Polyamines and ethylene in the removal of embryonal dormancy in apple seeds

Sińska, Irena; Lewandowska, Urszula

doi:10.1111/j.1399-3054.1991.tb01713.x

Cited by 29 publications

(18 citation statements)

References 19 publications

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“…There are controversial reports on the effects of PAs on germination and seedling growth under both normal (Mirza and Bagni 1991;Sinska and Lewandowska 1991) and saline (Prakash and Prathapasenan 1988;Tıpırdamaz et al 1994;Chattopadhayay et al 2002) conditions. Some researchers have argued that PAs prevent germination ) even in normal conditions and some also have argued that they do not have any effect (Palavan-Ü nsal 1987).…”

Section: Discussionmentioning

confidence: 97%

Some morphological and anatomical observations during alleviation of salinity (NaCI) stress on seed germination and seedling growth of barley by polyamines

2007

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In this work, the effects of polyamine (cadaverine, putrescine, spermidine, spermine) pretreatments on the germination of barley seeds, seedling growth under saline (NaCI) conditions and on leaf anatomy of the seedlings grown for 20 days in pots with perlite containing different concentrations of NaCI prepared with Hoagland solutions following the germination period of 7 days were studied. The inhibitive effect of salt on seed germination and seedling growth was alleviated in varying degrees, and dramatically, by polyamine pretreatments at the levels of NaCI studied; particularly with lower levels of salt, the control seeds were able to germinate with great difficulty. Also, the successes of these pretreatments continued, even decreased, with higher levels of NaCI such that the control seeds showed no germination. On the other hand, on the various parameters of leaf anatomy of barley seedlings, interactions between pretreatments of polyamine and salinity, with some of these being statistically important, were observed.

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Section: Discussionmentioning

confidence: 97%

Some morphological and anatomical observations during alleviation of salinity (NaCI) stress on seed germination and seedling growth of barley by polyamines

2007

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“…Our earlier research on dormancy breaking and germination of Norway maple seeds showed that exogenous spermine stimulates these processes by activation elongation factor 1 (Twardowski and Szczotka 1989). Sifiska and Lewandowska (1991 ) demonstrated that germination of Malus domestica embryos is altered by the presence of PAs in the medium during stratification of the seeds. In beech seeds treated with exogenous PAs, stimulation of protein synthesis was observed.…”

Section: Discussionmentioning

confidence: 98%

Proteins and polyamines during dormancy breaking of European beech (Fagus sylvatica L.) seeds

2003

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The studies were carried out on Fagus svlvatica seeds during stratification and their germination. After imbibition beechnuts were subjected to cold (3 'C -temperature which breaks dormancy) or warm (15 C -temperature unable to break dormancy) stratification and alternatively were treated with polyamine synthesis inhibitors: canavanine and DFMO (difluoromethylornithine). After cold stratification in embryo axes we found (using 2-D electrophoresis) about 150 new proteins absent in dry seeds. Exogenous spermidine increased the protein synthesis, percent of germinated seeds and accelerated breaking of dormancy. In contrast, canavanine and DFMO decreased dynamic of protein synthesis, quantity of proteins probably synthesised de novo, and percent of germinated seeds. The maximum of polyamine content in embryo axes during cold stratification preceded such the maximum during warm stratification. Irrespective of the influence of PAs and inhi bitors of PA synthesis, the comparison of electrophoregrams and autoradiograms showed that different groups synthesised de novo appeared after different periods of cold stratification. Probably the part of this protein is associated with Fagus syh'atica seeds dormancy breaking.

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“…Exogenous PAs affected germination of isolated embryos in a way dependent on the type of polyamine, its concentration, and the state of the embryo dormancy. The effect of Put and Spd on the germination of apple seed was stimulatory, while that of Spm was inhibitory (Sińska and Lewandowska 1991). There is now conclusive evidence that PAs accumulate in plants and are involved in their protection against various environmental stresses (Bouchereau et al 1999;He et al 2002;Farooq et al 2009a).…”

Section: Introductionmentioning

confidence: 96%

Evaluating surface drying and re-drying for wheat seed priming with polyamines: effects on emergence, early seedling growth and starch metabolism

et al. 2011

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This study was conducted to investigate the benefits associated with re-drying after seed priming with polyamines. Wheat (cv. AS-2002) seeds were soaked in 10 and 20 mg L -1 aerated solutions of spermidine (Spd), putrescine (Put) and spermine (Spm), and distilled water (CK2) for 12 h at 28 ± 2°C. Untreated seeds (CK1) and priming in distilled water (CK2) were taken as control treatments. Seeds were primed in two sets: In one set, after each treatment, seeds were given three surface washings with distilled water and dried closer to original moisture; in the other, seeds were only surface dried and used immediately. Use of surface-dried seeds after priming was more effective since it reduced emergence time and synchronized the emergence. Moreover, final emergence, shoot and root length, seedling fresh and dry weight were also improved. Improved starch metabolism was considered possible reason of seed invigoration. All the seed treatments resulted in a lower electrical conductivity of seed leachates compared with control; however, there was more decrease in seeds re-dried after priming than the seeds surface dried after priming. Although the effect of all the polyamines was stimulatory, Spd was the more effective for most of the attributes studied. Nonetheless, Put was more effective for seedling fresh and dry weights. All the polyamines were more effective at lower concentrations except Spm, which improved the coefficient of uniformity of emergence at high concentration. To conclude, if immediate sowing is possible, use of surface-dried seeds after priming may be more effective; seed priming with 10 mg L -1 Spd was the most effective technique when surface dried.

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Polyamines and ethylene in the removal of embryonal dormancy in apple seeds

Cited by 29 publications

References 19 publications

Some morphological and anatomical observations during alleviation of salinity (NaCI) stress on seed germination and seedling growth of barley by polyamines

Some morphological and anatomical observations during alleviation of salinity (NaCI) stress on seed germination and seedling growth of barley by polyamines

Proteins and polyamines during dormancy breaking of European beech (Fagus sylvatica L.) seeds

Evaluating surface drying and re-drying for wheat seed priming with polyamines: effects on emergence, early seedling growth and starch metabolism

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