Berbel Tornero, Ana

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Berbel Tornero
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Ana
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0000-0002-6446-0693
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2015 - 201912020 - 20221
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Subject: Inflorescence architecture ×

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Now showing 1 - 2 of 2
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    Publication
    Genetic control of inflorescence architecture in legumes
    (Frontiers Media, 2015-07-21) Benlloch, Reyes; Berbel Tornero, Ana; Ali, Latifeh; Gohari, Gholamreza; Millán, Teresa; Madueño Albi, Francisco; Instituto Universitario Mixto de Biología Molecular y Celular de Plantas; European Commission; Ministerio de Economía y Competitividad; Generalitat Valenciana; European Regional Development Fund; Ministry of Higher Education, Siria
    [EN] The architecture of the inflorescence, the shoot system that bears the flowers, is a main component of the huge diversity of forms found in flowering plants. Inflorescence architecture has also a strong impact on the production of fruits and seeds, and on crop management, two highly relevant agronomical traits. Elucidating the genetic networks that control inflorescence development, and how they vary between different species, is essential to understanding the evolution of plant form and to being able to breed key architectural traits in crop species. Inflorescence architecture depends on the identity and activity of the meristems in the inflorescence apex, which determines when flowers are formed, how many are produced and their relative position in the inflorescence axis. Arabidopsis thaliana, where the genetic control of inflorescence development is best known, has a simple inflorescence, where the primary inflorescence meristem directly produces the flowers, which are thus borne in the main inflorescence axis. In contrast, legumes represent a more complex inflorescence type, the compound inflorescence, where flowers are not directly borne in the main inflorescence axis but, instead, they are formed by secondary or higher order inflorescence meristems. Studies in model legumes such as pea (Pisum sativum) or Medicago truncatula have led to a rather good knowledge of the genetic control of the development of the legume compound inflorescence. In addition, the increasing availability of genetic and genomic tools for legumes is allowing to rapidly extending this knowledge to other grain legume crops. This review aims to describe the current knowledge of the genetic network controlling inflorescence development in legumes. It also discusses how the combination of this knowledge with the use of emerging genomic tools and resources may allow rapid advances in the breeding of grain legume crops.
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    Publication
    The SINGLE FLOWER (SFL) gene encodes a MYB transcription factor that regulates the number of flowers produced by the inflorescence of chickpea
    (Blackwell Publishing, 2022-05) Caballo, Cristina; Berbel Tornero, Ana; Ortega, Raúl; Gil, Juan; Millán, Teresa; Rubio, Josefa; Madueño Albi, Francisco; Instituto Universitario Mixto de Biología Molecular y Celular de Plantas; Generalitat Valenciana; Agencia Estatal de Investigación; European Regional Development Fund; Ministerio de Economía y Competitividad; Instituto Nacional de Investigaciones Agrarias
    [EN] Legumes usually have compound inflorescences, where flowers/pods develop from secondary inflorescences (I2), formed laterally at the primary inflorescence (I1). Number of flowers per I2, characteristic of each legume species, has important ecological and evolutionary relevance as it determines diversity in inflorescence architecture; moreover, it is also agronomically important for its potential impact on yield. Nevertheless, the genetic network controlling the number of flowers per I2 is virtually unknown. Chickpea (Cicer arietinum) typically produces one flower per I2 but single flower (sfl) mutants produce two (double-pod phenotype). We isolated the SFL gene by mapping the sfl-d mutation and identifying and characterising a second mutant allele. We analysed the effect of sfl on chickpea inflorescence ontogeny with scanning electron microscopy and studied the expression of SFL and meristem identity genes by RNA in situ hybridisation. We show that SFL corresponds to CaRAX1/2a, which codes a MYB transcription factor specifically expressed in the I2 meristem. Our findings reveal SFL as a central factor controlling chickpea inflorescence architecture, acting in the I2 meristem to regulate the length of the period for which it remains active, and therefore determining the number of floral meristems that it can produce.