Abstract
The low red/far-red (R/FR) light proportion at the base of the high-density wheat population leads to poor stem quality and increases lodging risk. We used Shannong 23 and Shannong 16 as the test materials. By setting three-light quality treatments: normal light (CK), red light (RL), and far-red light (FRL), we irradiated the base internodes of the stem with RL and FRL for 7h. Our results showed that RL irradiation enhanced stem quality, as revealed by increased breaking strength, stem diameter, wall thickness and, dry weight per unit length, and the total amount of lignin and related gene expression increased, at the same time. The composition of lignin subunits was related to the lodging resistance of wheat. The proportion of S+G subunits and H subunits played a key role in wheat lodging resistance. RL could increase the content of S subunits and G subunits and the proportion of S+G subunits, reduce the proportion of H subunits. We described here, to the best of our knowledge, the systematic study of the mechanism involved in the regulation of stem breaking strength by light quality, particularly the effect of light quality on lignin biosynthesis and its relationship with lodging resistance in wheat.
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Claims 8
Claim · model-written summary
Red light irradiation increased breaking strength, stem diameter and wall thickness of wheat stems compared with normal light.
- Taxon
- wheat
Triticum aestivume0 - Material
- Shannong 23 and Shannong 16e1
- Treatment
- RL irradiatione3
- Outcome
- breaking strength, stem diameter, wall thicknesse3
- Direction
- increasede3
- Comparator
- normal light (CK)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the base of the high-density wheat population”
e1“We used Shannong 23 and Shannong 16 as the test materials”
e2“three-light quality treatments: normal light (CK), red light (RL), and far-red light (FRL)”
e3“RL irradiation enhanced stem quality, as revealed by increased breaking strength, stem diameter, wall thickness and, dry weight per unit length”
Claim · model-written summary
Red light irradiation increased dry weight per unit length of wheat stems compared with normal light.
- Taxon
- wheatTriticum aestivume0
- Material
- Shannong 23 and Shannong 16e1
- Treatment
- RL irradiatione3
- Outcome
- dry weight per unit lengthe3
- Direction
- increasede3
- Comparator
- normal light (CK)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the base of the high-density wheat population”
e1“We used Shannong 23 and Shannong 16 as the test materials”
e2“three-light quality treatments: normal light (CK), red light (RL), and far-red light (FRL)”
e3“RL irradiation enhanced stem quality, as revealed by increased breaking strength, stem diameter, wall thickness and, dry weight per unit length”
Claim · model-written summary
Red light irradiation increased the total amount of lignin in wheat stems.
- Taxon
- wheatTriticum aestivume0
- Treatment
- RL irradiatione3
- Outcome
- total amount of lignine4
- Direction
- increasede4
- Comparator
- normal light (CK)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the base of the high-density wheat population”
e2“three-light quality treatments: normal light (CK), red light (RL), and far-red light (FRL)”
e3“RL irradiation enhanced stem quality, as revealed by increased breaking strength, stem diameter, wall thickness and, dry weight per unit length”
e4“the total amount of lignin and related gene expression increased”
Claim · model-written summary
The composition of lignin subunits was related to lodging resistance of wheat.
- Taxon
- wheatTriticum aestivume0
- Compound
- lignin subunitse5
- Outcome
- lodging resistancee5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the base of the high-density wheat population”
e5“The composition of lignin subunits was related to the lodging resistance of wheat”
Claim · model-written summary
The proportion of S+G subunits and H subunits plays a key role in wheat lodging resistance.
- Taxon
- wheatTriticum aestivume6
- Compound
- S+G subunits and H subunitse6
- Outcome
- lodging resistancee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The proportion of S+G subunits and H subunits played a key role in wheat lodging resistance”
Claim · model-written summary
Red light increased the content of S and G lignin subunits.
- Taxon
- wheatTriticum aestivume0
- Treatment
- RLe7
- Outcome
- content of S subunits and G subunitse7
- Direction
- increasee7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the base of the high-density wheat population”
e7“RL could increase the content of S subunits and G subunits and the proportion of S+G subunits, reduce the proportion of H subunits”
Claim · model-written summary
Red light increased the proportion of S+G lignin subunits.
- Taxon
- wheatTriticum aestivume0
- Treatment
- RLe7
- Outcome
- proportion of S+G subunitse7
- Direction
- increasee7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the base of the high-density wheat population”
e7“RL could increase the content of S subunits and G subunits and the proportion of S+G subunits, reduce the proportion of H subunits”
Claim · model-written summary
Red light reduced the proportion of H lignin subunits.
- Taxon
- wheatTriticum aestivume0
- Treatment
- RLe7
- Outcome
- proportion of H subunitse7
- Direction
- reducee7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the base of the high-density wheat population”
e7“RL could increase the content of S subunits and G subunits and the proportion of S+G subunits, reduce the proportion of H subunits”
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