Exogenous ascorbic acid delayed leaf senescence of early flowering rice mutant FTL10
| Autor: | W.Q. Ding, Y.X. Wei, H. Gao, C L Peng, Qilei Zhang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Senescence Physiology Plant Science Photosynthesis 01 natural sciences chemistry.chemical_compound nitroblue tetrazolium staining nonenzymatic antioxidant rubisco large subunit rubisco small subunit seed-setting rate soluble protein lcsh:Botany chemistry.chemical_classification Reactive oxygen species Oryza sativa biology RuBisCO fungi food and beverages 04 agricultural and veterinary sciences Ascorbic acid Genetically modified rice lcsh:QK1-989 Horticulture chemistry Chlorophyll 040103 agronomy & agriculture biology.protein 0401 agriculture forestry and fisheries 010606 plant biology & botany |
| Zdroj: | Photosynthetica, Vol 57, Iss 4, Pp 960-966 (2019) |
| ISSN: | 1573-9058 0300-3604 |
| Popis: | FTL10 is an early flowering mutant of OsFTL10-suppressed transgenic rice (Oryza sativa L.) with premature senescence phenotype. Early leaf senescence can cause negative effects on rice yield, therefore delaying leaf senescence and prolonging the leaf functional stage is one of the important approaches to increase the rice yield. It is well known that ascorbic acid (AsA) is involved in regulating plant growth. To explore the effect of AsA on leaf senescence of FTL10, we treated rice leaves with 0.28 mM AsA. Results showed that total antioxidant capacity was higher and reactive oxygen species were lower in the AsA-treated group. The expression of senescence-associated genes was higher in the control group. Exogenous AsA can stabilize chlorophyll and Rubisco protein contents, delay leaf senescence, and maintain net photosynthetic rate (PN) of rice leaves. Our results suggest that exogenous application of AsA can delay leaf senescence, increase PN, and then increase the rice yield. |
| Databáze: | OpenAIRE |
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