Abstract
Bacterial panicle blight and seedling rot diseases in rice plants (Oryza sativa L.) are caused by the pathogenic bacterial Burkholderia glumae. The nanosilicon treatment is gaining attraction but its effectiveness towards B. glumae infection in rice seedlings through regulating enzymatic activities remains largely unexplored. This study aimed to evaluate the bio-efficacy of nanosilicon in controlling seedling rot disease through regulation of peroxidase and polyphenol oxidase enzymes after challenge infected with B. glumae in rice variety MR297 and PadiU Putra. Nanosilicon was applied as seed priming in germination testing at 0, 300, 600, and 900 ppm on both rice varieties before B. glumae inoculation. Both rice seed varieties primed with nanosilicon at 600 ppm exhibited a significant increase in seedling germination performances over control. The rice seedling of MR297 was more responsive to nanosilicon at 600 ppm with only 17.78% of disease severity index over 26.67% in PadiU Putra and was therefore selected for the enzymatic activity screening. The results showed that the foliar spray of nanosilicon rice plants (MR297) significantly increased both peroxidase (POX) at 24 h and polyphenol oxidase (PPO) at 48 h after B. glumae inoculation with 20.44/min/g and 7.46/g activities, respectively. In addition, the plant growth performances were significantly increased compared with control under the same treatment. This demonstrates nanosilicon's potential to control rice seedling rot disease by regulating POX and PPO activities and hence promote plant growth. The application of nanosilicon is an environmentally friendly approach for controlling B. glumae infection at the early rice growing stage.
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Claims 6
Claim · model-written summary
At 600 ppm nanosilicon, MR297 seed germination performance increased significantly over control.
- Taxon
- rice
Oryza sativae0 - Material
- MR297e1
- Treatment
- nanosilicon at 600 ppme0
- Outcome
- seedling germination performancese0
- Direction
- increasee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both rice seed varieties primed with nanosilicon at 600 ppm exhibited a significant increase in seedling germination performances over control.”
e1“rice variety MR297 and PadiU Putra”
Claim · model-written summary
At 600 ppm nanosilicon, PadiU Putra seed germination performance increased significantly over control.
- Taxon
- riceOryza sativae0
- Material
- PadiU Putrae1
- Treatment
- nanosilicon at 600 ppme0
- Outcome
- seedling germination performancese0
- Direction
- increasee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both rice seed varieties primed with nanosilicon at 600 ppm exhibited a significant increase in seedling germination performances over control.”
e1“rice variety MR297 and PadiU Putra”
Claim · model-written summary
MR297 had a disease severity index of 17.78%, versus 26.67% for PadiU Putra, at 600 ppm nanosilicon.
- Taxon
- riceOryza sativae0
- Material
- MR297e0
- Treatment
- nanosilicon at 600 ppme0
- Outcome
- disease severity indexe0
- Direction
- onlye0
- Value
- 17.78%e0
- Qualifier
- 26.67%e0
- Comparator
- PadiU Putrae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rice seedling of MR297 was more responsive to nanosilicon at 600 ppm with only 17.78% of disease severity index over 26.67% in PadiU Putra”
Claim · model-written summary
Nanosilicon foliar spray significantly increased POX activity at 24 hours after inoculation in MR297.
- Taxon
- riceOryza sativae0
- Material
- MR297e0
- Treatment
- foliar spray of nanosilicone0
- Interactor
- B. glumae
Burkholderia glumaee0pathogen - Gene
- peroxidase (POX)e0
- Outcome
- peroxidase (POX)e0
- Direction
- increasede0
- Value
- 20.44/min/ge0
- Qualifier
- 24 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the foliar spray of nanosilicon rice plants (MR297) significantly increased both peroxidase (POX) at 24 h and polyphenol oxidase (PPO) at 48 h after B. glumae inoculation with 20.44/min/g and 7.46/g activities, respectively.”
Claim · model-written summary
Nanosilicon foliar spray significantly increased PPO activity at 48 hours after inoculation in MR297.
- Taxon
- riceOryza sativae0
- Material
- MR297e0
- Treatment
- foliar spray of nanosilicone0
- Interactor
- B. glumaeBurkholderia glumaee0pathogen
- Gene
- polyphenol oxidase (PPO)e0
- Outcome
- polyphenol oxidase (PPO)e0
- Direction
- increasede0
- Value
- 7.46/ge0
- Qualifier
- 48 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the foliar spray of nanosilicon rice plants (MR297) significantly increased both peroxidase (POX) at 24 h and polyphenol oxidase (PPO) at 48 h after B. glumae inoculation with 20.44/min/g and 7.46/g activities, respectively.”
Claim · model-written summary
Nanosilicon significantly increased plant growth performance relative to control.
- Taxon
- riceOryza sativae1
- Material
- MR297e1
- Treatment
- foliar spray of nanosilicone1
- Outcome
- plant growth performancese0
- Direction
- increasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the plant growth performances were significantly increased compared with control under the same treatment.”
e1“foliar spray of nanosilicon rice plants (MR297)”
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