Mobile TERMINAL FLOWER1 determines seed size in Arabidopsis

Zhang, Bin; Li, Chengxiang; Li, Yan; Yu, Hao

doi:10.1038/s41477-020-0749-5

Cited by 70 publications

(75 citation statements)

References 43 publications

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“…[ 120 ] TFL1 is localized both in the cytoplasm and in the nucleus in tobacco epidermal cells, whereas tissue fractionation and confocal microscopy analyses in Arabidopsis show that TFL1 is mainly localized in the cytoplasm. [ 21,115,158 ] TFL1 is also associated with endomembrane compartments, colocalizing with a putative δ‐subunit of the AP‐3 adapter complex, [ 159 ] and plays a role in protein trafficking to the protein storage vacuole. [ 159 ] In the shoot apex, TFL1 moves only toward the peripheral region of SAMs from the central region, suggesting that some regulatory mechanisms control the direction of TFL1 trafficking in shoot apices.…”

Section: Regulation and Coordination Of The Trafficking Of Ft And Tfl1mentioning

confidence: 99%

“…TFL1 protein then moves to the SPE. [ 158 ] Localization of TFL1 within the SPE is essential for the timely cellularization of the endosperm and control of seed size. CPE, cellularized peripheral endosperm; CV, central vacuole; EM, embryo.…”

Section: Regulation and Coordination Of The Trafficking Of Ft And Tfl1mentioning

confidence: 99%

“…A recent study has revealed that TFL1 functions as a mobile signal to determine the seed size in Arabidopsis . [ 158 ] In developing seeds, TFL1 is generated in the chalazal endosperm (CZE) and then moves to the syncytial peripheral endosperm (SPE) (Figure 6b), thus mediating seed size by regulating the appropriate timing of endosperm cellularization in Arabidopsis . [ 158 ] Trafficking of TFL1 from the CZE to the SPE is regulated by a group of small GTP‐binding Ras‐related nuclear (RAN) proteins (Table 3).…”

Section: Regulation and Coordination Of The Trafficking Of Ft And Tfl1mentioning

confidence: 99%

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Regulation by FLOWERING LOCUS T and TERMINAL FLOWER 1 in Flowering Time and Plant Architecture

Xuan

Jiang

et al. 2021

Small Structures

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The conversion from vegetative to inflorescence shoot apical meristem is one of the key developmental switches in flowering plants. This transition is modulated by various environmental and endogenous stimuli and controlled by sophisticated regulatory networks. Regulation of flowering time and inflorescence architecture has a great impact on plant reproductive success and significantly influences plant biomass and fitness. FLOWERING LOCUS T (FT), a mobile protein identified as a major component of florigen, promotes the transition to flowering, whereas its homologous protein TERMINAL FLOWER 1 (TFL1) functions oppositely. Studies in various species reveal that FT and TFL1 play universal and multifaceted roles in a wide range of developmental processes in plants. Hence, modulations of FT/TFL1 and their regulatory pathways have a considerable impact on plant development and crop domestication. Herein, an overview of the molecular basis underlying the regulation of FT/TFL1 expression and modulation of their protein trafficking and the relevant mechanisms in flowering time control and meristem development is provided. Whenever applicable, their functional conservation and divergence in various plant species are also discussed.

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Section: Regulation and Coordination Of The Trafficking Of Ft And Tfl1mentioning

confidence: 99%

Section: Regulation and Coordination Of The Trafficking Of Ft And Tfl1mentioning

confidence: 99%

Section: Regulation and Coordination Of The Trafficking Of Ft And Tfl1mentioning

confidence: 99%

See 1 more Smart Citation

Regulation by FLOWERING LOCUS T and TERMINAL FLOWER 1 in Flowering Time and Plant Architecture

Xuan

Jiang

et al. 2021

Small Structures

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“…Interestingly, the genes involved in owering (TFLs, Tof12, PHYA) showed an upregulation-downregulation shift during the course, suggesting their expanded roles during seed development but have yet been explored. This nding was partially supported by a recent study where Arabidopsis TLF1 not only functioned as a shoot identity gene but also served as a signaling molecule that is essential in determining seed size, and loss-of-function mutant t 1-20 producing larger developing seeds than wild type by regulating endosperm cellularization [58]. The expression patterns for those DEGs during the seed development were illustrated in Fig.…”

