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Exogenous spermidine alleviates oxidative damage and reduce yield loss in rice submerged at tillering stage

View Article: PubMed Central

ABSTRACT

To figure out whether spermidine (Spd) can alleviate oxidative damage on rice (Oryza sativa L.) caused by submergence stress, Ningjing 3 was used in this study. The results showed that, spraying Spd on rice leaves at a concentration of 0.5 mM promoted the growth recovery of rice after drainage, such as green leaves, tillers, and aboveground dry mass. According to physiological analysis, Spd accelerate restored chlorophylls damage by submergence, and decreased the rate of O2·− generation and H2O2 content, inhibited submergence-induced lipid peroxidation. Spd also helped to maintain antioxidant enzyme activities after drainage, such as superoxide dismutase, peroxidase, and GR, which ultimately improved the recovery ability of submerged rice. With the effect of Spd, the rice yields increased by 12.1, 17.9, 13.5, and 18.0%, of which submerged for 1, 3, 5, 7 days, respectively. It is supposed that exogenous Spd really has an alleviate effect on submergence damage and reduce yield loss of rice.

No MeSH data available.


Effects of Spd on tillers number per hill of rice after submergence.
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Figure 2: Effects of Spd on tillers number per hill of rice after submergence.

Mentions: Except for T1 treatment, the green leaves number (Figure 1), tillers number (Figure 2) and aboveground dry mass (Figure 3) of rice were significantly decreased after submergence stress (P < 0.05) compared with the control, and resumed slowly after drainage. Application of exogenous SPD significantly increased the green leaves number, tillers number, and aboveground dry mass of submerged rice, effectively alleviating the submergence-mediated growth reduction.


Exogenous spermidine alleviates oxidative damage and reduce yield loss in rice submerged at tillering stage
Effects of Spd on tillers number per hill of rice after submergence.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4628117&req=5

Figure 2: Effects of Spd on tillers number per hill of rice after submergence.
Mentions: Except for T1 treatment, the green leaves number (Figure 1), tillers number (Figure 2) and aboveground dry mass (Figure 3) of rice were significantly decreased after submergence stress (P < 0.05) compared with the control, and resumed slowly after drainage. Application of exogenous SPD significantly increased the green leaves number, tillers number, and aboveground dry mass of submerged rice, effectively alleviating the submergence-mediated growth reduction.

View Article: PubMed Central

ABSTRACT

To figure out whether spermidine (Spd) can alleviate oxidative damage on rice (Oryza sativa L.) caused by submergence stress, Ningjing 3 was used in this study. The results showed that, spraying Spd on rice leaves at a concentration of 0.5 mM promoted the growth recovery of rice after drainage, such as green leaves, tillers, and aboveground dry mass. According to physiological analysis, Spd accelerate restored chlorophylls damage by submergence, and decreased the rate of O2&middot;&minus; generation and H2O2 content, inhibited submergence-induced lipid peroxidation. Spd also helped to maintain antioxidant enzyme activities after drainage, such as superoxide dismutase, peroxidase, and GR, which ultimately improved the recovery ability of submerged rice. With the effect of Spd, the rice yields increased by 12.1, 17.9, 13.5, and 18.0%, of which submerged for 1, 3, 5, 7 days, respectively. It is supposed that exogenous Spd really has an alleviate effect on submergence damage and reduce yield loss of rice.

No MeSH data available.