The effect of ethylene and of inhibitors of protein and nucleic acid syntheses on dormancy break and subsequent sprout growth

Alam, Shamsher; Murr, Dennis P.; Kristof, L.

doi:10.1007/bf02360429

Cited by 19 publications

(14 citation statements)

References 21 publications

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“…More detailed studies by Rylski et al (1974) demonstrated that brief (3 day) ethylene treatment (0.2-20 µL L −1 ) hastened sprouting of fieldgrown Russet Burbank tubers while continuous fumigation suppressed sprout elongation. Alam et al (1994) also found that a 24-hour ethylene treatment (100 µL L −1 ) stimulated sprout growth in plugs excised from field-grown Russet Burbank tubers. The discrepancies between the present findings and those of Rylski and Alam may relate to the physiological age of the tubers used.…”

Section: Discussionmentioning

confidence: 92%

Ethylene Is Not Involved in Hormone- and Bromoethane-Induced Dormancy Break in Russet Burbank Minitubers

Suttle

2009

Am. J. Pot Res

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The involvement of ethylene in the dormancy breaking actions of cytokinins, GA, and BE was investigated using Russet Burbank minitubers. Injection of 10µg tuber −1 BA, CP, GA, NG, or ZEA or 24 hour exposure to BE effectively broke dormancy and stimulated sprout growth over a two-week period. Although ethylene production was slightly enhanced by all treatments, a significant increase in ethylene production was observed in minitubers treated with BE, CP, or NG. Pretreatment with the ethylene antagonists STS or MCP did not affect the dormancy breaking actions of any of the agents tested. Application of the ethylene synthesis inhibitor AVG to NG-treated minitubers, completely suppressed ethylene production but had no effect on dormancy break. Application of exogenous ethylene or stimulation of endogenous ethylene production by ACC treatment did not break minituber dormancy or stimulate sprout growth. Collectively, these results indicate that endogenous ethylene does not play a role in the dormancy breaking actions of cytokinins, GA, or BE.Resumen La participación del etileno en la acción de las citoquininas GA y BE en la salida de la dormancia fue investigada utilizando minitubérculos Russet Burbank. La inyección de 10 ug tubérculo −1 BA, CP, GA, NG o ZEA o la exposición por 24 horas a BE rompió efectivamente la dormancia y estimuló el crecimiento de brotes en un periodo de 2 semanas. Aunque la producción de etileno fue ligeramente mejorada por todos los tratamientos, se observó un aumento significativo en la producción de etileno en minitubérculos tratados con BE, CP o NG. El tratamiento previo con antagonistas de etileno STS o MCP no afectaron las acciones de salida de la dormancia de ninguno de los agentes probados. La aplicación del AVG, un inhibidor de la síntesis del etileno, a minitubérculos tratados con NG, suprimió completamente la producción de etileno pero no tuvo efecto sobre la interrupción de la dormancia. La aplicación de etileno exógeno o la estimulación de la producción de etileno endógeno mediante tratamiento de ACC no interrumpió la dormancia de los mini tubérculos ni estimuló el crecimiento de brotes. Colectivamente, estos resultados indican que el etileno endógeno no juega ningún rol en las acciones de las citoquininas GA o BE en la salida de la dormancia.

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Section: Discussionmentioning

confidence: 92%

Ethylene Is Not Involved in Hormone- and Bromoethane-Induced Dormancy Break in Russet Burbank Minitubers

Suttle

2009

Am. J. Pot Res

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“…, 1978). Also, initiation of sprouting in potato tubers requires incremented protein synthesis, while nucleic acid synthesis is necessary for sprout elongation but not for dormancy breaking (Madison & Rappaport, 1968; Alam et al. , 1994).…”

Section: Resultsmentioning

confidence: 99%

“…As potato tubers' dormancy breaks and sprouting begins, synthesis of proteins and nucleic acids (Macdonald & Osborne, 1988) and reduction in sugar content increase (Bailey et al, 1978). Also, initiation of sprouting in potato tubers requires incremented protein synthesis, while nucleic acid synthesis is necessary for sprout elongation but not for dormancy breaking (Madison & Rappaport, 1968;Alam et al, 1994).…”

