Abstract
High temperature (HT) has an adverse effect on rice grain filling by inhibiting the accumulation of storage materials. However, the regulatory mechanism of this inhibition remains unknown. Here, we report that Opaque2 like transcription factor OsbZIP58 is a key factor regulating storage material accumulation under HT. The OsbZIP58 gene promotes expression of many seed storage protein genes and starch synthesis genes while inhibits expression of some starch hydrolyzing α-amylase genes under HT. The loss of OsbZIP58 function leads to floury and shrunken endosperms and dramatically reduced storage materials in the seeds under HT. HT is found to affect alternative splicing of OsbZIP58, promoting the formation of the truncated OsbZIP58β protein form over the full-length OsbZIP58α protein form. The OsbZIP58β form has a lower transcriptional activity than the OsbZIP58α form, especially under HT condition. Interestingly, rice varieties with less heat sensitivity have reduced alternative splicing of OsbZIP58. Therefore, OsbZIP58 is a crucial gene in regulating storage material accumulation under HT and lower alternative splicing of OsbZIP58 may contribute to heat tolerance during grain filling.
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Claims 8
Claim · model-written summary
OsbZIP58 promoted seed storage protein gene expression under high temperature.
- Taxon
- rice
Oryza sativat0 - Gene
- OsbZIP58e0
- Outcome
- expression of many seed storage protein genese0
- Direction
- promotese0
- Qualifier
- under HTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The OsbZIP58 gene promotes expression of many seed storage protein genes and starch synthesis genes while inhibits expression of some starch hydrolyzing α-amylase genes under HT.”
t0“rice”
Claim · model-written summary
OsbZIP58 promoted starch synthesis gene expression under high temperature.
- Taxon
- riceOryza sativat0
- Gene
- OsbZIP58e0
- Outcome
- starch synthesis genese0
- Direction
- promotese0
- Qualifier
- under HTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The OsbZIP58 gene promotes expression of many seed storage protein genes and starch synthesis genes while inhibits expression of some starch hydrolyzing α-amylase genes under HT.”
t0“rice”
Claim · model-written summary
OsbZIP58 inhibited starch hydrolyzing alpha-amylase gene expression under high temperature.
- Taxon
- riceOryza sativat0
- Gene
- OsbZIP58e0
- Outcome
- expression of some starch hydrolyzing α-amylase genese0
- Direction
- inhibitse0
- Qualifier
- under HTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The OsbZIP58 gene promotes expression of many seed storage protein genes and starch synthesis genes while inhibits expression of some starch hydrolyzing α-amylase genes under HT.”
t0“rice”
Claim · model-written summary
Loss of OsbZIP58 caused floury and shrunken endosperms under high temperature.
- Taxon
- riceOryza sativat0
- Treatment
- loss of OsbZIP58 functione0
- Gene
- OsbZIP58e0
- Outcome
- floury and shrunken endospermse0
- Qualifier
- under HTe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The loss of OsbZIP58 function leads to floury and shrunken endosperms and dramatically reduced storage materials in the seeds under HT.”
t0“rice”
Claim · model-written summary
Loss of OsbZIP58 reduced seed storage materials under high temperature.
- Taxon
- riceOryza sativat0
- Treatment
- loss of OsbZIP58 functione0
- Gene
- OsbZIP58e0
- Outcome
- storage materials in the seedse0
- Direction
- reducede0
- Qualifier
- under HTe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The loss of OsbZIP58 function leads to floury and shrunken endosperms and dramatically reduced storage materials in the seeds under HT.”
t0“rice”
Claim · model-written summary
High temperature promoted truncated OsbZIP58 beta over full length alpha.
- Taxon
- riceOryza sativat0
- Treatment
- HTe0
- Gene
- OsbZIP58e0
- Outcome
- formation of the truncated OsbZIP58β protein forme0
- Direction
- promotinge0
- Comparator
- full-length OsbZIP58α protein forme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HT is found to affect alternative splicing of OsbZIP58, promoting the formation of the truncated OsbZIP58β protein form over the full-length OsbZIP58α protein form.”
t0“rice”
Claim · model-written summary
OsbZIP58 beta had lower transcriptional activity than alpha, especially under high temperature.
- Taxon
- riceOryza sativat0
- Gene
- OsbZIP58βe0
- Outcome
- transcriptional activitye0
- Direction
- lowere0
- Qualifier
- especially under HT conditione0
- Comparator
- OsbZIP58α forme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The OsbZIP58β form has a lower transcriptional activity than the OsbZIP58α form, especially under HT condition.”
t0“rice”
Claim · model-written summary
Less heat sensitive rice varieties had reduced OsbZIP58 alternative splicing.
- Taxon
- riceOryza sativae0
- Material
- rice varieties with less heat sensitivitye0
- Gene
- OsbZIP58e0
- Outcome
- alternative splicing of OsbZIP58e0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice varieties with less heat sensitivity have reduced alternative splicing of OsbZIP58.”
The same questions in other papers
heat · quality: protein · Oryza sativa (rice)Results differ
12 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
12 papers more in this group
See all 16 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.