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Spatiotemporal resolved leaf angle establishment improves rice grain yield via controlling population density

ABSTRACT: Spatiotemporal resolved leaf angle establishment improves rice grain yield via controlling population density

PROVIDER: PRJNA656130 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12416710_1.fastq.gz	Fastqsanger.gz
	SRR12416710_2.fastq.gz	Fastqsanger.gz
	SRR12416711_1.fastq.gz	Fastqsanger.gz
	SRR12416711_2.fastq.gz	Fastqsanger.gz
	SRR12416712_1.fastq.gz	Fastqsanger.gz

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Spatiotemporal resolved leaf angle establishment improves rice grain yield via controlling population density [mRNA]

Project description:Leaf angle is mainly determined by the lamina joint (LJ), and contributes to ideal crop architecture for high yield. Here, we dissected five successive stages with distinct cytological features of LJs spanning organogenesis to leaf angle formation, and obtained the underlying stage-specific mRNAs and small RNAs, which well explained the cytological dynamics during LJ organogenesis and leaf angle plasticity. Combining the gene coexpression correlation with high-throughput promoter analysis, we identified a set of transcription factors determining the stage- and/or cytological structure-specific profiles. The functional studies of these TFs demonstrated that cytological dynamics determined leaf angle, and the knockout rice of these TFs with erect leaves significantly enhanced yield by maintaining the proper tiller number under dense planting. This work revealed the high-resolution mechanisms how the cytological dynamics of LJ determined the leaf erectness, and served as a valuable resource to remodel rice architecture for high yield via controlling population density.

2020-08-18 | GSE155930 | GEO

Spatiotemporal resolved leaf angle establishment improves rice grain yield via controlling population density [miRNA-seq]

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Spatiotemporal resolved leaf angle establishment improves rice grain yield via controlling population density [mRNA]

Project description:Spatiotemporal resolved leaf angle establishment improves rice grain yield via controlling population density [mRNA]

| PRJNA656365 | ENA

Spatiotemporal resolved leaf angle establishment improves rice grain yield via controlling population density [miRNA-seq]

Project description:Spatiotemporal resolved leaf angle establishment improves rice grain yield via controlling population density [miRNA-seq]

| PRJNA656366 | ENA

Spatiotemporal resolved leaf angle establishment improves rice grain yield via controlling population density

Project description:This SuperSeries is composed of the SubSeries listed below.

2020-08-18 | GSE155932 | GEO

Spatiotemporal Resolved Leaf Angle Establishment Improves Rice Grain Yield via Controlling Population Density.

Project description:Leaf angle is mainly determined by the lamina joint (LJ) and contributes to ideal crop architecture for high yield. Here, we dissected five successive stages with distinct cytological features of LJs spanning organogenesis to leaf angle formation and obtained the underlying stage-specific mRNAs and small RNAs, which well explained the cytological dynamics during LJ organogenesis and leaf angle plasticity. Combining the gene coexpression correlation with high-throughput promoter analysis, we identified a set of transcription factors (TFs) determining the stage- and/or cytological structure-specific profiles. The functional studies of these TFs demonstrated that cytological dynamics determined leaf angle and that the knockout rice of these TFs with erect leaves significantly enhanced yield by maintaining the proper tiller number under dense planting. This work revealed the high-resolution mechanisms of how the cytological dynamics of LJ determined leaf erectness and served as a valuable resource to remodel rice architecture for high yield by controlling population density.

