- Information
- Symbol: CSA
- MSU: LOC_Os01g16810
- RAPdb: Os01g0274800
- PSP score
- LOC_Os01g16810.1: 0.6746
- PLAAC score
- LOC_Os01g16810.1: 0
- pLDDT score
- 64.29
- Protein Structure from AlphaFold and UniProt
- Publication
- Carbon starved anther encodes a MYB domain protein that regulates sugar partitioning required for rice pollen development, 2010, Plant Cell.
- Mutation in CSA creates a new photoperiod-sensitive genic male sterile line applicable for hybrid rice seed production, 2013, Proc Natl Acad Sci U S A.
- Brassinosteroids Promote Development of Rice Pollen Grains and Seeds by Triggering Expression of CSA, a MYB Domain Protein., 2015, Plant J.
- Genbank accession number
- Key message
- Our findings suggest that CSA is a key transcriptional regulator for sugar partitioning in rice during male reproductive development
- Here, we describe a photoperiod-controlled male sterile line, carbon starved anther (csa), which contains a mutation in an R2R3 MYB transcription regulator of pollen development
- We have isolated and characterized a rice (Oryza sativa) mutant, carbon starved anther (csa), that showed increased sugar contents in leaves and stems and reduced levels of sugars and starch in floral organs
- The csa-based photoperiod-sensitive male sterile line allows the establishment of a stable two-line hybrid system, which promises to have a significant impact on agriculture
- Mutation in CSA creates a new photoperiod-sensitive genic male sterile line applicable for hybrid rice seed production
- CSA was isolated by map-based cloning and was shown to encode an R2R3 MYB transcription factor that was expressed preferentially in the anther tapetal cells and in the sugar-transporting vascular tissues
- In particular, the csa mutant had reduced levels of carbohydrates in later anthers and was male sterile
- In addition, the expression of MST8, encoding a monosaccharide transporter, was greatly reduced in csa anthers
- Furthermore, F(1) plants of csa and a restorer line JP69 exhibited heterosis (hybrid vigor), suggesting the feasibility of using this mutation to create hybrid rice
- The csa mutant had reduced accumulation of (14)C-labeled sugars in anther sink tissue
- Mechanically, OsBZR1 directly promotes CSA expression and CSA directly triggers expression of sugar partitioning and metabolic genes during pollen and seed development
- Connection
- CSA, OsMST8, Carbon starved anther encodes a MYB domain protein that regulates sugar partitioning required for rice pollen development, In addition, the expression of MST8, encoding a monosaccharide transporter, was greatly reduced in csa anthers
- CSA, OsMST8, Carbon starved anther encodes a MYB domain protein that regulates sugar partitioning required for rice pollen development, Furthermore, CSA was found to be associated in vivo and in vitro with the promoter of MST8
- CSA, OsBZR1, Brassinosteroids Promote Development of Rice Pollen Grains and Seeds by Triggering Expression of CSA, a MYB Domain Protein., Mechanically, OsBZR1 directly promotes CSA expression and CSA directly triggers expression of sugar partitioning and metabolic genes during pollen and seed development
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