Abstract
Seed shattering is an important trait that influences grain yield. A major controlling quantitative trait locus in rice is qSH1. Although the degree of shattering is correlated with the level of expression of qSH1, some qSH1-defective cultivars display moderate shattering while others show a non-shattering phenotype. Os05 g38120 (SH5) on chromosome 5 is highly homologous to qSH1. Although we detected SH5 transcripts in various organs, this gene was highly expressed at the abscission zone (AZ) in the pedicels. When expression of this gene was suppressed in easy-shattering 'Kasalath', development of the AZ was reduced and thereby so was seed loss. By contrast, the extent of shattering, as well as AZ development, was greatly enhanced in moderate-shattering 'Dongjin' rice when SH5 was overexpressed. Likewise, overexpression of SH5 in the non-shattering 'Ilpum' led to an increase in seed shattering because lignin levels were decreased in the basal region of spikelets in the absence of development of an AZ. We also determined that two shattering-related genes, SHAT1 and Sh4, which are necessary for proper formation of an AZ, were induced by SH5. Based on these observations, we propose that SH5 modulates seed shattering by enhancing AZ development and inhibiting lignin biosynthesis.
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 9
Claim · model-written summary
SH5 was highly expressed at the abscission zone in pedicels.
- Taxon
- rice
Oryza sativat0 - Organ / stage
- abscission zone (AZ) in the pedicelse0
- Gene
- SH5t1
- Outcome
- highly expressede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this gene was highly expressed at the abscission zone (AZ) in the pedicels”
t0“A major controlling quantitative trait locus in rice is qSH1”
t1“SH5”
Claim · model-written summary
Suppressing SH5 expression in Kasalath reduced abscission-zone development.
- Taxon
- riceOryza sativat0
- Material
- 'Kasalath'e0
- Treatment
- expression of this gene was suppressede0
- Gene
- SH5t1
- Outcome
- development of the AZe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When expression of this gene was suppressed in easy-shattering 'Kasalath', development of the AZ was reduced”
t0“A major controlling quantitative trait locus in rice is qSH1”
t1“SH5”
Claim · model-written summary
Suppressing SH5 expression in Kasalath reduced seed loss.
- Taxon
- riceOryza sativat0
- Material
- 'Kasalath'e0
- Treatment
- expression of this gene was suppressede0
- Gene
- SH5t1
- Outcome
- seed losse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When expression of this gene was suppressed in easy-shattering 'Kasalath', development of the AZ was reduced and thereby so was seed loss”
t0“A major controlling quantitative trait locus in rice is qSH1”
t1“SH5”
Claim · model-written summary
SH5 overexpression enhanced shattering in Dongjin rice.
- Taxon
- riceOryza sativat0
- Material
- 'Dongjin'e0
- Treatment
- SH5 was overexpressede0
- Gene
- SH5e0
- Outcome
- extent of shatteringe0
- Direction
- greatly enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the extent of shattering, as well as AZ development, was greatly enhanced in moderate-shattering 'Dongjin' rice when SH5 was overexpressed”
t0“A major controlling quantitative trait locus in rice is qSH1”
Claim · model-written summary
SH5 overexpression enhanced abscission-zone development in Dongjin rice.
- Taxon
- riceOryza sativat0
- Material
- 'Dongjin'e0
- Treatment
- SH5 was overexpressede0
- Gene
- SH5e0
- Outcome
- AZ developmente0
- Direction
- greatly enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the extent of shattering, as well as AZ development, was greatly enhanced in moderate-shattering 'Dongjin' rice when SH5 was overexpressed”
t0“A major controlling quantitative trait locus in rice is qSH1”
Claim · model-written summary
SH5 overexpression increased shattering in Ilpum.
- Taxon
- riceOryza sativat0
- Material
- 'Ilpum'e0
- Treatment
- overexpression of SH5e0
- Gene
- SH5e0
- Outcome
- seed shatteringe0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“overexpression of SH5 in the non-shattering 'Ilpum' led to an increase in seed shattering”
t0“A major controlling quantitative trait locus in rice is qSH1”
Claim · model-written summary
SH5 overexpression decreased lignin levels in basal spikelets of Ilpum.
- Taxon
- riceOryza sativat0
- Material
- 'Ilpum'e0
- Organ / stage
- basal region of spikeletse0
- Treatment
- overexpression of SH5e0
- Gene
- SH5e0
- Outcome
- lignin levelse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“overexpression of SH5 in the non-shattering 'Ilpum' led to an increase in seed shattering because lignin levels were decreased in the basal region of spikelets in the absence of development of an AZ”
t0“A major controlling quantitative trait locus in rice is qSH1”
Claim · model-written summary
SH5 induced SHAT1 and Sh4.
- Taxon
- riceOryza sativat0
- Gene
- SHAT1 and Sh4e0
- Outcome
- were induced by SH5e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two shattering-related genes, SHAT1 and Sh4, which are necessary for proper formation of an AZ, were induced by SH5”
t0“A major controlling quantitative trait locus in rice is qSH1”
Claim · model-written summary
The authors propose that SH5 modulates shattering through abscission-zone development and lignin biosynthesis inhibition.
- Taxon
- riceOryza sativat0
- Gene
- SH5e0
- Outcome
- seed shatteringe0
- Qualifier
- enhancing AZ development and inhibiting lignin biosynthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“we propose that SH5 modulates seed shattering by enhancing AZ development and inhibiting lignin biosynthesis”
t0“A major controlling quantitative trait locus in rice is qSH1”
The same questions in other papers
transgenic · yield · Oryza sativa (rice)Positive and negative results
20 papers in the same direction as this paper · 81 in the opposite direction
- positive
- positive
- positive
98 papers more in this group
See all 102 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.