Expression of Arabidopsis APETALA1 in tomato reduces its vegetative cycle without affecting plant production

  1. Ellul, P. 4
  2. Angosto, T. 3
  3. García-Sogo, Begoña 4
  4. García-Hurtado, Noemí . 4
  5. Martín-Trillo, M. 12
  6. Salinas, M. 3
  7. Moreno, V. 4
  8. Lozano, R. 3
  9. Martínez-Zapater, J.M. 12
  1. 1 Centro Nacional de Biotecnología
    info

    Centro Nacional de Biotecnología

    Madrid, España

    ROR https://ror.org/015w4v032

  2. 2 Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria
    info

    Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria

    Madrid, España

    ROR https://ror.org/011q66e29

  3. 3 Universidad de Almería
    info

    Universidad de Almería

    Almería, España

    ROR https://ror.org/003d3xx08

  4. 4 Instituto de Biología Molecular y Celular de Plantas Primo Yufera
    info

    Instituto de Biología Molecular y Celular de Plantas Primo Yufera

    Valencia, España

    ROR https://ror.org/04zdays56

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Revista:
Molecular Breeding

ISSN: 1380-3743

Año de publicación: 2004

Volumen: 13

Número: 2

Páginas: 155-163

Tipo: Artículo

DOI: 10.1023/B:MOLB.0000018763.64585.6B SCOPUS: 2-s2.0-1842473607 GOOGLE SCHOLAR

Otras publicaciones en: Molecular Breeding

Repositorio institucional: lock_openAcceso abierto Editor

Resumen

Important agronomic traits such as fruit quality, harvesting efficiency or production largely depend on flowering time. We have analysed the effect of the overexpression of the Arabidopsis APETALA1 MADS-box gene on vegetative and reproductive growth of tomato. Constitutive expression of APETALA1 in tomato plants has major effects on the length of their growth cycle as well as on their growth habit. Transgenic tomato plants initiated flowering after the production of 6 vegetative nodes as compared to 11 nodes for the wild type plants. Most of tomato 35S:AP1 plants also showed determinate growth habit, similar to the phenotype of self pruning tomato mutants, as well as an initial reduction of their axillary growth. Moreover, development and fertility of flowers were not affected in plants expressing AP1. Consequently, fruit formation in transgenic plants grown under greenhouse conditions occurred normally, which permitted a similar fruit yield compared to control plants. Since traits conferred by AP1 expression are dominant, its expression in tomato breeding lines could provide advantages for the development of new hybrid varieties with shorter generation time, determinate growth, and reduced pruning requirements.