Abstract
【Objective】 Rice blast is one of the major diseases in rice production and cause serious yield losses every year. As a kind of environment friendly disease control measures, silicon fertilizer application plays an important role in enhancing plant disease resistance, but the mechanism is not totally clear. The purpose of this study was to investigate the physiological mechanism of silicon-enhanced resistance of rice to blast,and to provide a theoretical foundation and methods of controlling rice blast. 【Method】 Two rice near-isogenic lines(NILs) with different resistances to blast, i.e. CO39(susceptible) and C101LAC(Pi-1)(resistant) were used in the experiments. There were four treatments: no silicon added and no inoculation with M. oryzae(Si-M-); silicon added but no inoculation with M. oryzae(Si+M-); no silicon added but inoculation with M. oryzae(Si-M+); silicon added and inoculation with M. oryzae(Si+M+). Using a grown chamber to control the growing conditions, the hydroponic culture experiments with Hoagland's nutrient solution were conducted to clarify the effects of silicon on disease incidence, content of silicon, phenolics, SA, ethylene and H2 O2 in roots and leaves of rice. 【Result】 Si application significantly reduced the blast incidence and disease index for both two rice lines. And the blast incidence and disease index of C101LAC(Pi-1) were obviously lower than CO39. Si concentration increased significantly in all leaf, stem and root tissues of both two rice lines by Si treatment regardless of inoculation. While Si concentrations in leaves and stems were obviously higher than that in roots. After inoculation with M. oryzae, Si treatment significantly reduced the total phenolic content in leaves of CO39 and C101LAC(Pi-1). In roots of two rice lines, Si application had no significant effect on the total phenolic content. Without inoculation, Si application had no significant impact on the total phenol content in leaves 3 d after inoculation, but reduced it 7 d after inoculation for both rice lines. The content of total phenol was obviously lower in roots than in leaves. After inoculation with M. oryzae, Si treatment significantly reduced the lignin content in leaves of CO39 and C101LAC(Pi-1), but there were no significant effect in roots. Without inoculation, Si application significantly increaced SA content in leaves 3 d and 7 d after inoculation for CO39, but only 7 d after inoculation for C101LAC(Pi-1). Si application also significantly increased SA content in leaves of CO39 3 d after inoculation, but not in C101LAC(Pi-1). SA was not detected in roots for both CO39 and C101LAC(Pi-1). Under the condition of inoculation, Si supply significantly reduced ethylene content in leaves and roots for both CO39 and C101LAC(Pi-1). Without inoculation, Si application significantly reduced ethylene content in roots on 3 d after inoculation for CO39, and 3 d and 7 d for C101LAC(Pi-1). After inoculation with M. oryzae, Si treatment significantly reduced the H2 O2 content in leaves, but significantly increased it in roots, for both CO39 and C101LAC(Pi-1). H2 O2 content was obviously lower in roots than in leaves for both rice lines. 【Conclusion】 These results indicate that Si can significantly increase the blast resistance of rice. Si addition can adjust biochemical metabolism of phenolic compounds in plants, and leads to variation of the signal compounds such as SA, ethylene, H2 O2 in the rice to enhance the resistance against blast.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher.
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 20
Claim · model-written summary
Si application significantly reduced blast incidence and disease index in both rice lines compared with inoculated plants without silicon.
- Taxon
- rice
Oryza sativae0 - Treatment
- Si applicatione0
- Interactor
- M. oryzaee1pathogen
- Outcome
- blast incidence and disease indexe0
- Direction
- reducede0
- Comparator
- no silicon added but inoculation with M. oryzaee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si application significantly reduced the blast incidence and disease index for both two rice lines”
e1“no silicon added but inoculation with M. oryzae(Si-M+)”
Claim · model-written summary
Blast incidence and disease index were lower in C101LAC(Pi-1) than in CO39 rice.
