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González, A.; Arigita, Luis; Majada, Juan; Tamés, Ricardo Sánchez

doi:10.1023/a:1005751017498

Cited by 32 publications

(8 citation statements)

References 27 publications

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“…root formation in Vicia faba L. shoots under in vitro conditions (Khalafalla and Hattori 2000). Root formation in Populus tremula L. was reported to be either inhibited or stimulated by ethylene depending on its concentrations within the culture vessels (Gonzalez et al 1997). Similarly to organogenesis, also somatic embryogenesis (SE), representing an important tool for the analysis of embryonic development outside the maternal environment, may be differently affected by ethylene accumulated in culture vessels (Moshkov et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Endogenous ethylene in indirect somatic embryogenesis of Medicago sativa L.

2009

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Ethylene biosynthesis during different phases of somatic embryogenesis in Medicago sativa L. cv. Rangelander using two regeneration protocols, RPI and RPII, was studied. The highest ethylene production was detected during callus growth on induction medium in both regeneration protocols. Significantly less ethylene was produced by embryogenic suspension than by callus (RPII). Developing embryos synthesized higher amounts of ethylene than mature embryos. Production of ethylene was strongly limited by the availability of 1-aminocyclopropane-1-carboxylic acid and also by ACC-oxidase activity. However, removal of ethylene from culture vessels' atmosphere using KMnO 4 or HgClO 4 had no significant effect on callus growth, somatic embryo induction and development. Reducing of ethylene biosynthesis by aminoethoxyvinylglycine substantially decreased somatic embryo production and adversely affected their development, indicating ethylene requirement during proliferation and differentiation but not induction.

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Section: Introductionmentioning

confidence: 99%

Endogenous ethylene in indirect somatic embryogenesis of Medicago sativa L.

2009

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“…The relationship between ethylene and the activation of many morphogenic processes, such as the formation and growth of lateral shoots, has already been demonstrated (González et al 1997). Ethylene signaling may favor organogenesis because it promotes differentiation or delimitation of cell fates (Chatfield and Raizada 2008).…”

Section: Discussionmentioning

confidence: 98%

“…An interaction between polyamines and ethylene requires further study in view of the capacity of the polyamines to capture free radicals, since, during ethylene biosynthesis, a superoxide radical is required for the action of the ACC oxidase (George 1993;Li et al 2004). Li et al (2004) observed in Glycyrrhiza inflata plants under stress that ethylene promoted diamine oxidase (DAO) and polyamine oxidase (PAO) activity, and ethylene and reactive oxygen species (ROS) exhibited a positive feedback of production.…”

Section: Discussionmentioning

confidence: 99%

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Ethylene and polyamine interactions in morphogenesis of Passiflora cincinnata: effects of ethylene biosynthesis and action modulators, as well as ethylene scavengers

et al. 2010

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Ethylene is a plant hormone that is of fundamental importance to in vitro morphogenesis, but in many species, it has not been thoroughly studied. Its relationship with polyamines has been studied mainly because the two classes of hormones share a common biosynthetic precursor, S-adenosylmethionine (SAM). In order to clarify whether competition between polyamines and ethylene influences in vitro morphogenetic responses of Passiflora cincinnata Mast., a climacteric species, different compounds were used that act on ethylene biosynthesis and action, or as ethylene scavengers. Treatment with the ethylene inhibitor, aminoethoxyvinylglycine (AVG) caused a greater regeneration frequency in P. cincinnata, whereas treatment with the ethylene precursor, 1-aminocyclopropane-1-carboxylic-acid (ACC) lessened regeneration frequencies. The data suggested that levels of polyamines and ethylene are not correlated with morphogenic responses in P. cincinnata. It was ascertained that neither the absolute ethylene and polyamine levels, nor competition between the compounds, correlated to the obtained morphogenic responses. However, sensitivity to, and signaling by, ethylene appears to play an important role in differentiation. This study reinforces previous reports regarding the requirement of critical concentrations and temporal regulation of ethylene levels for morphogenic responses. Temporal regulation also appeared to be a key factor in competition between the two biosynthetic pathways, without having any effects on morphogenesis. Further studies investigating the silencing or overexpression of genes related to ethylene perception, under the influence of polyamines in cell differentiation are extremely important for the complete understanding of this process.

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“…In poplar (Table 1), ethylene precursors, ACC (5 µM) and ETH (10 µM), positively affect regeneration and subsequent plant development and growth, in parameters such shoot elongation, induction and development of buds and also root formation per explant [100]. On the other hand, AVG treatments in a range of 10-15 µM negatively affected these parameters.…”

Section: Plant Speciesmentioning

confidence: 99%

Modulation of Organogenesis and Somatic Embryogenesis by Ethylene: An Overview

Neves¹,

Correia²,

Cavaleiro³

et al. 2021

Preprint

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Ethylene is a plant hormone controlling physiological and developmental processes such fruit maturation, hairy root formation and leaf abscission. Its effect on regeneration systems, such as organogenesis and somatic embryogenesis (SE), has been studied and progresses in molecular biology techniques have contributed to unveil mechanisms behind its effects. This compound affects regeneration differently, depending on the species, genotype and explant. In some species, ethylene seems to revert recalcitrance in genotypes with low regeneration capacity. However, its effect is not addictive, since in genotypes with high regeneration capacity this ability decreases in the presence of ethylene precursors, suggesting that regeneration is modulated by ethylene. Several lines of evidence have shown that the role of ethylene on regeneration is markedly connected to biotic and abiotic stresses as well as to hormonal-crosstalk, in particular with key regeneration hormones and growth regulators of the auxin and cytokinin families. Transcriptional factors of the ethylene response factor (ERF) family are regulated by ethylene and strongly connected to SE induction. Thus, an evident connection between ethylene, stress responses and regeneration capacity is markedly established. In this review the effect of ethylene and the way it interacts with other players during organogenesis and somatic embryogenesis is discussed.

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Cited by 32 publications

References 27 publications

Endogenous ethylene in indirect somatic embryogenesis of Medicago sativa L.

Endogenous ethylene in indirect somatic embryogenesis of Medicago sativa L.

Ethylene and polyamine interactions in morphogenesis of Passiflora cincinnata: effects of ethylene biosynthesis and action modulators, as well as ethylene scavengers

Modulation of Organogenesis and Somatic Embryogenesis by Ethylene: An Overview

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