Abstract
Abstract Ozone (O 3 ) stress inhibits rice growth and development, resulting in yield loss and poor quality. However, the effect of ozone stress on the lodging resistance of rice stems has scarcely been reported. In this study, three indica rice cultivars and three modern japonica rice cultivars were treated with high O 3 concentration (100 ppb) while a gas fumigation platform was used in the indoor control (about 10 ppb). The influence of O 3 stress on lodging resistance was investigated in 2016 and 2017. Ozone stress reduced the in situ pushing resistance of intact plants by 40% and single stems by 32.0%. The breaking resistance of the third, fourth, and fifth internodes from the top of the rice stem was, respectively, reduced by 24.0%, 25.1%, and 33.6%, on average. The O 3 ‐induced reduction in the basal internode morphological characteristics was associated with the reduced cross‐sectional area, maximum and minimum stem diameter, dry weight per unit length, length, dry weight, and culm wall thickness. Among these characteristics, the largest reduction was exhibited by internode dry weight (−43.1%), while the lowest reduction was observed for culm wall thickness (−9.7%). The O 3 induced a significantly higher reduction in basal internode characteristics of indica compared with the japonica rice, with a larger effect in the lower internode than the upper internode, indicating a significant interaction between O 3 and rice cultivar and internode position. Statistical analysis revealed a significant positive linear correlation between the response of in situ pushing resistance of rice under O 3 stress and the response of basal internode breaking resistance, cross‐sectional area, and dry weight per unit length. Ozone stress significantly reduced the lodging resistance in the rice stem, which is primarily associated with the thinning and poor filling of the basal internodes, and the O 3 impacts varied with cultivars and internode positions, but were similar between the two years. These results provide a scientific reference for the study of lodging resistance regulation of rice under high O 3 concentrations.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
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 11
Claim · model-written summary
High O3 concentration (100 ppb) reduced in situ pushing resistance of intact rice plants by 40%.
- Taxon
- rice
Oryza sativat0 - Treatment
- high O 3 concentration (100 ppb)e7
- Outcome
- in situ pushing resistancee0
- Direction
- reducede0
- Value
- 40%e0
- Qualifier
- intact plantse0
- Comparator
- indoor control (about 10 ppb)e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“stem lodging characteristics of different indica and japonica rice cultivars”
e0“Ozone stress reduced the in situ pushing resistance of intact plants by 40% and single stems by 32.0%”
e7“treated with high O 3 concentration (100 ppb) while a gas fumigation platform was used in the indoor control (about 10 ppb)”
Claim · model-written summary
High O3 concentration (100 ppb) reduced in situ pushing resistance of single rice stems by 32.0%.
- Taxon
- riceOryza sativat0
- Treatment
- high O 3 concentration (100 ppb)e7
- Outcome
- in situ pushing resistancee0
- Direction
- reducede0
- Value
- 32.0%e0
- Qualifier
- single stemse0
- Comparator
- indoor control (about 10 ppb)e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“stem lodging characteristics of different indica and japonica rice cultivars”
e0“Ozone stress reduced the in situ pushing resistance of intact plants by 40% and single stems by 32.0%”
e7“treated with high O 3 concentration (100 ppb) while a gas fumigation platform was used in the indoor control (about 10 ppb)”
Claim · model-written summary
High O3 concentration (100 ppb) reduced breaking resistance of the third rice internode by 24.0%.
- Taxon
- riceOryza sativat0
- Treatment
- high O 3 concentration (100 ppb)e7
- Outcome
- breaking resistancee1
- Direction
- reducede1
- Value
- 24.0%e1
- Qualifier
- thirde1
- Comparator
- indoor control (about 10 ppb)e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“stem lodging characteristics of different indica and japonica rice cultivars”
e1“The breaking resistance of the third, fourth, and fifth internodes from the top of the rice stem was, respectively, reduced by 24.0%, 25.1%, and 33.6%, on average”
e7“treated with high O 3 concentration (100 ppb) while a gas fumigation platform was used in the indoor control (about 10 ppb)”
Claim · model-written summary
High O3 concentration (100 ppb) reduced breaking resistance of the fourth rice internode by 25.1%.
- Taxon
- riceOryza sativat0
- Treatment
- high O 3 concentration (100 ppb)e7
- Outcome
- breaking resistancee1
- Direction
- reducede1
- Value
- 25.1%e1
- Qualifier
- fourthe1
- Comparator
- indoor control (about 10 ppb)e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“stem lodging characteristics of different indica and japonica rice cultivars”
e1“The breaking resistance of the third, fourth, and fifth internodes from the top of the rice stem was, respectively, reduced by 24.0%, 25.1%, and 33.6%, on average”
e7“treated with high O 3 concentration (100 ppb) while a gas fumigation platform was used in the indoor control (about 10 ppb)”
Claim · model-written summary
High O3 concentration (100 ppb) reduced breaking resistance of the fifth rice internode by 33.6%.