- Taxon
- riceOryza sativae1
- Material
- C101LAC(Pi-1)e0
- Outcome
- blast incidence and disease indexe0
- Direction
- lowere0
- Comparator
- CO39e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the blast incidence and disease index of C101LAC(Pi-1) were obviously lower than CO39”
e1“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
Si treatment significantly increased Si concentration in leaf, stem and root tissues of both rice lines, regardless of inoculation.
- Taxon
- riceOryza sativae1
- Organ / stage
- leaf, stem and root tissuese0
- Treatment
- Si treatmente0
- Outcome
- Si concentratione0
- Direction
- increasede0
- Qualifier
- regardless of inoculatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si concentration increased significantly in all leaf, stem and root tissues of both two rice lines by Si treatment regardless of inoculation”
e1“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
Si concentrations were higher in leaves and stems than in roots.
- Taxon
- riceOryza sativae1
- Organ / stage
- leaves and stemse0
- Outcome
- Si concentrationse0
- Direction
- highere0
- Comparator
- rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“While Si concentrations in leaves and stems were obviously higher than that in roots”
e1“Si concentration increased significantly in all leaf, stem and root tissues of both two rice lines by Si treatment regardless of inoculation”
Claim · model-written summary
After inoculation with M. oryzae, Si treatment significantly reduced total phenolic content in leaves of CO39 and C101LAC(Pi-1).
- Taxon
- riceOryza sativae2
- Material
- CO39 and C101LAC(Pi-1)e0
- Organ / stage
- leavese0
- Treatment
- Si treatmente0
- Interactor
- M. oryzaee0pathogen
- Outcome
- total phenolic contente0
- Direction
- reducede0
- Comparator
- no silicon added but inoculation with M. oryzaee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After inoculation with M. oryzae, Si treatment significantly reduced the total phenolic content in leaves of CO39 and C101LAC(Pi-1)”
e1“no silicon added but inoculation with M. oryzae(Si-M+)”
e2“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
Si application had no significant effect on total phenolic content in roots of the rice lines.
- Taxon
- riceOryza sativae2
- Organ / stage
- rootse0
- Treatment
- Si applicatione0
- Outcome
- total phenolic contente0
- Direction
- no significant effecte0
- Comparator
- no silicon addede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In roots of two rice lines, Si application had no significant effect on the total phenolic content”
e1“no silicon added but inoculation with M. oryzae(Si-M+)”
e2“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
Without inoculation, Si application had no significant effect on total phenol content in leaves 3 d after inoculation.
- Taxon
- riceOryza sativae2
- Organ / stage
- leavese0
- Treatment
- Si applicatione0
- Outcome
- total phenol contente0
- Direction
- no significant impacte0
- Qualifier
- 3 d after inoculatione0
- Comparator
- no silicon added and no inoculation with M. oryzaee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without inoculation, Si application had no significant impact on the total phenol content in leaves 3 d after inoculation”
e1“There were four treatments: no silicon added and no inoculation with M. oryzae(Si-M-)”
e2“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
Without inoculation, Si application reduced total phenol content in leaves 7 d after inoculation in both rice lines.
- Taxon
- riceOryza sativae3
- Organ / stage
- leavese0
- Treatment
- Si applicatione0
- Outcome
- total phenol contente0
- Direction
- reducede1
- Qualifier
- 7 d after inoculatione1
- Comparator
- no silicon added and no inoculation with M. oryzaee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without inoculation, Si application had no significant impact on the total phenol content in leaves 3 d after inoculation”
e1“but reduced it 7 d after inoculation for both rice lines”
e2“There were four treatments: no silicon added and no inoculation with M. oryzae(Si-M-)”
e3“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
After inoculation with M. oryzae, Si treatment significantly reduced lignin content in leaves of CO39 and C101LAC(Pi-1).
