30ZengMDPI AGAgronomy2073-43952021-11-011112241510.3390/agronomy11122415Photosynthetic Efficiency in Flag Leaves and Ears of Winter Wheat during Fusarium Head Blight InfectionZorana Katanić0Selma Mlinarić1Nataša Katanić2Josipa Ćosić3Valentina Španić4Department of Biology, University of Osijek, Cara Hadrijana 8A, 31000 Osijek, CroatiaDepartment of Biology, University of Osijek, Cara Hadrijana 8A, 31000 Osijek, CroatiaDepartment of Biology, University of Osijek, Cara Hadrijana 8A, 31000 Osijek, CroatiaAgricultural Institute Osijek, Južno Predgrađe 17, 31000 Osijek, CroatiaAgricultural Institute Osijek, Južno Predgrađe 17, 31000 Osijek, CroatiaFusarium head blight (FHB) is one of the most serious fungal diseases of wheat (<i>Triticum aestivum</i> L.). It causes major reduction of grain yield and quality, while the safety of wheat products is at risk due to mycotoxin contaminations. To contribute to a better understanding of mechanisms governing more efficient defense strategies against FHB, an evaluation of photosynthetic efficiency was performed during different phases of infection, i.e., before visual symptoms occur, at the onset and after the development of disease symptoms. Six different winter wheat varieties were artificially inoculated with the most significant causal agents of FHB (<i>Fusarium graminearum</i> and <i>F. culmorum</i>) at two different locations. Photosynthetic efficiency was assessed in flag leaves and ears of inoculated and untreated (control) plants based on measurements of chlorophyll <i>a</i> fluorescence rise kinetics and the calculation of JIP-test parameters. Obtained results indicate that the response of wheat to <i>Fusarium</i> infection includes changes in photosynthetic efficiency which can encompass alternating reductions and increases in photosynthetic performance during the course of the infection in both flag leaves and ears. FHB-induced photosynthetic adjustments were shown to be somewhat variety-specific, but location was shown to be a more significant factor in modulating the response of wheat to <i>Fusarium</i> infection. Changes in chlorophyll <i>a</i> fluorescence rise kinetics could be detected prior to visible symptoms of the disease. Therefore, this method could be applied for the early detection of <i>Fusarium</i> infection, particularly the analysis of L-band appearance, which showed a similar response in all inoculated plants, regardless of variety or location.https://www.mdpi.com/2073-4395/11/12/2415chlorophyll <i>a</i> fluorescence<i>Fusarium</i> spp.OJIP kineticsphotosynthesis |
| spellingShingle | Zorana Katanić Selma Mlinarić Nataša Katanić Josipa Ćosić Valentina Španić Photosynthetic Efficiency in Flag Leaves and Ears of Winter Wheat during Fusarium Head Blight Infection Agronomy chlorophyll <i>a</i> fluorescence <i>Fusarium</i> spp. OJIP kinetics photosynthesis |
| title | Photosynthetic Efficiency in Flag Leaves and Ears of Winter Wheat during Fusarium Head Blight Infection |
| title_full | Photosynthetic Efficiency in Flag Leaves and Ears of Winter Wheat during Fusarium Head Blight Infection |
| title_fullStr | Photosynthetic Efficiency in Flag Leaves and Ears of Winter Wheat during Fusarium Head Blight Infection |
| title_full_unstemmed | Photosynthetic Efficiency in Flag Leaves and Ears of Winter Wheat during Fusarium Head Blight Infection |
| title_short | Photosynthetic Efficiency in Flag Leaves and Ears of Winter Wheat during Fusarium Head Blight Infection |
| title_sort | photosynthetic efficiency in flag leaves and ears of winter wheat during fusarium head blight infection |
| topic | chlorophyll <i>a</i> fluorescence <i>Fusarium</i> spp. OJIP kinetics photosynthesis |
| url | https://www.mdpi.com/2073-4395/11/12/2415 |
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