Effect of cryptochrome 1 deficiency and spectral composition of light on photosynthetic processes in A. thaliana under high-intensity light exposure
The role of cryptochrome 1 in photosynthetic processes and pro-/antioxidant balance in the Arabidopsis thaliana plants was studied. Wild type (WT) and hy4 mutant deficient in cryptochrome 1 grown for 20 d under red (RL, 660 nm) and blue (BL, 460 nm) light at an RL:BL = 4:1 ratio were kept for 3 d in...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Academy of Sciences of the Czech Republic, Institute of Experimental Botany
2024-02-01
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| Series: | Photosynthetica |
| Subjects: | |
| Online Access: | https://ps.ueb.cas.cz/artkey/phs-202401-0008_effect-of-cryptochrome-1-deficiency-and-spectral-composition-of-light-on-photosynthetic-processes-in-a-thalian.php |
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| author | A. KHUDYAKOVA V. KRESLAVSKI A. KOSOBRYUKHOV M. VERESHAGIN S.I. ALLAKHVERDIEV |
| author_facet | A. KHUDYAKOVA V. KRESLAVSKI A. KOSOBRYUKHOV M. VERESHAGIN S.I. ALLAKHVERDIEV |
| author_sort | A. KHUDYAKOVA |
| collection | DOAJ |
| description | The role of cryptochrome 1 in photosynthetic processes and pro-/antioxidant balance in the Arabidopsis thaliana plants was studied. Wild type (WT) and hy4 mutant deficient in cryptochrome 1 grown for 20 d under red (RL, 660 nm) and blue (BL, 460 nm) light at an RL:BL = 4:1 ratio were kept for 3 d in different lights: RL:BL = 4:1, RL:BL:GL = 4:1:0.3 (GL - green light, 550 nm), and BL, then were exposed to high irradiance (4 h). Activity of PSII and the rate of photosynthesis in WT and hy4 decreased under the high irradiance in all spectral variants but under BL stronger decrease in the activity was found in the hy4 mutant than in WT. We assumed that lowered resistance of photosynthetic apparatus in the hy4 mutant may be associated with the low activity of the main antioxidant enzymes and reduced content of low-molecular-mass antioxidants in the mutant compared to the WT. |
| first_indexed | 2024-03-07T23:02:19Z |
| format | Article |
| id | doaj.art-995add58e57e43ffa0839fe51ba75228 |
| institution | Directory Open Access Journal |
| issn | 0300-3604 1573-9058 |
| language | English |
| last_indexed | 2024-03-07T23:02:19Z |
| publishDate | 2024-02-01 |
| publisher | Academy of Sciences of the Czech Republic, Institute of Experimental Botany |
| record_format | Article |
| series | Photosynthetica |
| spelling | doaj.art-995add58e57e43ffa0839fe51ba752282024-02-22T12:35:25ZengAcademy of Sciences of the Czech Republic, Institute of Experimental BotanyPhotosynthetica0300-36041573-90582024-02-01621717810.32615/ps.2024.009phs-202401-0008Effect of cryptochrome 1 deficiency and spectral composition of light on photosynthetic processes in A. thaliana under high-intensity light exposureA. KHUDYAKOVA0V. KRESLAVSKI1A. KOSOBRYUKHOV2M. VERESHAGIN3S.I. ALLAKHVERDIEV4Institute of Basic Biological Problems, Russian Academy of Sciences, Institutskaya Street 2, Pushchino, 142290 Moscow Region, RussiaInstitute of Basic Biological Problems, Russian Academy of Sciences, Institutskaya Street 2, Pushchino, 142290 Moscow Region, RussiaInstitute of Basic Biological Problems, Russian Academy of Sciences, Institutskaya Street 2, Pushchino, 142290 Moscow Region, RussiaK.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, 127276 Moscow, RussiaInstitute of Basic Biological Problems, Russian Academy of Sciences, Institutskaya Street 2, Pushchino, 142290 Moscow Region, RussiaThe role of cryptochrome 1 in photosynthetic processes and pro-/antioxidant balance in the Arabidopsis thaliana plants was studied. Wild type (WT) and hy4 mutant deficient in cryptochrome 1 grown for 20 d under red (RL, 660 nm) and blue (BL, 460 nm) light at an RL:BL = 4:1 ratio were kept for 3 d in different lights: RL:BL = 4:1, RL:BL:GL = 4:1:0.3 (GL - green light, 550 nm), and BL, then were exposed to high irradiance (4 h). Activity of PSII and the rate of photosynthesis in WT and hy4 decreased under the high irradiance in all spectral variants but under BL stronger decrease in the activity was found in the hy4 mutant than in WT. We assumed that lowered resistance of photosynthetic apparatus in the hy4 mutant may be associated with the low activity of the main antioxidant enzymes and reduced content of low-molecular-mass antioxidants in the mutant compared to the WT.https://ps.ueb.cas.cz/artkey/phs-202401-0008_effect-of-cryptochrome-1-deficiency-and-spectral-composition-of-light-on-photosynthetic-processes-in-a-thalian.phparabidopsis thalianacryptochromehigh-intensity lightphotosynthesispro-/antioxidant balance |
| spellingShingle | A. KHUDYAKOVA V. KRESLAVSKI A. KOSOBRYUKHOV M. VERESHAGIN S.I. ALLAKHVERDIEV Effect of cryptochrome 1 deficiency and spectral composition of light on photosynthetic processes in A. thaliana under high-intensity light exposure Photosynthetica arabidopsis thaliana cryptochrome high-intensity light photosynthesis pro-/antioxidant balance |
| title | Effect of cryptochrome 1 deficiency and spectral composition of light on photosynthetic processes in A. thaliana under high-intensity light exposure |
| title_full | Effect of cryptochrome 1 deficiency and spectral composition of light on photosynthetic processes in A. thaliana under high-intensity light exposure |
| title_fullStr | Effect of cryptochrome 1 deficiency and spectral composition of light on photosynthetic processes in A. thaliana under high-intensity light exposure |
| title_full_unstemmed | Effect of cryptochrome 1 deficiency and spectral composition of light on photosynthetic processes in A. thaliana under high-intensity light exposure |
| title_short | Effect of cryptochrome 1 deficiency and spectral composition of light on photosynthetic processes in A. thaliana under high-intensity light exposure |
| title_sort | effect of cryptochrome 1 deficiency and spectral composition of light on photosynthetic processes in a thaliana under high intensity light exposure |
| topic | arabidopsis thaliana cryptochrome high-intensity light photosynthesis pro-/antioxidant balance |
| url | https://ps.ueb.cas.cz/artkey/phs-202401-0008_effect-of-cryptochrome-1-deficiency-and-spectral-composition-of-light-on-photosynthetic-processes-in-a-thalian.php |
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