- Taxon
- riceOryza sativae2
- Material
- CO39 and C101LAC(Pi-1)e0
- Organ / stage
- leavese0
- Treatment
- Si treatmente0
- Interactor
- M. oryzaee0pathogen
- Outcome
- lignin contente0
- Direction
- reducede0
- Comparator
- no silicon added but inoculation with M. oryzaee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After inoculation with M. oryzae, Si treatment significantly reduced the lignin content in leaves of CO39 and C101LAC(Pi-1), but there were no significant effect in roots”
e1“no silicon added but inoculation with M. oryzae(Si-M+)”
e2“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
After inoculation with M. oryzae, Si treatment had no significant effect on lignin content in roots.
- Taxon
- riceOryza sativae2
- Organ / stage
- rootse0
- Treatment
- Si treatmente0
- Interactor
- M. oryzaee0pathogen
- Outcome
- lignin contente0
- Direction
- no significant effecte0
- Comparator
- no silicon added but inoculation with M. oryzaee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After inoculation with M. oryzae, Si treatment significantly reduced the lignin content in leaves of CO39 and C101LAC(Pi-1), but there were no significant effect in roots”
e1“no silicon added but inoculation with M. oryzae(Si-M+)”
e2“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
Si application significantly increased SA content in leaves of CO39 at 3 d and 7 d after inoculation, and also at 3 d after inoculation.
- Taxon
- riceOryza sativae3
- Material
- CO39e0
- Organ / stage
- leavese0
- Treatment
- Si applicatione0
- Outcome
- SA contente0
- Direction
- increacede0
- Qualifier
- 3 d and 7 d after inoculatione0
- Comparator
- no silicon addede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without inoculation, Si application significantly increaced SA content in leaves 3 d and 7 d after inoculation for CO39, but only 7 d after inoculation for C101LAC(Pi-1)”
e1“Si application also significantly increased SA content in leaves of CO39 3 d after inoculation, but not in C101LAC(Pi-1)”
e2“There were four treatments: no silicon added and no inoculation with M. oryzae(Si-M-)”
e3“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
Without inoculation, Si application significantly increased SA content in leaves of C101LAC(Pi-1) only at 7 d after inoculation.
- Taxon
- riceOryza sativae2
- Material
- C101LAC(Pi-1)e0
- Organ / stage
- leavese0
- Treatment
- Si applicatione0
- Outcome
- SA contente0
- Direction
- increacede0
- Qualifier
- only 7 d after inoculatione0
- Comparator
- no silicon addede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without inoculation, Si application significantly increaced SA content in leaves 3 d and 7 d after inoculation for CO39, but only 7 d after inoculation for C101LAC(Pi-1)”
e1“There were four treatments: no silicon added and no inoculation with M. oryzae(Si-M-)”
e2“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
SA was not detected in roots of CO39 and C101LAC(Pi-1).
- Taxon
- riceOryza sativae1
- Material
- CO39 and C101LAC(Pi-1)e0
- Organ / stage
- rootse0
- Outcome
- SA was not detectede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SA was not detected in roots for both CO39 and C101LAC(Pi-1)”
e1“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
Under inoculation, Si supply significantly reduced ethylene content in leaves and roots of both CO39 and C101LAC(Pi-1).
- Taxon
- riceOryza sativae2
- Material
- CO39 and C101LAC(Pi-1)e0
- Organ / stage
- leaves and rootse0
- Treatment
- Si supplye0
- Interactor
- M. oryzaee1pathogen
- Outcome
- ethylene contente0
- Direction
- reducede0
- Qualifier
- Under the condition of inoculatione0
- Comparator
- no silicon added but inoculation with M. oryzaee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the condition of inoculation, Si supply significantly reduced ethylene content in leaves and roots for both CO39 and C101LAC(Pi-1)”
e1“no silicon added but inoculation with M. oryzae(Si-M+)”
e2“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
Without inoculation, Si application significantly reduced ethylene content in roots of CO39 at 3 d after inoculation.
