Overexpressing the HD-Zip class II transcription factor EcHB1 from Eucalyptus camaldulensis increased the leaf photosynthesis and drought tolerance of Eucalyptus
| العنوان: | Overexpressing the HD-Zip class II transcription factor EcHB1 from Eucalyptus camaldulensis increased the leaf photosynthesis and drought tolerance of Eucalyptus |
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| المؤلفون: | Yuko T. Hanba, Keisuke Sasaki, Sakihito Kitajima, Yuuki Ida, Tetsu Kawazu, Takashi Hibino |
| المصدر: | Scientific Reports, Vol 9, Iss 1, Pp 1-12 (2019) Scientific Reports |
| بيانات النشر: | Nature Publishing Group, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, Chloroplasts, Drought tolerance, lcsh:Medicine, Biology, Photosynthesis, 01 natural sciences, Article, 03 medical and health sciences, Gene expression, Botany, lcsh:Science, Transcription factor, Eucalyptus, Multidisciplinary, fungi, lcsh:R, Plant physiology, Water, food and beverages, Plant Transpiration, Carbon Dioxide, Droughts, Chloroplast, Plant Leaves, 030104 developmental biology, Eucalyptus camaldulensis, Plant stress responses, Plant Stomata, lcsh:Q, 010606 plant biology & botany, Transcription Factors |
| الوصف: | Alteration in the leaf mesophyll anatomy by genetic modification is potentially a promising tool for improving the physiological functions of trees by improving leaf photosynthesis. Homeodomain leucine zipper (HD-Zip) transcription factors are candidates for anatomical alterations of leaves through modification of cell multiplication, differentiation, and expansion. Full-length cDNA encoding a Eucalyptus camaldulensis HD-Zip class II transcription factor (EcHB1) was over-expressed in vivo in the hybrid Eucalyptus GUT5 generated from Eucalyptus grandis and Eucalyptus urophylla. Overexpression of EcHB1 induced significant modification in the mesophyll anatomy of Eucalyptus with enhancements in the number of cells and chloroplasts on a leaf-area basis. The leaf-area-based photosynthesis of Eucalyptus was improved in the EcHB1-overexpression lines, which was due to both enhanced CO2 diffusion into chloroplasts and increased photosynthetic biochemical functions through increased number of chloroplasts per unit leaf area. Additionally, overexpression of EcHB1 suppressed defoliation and thus improved the growth of Eucalyptus trees under drought stress, which was a result of reduced water loss from trees due to the reduction in leaf area with no changes in stomatal morphology. These results gave us new insights into the role of the HD-Zip II gene. |
| اللغة: | English |
| تدمد: | 2045-2322 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad5fe3e098e0c474608ce008102cc784 http://link.springer.com/article/10.1038/s41598-019-50610-5 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....ad5fe3e098e0c474608ce008102cc784 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20452322 |
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