Section: Resultsmentioning

confidence: 99%

Inhibition of potato tuber sprouting by pressure treatments

Saraiva

Rodrigues

2010

International Journal of Food Science &Amp; Technology

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In this study, we found that pressure treatments of 100 MPa applied for 5 and 10 min inhibited the sprouting of potato tubers that were stored for 3 months before the pressure treatments, for at least 6 weeks at 18°C. Less intense pressure treatments of 30 and 50 MPa for 5 and 10 min did not inhibit sprouting, but hindered sprout development, evaluated by sprout length, elongation rate and mass. Pressure treatments caused a higher inhibition of sprouting, when applied to tubers after 5 months of storage, before the application of the pressure treatments. For these tubers, pressure treatments at 50 and 100 MPa for 5 and 10 min inhibited sprouting for at least 6 weeks at 18°C. For the same tubers, a pressure treatment at 30 MPa for 10 min already showed some inhibitory effect on sprouting and hindered sprout development. Pressure treatments show great potential to be used, as a nonthermal and chemical-free method, to control sprouting of potato tubers.

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“…The application of eCC produced ethylene which may have stimulated germination by triggering the respiration rate as, in general, many cellular processes such as respiration are suppressed during dormancy (muromtsev et al 1991; bibik et al 1995). maximum tuber sprouting percentage was observed and it may be because eCC broke the dormancy of tubers and also reduced the production of growth inhibiting hormone abscisic acid (AbA) (el-Antably et al 1967;Alam et al 1994). it has been reported that short-term ethylene treatment can prematurely terminate tuber dormancy whereas continuous treatment results in delay in sprout growth inhibition (Rylski et al 1974).…”

Section: Pre-harvest Effects Of Ecc Number Of Days Required For Seed mentioning

confidence: 99%

Encapsulated calcium carbide enhances production and postharvest performance of potato (Solarium tuberosum) tubers

Abbasi¹,

Hussain

Maqbool

et al. 2009

New Zealand Journal of Crop and Horticultural Science

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The effect of encapsulated calcium carbide (CaC 2 ; ECC at 30, 60, 90, and 120 kg ha -1 ) on pre-harvest production and postharvest performance of potato (Solanum tuberosum) hybrid variety 'Sante' was studied. The ECC was applied twice in the root zone at the time of sowing and 2 weeks after sowing. The data on the parametersnumber of days required for sprouting; sprouting percentage; plant height; number of leaves per plant; leaf area; photosynthesis rate; number of stems per plant; number, size, and weight of tubers; yield; weight loss; shriveling percentage; and sprout percentage were recorded. The results indicated that the number of days required for sprouting of tubers and plant height was reduced significantly by the application of ECC compared with the control. Furthermore, ECC at 60 kg ha -1 significantly reduced the number of days required for sprouting and plant height compared with other treatments. Sprouting percentage, number of leaves per plant, leaf area, photosynthesis rate, and number of stems per plant significantly increased by the application of ECC at 60 and 90 kg ha -1 . Weight, size of tubers, and overall yield of tubers was also increased significantly with the application of ECC at 60 kg ha -1 . In conclusion, the application of CaC 2 at 60 kg ha -1 in the root zone increased vegetative growth, total weight, number of large tubers, and increased total yield (40-50%).

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The effect of ethylene and of inhibitors of protein and nucleic acid syntheses on dormancy break and subsequent sprout growth

Cited by 19 publications

References 21 publications

Ethylene Is Not Involved in Hormone- and Bromoethane-Induced Dormancy Break in Russet Burbank Minitubers

Ethylene Is Not Involved in Hormone- and Bromoethane-Induced Dormancy Break in Russet Burbank Minitubers

Inhibition of potato tuber sprouting by pressure treatments

Encapsulated calcium carbide enhances production and postharvest performance of potato (Solarium tuberosum) tubers

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