Year: 2019
Type: article
Abstract: 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.
Source: Photosynthetica
DOI: 10.32615/ps.2019.113
Authors: Q.L. ZHANG, W.Q. DING, Y.X. WEI, H. GAO, C.L. PENG
Institution: South China Normal University
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: gold
Estimated APC paid: $3,140
OpenAlex ID: W2969607218