Abstract
Abstract Important role of flowering genes in enhancing grain productivity in rice has become well recognized for a number of key genes regulating the florigen production, but little has been known for the two florigen genes themselves. In this study, pleiotropism of Rice Flowering Locus T 1 ( RFT1 ), one of the two florigen genes in rice, was firstly evaluated using near isogenic lines (NILs) carrying RFT1 alleles from the indica rice cultivars Zhenshan 97 (ZS97) and Milyang 46, respectively, and then determined by transformation of the RFT1 ZS97 allele into a japonica rice variety, Zhonghua 11. The RFT1 ZS97 allele was shown to delay heading and increase plant height, grain weight, grain number and grain yield, indicating that RFT1 plays an important role in the growth and development of rice. This study has also validated the potential of using a new type of genetic resource, sequential residual heterozygotes (SeqRHs), for QTL fine-mapping. A step-by-step approach was employed for SeqRHs identification, NIL development and QTL fine-mapping. The heterozygous segments and candidate QTL regions were gradually narrowed down. Eventually, the QTL region was delimited to a 1.7 kb region containing a single gene.
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Claims 6
Claim · model-written summary
The RFT1 ZS97 allele delayed rice heading.
- Taxon
- rice
Oryza sativat0 - Treatment
- RFT1 ZS97 allelee0
- Gene
- RFT1e0
- Outcome
- headinge0
- Direction
- delaye0
- Comparator
- Milyang 46e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RFT1 ZS97 allele was shown to delay heading and increase plant height, grain weight, grain number and grain yield”
e1“near isogenic lines (NILs) carrying RFT1 alleles from the indica rice cultivars Zhenshan 97 (ZS97) and Milyang 46”
t0“rice”
Claim · model-written summary
The RFT1 ZS97 allele increased plant height.
- Taxon
- riceOryza sativat0
- Treatment
- RFT1 ZS97 allelee0
- Gene
- RFT1e0
- Outcome
- plant heighte0
- Direction
- increasee0
- Comparator
- Milyang 46e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RFT1 ZS97 allele was shown to delay heading and increase plant height, grain weight, grain number and grain yield”
e1“near isogenic lines (NILs) carrying RFT1 alleles from the indica rice cultivars Zhenshan 97 (ZS97) and Milyang 46”
t0“rice”
Claim · model-written summary
The RFT1 ZS97 allele increased grain weight.
- Taxon
- riceOryza sativat0
- Treatment
- RFT1 ZS97 allelee0
- Gene
- RFT1e0
- Outcome
- grain weighte0
- Direction
- increasee0
- Comparator
- Milyang 46e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RFT1 ZS97 allele was shown to delay heading and increase plant height, grain weight, grain number and grain yield”
e1“near isogenic lines (NILs) carrying RFT1 alleles from the indica rice cultivars Zhenshan 97 (ZS97) and Milyang 46”
t0“rice”
Claim · model-written summary
The RFT1 ZS97 allele increased grain number.
- Taxon
- riceOryza sativat0
- Treatment
- RFT1 ZS97 allelee0
- Gene
- RFT1e0
- Outcome
- grain numbere0
- Direction
- increasee0
- Comparator
- Milyang 46e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RFT1 ZS97 allele was shown to delay heading and increase plant height, grain weight, grain number and grain yield”
e1“near isogenic lines (NILs) carrying RFT1 alleles from the indica rice cultivars Zhenshan 97 (ZS97) and Milyang 46”
t0“rice”
Claim · model-written summary
The RFT1 ZS97 allele increased grain yield.
- Taxon
- riceOryza sativat0
- Treatment
- RFT1 ZS97 allelee0
- Gene
- RFT1e0
- Outcome
- grain yielde0
- Direction
- increasee0
- Comparator
- Milyang 46e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RFT1 ZS97 allele was shown to delay heading and increase plant height, grain weight, grain number and grain yield”
e1“near isogenic lines (NILs) carrying RFT1 alleles from the indica rice cultivars Zhenshan 97 (ZS97) and Milyang 46”
t0“rice”
Claim · model-written summary
SeqRHs were validated for QTL fine mapping, delimiting a QTL region to 1.7 kb with one gene.
- Taxon
- riceOryza sativat0
- Outcome
- QTL regione1
- Value
- 1.7 kbe1
- Qualifier
- containing a single genee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study has also validated the potential of using a new type of genetic resource, sequential residual heterozygotes (SeqRHs), for QTL fine-mapping.”
e1“Eventually, the QTL region was delimited to a 1.7 kb region containing a single gene.”
t0“rice”
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