Abstract
As an important agronomic trait, rice (Oryza sativa L.) leaf rolling has attracted much attention from plant biologists and breeders. Moderate leaf rolling increases the photosynthesis of cultivars and hence raises grain yield. However, the relevant molecular mechanism remains unclear. Here, we show the isolation and functional characterization of SHALLOT-LIKE1 (SLL1), a key gene controlling rice leaf rolling. sll1 mutant plants have extremely incurved leaves due to the defective development of sclerenchymatous cells on the abaxial side. Defective development can be functionally rescued by expression of SLL1. SLL1 is transcribed in various tissues and accumulates in the abaxial epidermis throughout leaf development. SLL1 encodes a SHAQKYF class MYB family transcription factor belonging to the KANADI family. SLL1 deficiency leads to defective programmed cell death of abaxial mesophyll cells and suppresses the development of abaxial features. By contrast, enhanced SLL1 expression stimulates phloem development on the abaxial side and suppresses bulliform cell and sclerenchyma development on the adaxial side. Additionally, SLL1 deficiency results in increased chlorophyll and photosynthesis. Our findings identify the role of SLL1 in the modulation of leaf abaxial cell development and in sustaining abaxial characteristics during leaf development. These results should facilitate attempts to use molecular breeding to increase the photosynthetic capacity of rice, as well as other crops, by modulating leaf development and rolling.
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Claims 8
Claim · model-written summary
sll1 mutant rice has extremely incurved leaves associated with defective abaxial sclerenchymatous cell development.
- Taxon
- Rice
Oryza sativat0 - Material
- sll1 mutant plantse0
- Organ / stage
- leavese0
- Outcome
- extremely incurved leavese0
- Qualifier
- defective development of sclerenchymatous cells on the abaxial sidee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sll1 mutant plants have extremely incurved leaves due to the defective development of sclerenchymatous cells on the abaxial side”
t0“Rice Leaf Rolling”
Claim · model-written summary
SLL1 expression rescued defective development in rice.
- Taxon
- RiceOryza sativat0
- Treatment
- expression of SLL1e0
- Gene
- SLL1e0
- Outcome
- Defective developmente0
- Direction
- rescuede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Defective development can be functionally rescued by expression of SLL1”
t0“Rice Leaf Rolling”
Claim · model-written summary
SLL1 transcripts occur in various tissues and accumulate in the abaxial epidermis during leaf development.
- Taxon
- RiceOryza sativat0
- Organ / stage
- abaxial epidermise0
- Gene
- SLL1e0
- Outcome
- transcribed in various tissues and accumulates in the abaxial epidermise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SLL1 is transcribed in various tissues and accumulates in the abaxial epidermis throughout leaf development”
t0“Rice Leaf Rolling”
Claim · model-written summary
SLL1 encodes a SHAQKYF class MYB transcription factor in the KANADI family.
- Taxon
- RiceOryza sativat0
- Gene
- SLL1e0
- Outcome
- SHAQKYF class MYB family transcription factore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SLL1 encodes a SHAQKYF class MYB family transcription factor belonging to the KANADI family”
t0“Rice Leaf Rolling”
Claim · model-written summary
SLL1 deficiency impaired programmed cell death in abaxial mesophyll and suppressed abaxial feature development.
- Taxon
- RiceOryza sativat0
- Treatment
- SLL1 deficiencye0
- Gene
- SLL1e0
- Outcome
- programmed cell death of abaxial mesophyll cells and suppresses the development of abaxial featurese0
- Direction
- defectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SLL1 deficiency leads to defective programmed cell death of abaxial mesophyll cells and suppresses the development of abaxial features”
t0“Rice Leaf Rolling”
Claim · model-written summary
Enhanced SLL1 expression stimulated abaxial phloem development.
- Taxon
- RiceOryza sativat0
- Treatment
- enhanced SLL1 expressione0
- Gene
- SLL1e0
- Outcome
- phloem development on the abaxial sidee0
- Direction
- stimulatese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhanced SLL1 expression stimulates phloem development on the abaxial side”
t0“Rice Leaf Rolling”
Claim · model-written summary
Enhanced SLL1 expression suppressed adaxial bulliform cell and sclerenchyma development.
- Taxon
- RiceOryza sativat0
- Treatment
- enhanced SLL1 expressione0
- Outcome
- bulliform cell and sclerenchyma development on the adaxial sidee0
- Direction
- suppressese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhanced SLL1 expression stimulates phloem development on the abaxial side and suppresses bulliform cell and sclerenchyma development on the adaxial side”
t0“Rice Leaf Rolling”
Claim · model-written summary
SLL1 deficiency increased chlorophyll and photosynthesis in rice.
- Taxon
- RiceOryza sativat0
- Treatment
- SLL1 deficiencye0
- Outcome
- chlorophyll and photosynthesise0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SLL1 deficiency results in increased chlorophyll and photosynthesis”
t0“Rice Leaf Rolling”
The same questions in other papers
transgenic · growth · Oryza sativa (rice)Positive and negative results
30 papers in the same direction as this paper · 13 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
41 papers more in this group
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