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Enhanced expression of OsNAC5 leads to up-regulation of OsNAC6 and changes rice (Oryza sativa L.) ionome

Wairich, Andriele ; Vitali, Ariane ; Adamski, Janete Mariza ; Lopes, Karina Letícia ; Duarte, Guilherme Leitão ; Ponte, Lucas Roani ; Costa, Henrique Keller ; Menguer, Paloma Koprovski ; Santos, Rinaldo Pires Dos ; Fett, Janette Palma ; Sperotto, Raul Antonio ; Ricachenevsky, Felipe Klein

Genetics and molecular biology, 2023-01, Vol.46 (1 Suppl 1), p.e20220190-e20220190 [Revista revisada por pares]

Brazil: Sociedade Brasileira de Genética

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  • Título:
    Enhanced expression of OsNAC5 leads to up-regulation of OsNAC6 and changes rice (Oryza sativa L.) ionome
  • Autor: Wairich, Andriele ; Vitali, Ariane ; Adamski, Janete Mariza ; Lopes, Karina Letícia ; Duarte, Guilherme Leitão ; Ponte, Lucas Roani ; Costa, Henrique Keller ; Menguer, Paloma Koprovski ; Santos, Rinaldo Pires Dos ; Fett, Janette Palma ; Sperotto, Raul Antonio ; Ricachenevsky, Felipe Klein
  • Materias: BIOCHEMISTRY & MOLECULAR BIOLOGY ; GENETICS & HEREDITY ; iron ; NAC ; Oryza sativa ; Plant Molecular Genetics - Special Issue ; stress ; zinc
  • Es parte de: Genetics and molecular biology, 2023-01, Vol.46 (1 Suppl 1), p.e20220190-e20220190
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    Associate Editor: : Marcia Pinheiro Margis
    Author Contributions: JPF, RAS and FKR conceptualized the study. AW, AV, JMA, KLL, GLD, LRP, HKC, and PKM performed experiments and collected data. AW, JMA, RPS, RAS and FKR analyzed data. AW, JMA, RPS, RAS and FKR wrote the manuscript. All authors read and approved the final version of the manuscript.
    Conflict of Interest: The authors declare that there is no conflict of interest that could be perceived as prejudicial to the impartiality of the reported research.
  • Descripción: NAC transcription factors are plant-specific proteins involved in many processes during the plant life cycle and responses to biotic and abiotic stresses. Previous studies have shown that stress-induced OsNAC5 from rice (Oryza sativa L.) is up-regulated by senescence and might be involved in control of iron (Fe) and zinc (Zn) concentrations in rice seeds. Aiming a better understanding of the role of OsNAC5 in rice plants, we investigated a mutant line carrying a T-DNA insertion in the promoter of OsNAC5, which resulted in enhanced expression of the transcription factor. Plants with OsNAC5 enhanced expression were shorter at the seedling stage and had reduced yield at maturity. In addition, we evaluated the expression level of OsNAC6, which is co-expressed with OsNAC5, and found that enhanced expression of OsNAC5 leads to increased expression of OsNAC6, suggesting that OsNAC5 might regulate OsNAC6 expression. Ionomic analysis of leaves and seeds from the OsNAC5 enhanced expression line revealed lower Fe and Zn concentrations in leaves and higher Fe concentrations in seeds than in WT plants, further suggesting that OsNAC5 may be involved in regulating the ionome in rice plants. Our work shows that fine-tuning of transcription factors is key when aiming at crop improvement.
  • Editor: Brazil: Sociedade Brasileira de Genética
  • Idioma: Inglés;Portugués
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