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Response of photomorphogenic tomato mutants to nutrient omissions

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Abstract

Light is a critical environmental factor that influences nutrient uptake, but understanding how light acts on nutrient uptake is still very elusive. To verify the role of opposite light responses in accumulation, nutrient use efficiency (UE) and growth, a tomato cultivar Micro-Tom (MT), the non-mutant high-pigment-1 (hp1, light exaggerated response) and the mutant aurea (au, phytochrome-deficient) were grown under hydroponic conditions with a complete nutrient solution (CS) or with the individual omission (–) of N, P, K, Ca and Mg. Our results showed that in -N, hp1 exhibited high NUE in the roots and increased root dry mass. In -P, MT compensated the lower accumulation of this nutrient with the increase in PUE and produced shoot dry mass equivalent to the other genotypes with higher PUE and less PUE. In -K, the higher shoot KUE of the au was evidenced by the higher shoot dry weight in relation to the MT. In -Ca, the shoot dry weight loss of hp1 was lower in relation to the other genotypes. In -Mg, hp1 had a low shoot and root MgUE. Finally, we highlighted the perspective of utilizing hp1 in breeding programs as a tool to stimulate root growth under N deprivation conditions, hp1 for poor Ca environments, and au for poor K environments.

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Acknowledgements

We are thankful to GENPLANT (Grupo de Estudos em Nutrição de Plantas da Unesp—Studies Group in Plant Nutrition of Unesp) and the Laboratory of Plant Physiology of the Department of Biology Applied to Agriculture of Unesp for providing the structure and materials for the development of the experiment.

Funding

This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brasil (CAPES)—Finance Code 001.

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Correspondence to Rogério Falleiros Carvalho.

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The authors declare that they have no conflict of interest.

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All data generated or analyzed during this study are included in this published article and in Supplementary Material 1.

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Communicated by M. Prasad.

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Barreto, R.F., dos Santos, L.C.N., de Mello Prado, R. et al. Response of photomorphogenic tomato mutants to nutrient omissions. Acta Physiol Plant 43, 105 (2021). https://doi.org/10.1007/s11738-021-03274-6

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  • DOI: https://doi.org/10.1007/s11738-021-03274-6

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