The roles and interactions of ethylene with gibberellins in the far-red enriched light-mediated growth of Solanum lycopersicum seedlings

Kurepin, Leonid V.; Yip, Wing Ho; Fan, Rong; Yeung, Edward C.; Reid, David M.

doi:10.1007/s10725-010-9465-x

Cited by 29 publications

(15 citation statements)

References 32 publications

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“…Tomato could be considered in the first group. These results agreed with Kurepin et al (2010) who found wild-type tomato seedlings responded to a low R:FR ratio with increased stem elongation. UVA and UVB can produce changes in reduction of stem length (Mark and Tevini, 1996).…”

Section: Resultssupporting

confidence: 92%

Changes in Endogenous Auxin Concentration in Cultivars of Tomato Seedlings under Artificial Light

Almansa¹,

Espín²,

Chica³

et al. 2011

horts

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In this work, we present the study of the behavior of 15 tomato cultivars under different grow lights to evaluate the quality of seedlings in the production system. The lamps used are: compact fluorescent, high-efficiency fluorescent, fluorescent, and pure blue light-emitting diodes (B-LEDs). The trial was carried out in a culture chamber with the temperature and relative humidity continuously controlled. Spectral radiation was measured at the canopy level. The following were quantified: fresh, dry biomass partitioning organs (leaves, stems, and roots), the total dry weight/total fresh weight relationship, shoot/root ratio, and indole acetic acid. We found high-efficiency fluorescent light treatment has a very interesting spectral quality for all cultivar applications as a result of it having the lowest photosynthetically active radiation (PAR):near infrared (NIR), blue:red (B:R), blue:far red (B:FR), and red:far red (R:FR) ratios; ‘Conquista’, ‘Velasco’, and ‘Lynna’ are cultivars that show sensitivity to special wavebands (ultraviolet, B, R, and FR). ‘Ikram’, ‘Saladar’, and ‘Delizia’ tolerate the lack of minimum energy and spectral quality.

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Section: Resultssupporting

confidence: 92%

Changes in Endogenous Auxin Concentration in Cultivars of Tomato Seedlings under Artificial Light

Almansa¹,

Espín²,

Chica³

et al. 2011

horts

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show abstract

“…Plant growth retardants (synthetic chemicals that are capable of inhibiting GA biosynthesis) have been extensively studied and are successfully used for the manipulation of agronomic crops . The majority of these chemicals are used to reduce vegetative growth (without toxicity effects) while preserving crop yield . Growth retardant treatment can also increase seed yield in perennial ryegrass plants.…”

Section: Plant Hormonesmentioning

confidence: 99%

Evaluating the use of plant hormones and biostimulators in forage pastures to enhance shoot dry biomass production by perennial ryegrass (Lolium perenneL.)

et al. 2015

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Fertilisation of established perennial ryegrass forage pastures with nitrogen (N)-based fertilisers is currently the most common practice used on farms to increase pasture forage biomass yield. However, over-fertilisation can lead to undesired environmental impacts, including nitrate leaching into waterways and increased gaseous emissions of ammonia and nitrous oxide to the atmosphere. Additionally, there is growing interest from pastoral farmers to adopt methods for increasing pasture dry matter yield which use 'natural', environmentally safe plant growth stimulators, together with N-based fertilisers. Such plant growth stimulators include plant hormones and plant growth promotive microorganisms such as bacteria and fungi ('biostimulators', which may produce plant growth-inducing hormones), as well as extracts of seaweed (marine algae). This review presents examples and discusses current uses of plant hormones and biostimulators, applied alone or together with N-based fertilisers, to enhance shoot dry matter yield of forage pasture species, with an emphasis on perennial ryegrass.

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“…This may be another approach to explain the occurrence after disbudding. Also light, and especially the R:FR, affects ethylene production: through the circadian clock (Rikin et al, 1984;Finlayson et al, 1998;Jasoni et al, 2002;Dziubinska et al, 2003;Thain et al, 2004), by production (Finlayson et al, 1998(Finlayson et al, , 1999Kurepin et al, 2007Kurepin et al, , 2010Kurepin et al, , 2011, and by sensitivity (Pierik et al, 2004).…”

Section: Involvement Of Phytohormonesmentioning

confidence: 99%

Leaf Epinasty in Chrysanthemum: Enabling Breeding Against an Adverse Trait by Physiological Research

Geest¹,

Ieperen²,

Post³

et al. 2012

Acta Hortic.

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Breeding for a certain trait is only possible when the phenotypic variation that is caused by genotypic variation can be estimated. For traits that strongly depend on environmental conditions, this can be extremely difficult and knowledge and collaboration with experts from other disciplines becomes essential. A wellknown example is breeding for disease resistance. Here, we describe a similar approach to assist breeding against adverse leaf deformations that severely reduce the ornamental value of some chrysanthemum (Dendranthema × grandiflora) genotypes during greenhouse cultivation in winter. These leaf deformations occur rather unpredictably, but seem to be related to the increased use of assimilation light. To breed against this trait knowledge is needed (i) about inductive environments in which sensitive and insensitive genotypes are distinguishable, and (ii) about the physiological background associated with leaf epinasty. In this paper hypothetical physiological factors and mechanisms are discussed, which may mediate effects of light spectrum and greenhouse climate on leaf epinasty. One factor involved could be starch accumulation, since leaf epinasty usually aggravates after disbudding -a practice that most probably alters the sink-source balance. Additionally, light spectra can affect the circadian clock and thereby disturb starch synthesis and breakdown resulting in accumulation. Both within and independent of this process, plant hormones such as auxin and ethylene may play a role in leaf epinasty. This theoretical framework will be used to further investigate the physiological background of leaf epinasty and to come up with a test in which susceptibility for leaf epinasty can be assessed.

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The roles and interactions of ethylene with gibberellins in the far-red enriched light-mediated growth of Solanum lycopersicum seedlings

Cited by 29 publications

References 32 publications

Changes in Endogenous Auxin Concentration in Cultivars of Tomato Seedlings under Artificial Light

Changes in Endogenous Auxin Concentration in Cultivars of Tomato Seedlings under Artificial Light

Evaluating the use of plant hormones and biostimulators in forage pastures to enhance shoot dry biomass production by perennial ryegrass (Lolium perenneL.)

Leaf Epinasty in Chrysanthemum: Enabling Breeding Against an Adverse Trait by Physiological Research

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