Time course effects on primary metabolism of potato (Solanum tuberosum) tuber tissue after mechanical impact

Strehmel, Nadine; Praeger, Ulrike; König, Claudia; Fehrle, Ines; Erban, Alexander; Geyer, Martin; Kopka, Joachim; Dongen, Joost T. van

doi:10.1016/j.postharvbio.2009.12.008

Cited by 34 publications

(22 citation statements)

References 19 publications

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“…The observed lack of correlation between low tyrosine content and resistance to bruising indicated that substrate level does not seem to be preliminary factor playing a main role in mechanism of bruising formation. This conclusion is in agreement with results of other studies (Mondy and Munshi 1993;Stevens and Davelaar 1997;Strehmel et al 2010).…”

Section: Discussionsupporting

confidence: 94%

“…The results of some earlier studies have indicated that tyrosine level is well correlated with enzymatic discoloration potential after tissue homogenization and after abrasive peeling (Dean et al 1993). On the other hand, no correlation between bruising and tyrosine level has been found in studies using impact method (Mondy and Munshi 1993;Stevens and Davelaar 1997;Strehmel et al 2010). Mondy and Munshi (1993) studied two potato cultivars, one resistant and one susceptible to bruising, have found that tyrosine level was not a limiting factor for bruising determination, since in the susceptible cultivar they observed a lower level of tyrosine.…”

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confidence: 99%

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Diploid Potato Hybrids as Sources of Resistance to Blackspot Bruising

Hara-Skrzypiec¹,

Jakuczun²

2013

Am. J. Potato Res.

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Resistance to bruising is an important quality trait of potato depending on multiple genetic and environmental factors. Thirty one interspecific diploid hybrids and two tetraploid standards were evaluated for resistance to bruising in 2 years. Diploids originated from crosses between wild and primitive Solanum species and dihaploids of S. tuberosum. Two-year mean values of bruising resistance of tested genotypes indicated significant variability of the trait. Analysis of variance showed significant effects of genotype, year and interaction between them on the trait. Broad-sense heritability of bruising resistance was estimated as moderately high, Hb=0.73. Content of L-tyrosine, the main substrate of discoloration reaction, was not significantly correlated with brusing in tested diploid hybrids. The clones, that were resistant to blackspot bruise, also combined quality traits and resistances to many pathogens. All these traits could be transferred together into tetraploid level in 4x×2x crosses via male 2n gametes produced by diploid hybrids.Resumen La Resistencia al daño mecánico es un carácter importante en la calidad de la papa que depende de múlti-ples factores genéticos y del ambiente. Se evaluaron 31 híbridos diploides interespecíficos y dos estándares tetraploides para resistencia a la magulladura en dos años. Los diploides se originaron de las cruzas entre especies silvestres y primitivas de Solanum y dihaploides de S. tuberosum. Los valores de las medias de dos años de resistencia al daño de los genotipos probados indicaron variabilidad significativa del carácter. El análisis de varianza mostró efectos significativos de genotipo, año e interacción entre ellos en el carácter. Heredabilidad, en un amplio sentido de resistencia al daño mecánico, se estimó como moderadamente alta, Hb=0.73. El contenido de L-tirosina, el principal sustrato de la reacción de oscurecimiento no estuvo correlacionado significativamente con el daño en los híbridos diploides probados. Los clones, que fueron resistentes a la mancha oscura, también combinaron los caracteres de calidad y resistencia a muchos patógenos. Todos estos caracteres pudieron transferirse juntos a nivel tetraploide en cruzas 4x × 2x vía gametos macho 2n producidos en híbridos diploides.

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Section: Discussionsupporting

confidence: 94%

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confidence: 99%

Diploid Potato Hybrids as Sources of Resistance to Blackspot Bruising

Hara-Skrzypiec¹,

Jakuczun²

2013

Am. J. Potato Res.

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“…When fruit impacted at high impact level, the possibility of bruise developing will greatly increased. Severity of damage depends on fruit physiological and biochemical properties, such as plant cell chemical oxidation reactions (Strehmel et al 2010). The mechanical stress which is provoked by mechanical impact induces cell wall and membrane rupture.…”

Section: Resultsmentioning

confidence: 99%

Bruise susceptibilities of kiwifruit as affected by impact and fruit properties

Ahmadi¹

2012

Res. Agric. Eng.

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Ahmadi E., 2012. Bruise susceptibilities of kiwifruit as affected by impact and fruit properties. Res. Agr. Eng., 58: 107-113.Kiwifruit bruise damage is a common postharvest disorder that substantially reduces fruit quality and marketability. Fruit bruise cause tissue softening and make them more susceptible to undesired agents such as diseases-inducing agents. Factors that affect kiwifruit bruise susceptibility such as impact properties and fruit properties were investigated. Two bruise prediction models were constructed for the damage susceptibility of kiwifruit (measured by absorbed energy) using multiple linear regression analyses. Kiwifruits were subjected to dynamic loading by means of a pendulum at three levels of impact. Significant effects of acoustic stiffness, temperature and the radius of curvature and some interactions on bruising were obtained at 5% probability level.

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“…Samples were centrifuged for 5 min at full speed, and 80 mL of the supernatant was transferred in GC vials. Gas chromatography-time of flight-mass spectrometry measurements of derivatized metabolites was done as described by Strehmel et al (2011).…”

Section: Measurements Of Metabolites By Gc-msmentioning

confidence: 99%

Systems Analysis of the Response of Photosynthesis, Metabolism, and Growth to an Increase in Irradiance in the Photosynthetic Model OrganismChlamydomonas reinhardtii

et al. 2014

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We investigated the systems response of metabolism and growth after an increase in irradiance in the nonsaturating range in the algal model Chlamydomonas reinhardtii. In a three-step process, photosynthesis and the levels of metabolites increased immediately, growth increased after 10 to 15 min, and transcript and protein abundance responded by 40 and 120 to 240 min, respectively. In the first phase, starch and metabolites provided a transient buffer for carbon until growth increased. This uncouples photosynthesis from growth in a fluctuating light environment. In the first and second phases, rising metabolite levels and increased polysome loading drove an increase in fluxes. Most Calvin-Benson cycle (CBC) enzymes were substrate-limited in vivo, and strikingly, many were present at higher concentrations than their substrates, explaining how rising metabolite levels stimulate CBC flux. Rubisco, fructose-1,6-biosphosphatase, and seduheptulose-1,7-bisphosphatase were close to substrate saturation in vivo, and flux was increased by posttranslational activation. In the third phase, changes in abundance of particular proteins, including increases in plastidial ATP synthase and some CBC enzymes, relieved potential bottlenecks and readjusted protein allocation between different processes. Despite reasonable overall agreement between changes in transcript and protein abundance (R 2 = 0.24), many proteins, including those in photosynthesis, changed independently of transcript abundance.

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Time course effects on primary metabolism of potato (Solanum tuberosum) tuber tissue after mechanical impact

Cited by 34 publications

References 19 publications

Diploid Potato Hybrids as Sources of Resistance to Blackspot Bruising

Diploid Potato Hybrids as Sources of Resistance to Blackspot Bruising

Bruise susceptibilities of kiwifruit as affected by impact and fruit properties

Systems Analysis of the Response of Photosynthesis, Metabolism, and Growth to an Increase in Irradiance in the Photosynthetic Model OrganismChlamydomonas reinhardtii

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