- Taxon
- riceOryza sativat0
- Treatment
- high O 3 concentration (100 ppb)e7
- Outcome
- breaking resistancee1
- Direction
- reducede1
- Value
- 33.6%e1
- Qualifier
- fifthe1
- Comparator
- indoor control (about 10 ppb)e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“stem lodging characteristics of different indica and japonica rice cultivars”
e1“The breaking resistance of the third, fourth, and fifth internodes from the top of the rice stem was, respectively, reduced by 24.0%, 25.1%, and 33.6%, on average”
e7“treated with high O 3 concentration (100 ppb) while a gas fumigation platform was used in the indoor control (about 10 ppb)”
Claim · model-written summary
High O3 concentration (100 ppb) caused the largest reduction in basal internode dry weight (43.1%).
- Taxon
- riceOryza sativat0
- Treatment
- high O 3 concentration (100 ppb)e7
- Outcome
- internode dry weighte2
- Direction
- largest reductione2
- Value
- 43.1%e2
- Comparator
- indoor control (about 10 ppb)e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“stem lodging characteristics of different indica and japonica rice cultivars”
e2“Among these characteristics, the largest reduction was exhibited by internode dry weight (−43.1%), while the lowest reduction was observed for culm wall thickness (−9.7%)”
e7“treated with high O 3 concentration (100 ppb) while a gas fumigation platform was used in the indoor control (about 10 ppb)”
Claim · model-written summary
High O3 concentration (100 ppb) caused the lowest reduction in culm wall thickness (9.7%).
- Taxon
- riceOryza sativat0
- Treatment
- high O 3 concentration (100 ppb)e7
- Outcome
- culm wall thicknesse2
- Direction
- lowest reductione2
- Value
- 9.7%e2
- Comparator
- indoor control (about 10 ppb)e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“stem lodging characteristics of different indica and japonica rice cultivars”
e2“Among these characteristics, the largest reduction was exhibited by internode dry weight (−43.1%), while the lowest reduction was observed for culm wall thickness (−9.7%)”
e7“treated with high O 3 concentration (100 ppb) while a gas fumigation platform was used in the indoor control (about 10 ppb)”
Claim · model-written summary
O3 induced a significantly higher reduction in basal internode characteristics of indica than of japonica rice.
- Taxon
- riceOryza sativat0
- Material
- indicae3
- Treatment
- O 3e3
- Outcome
- basal internode characteristicse3
- Direction
- significantly higher reductione3
- Comparator
- japonica ricee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“stem lodging characteristics of different indica and japonica rice cultivars”
e3“The O 3 induced a significantly higher reduction in basal internode characteristics of indica compared with the japonica rice”
Claim · model-written summary
The response of in situ pushing resistance to O3 stress was positively linearly correlated with the response of basal internode breaking resistance in rice.
- Taxon
- riceOryza sativat0
- Treatment
- O 3 stresse4
- Outcome
- response of in situ pushing resistancee4
- Direction
- positive linear correlatione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“stem lodging characteristics of different indica and japonica rice cultivars”
e4“Statistical analysis revealed a significant positive linear correlation between the response of in situ pushing resistance of rice under O 3 stress and the response of basal internode breaking resistance”
Claim · model-written summary
Ozone stress significantly reduced lodging resistance in the rice stem.
- Taxon
- riceOryza sativat0
- Treatment
- Ozone stresse5
- Outcome
- lodging resistancee5
- Direction
- significantly reducede5
- Comparator
- indoor control (about 10 ppb)e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“stem lodging characteristics of different indica and japonica rice cultivars”
e5“Ozone stress significantly reduced the lodging resistance in the rice stem”
e7“treated with high O 3 concentration (100 ppb) while a gas fumigation platform was used in the indoor control (about 10 ppb)”
Claim · model-written summary
The O3 impacts on rice varied with cultivars and internode positions but were similar between the two years.
- Taxon
- riceOryza sativat0
- Outcome
- O 3 impactse6
- Direction
- variede6
- Qualifier
- similar between the two yearse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“stem lodging characteristics of different indica and japonica rice cultivars”
e6“the O 3 impacts varied with cultivars and internode positions, but were similar between the two years”
The same questions in other papers
ozone · growth · Oryza sativa (rice)Results differ
23 papers in the same direction as this paper · 3 in the opposite direction
- negative
- positive
- positive
23 papers more in this group
See all 27 papers →ozone · disease · Oryza sativa (rice)Results agree
4 papers in the same direction as this paper
- negative
- negative
- negative
1 paper more in this group
See all 5 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.