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Background
In rice, panicle apical abortion is a common phenomenon that usually results in a decreased number of branches and grains per panicle, and consequently a reduced grain yield. A better understanding of the molecular mechanism of panicle abortion is thus critical for maintaining and increasing rice production.
Results
We reported a new rice mutant panicle apical abortion 3 (paa3), which exhibited severe abortion of spikelet development on the upper part of the branches as well as decreased grain size over the whole panicle. Using mapping-based clone, the PAA3 was characterized as the LOC_ Os04g56160 gene, encoding an H+-ATPase. The PAA3 was expressed highly in the stem and panicle, and its protein was localized in the cytoplasm. Our data further showed that PAA3 played an important role in maintaining normal panicle development by participating in the removal of reactive oxygen species (ROS) in rice.
Conclusions
Our studies suggested that PAA3 might function to remove ROS, the accumulation of which leads to programmed cell death, and ultimately panicle apical abortion and decreased seed size in the paa3 panicle.
Keywords
rice, panicle apical abortion, programmed cell death, H+-ATPase
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Figure 7
This is a list of supplementary files associated with this preprint. Click to download.
- STable1Allprimersforthisstudy.xlsx
- SFigure1.pptx
Supplemental Figure 1, transcriptome analysis of paa3 a, Showed that there were 1075 differential genes in WT and paa3 samples, among which 991 genes were up-regulated and 84 genes were down-regulated. b The volcano figure showed an overall overview, including 28,317 genes with no change in expression, 991 up-regulated genes and 84 down-regulated genes.
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View the published article at Rice.
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Posted 10 Feb, 2021
No community comments so far
Reviewer #2 agreed
On 07 Feb, 2021
Reviewer #1 agreed
On 07 Feb, 2021
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Invitations sent on 07 Feb, 2021
Reviews received
Received 07 Feb, 2021
First submitted
On 04 Feb, 2021
Editor assigned
On 03 Feb, 2021
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On 03 Feb, 2021
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A new preprint design is coming!
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See the published version of this preprint at Rice.
This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
View the published article at Rice.
Version 1
Posted 10 Feb, 2021
No community comments so far
Reviewer #2 agreed
On 07 Feb, 2021
Reviewer #1 agreed
On 07 Feb, 2021
Reviewers invited
Invitations sent on 07 Feb, 2021
Reviews received
Received 07 Feb, 2021
First submitted
On 04 Feb, 2021
Editor assigned
On 03 Feb, 2021
Editor invited
On 03 Feb, 2021
Submission checks complete
On 03 Feb, 2021
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published article at Rice.
Background
In rice, panicle apical abortion is a common phenomenon that usually results in a decreased number of branches and grains per panicle, and consequently a reduced grain yield. A better understanding of the molecular mechanism of panicle abortion is thus critical for maintaining and increasing rice production.
Results
We reported a new rice mutant panicle apical abortion 3 (paa3), which exhibited severe abortion of spikelet development on the upper part of the branches as well as decreased grain size over the whole panicle. Using mapping-based clone, the PAA3 was characterized as the LOC_ Os04g56160 gene, encoding an H+-ATPase. The PAA3 was expressed highly in the stem and panicle, and its protein was localized in the cytoplasm. Our data further showed that PAA3 played an important role in maintaining normal panicle development by participating in the removal of reactive oxygen species (ROS) in rice.
Conclusions
Our studies suggested that PAA3 might function to remove ROS, the accumulation of which leads to programmed cell death, and ultimately panicle apical abortion and decreased seed size in the paa3 panicle.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
This is a list of supplementary files associated with this preprint. Click to download.
- STable1Allprimersforthisstudy.xlsx
- SFigure1.pptx
Supplemental Figure 1, transcriptome analysis of paa3 a, Showed that there were 1075 differential genes in WT and paa3 samples, among which 991 genes were up-regulated and 84 genes were down-regulated. b The volcano figure showed an overall overview, including 28,317 genes with no change in expression, 991 up-regulated genes and 84 down-regulated genes.
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