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Long-term subculture affects rooting competence via changes in the hormones and protein profiles in Cedrela fissilis Vell. (Meliaceae) shoots

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Abstract

Long-term subculture plays an essential role in the large-scale multiplication and production of somatic plantlets. We investigated the effects of long-term subculture on in vitro shoot development and ex vitro rooting associated with changes in the hormones and protein profiles in Cedrela fissilis. The number of subcultures of shoots induced a decrease in the ex vitro rooting response. The reduction in adventitious root (AR) formation was associated with decreases in the contents of indole-3-acetic acid (IAA), abscisic acid (ABA), 12-oxo-phytodienoic acid (OPDA), putrescine (Put), and spermine and increases in jasmonic acid (JA), jasmonoyl-isoleucine, trans-cinnamic acid, and salicylic acid contents in shoots at the fourth subculture compared to the first. The ornithine decarboxylase enzyme preferentially functions in the Put biosynthesis pathway, and it was related to the highest AR formation in shoots at the first subculture. Down-accumulation of the auxin-binding protein ABP19a in shoots from the fourth subculture compared to the first subculture was related to a decrease in both the IAA content and AR formation. In addition, down-accumulation of glucose-6-phosphate isomerase; glutamine synthetase leaf isozyme, chloroplastic; 5-methyltetrahydropteroyltriglutamate-homocysteine methyltransferase; l-ascorbate peroxidase, cytosolic; monodehydroascorbate reductase; and 2-Cys peroxiredoxin BAS1-like, chloroplastic and up-accumulation of caffeoyl-CoA O-methyltransferase 1 and isoforms of peroxidase 4 proteins in shoots from the fourth relative to the first subculture were associated with a reduction in AR formation. These results showed that the understanding of hormonal and molecular mechanisms related to the potential of AR formation in shoots under successive subcultures is relevant to improving large-scale plantlet production in C. fissilis.

Key message

Long-term subculture affects the competence to ex vitro rooting of C. fissilis shoots by changes in endogenous hormones and protein profiles.

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Data availability

The mass spectrometry proteomics data have been deposited to the ProteomeXchange Consortium via the PRIDE partner repository with the dataset identifier PXD023173. The list of all identified proteins is available in the supplementary material.

Code availability

PXD023173.

Abbreviations

ABA:

Abscisic acid

ADC:

Arginine decarboxylase

ARs:

Adventitious roots

BA:

6-Benzyladenine

DAPs:

Differentially accumulated proteins

DM:

Dry matter

DTT:

Dithiothreitol

EDTA:

Ethylenediaminetetraacetic acid

FM:

Fresh matter

HPLC:

High-performance liquid chromatography

IAA:

Indole-3-acetic acid

JA:

Jasmonic acid

JA-Ile:

Jasmonoyl-isoleucine

MS:

Murashige and Skoog culture medium

ODC:

Ornithine decarboxylase

PAs:

Polyamines

Put:

Putrescine

SA:

Salicylic acid

Spd:

Spermidine

Spm:

Spermine

TCA:

Trichloroacetic acid

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Acknowledgements

Funding for this work was provided by the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) (444453/2014-8; 309,303/2019-2) and the Fundação Carlos Chagas Filho de Amparo à Pesquisa no Estado do Rio de Janeiro (FAPERJ) (E26/202.969/2016; E26/202.533/2019). This study was also funded by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES) – Finance Code 001. The plant hormone measurements were performed at SCIC from UJI and were supported by Grant UJI-B2019-11. TRO is thankful for the scholarship funding provided by FAPERJ and CAPES – Finance Code 001. VPMA acknowledges postdoctoral scholarship (E-26/202.295/2017) funding from FAPERJ. KRS acknowledge the scholarship funding from FAPERJ.

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Authors

Contributions

CSC and TRO conceived the study, designed the experiments, and wrote the manuscript. TRO was responsible for the in vitro culture experiments, PA analyses and statistical analyses. TRO, KRS and VS were responsible for the proteomic analyses. TRO, DB and AGC were responsible for the plant hormone analyses at SCIC from UJI – Spain. TRO, VPMA, LFO and EISF were responsible for the ADC and ODC enzyme analyses. All the authors read and approved the final manuscript.

Corresponding author

Correspondence to Claudete Santa-Catarina.

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The authors declare they have no financial interests.

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Communicated by Paloma Moncaleán.

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dos Reis de Oliveira, T., Balfagón, D., Sousa, K.R. et al. Long-term subculture affects rooting competence via changes in the hormones and protein profiles in Cedrela fissilis Vell. (Meliaceae) shoots. Plant Cell Tiss Organ Cult 148, 137–153 (2022). https://doi.org/10.1007/s11240-021-02172-6

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  • DOI: https://doi.org/10.1007/s11240-021-02172-6

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