Phytohormones in Shoots and Fruits of Tomato; Apoplast Solution and Seedless Fruit

Kojima, Kazunobu

doi:10.6090/jarq.39.77

Cited by 8 publications

(7 citation statements)

References 29 publications

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“…In the past it has been observed that ABA has a positive effect on dry matter deposition during seed and grain filling (Yang et al, 2006a,b). In addition, Kojima (2005) hypothesized that ABA stimulates phloem unloading in the placenta and promotes sink activity in the pericarp and locule tissue during the high growth rate phase. ABA thus might stimulate fruit growth through stimulation of cell expansion by increasing sink strength and dry matter deposition.…”

Section: Discussionmentioning

confidence: 99%

ABA-deficiency results in reduced plant and fruit size in tomato

Nitsch

Kohlen²,

Oplaat

et al. 2012

Journal of Plant Physiology

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Section: Discussionmentioning

confidence: 99%

ABA-deficiency results in reduced plant and fruit size in tomato

Nitsch

Kohlen²,

Oplaat

et al. 2012

Journal of Plant Physiology

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“…Se ha sugerido que en tomate (Solanum lycopersicon Mill., cv. Zuisyu), el ácido abscísico estimularía la descarga de asimilados en el fruto, lo que promueve la actividad vertedero en los primeros días de su crecimiento (Kojima, 2005), lo cual podría explicar el incremento en la masa fresca de los frutos de lulo en las FI y FII. De igual manera, las auxinas y giberelinas estarían implicadas en el crecimiento activo del fruto, ya que están relacionadas positivamente con el tamaño (Chitarra y Chitarra, 2005).…”

Section: Masa Frescaunclassified

Propiedades fisicoquímicas durante el crecimiento y desarrollo de frutos de lulo (Solanum quitoense Lam.)

Almanza-Merchán¹,

Velandia²,

Tovar³

2016

Rev. Colomb. Cienc. Hortic.

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RESUMENEl lulo (Solanum quitoense Lam.) se ha considerado frutal promisorio y especie potencial para mercados globales, constituyéndose en un renglón importante para la economía del departamento de Boyacá (Colombia). La presente investigación buscó realizar una caracterización fisicoquímica de los frutos de dos variedades de lulo (Chonto grueso y Criollo) durante su crecimiento y desarrollo, procedentes del municipio de Pachavita, Boyacá. Para ello se tomaron frutos cada 10 días, a partir de los 30 días después de antesis (dda). Se evaluó la masa fresca, acidez total titulable (ATT), sólidos solubles totales (SST), firmeza y tasa respiratoria (TR). Se encontró que los frutos de las dos variedades presentaron un crecimiento tipo sigmoide simple que se ajustó a un modelo de crecimiento logístico, apreciándose tres fases de crecimiento que se describieron como: Fase I de división celular; Fase II de elongación celular; y Fase III de maduración. Las propiedades químicas se ajustaron a modelos polinómicos, donde la ATT y los SST aumentaron progresivamente, mientras que la TR se redujo siguiendo las características propias de los frutos de lulo, logrando la calidad organoléptica requerida para el consumo.Palabras clave adicionales: fenología, solanaceae, días después de antesis, tasa respiratoria.

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“…This could be due to the limited development of radially-oriented vascular tissues in kiwifruit (Ferguson 1984). A similar radial gradient was observed in tomato fruits, where IAA was more abundant in the core region than in the peripheral one (Kojima 2005). Free-IAA concentration declined in all portions as fruit developed.…”

Section: Discussionmentioning

confidence: 57%

“…that weaken the main driver of Ca supply (Montanaro and others 2010). Based on the evidence that the amount of free IAA of the fruit sap may be partly exported from the fruit (Kojima, 2005), some information could be inferred from our data. The time course of the apoplastic IAA appears to be related to that of the inner pericarp, which should be expected if the seeds are to be considered a major auxin source.…”

Section: Discussionmentioning

confidence: 91%

Indole-3-acetic acid metabolism and growth in young kiwifruit berry

et al. 2017

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The patterns of auxin concentration and metabolism were investigated in distinct kiwifruit portions and compared with the rate of fruit growth during early developmental stages. Indole-3-acetic acid (IAA) level was higher in inner fruit tissues, particularly in younger fruit, while the hormone was barely detectable in outer tissues. Modulation of free IAA concentration did not appear to depend tightly on conjugation of the hormone. Despite the lack of a strong correlation between the levels of IAA and enzymes involved in its catabolism, in some portions of the fruit a low hormone level corresponded to a higher IAA degradation activity. An inverse correlation was also observed between hormone levels and the appearance/increase in some bands with high mobility in peroxidase gel activity assay. Phenols, compounds with a potential auxin-protecting activity, appeared to be involved mostly in photoprotection of the fruit than in the regulation of IAA levels. Beyond catabolism and conjugation, other metabolic pathways, particularly those occurring in the developing seeds, may have decisively influenced auxin levels in fruit tissues, as well as the amount of the hormone exported from the fruit. The latter, estimated by analyzing the concentration of IAA in the sap exuded from the pedicel, showed a time course which was similar to that displayed by inner fruit tissues. Furthermore, similarities were found between the pattern of IAA concentration in inner fruit tissues and fruit growth rate. The possible role of IAA in promoting growth during early fruit development is discussed

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Phytohormones in Shoots and Fruits of Tomato; Apoplast Solution and Seedless Fruit

Cited by 8 publications

References 29 publications

ABA-deficiency results in reduced plant and fruit size in tomato

ABA-deficiency results in reduced plant and fruit size in tomato

Propiedades fisicoquímicas durante el crecimiento y desarrollo de frutos de lulo (Solanum quitoense Lam.)

Indole-3-acetic acid metabolism and growth in young kiwifruit berry

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