Section: Genes Were Temporally Regulated Over the Seed Developmentmentioning

confidence: 53%

“…Recent studies indicated that expression for many of these seed-expressed genes were highly speci ed spatially in seeds, and the speci city represents the functional relevance. For example, a seed coat-specially expressed SWEET39 involved in sugar delivery from maternal plant to developing embryo [63], endosperm-speci c TFL1 involve in endosperm cellularization by which affects seed size [58], and endosperm-exclusive SWEET15 involved in seed development by regulating sugar delivery into developing embryo [12]. These studies suggested that many of the seed-speci c genes identi ed here (Table S2) can be prioritized for detailed investigations to gain more comprehensive understanding, such as YABBA, GA3OX1, NF-YB6, NF-YA9, FAD8, KAS I/III, SWEETs, OLEOSINs, AATs (amino acid transporters), and uncharacterized LEC1-LIKE (Glyma.07G268100, Glyma.17G005600) that serves as a key regulator of fatty acid biosynthesis in Arabidopsis [64].…”

Section: Degs Have Tissue-speci City In Expression and Exhibit Tissuementioning

confidence: 99%

Transcriptome Profiling Reveals Spatial-temporal Dynamics of Gene Expression Essential for Soybean Seed Development

Zhang

Yang

et al. 2020

Preprint

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Background: Seeds are the economic basis of oilseed crops, especially for soybean, thus far the most widely cultivated oilseed crop worldwide. Seed development is accompanied with a multitude of diverse cellular processes and revealing the underlying regulatory activities is critical for seed improvement. Results: Here, we profiled transcriptomes of developing seeds (20, 25, 30, 40 days after flowering) representing key points of seed development from early to full development. We identified a set of highly-abundant genes and highlighted the importance of these genes to support nutrient accumulation and transcriptional regulation in developing seeds. We identified 8,925 differentially expressed genes that exhibited temporal expression patterns over the course and had expression specificities in distinct tissues including seeds and non-seed tissues (roots, stems, leaves). Genes with specificities to non-seed tissues have tissue-specialized roles while remain relatively low transcript abundance in developing seeds, exhibiting their supportive roles spatially for seed development. Co-expression network analysis identified several under-explored genes in soybean that bridge tissue-specific gene modules. Conclusions: Our study provides a global view of gene activities and biological processes critical for seed formation in soybean and prioritizes a set of genes for further study. The results shed insight into the mechanism controlling seed development and storage reserves.

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The role of hybrid seed inviability in angiosperm speciation

Coughlan

2023

American J of Botany

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Understanding which reproductive barriers contribute to speciation is essential to understanding the diversity of life on earth. Several contemporary examples of strong hybrid seed inviability (HSI) between recently diverged species suggest that HSI may play a fundamental role in plant speciation. Yet, a broader synthesis of HSI is needed to clarify its role in diversification. Here, I review the incidence and evolution of HSI. Hybrid seed inviability is common and evolves rapidly, suggesting that it may play an important role early in speciation. The developmental mechanisms that underlie HSI involve similar developmental trajectories in endosperm, even between evolutionarily deeply diverged incidents of HSI. In hybrid endosperm, HSI is often accompanied by whole‐scale gene misexpression, including misexpression of imprinted genes which have a key role in endosperm development. I explore how an evolutionary perspective can clarify the repeated and rapid evolution of HSI. In particular, I evaluate the evidence for conflict between maternal and paternal interests in resource allocation to offspring (i.e., parental conflict). I highlight that parental conflict theory generates explicit predictions regarding the expected hybrid phenotypes and genes responsible for HSI. While much phenotypic evidence supports a role of parental conflict in the evolution of HSI, an understanding of the underlying molecular mechanisms of this barrier is essential to test parental conflict theory. Lastly, I explore what factors may influence the strength of parental conflict in natural plant populations as an explanation for why rates of HSI may differ between plant groups and the consequences of strong HSI in secondary contact.

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Mobile TERMINAL FLOWER1 determines seed size in Arabidopsis

Cited by 70 publications

References 43 publications

Regulation by FLOWERING LOCUS T and TERMINAL FLOWER 1 in Flowering Time and Plant Architecture

Regulation by FLOWERING LOCUS T and TERMINAL FLOWER 1 in Flowering Time and Plant Architecture

Transcriptome Profiling Reveals Spatial-temporal Dynamics of Gene Expression Essential for Soybean Seed Development

The role of hybrid seed inviability in angiosperm speciation

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