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This is accepted manuscript by the journal but prior to copy-editing or proofing. It can be cited using the author(s), article title, journal title, year of online publication, and DOI. It will be replaced by the final typeset version, which may therefore contain changes. The DOI will be remain the same.

ARTICLE   Open Access    

Fine mapping of QTL-fl3.1 reveal SmeFL as the candidate gene regulating fruit length in eggplant (Solanum melongena L.)

  • 1.

    Institute of Vegetable, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China

  • 2.

    Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China

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  • Eggplant (Solanum melongena L.) is an important vegetable crop with abundant variations in fruit morphology, making it a good model for studying fruit development. In this study, quantitative trait loci (QTL) sequencing (QTL-seq) was conducted on multiple F2 populations, successfully mapping the fruit length-related locus fl3.1 on eggplant chromosome 3 (E03). Fine mapping further narrowed down this region to 106.6 kb using a large population of 968 F2 plants. Within this region, a total of eight genes were identified, and Smechr0302217 (SmeFL) was determined to be the most likely candidate gene through validation using RNA-seq and qRT-PCR. Sequence analysis of the parental materials revealed 12 SNPs/InDels in Smechr0302217, potentially accounting for the fruit length differences. Combining these findings with further cytological and transcriptomic analyses, we propose that SmeFL regulates fruit length by promoting cell expansion in eggplant. The identification of SmeFL contributes to a better understanding of the role of microtubule-associated proteins in eggplant fruit development, as well as the mechanism underlying eggplant fruit elongation.

  • Cite this article

    Pang H, Ai J, Wang W, Hu T, Hu H, et al. 2024. Fine mapping of QTL-fl3.1 reveal SmeFL as the candidate gene regulating fruit length in eggplant (Solanum melongena L.). Vegetable Research doi: 10.48130/vegres-0024-0027
    Pang H, Ai J, Wang W, Hu T, Hu H, et al. 2024. Fine mapping of QTL-fl3.1 reveal SmeFL as the candidate gene regulating fruit length in eggplant (Solanum melongena L.). Vegetable Research doi: 10.48130/vegres-0024-0027
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Important Notice

This is accepted manuscript by the journal but prior to copy-editing or proofing. It can be cited using the author(s), article title, journal title, year of online publication, and DOI. It will be replaced by the final typeset version, which may therefore contain changes. The DOI will be remain the same.

ARTICLE   Open Access    

Fine mapping of QTL-fl3.1 reveal SmeFL as the candidate gene regulating fruit length in eggplant (Solanum melongena L.)

  • 1.

    Institute of Vegetable, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China

  • 2.

    Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China

  • Received Date: 20 April 2024
  • Accepted Date: 24 June 2024
    • First-online Date: 28 June 2024
Vegetable Research  Article in press  (2024)  |  Cite this article

Abstract: Eggplant (Solanum melongena L.) is an important vegetable crop with abundant variations in fruit morphology, making it a good model for studying fruit development. In this study, quantitative trait loci (QTL) sequencing (QTL-seq) was conducted on multiple F2 populations, successfully mapping the fruit length-related locus fl3.1 on eggplant chromosome 3 (E03). Fine mapping further narrowed down this region to 106.6 kb using a large population of 968 F2 plants. Within this region, a total of eight genes were identified, and Smechr0302217 (SmeFL) was determined to be the most likely candidate gene through validation using RNA-seq and qRT-PCR. Sequence analysis of the parental materials revealed 12 SNPs/InDels in Smechr0302217, potentially accounting for the fruit length differences. Combining these findings with further cytological and transcriptomic analyses, we propose that SmeFL regulates fruit length by promoting cell expansion in eggplant. The identification of SmeFL contributes to a better understanding of the role of microtubule-associated proteins in eggplant fruit development, as well as the mechanism underlying eggplant fruit elongation.

    Acknowledgments

    • This work was supported by the Zhejiang Provincial Natural Science Foundation of China (LY23C150003), Youth Program of National Natural Science Foundation of China (32002055), the New Variety Breeding Project of the Major Science Technology Projects of Zhejiang (2021C02065-1-3).

    Conflict of interest

    • The authors declare that they have no conflict of interest.

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    • Copyright: © 2024 by the author(s). Published by Maximum Academic Press, Fayetteville, GA. This article is an open access article distributed under Creative Commons Attribution License (CC BY 4.0), visit https://creativecommons.org/licenses/by/4.0/.
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    Pang H, Ai J, Wang W, Hu T, Hu H, et al. 2024. Fine mapping of QTL-fl3.1 reveal SmeFL as the candidate gene regulating fruit length in eggplant (Solanum melongena L.). Vegetable Research doi: 10.48130/vegres-0024-0027
    Pang H, Ai J, Wang W, Hu T, Hu H, et al. 2024. Fine mapping of QTL-fl3.1 reveal SmeFL as the candidate gene regulating fruit length in eggplant (Solanum melongena L.). Vegetable Research doi: 10.48130/vegres-0024-0027
    shu

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