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BTA1 controls tiller angle and shoot gravitropism by regulating auxin transport and signaling in rice

Project description:Tiller angle is a key factor determining rice plant architecture, planting density, light interception, photosynthetic efficiency, disease resistance, and grain yield. The distribution of auxin and shoot gravitropism play important roles in regulating tiller angles of rice. Several tiller angle-associated genes have been cloned. However, the mechanisms underlying tiller angle control are far from clear. In this study, we isolate bta1-1, a mutant with an enlarged tiller angle throughout its life cycle. A detailed analysis reveals that BTA1 has multiple functions because several major agronomic traits, including tiller and panicle number, biomass production, secondary branch number per panicle, panicle weight, grain size, and grain weight, are increased in bta1-1 plants. Moreover, BTA1 is a positive regulator of shoot gravitropism in rice. Shoot responses to gravistimulation are disrupted in bta1-1 under both light and dark conditions. Gene cloning reveals that bta1-1 is a novel mutant allele of LA1. LA1 is able to rescue the tiller angle and shoot gravitropism defects observed in bta1-1. BTA1/LA1 is required to regulate the expression of auxin transporters and signaling factors that control shoot gravitropism and tiller angle. High-throughput mRNA sequencing is performed to elucidate the molecular and cellular functions of BTA1/LA1. The results show that BTA1/LA1 may have multiple functions in regulating nucleosome and chromatin assembly, and protein and DNA interactions. Our results provide new insight into the mechanisms whereby BTA1/LA1 controls shoot gravitropism and tiller angle in rice.

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Enhanced sucrose loading improves rice yield by increasing grain size

Project description:Transgenic rice plants expressing the Arabidopsis phloem-specific sucrose transporter AtSUC2, which loads Suc into the phloem, showed an increase in grain yield of up to 16% relative to wild-type plants in field trials. The goal was to reveal how expressed AtSUC2 in rice leads to increased grain yield analyzing global gene expression.

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Project description:Rice grain yield is predicted to decrease in the future because of an increase in tropospheric ozone concentration. However, the underlying mechanisms are unclear. Here, we investigated the responses to ozone of two rice (Oryza Sativa L.) cultivars, Sasanishiki and Habataki. Sasanishiki showed ozone-induced leaf injury, but no grain yield loss. By contrast, Habataki showed grain yield loss with minimal leaf injury. A QTL associated with grain yield loss caused by ozone was identified in Sasanishiki/Habataki chromosome segment substitution lines and included the ABERRANT PANICLE ORGANIZATION 1 (APO1) gene. The Habataki allele of the APO1 locus in a near-isogenic line also resulted in grain yield loss upon ozone exposure, suggesting APO1 involvement in ozone-induced yield loss. Only a few differences in the APO1 amino acid sequences were detected between the cultivars, but the APO1 transcript level was oppositely regulated by ozone exposure: i.e., it increased in Sasanishiki and decreased in Habataki. Interestingly, the levels of some phytohormones (jasmonic acid, jasmonoyl-L-isoleucine, and abscisic acid) known to be involved in attenuation of ozone-induced leaf injury tended to decrease in Sasanishiki but to increase in Habataki upon ozone exposure. These data indicate that ozone-induced grain yield loss in Habataki is caused by a reduction in the APO1 transcript level through an increase in the levels of phytohormones that reduce leaf damage.

2015-01-31 | GSE65465 | GEO

Suppressing a phosphohydrolase of cytokinin nucleotide enhances grain yield in rice

Project description:One-step and two-step pathways are proposed to synthesize cytokinin. One-step pathway is mediated by LONELY GUY (LOG) proteins. However, the enzyme for two-step pathway has not been identified yet. Here, we show that a QTL GY3 boosts grain yield by more than 20% via manipulating two-step pathway. GY3 encodes a LOG protein that acts as a 5’-ribonucleotide phosphohydrolase by excessive consuming the cytokinin precursors, which contrasts with the activity of canonical LOG members as phosphoribohydrolases in a one-step pathway. The residue S41 of GY3 is crucial for the dephosphorylation of iPRMP. A solo-LTR insertion within the promoter of GY3 suppressed its expression and resulted in a higher content of active cytokinins in young panicles. Introgression of GY302428 increased grain yield per plot by 7.4% to 16.3% in all investigated indica backgrounds both under long-day and short-day conditions, which demonstrates the great value of GY302428 in indica rice production.

2023-05-05 | GSE231360 | GEO

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