Abstract
Far-red light significantly affects plant growth, including seedling development, root growth, and leaf angle, but the regulatory mechanisms underlying the positioning of the rice leaf angle remain unclear. In this study, eight light quality treatments were applied: white light (W), white light with far-red (W + Fr), red light (R), red light with far-red (R + Fr), blue light (B), blue light with far-red (B + Fr), red-blue light (RB), and red-blue light with far-red (RB + Fr). Additionally, six far-red light ratios (0%, 7.5%, 15%, 30%, 60%, 100%) were used to investigate the molecular mechanisms by which far-red light modulates leaf angles in rice seedlings. Compared to treatments without far-red light, supplemental far-red light significantly increased leaf angle and markedly decreased plant height, enhanced seedling quality, increased specific leaf weight, promoted root growth and photosynthetic capacity, and overall improved seedling performance. Moreover, far-red light markedly increased the leaf angle of rice seedlings. As the far-red proportion increased, leaf angle first increased and then decreased, a pattern consistent with the anatomical observations. Transcriptome analysis and WGCNA identified RPL5 as a key candidate gene involved in leaf angle regulation. However, the functional role of RPL5 and its regulatory mechanisms on leaf angles require further experimental validation. This study provides a theoretical basis for understanding how light and auxin signals coordinate to regulate rice leaf angles in response to far-red light.
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Claims 7
Claim · model-written summary
Supplemental far-red light increased rice seedling leaf angle.
- Taxon
- Rice
Oryza sativat0 - Treatment
- supplemental far-red lighte0
- Outcome
- leaf anglee0
- Direction
- increasede0
- Comparator
- treatments without far-red lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“Compared to treatments without far-red light, supplemental far-red light significantly increased leaf angle and markedly decreased plant height, enhanced seedling quality, increased specific leaf weight, promoted root growth and photosynthetic capacity, and overall improved seedling performance”
Claim · model-written summary
Supplemental far-red light decreased rice seedling height.
- Taxon
- RiceOryza sativat0
- Treatment
- supplemental far-red lighte0
- Outcome
- plant heighte0
- Direction
- decreasede0
- Comparator
- treatments without far-red lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“Compared to treatments without far-red light, supplemental far-red light significantly increased leaf angle and markedly decreased plant height, enhanced seedling quality, increased specific leaf weight, promoted root growth and photosynthetic capacity, and overall improved seedling performance”
Claim · model-written summary
Supplemental far-red light enhanced seedling quality and performance.
- Taxon
- RiceOryza sativat0
- Treatment
- supplemental far-red lighte0
- Outcome
- seedling qualitye0
- Direction
- enhancede0
- Comparator
- treatments without far-red lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“Compared to treatments without far-red light, supplemental far-red light significantly increased leaf angle and markedly decreased plant height, enhanced seedling quality, increased specific leaf weight, promoted root growth and photosynthetic capacity, and overall improved seedling performance”
Claim · model-written summary
Supplemental far-red light increased specific leaf weight.
- Taxon
- RiceOryza sativat0
- Treatment
- supplemental far-red lighte0
- Outcome
- specific leaf weighte0
- Direction
- increasede0
- Comparator
- treatments without far-red lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“Compared to treatments without far-red light, supplemental far-red light significantly increased leaf angle and markedly decreased plant height, enhanced seedling quality, increased specific leaf weight, promoted root growth and photosynthetic capacity, and overall improved seedling performance”
Claim · model-written summary
Supplemental far-red light promoted root growth and photosynthetic capacity.
- Taxon
- RiceOryza sativat0
- Treatment
- supplemental far-red lighte0
- Outcome
- root growth and photosynthetic capacitye0
- Direction
- promotede0
- Comparator
- treatments without far-red lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“Compared to treatments without far-red light, supplemental far-red light significantly increased leaf angle and markedly decreased plant height, enhanced seedling quality, increased specific leaf weight, promoted root growth and photosynthetic capacity, and overall improved seedling performance”
Claim · model-written summary
Leaf angle first rose then fell as far-red proportion increased.
- Taxon
- RiceOryza sativat0
- Treatment
- far-red proportione0
- Outcome
- leaf anglee0
- Direction
- first increased and then decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“As the far-red proportion increased, leaf angle first increased and then decreased, a pattern consistent with the anatomical observations”
Claim · model-written summary
Transcriptome analysis and WGCNA identified RPL5 as a candidate leaf-angle gene.
- Taxon
- RiceOryza sativat0
- Gene
- RPL5e0
- Outcome
- key candidate gene involved in leaf angle regulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“Transcriptome analysis and WGCNA identified RPL5 as a key candidate gene involved in leaf angle regulation”
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