OsSPL18 controls grain weight and grain number in rice

Yuan, Hua; Qin, Peng; Li, Hu; Zhan, Shijie; Wang, Shifu; Gao, Peng; Li, Jing; Jin, Mengya; Xu, Zhengyan; Gao, Qiang; Du, Anping; Tu, Bin; Chen, Weilan; Ma, Bo; Wang, Yuping; Li, Shigui

doi:10.1016/j.jgg.2019.01.003

Cited by 82 publications

(57 citation statements)

References 65 publications

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“…Length of panicle, as a part of rice panicle architecture, is an important agronomic trait of rice, which significantly affects the rice yield. Many genes related to diploid rice panicle architecture have been identified or cloned, such as OsSPL18 [33], IPA1 /OsSPL14 [34], Ghd7 [35], DEP1 [36], LP [37], Gn1a [38], GW8/ OsSPL16 [39], and SPL [40]. OsSPL18 had the same gene structure and expression pattern as that of GW8/ OsSPL16, and it regulates the expression level of DEP1 [33].…”

Section: Introductionmentioning

confidence: 99%

“…Many genes related to diploid rice panicle architecture have been identified or cloned, such as OsSPL18 [33], IPA1 /OsSPL14 [34], Ghd7 [35], DEP1 [36], LP [37], Gn1a [38], GW8/ OsSPL16 [39], and SPL [40]. OsSPL18 had the same gene structure and expression pattern as that of GW8/ OsSPL16, and it regulates the expression level of DEP1 [33]. IPA1/OsSPL14 is regulated by OsmiR156 [34], and DST enhanced grain production by controlling the expression patterns of Gn1a/OsCKX2 [41].…”

Section: Introductionmentioning

confidence: 99%

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Heterosis analysis and underlying molecular regulatory mechanism in a wide-compatible neo-tetraploid rice line with long panicles

et al. 2020

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Background: Neo-tetraploid rice, which is a new germplasm developed from autotetraploid rice, has a powerful biological and yield potential and could be used for commercial utilization. The length of panicle, as a part of rice panicle architecture, contributes greatly to high yield. However, little information about long panicle associated with heterosis or hybrid vigor is available in neo-tetraploid rice. Results: In the present study, we developed a neo-tetraploid rice line, Huaduo 8 (H8), with long panicles and harboring wide-compatibility genes for pollen and embryo sac fertility. All the hybrids generated by H8 produced significant high-parent yield heterosis and displayed long panicles similar to H8. RNA-seq analysis detected a total of 4013, 7050, 6787 and 6195 differentially expressed genes uniquely belonging to F 1 and specifically (DEGFu-sp) associated with leaf, sheath, main panicle axis and spikelet in the two hybrids, respectively. Of these DEGFu-sp, 279 and 89 genes were involved in kinase and synthase, and 714 cloned genes, such as GW8, OsGA20ox1, Ghd8, GW6a, and LP1, were identified and validated by qRT-PCR. A total of 2925 known QTLs intervals, with an average of 1~100 genes per interval, were detected in both hybrids. Of these, 109 yield-related QTLs were associated with seven important traits in rice. Moreover, 1393 non-additive DEGs, including 766 up-regulated and 627 down-regulated, were detected in both hybrids. Importantly, eight up-regulated genes associated with panicle were detected in young panicles of the two hybrids compared to their parents by qRT-PCR. Re-sequencing analysis depicted that LP (a gene controlling long panicle) sequence of H8 was different from many other neo-tetraploid rice and most of the diploid and autotetraploid lines. The qRT-PCR results showed that LP was up-regulated in the hybrid compared to its parents at very young stage of panicle development. Conclusions: These results suggested that H8 could overcome the intersubspecific autotetraploid hybrid rice sterility caused by embryo sac and pollen sterility loci. Notably, long panicles of H8 showed dominance phenomenon and played an important role in yield heterosis, which is a complex molecular mechanism. The neotetraploid rice is a useful germplasm to attain high yield of polyploid rice.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heterosis analysis and underlying molecular regulatory mechanism in a wide-compatible neo-tetraploid rice line with long panicles

et al. 2020

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“…Although diversi ed functions of SPL genes have been explained during different plant growth and developmental processes [16,19,[25][26][27]33]. There are only a few studies on SPL genes involved in stresses, such as, ectopic expression of BpSPL9 could enhance scavenging of ROS under salt and drought stresses in B. platyphylla Suk.…”

