Phloridzin transformation and accumulation during the stratification of apple seeds and the culture of isolated embryos

Bogatek, Renata; Podstolski, Andrzej; Ostaszewska, Anna; Lewak, Stanisław

doi:10.1007/bf02922366

Cited by 8 publications

(4 citation statements)

References 11 publications

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“…It amounts up to 8% of dry matter and in dormant seeds is located, together with condensed tannins, in the seed coat mainly (Dziewanowska et al 1974). Its level in the integument decreased to trace amounts during the first 20 days of stratification (Pienią _ zek and Grochowska 1967; Bogatek et al 1976), whereas in embryos it started to increase sharply on day 20 and reached a maximum at the end of stratification (day 80). In addition to phloridzin, chlorogenic acid, and hydroxylated cinnamic acids were identified, mostly in the coat (Durkee and Poapst 1965).…”

Section: Phenolicsmentioning

confidence: 99%

Metabolic control of embryonic dormancy in apple seed: seven decades of research

Lewak

2010

Acta Physiol Plant

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Embryonic dormancy is defined as a set of blocks imposed upon a process(es) cardinal for growth. In apple seeds, all these blocks are removed as a result of cold treatment (stratification), but some of them are also affected by light and/or hormonal treatments. This review summarizes published data related to the modes of action of above factors on the changes in the levels of endogenous hormones and some other plant growth regulators (e.g., hydrogen cyanide), and on certain enzymes involved in mobilization of seed reserves and catabolism of their hydrolysis products. Phytochrome and activities of acid lipase and a protease have been indicated as receptors of light and low temperature, respectively. Several chains of events initiated by these two environmental factors and leading to dormancy removal are proposed, and the sites of their control by hormones and HCN are indicated. These chains are postulated to contribute to the elimination of particular blocks that hinder germination and therefore to be involved in the mechanisms of dormancy breakage.

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Section: Phenolicsmentioning

confidence: 99%

Metabolic control of embryonic dormancy in apple seed: seven decades of research

Lewak

2010

Acta Physiol Plant

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“…However, in the cotyledons of the former, photosynthetic light reactions are controlled by a factor acting as an energy transfer inhibitor and their potential activity is only partially released. As reported [3], the embryo tissues from stratified seeds are characterized by a much higher content of phloridzin than those from non-stratified ones. Thus, phloridzin may be considered as this transfer energy inhibitor in the apple embryos.…”

Section: Resultsmentioning

confidence: 53%

The development of photosynthetic light reactions in cultured apple embryos in relation to their embryonal dormancy

1981

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“…It amounts up to 8% of dry matter and in dormant seeds is located, together with condensed tannins, in the seed coat mainly [56]. Its level in the integument decreased to trace amounts during the first 20 days of stratification [57]. The huge concentration of phenolics in the coat has been postulated to play a role in maintaining the dormancy of the embryo [58].…”

Section: Discussionmentioning

confidence: 99%

The Control of Apricot Seed Dormancy and Germination by Low Temperature Treatments

El-Yazal

Ei-Yazal

2021

Innovare J Ag Sci

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Objective: Freshly harvested seeds of “Local” apricot variety were found to be dormant and did not germinate at all. A specific low-temperature stratification treatment was required to overcome seed dormancy. The most effective temperature for breaking seed dormancy, germination, and seedling growth was 5°C cold stratification (CS). Increased seed germination percentage was recorded when the period of stratification prolonged. Seedling developed from stratified seeds had better growth than those developed from non-stratified seeds. Methods: For stratification treatments, the seeds with removed endocarp were mixed with moistened sand. Afterward, they were subjected to a period of stratification at 5°C. Seeds were stratified in pots of 30 cm×40 cm. Stratified seeds were regularly irrigated once per week. To prevent the water loss during stratification upper surface of pots was covered by a sack. The following stratification was applied for apricot variety: CS for 0, 3, 6, 9, 12, and15 days in 1998 and 1999 years for “Local” variety. Results: Apricot seeds required a CS of about 15 days for “Local” variety to reach maximum germination and normal seedling growth. Moreover, when stratification period was prolonged, some of the chemical constituents of apricot seeds were increased and other was decreased. Therefore, it can be suggested that breaking of dormancy is coincided with several changes in different chemical constituents of seeds. Some of these materials increased (total, reducing and non-reducing sugars, total free amino acids, total indoles, and total and conjugated phenols) and other materials such as free phenols which decreased at seed germinations. Conclusion: The most effective temperature for breaking seed dormancy, germination, and seedling growth was 5°C CS. Increased seed germination percentage was recorded when the period of stratification prolonged. Seedling developed from stratified seeds had better growth than those developed from non-stratified seeds.

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Phloridzin transformation and accumulation during the stratification of apple seeds and the culture of isolated embryos

Cited by 8 publications

References 11 publications

Metabolic control of embryonic dormancy in apple seed: seven decades of research

Metabolic control of embryonic dormancy in apple seed: seven decades of research

The development of photosynthetic light reactions in cultured apple embryos in relation to their embryonal dormancy

The Control of Apricot Seed Dormancy and Germination by Low Temperature Treatments

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