ArticleRice (New York, N.Y.)2019
Carbohydrate metabolism and fertility related genes high expression levels promote heterosis in autotetraploid rice harboring double neutral genes.
Article in Rice (New York, N.Y.), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.
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30 citing papers in PubMed, 63 citations in OpenAlex.
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- Cytological Observation and RNA-Seq Analyses RevealPlants (Basel, Switzerland) · 2024Article
- Seed development-related genes contribute to high yield heterosis in integrated utilization of elite autotetraploid and neo-tetraploid rice.Frontiers in plant science · 2024Article
- Cytological observation and RNA-seq analysis reveal novel miRNAs high expression associated with the pollen fertility of neo-tetraploid rice.BMC plant biology · 2023Article
- Comparative cytological and transcriptome analyses ofFrontiers in plant science · 2023Article
- An uncharacterized protein NY1 targets EAT1 to regulate anther tapetum development in polyploid rice.BMC plant biology · 2022Article
- Physiologic and molecular responses of indica-japonica subspecies tetraploid rice seed germination to ion beams.Scientific reports · 2022Article
- Developmental Differences between Anthers of Diploid and Autotetraploid Rice at Meiosis.Plants (Basel, Switzerland) · 2022Article
- Thermo-Sensitive Genic Male Sterile Lines of Neo-Tetraploid Rice Developed through Gene Editing Technology Revealed High Levels of Hybrid Vigor.Plants (Basel, Switzerland) · 2022Article
- Full-length transcriptome reconstruction reveals genetic differences in hybrids of Oryza sativa and Oryza punctata with different ploidy and genome compositions.BMC plant biology · 2022Article
- Overdominance at the Gene Expression Level Plays a Critical Role in the Hybrid Root Growth ofInternational journal of molecular sciences · 2021Article
- A Genome Doubling Event Reshapes Rice Morphology and Products by Modulating Chromatin Signatures and Gene Expression Profiling.Rice (New York, N.Y.) · 2021Article
- Improved photosynthetic characteristics correlated with enhanced biomass in a heterotic FPhotosynthesis research · 2021Article
- A New Way of Rice Breeding: Polyploid Rice Breeding.Plants (Basel, Switzerland) · 2021Review
- Genomics Analyses Reveal Unique Classification, Population Structure and Novel Allele of Neo-Tetraploid Rice.Rice (New York, N.Y.) · 2021Article
- Cytological Observations and Bulked-Segregant Analysis Coupled Global Genome Sequencing Reveal Two Genes Associated with Pollen Fertility in Tetraploid Rice.International journal of molecular sciences · 2021Article
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
backgroundAutotetraploid rice hybrids have great potential to increase the production, but hybrid sterility is a major hindrance in the utilization of hybrid vigor in polyploid rice, which is mainly caused by pollen abortion. Our previous study showed that double pollen fertility neutral genes, Sa-n and Sb-n, can overcome hybrid sterility in autotetraploid rice. Here, we used an autotetraploid rice line harboring double neutral genes to develop hybrids by crossing with auto- and neo-tetraploid rice, and evaluated heterosis and its underlying molecular mechanism.
resultsAll autotetraploid rice hybrids, which harbored double pollen fertility neutral genes, Sa-n and Sb-n, displayed high seed setting and significant positive heterosis for yield and yield-related traits. Cytological observations revealed normal chromosome behaviors and higher frequency of bivalents in the hybrid than parents during meiosis. Transcriptome analysis revealed significantly higher expressions of important saccharides metabolism and starch synthase related genes, such as OsBEIIb and OsSSIIIa, in the grains of hybrid than parents. Furthermore, many meiosis-related and specific genes, including DPW and CYP703A3, displayed up-regulation in the hybrid compared to a parent with low seed setting. Many non-additive genes were detected in the hybrid, and GO term of carbohydrate metabolic process was significantly enriched in all the transcriptome tissues except flag leaf (three days after flowering). Moreover, many differentially expressed genes (DEGs) were identified in the yield-related quantitative trait loci (QTLs) regions as possible candidate genes.
conclusionOur results revealed that increase in the number of bivalents improved the seed setting of hybrid harboring double pollen fertility neutral genes. Many important genes, including meiosis-related and meiosis-specific genes and saccharides metabolism and starch synthase related genes, exhibited heterosis specific expression patterns in polyploid rice during different development stages. The functional analysis of important genes will provide valuable information for molecular mechanisms of heterosis in polyploid rice.
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