Section: Taspl Genes May Be Targets By Mir156mentioning

confidence: 99%

“…In rice, OsSPL13 promoted grain length and yield [27]. OsSPL18 regulated grain weight and grain number [33]. IPA1/OsSPL14 determined plant architecture by controlling the number of panicle branches and tillers [19].…”

Section: Introductionmentioning

confidence: 99%

Genome-wide analysis of structures and characteristics of the SPL gene family in wheat (Triticum aestivum L.)

Li¹,

Shi²,

Guan³

et al. 2020

Preprint

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Background: The SQUAMOSA-PROMOTER BINDING PROTEIN-LIKE (SPL) genes encode a family of plant-specific transcription factors that contain a conservative SBP domain. SPL proteins play important roles in plant growth and development, such as plant architecture, flowering regulation, and grain yield. However, the systematic analysis of TaSPL gene family in wheat is lacking.Results: In this study, 56 TaSPL genes were identified from wheat genome and divided into eight groups (G1-G8), according to the phylogenetic analysis of TaSPL proteins among numbers of plant species. Bioinformatics method were applied to analyse the gene structure, motif, chromosome localization, segmental duplication and synteny of total TaSPL genes and the results showed that their characteristics were different among group in the exon-intron constitution, conserved and specific motif. The expansion and evolution of the TaSPL genes occurred within the wheat genome. Total 28 of 56 TaSPL genes were predicted to be putative targets for miR156, which revealed the importance of miR156-mediated regulation in wheat. Moreover, transcript level analysis of TaSPL genes in wheat tissues by qRT-PCR discovered the diversified spatiotemporal expression patterns, based on the comparison with reference RNA-seq data. Some TaSPL genes were subject to various stress treatments including drought and hormones, etc. suggesting that these part genes probably involved in responding to hormone signals during different wheat development stages. Conclusions: Our findings show that TaSPL genes may regulate the development of spike and grain, resistance to abiotic stresses, and involve in responding to hormone signals. These results could provide a fundamentally information to further study of the functions of TaSPL genes in wheat growth and development.

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“…SPL16 positively regulates grain size via binding to GW7, which acts as a critical regulator in rice architecture and grain development (Wang et al, 2012;. SPL18 negatively regulates grain number through binding to the promoter of DEP1 that acts as an important regulator of panicle architecture (Huang et al, 2009;Taguchi-Shiobara et al, 2011;Yuan et al, 2019). SPL14 is also known as Ideal Plant Architecture 1 (IPA1), which plays a critical role in rice architecture and resistance to M. oryzae via phosphorylation status and subsequent DNA-binding specificity (Jiao et al, 2010;Wang et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Expressing a Target Mimic of miR156fhl-3p Enhances Rice Blast Disease Resistance Without Yield Penalty by Improving SPL14 Expression

Zhang

Zheng

et al. 2020

Front. Genet.

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OsSPL18 controls grain weight and grain number in rice

Cited by 82 publications

References 65 publications

Heterosis analysis and underlying molecular regulatory mechanism in a wide-compatible neo-tetraploid rice line with long panicles

Heterosis analysis and underlying molecular regulatory mechanism in a wide-compatible neo-tetraploid rice line with long panicles

Genome-wide analysis of structures and characteristics of the SPL gene family in wheat (Triticum aestivum L.)

Expressing a Target Mimic of miR156fhl-3p Enhances Rice Blast Disease Resistance Without Yield Penalty by Improving SPL14 Expression

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