ArticlePlant physiology2022
POLLEN WALL ABORTION 1 is essential for pollen wall development in rice.
Article in Plant physiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 15 citations in OpenAlex.
- The ATP-Citrate Lyase Subunit ACLA, Coordinates Rice Pollen Development by Coupling Transcriptional Regulation with Metabolic Homeostasis.Rice (New York, N.Y.) · 2026Article
- Comparative Transcriptomics Reveals Important Genes Underlying Heat-Tolerant Sterility in Photo-Thermo-Sensitive Male Sterile Wheat in Seed Production Environments.Biomolecules · 2026Article
- Unraveling Advances in Rice Male Sterility Systems: From Genetic Basis to Hybrid Breeding Innovation.Plants (Basel, Switzerland) · 2026Review
- bHLH Transcription Factors in Cereal Crops: Diverse Functions in Regulating Growth, Development and Stress Responses.International journal of molecular sciences · 2025Review
- Application of genome editing in plant reproductive biology: recent advances and challenges.Plant reproduction · 2024Review
- Identification of the new allele ptc1-2 and analysis of the regulatory role of PTC1 gene in rice anther development.BMC plant biology · 2024Article
- The fertility research of "Huajin 6", a new variety of honeysuckle.Scientific reports · 2024Article
- Extreme trait GWAS (Et-GWAS): Unraveling rare variants in the 3,000 rice genome.Life science alliance · 2024Article
- Changes in mBMC plant biology · 2023Article
- CRISPR/Cas Technology Revolutionizes Crop Breeding.Plants (Basel, Switzerland) · 2023Review
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Authors and funding
9 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The integrity of pollen wall structures is essential for pollen development and maturity in rice (Oryza sativa L.). In this study, we isolated and characterized the rice male-sterile mutant pollen wall abortion 1 (pwa1), which exhibits a defective pollen wall (DPW) structure and has sterile pollen. Map-based cloning, genetic complementation, and gene knockout experiments revealed that PWA1 corresponds to the gene LOC_Os01g55094 encoding a coiled-coil domain-containing protein. PWA1 localized to the nucleus, and PWA1 was expressed in the tapetum and microspores. PWA1 interacted with the transcription factor TAPETUM DEGENERATION RETARDATION (TDR)-INTERACTING PROTEIN2 (TIP2, also named bHLH142) in vivo and in vitro. The tip2-1 mutant, which we obtained by clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9-mediated gene editing, showed delayed tapetum degradation, sterile pollen, and DPWs. We determined that TIP2/bHLH142 regulates PWA1 expression by binding to its promoter. Analysis of the phenotype of the tip2-1 pwa1 double mutant indicated that TIP2/bHLH142 functions upstream of PWA1. Further studies suggested that PWA1 has transcriptional activation activity and participates in pollen intine development through the β-glucosidase Os12BGlu38. Therefore, we identified a sterility factor, PWA1, and uncovered a regulatory network underlying the formation of the pollen wall and mature pollen in rice.
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