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Morphogenesis of in vitro strawberry leaf cultured under clinostat 2D condition

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Abstract

The combination of in vitro culture and simulated gravity under clinostat 2D conditions was first applied to strawberry (Fragaria × ananassa Duch.) leaf to evaluate in vitro morphogenesis, antioxidant enzyme activity and accumulation of endogenous hormones. The subsequent growth and runner formation of clinostat 2D generated-plantlets in the greenhouse as compared to those with plantlets in the in vitro culture condition (control) were also examined. The results showed that the leaf explants (0.5 cm × 0.5 cm) cultured under clinostat 2D gave 1-week shoot regeneration and the growth was higher than that under control condition after 3, 4 and 6 weeks of culture. In addition, in shoots generated from explants under clinostat 2D condition antioxidant enzyme activities affected results such as increasing ascorbate peroxidase (APX), catalase (CAT), 2,2-Diphenyl-1-picrylhydrazyl (DPPH) and reducing phenolic content compared with control conditions after 6 weeks of culture. The clinostat 2D derived-shoots showed higher levels of GA3, ABA, and KIN; meanwhile, the content of IAA, ZEA, SA and MEL showed opposite results compared to the control condition. In this study, the ratios between endogenous hormone groups were also different between the two conditions. The ratios of GA3/IAA and GA3/CYT (ZEA, KIN and 2iP) of clinostat 2D derived-shoots were 12 and 1.5 times higher, respectively, compared to those in the control condition. In contrast, the ratios of IAA/CYT and IAA/SA showed the opposite results (two times lower) after 6 weeks of culture. The growth of shoots and plantlets derived from both conditions showed no abnormalities. In addition, the 2D clinostat generated-plantlets resulted in acclimatization and runner formation that was better than in the control. The results of the study offer a promising new direction for combining in vitro culture and clinostat 2D conditions for plant breeding.

Key message

In vitro culture and clinostat 2D conditions were applied to study leaf morphogenesis and 3 clinostat 2D-derived subsequent growth strawberry plantlets 4 Morphogenesis of in vitro strawberry leaf cultured under clinostat 2D were compared to 5 those under in vitro culture 6 Subsequent growth and runner formation of clinostat 2D-derived plantlets grown in the 7 greenhouse.

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Abbreviations

2iP:

N6-isopentenyladenine

ABA :

Abscisic acid

APX :

Ascorbate peroxidase

CAT:

Catalase

CYT:

Cytokinines

DPPH:

2,2-Diphenyl-1-picrylhydrazyl

GA3 :

Gibberellin A3

HPLC:

High-performance liquid chromatography

IAA:

Indole-3-acetic acid

KIN:

Kinetin

MEL:

N-acetyl-5-methoxytryptamine/melatonin

MT:

6 -(3-hydroxybenzylamino) purine/ meta-topolin

SA :

Salicylic acid

ZEA :

Trans-zeatin.

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Acknowledgements

Le The Bien was funded by the PhD Scholarship Programme of Vingroup Innovation Foundation (VINIF), code [VINIF.2022.TS013]. The authors would like to thank Prof. Edward CT Yeung (Calgary University) for critical reading of the manuscript.

Funding

This study was supported by Vingroup Innovation Foundation (VINIF) (Grant No. VINIF.2022.TS013).

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Authors

Contributions

LTB and HTT acquired data and wrote the manuscript. NTNM, THP, DMC, HDK, VQL, NBN, TTHT, BVTV participated in performing the experiments, interpretation of data and revision for intellectual content. DTN and HTT conceptualized and designed the study. All authors discussed the results and contributed to the final manuscript.

Corresponding authors

Correspondence to Hoang Thanh Tung or Duong Tan Nhut.

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The authors declare that they have no conflicts of interest.

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This article does not contain any studies with human participants or animals performed by any of the authors.

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Communicated by Maurizio Lambardi.

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Bien, L.T., Tung, H.T., Mai, N.T.N. et al. Morphogenesis of in vitro strawberry leaf cultured under clinostat 2D condition. Plant Cell Tiss Organ Cult 153, 499–510 (2023). https://doi.org/10.1007/s11240-023-02484-9

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  • DOI: https://doi.org/10.1007/s11240-023-02484-9

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