- Taxon
- riceOryza sativae2
- Material
- CO39e0
- Organ / stage
- rootse0
- Treatment
- Si applicatione0
- Outcome
- ethylene contente0
- Direction
- reducede0
- Qualifier
- 3 d after inoculatione0
- Comparator
- no silicon added and no inoculation with M. oryzaee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without inoculation, Si application significantly reduced ethylene content in roots on 3 d after inoculation for CO39, and 3 d and 7 d for C101LAC(Pi-1)”
e1“There were four treatments: no silicon added and no inoculation with M. oryzae(Si-M-)”
e2“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
Without inoculation, Si application significantly reduced ethylene content in roots of C101LAC(Pi-1) at 3 d and 7 d after inoculation.
- Taxon
- riceOryza sativae2
- Material
- C101LAC(Pi-1)e0
- Organ / stage
- rootse0
- Treatment
- Si applicatione0
- Outcome
- ethylene contente0
- Direction
- reducede0
- Qualifier
- 3 d and 7 de0
- Comparator
- no silicon added and no inoculation with M. oryzaee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without inoculation, Si application significantly reduced ethylene content in roots on 3 d after inoculation for CO39, and 3 d and 7 d for C101LAC(Pi-1)”
e1“There were four treatments: no silicon added and no inoculation with M. oryzae(Si-M-)”
e2“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
After inoculation with M. oryzae, Si treatment significantly reduced H2O2 content in leaves of CO39 and C101LAC(Pi-1).
- Taxon
- riceOryza sativae2
- Material
- CO39 and C101LAC(Pi-1)e0
- Organ / stage
- leavese0
- Treatment
- Si treatmente0
- Interactor
- M. oryzaee0pathogen
- Outcome
- H2 O2 contente0
- Direction
- reducede0
- Comparator
- no silicon added but inoculation with M. oryzaee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After inoculation with M. oryzae, Si treatment significantly reduced the H2 O2 content in leaves, but significantly increased it in roots, for both CO39 and C101LAC(Pi-1)”
e1“no silicon added but inoculation with M. oryzae(Si-M+)”
e2“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
After inoculation with M. oryzae, Si treatment significantly increased H2O2 content in roots of CO39 and C101LAC(Pi-1).
- Taxon
- riceOryza sativae2
- Material
- CO39 and C101LAC(Pi-1)e0
- Organ / stage
- rootse0
- Treatment
- Si treatmente0
- Interactor
- M. oryzaee0pathogen
- Outcome
- H2 O2 contente0
- Direction
- increasede0
- Comparator
- no silicon added but inoculation with M. oryzaee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After inoculation with M. oryzae, Si treatment significantly reduced the H2 O2 content in leaves, but significantly increased it in roots, for both CO39 and C101LAC(Pi-1)”
e1“no silicon added but inoculation with M. oryzae(Si-M+)”
e2“Si application significantly reduced the blast incidence and disease index for both two rice lines”
Claim · model-written summary
H2O2 content was lower in roots than in leaves of both rice lines.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H2 O2 content was obviously lower in roots than in leaves for both rice lines”
Claim · model-written summary
Si addition is proposed to adjust phenolic metabolism and alter SA, ethylene and H2O2 signals, thereby enhancing rice resistance to blast.
- Taxon
- riceOryza sativae0
- Treatment
- Si additione0
- Compound
- SA, ethylene, H2 O2e0
- Outcome
- resistance against blaste0
- Qualifier
- adjust biochemical metabolism of phenolic compoundse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si addition can adjust biochemical metabolism of phenolic compounds in plants, and leads to variation of the signal compounds such as SA, ethylene, H2 O2 in the rice to enhance the resistance against blast”
The same questions in other papers
silicon atom · quality: phytochemicals · Oryza sativa (rice)Positive and negative results
2 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
6 papers more in this group
See all 10 papers →silicon atom · disease · Oryza sativa (rice)Positive and negative results
68 papers in the same direction as this paper · 3 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- negative
- negative
70 papers more in this group
See all 74 papers →silicon atom · molecular: metabolites · Oryza sativa (rice)Positive and negative results
10 papers in the same direction as this paper · 66 reporting no difference from an alternative
- positive
- positive
- positive
73 papers more in this group
See all 77 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.