The Influence of Abscisic Acid on the Gibberellin Content in Apple Seeds During Stratification

Rudnicki, Ryszard; Sińska, Irena; Lewak, Stanisław

doi:10.1007/bf02933183

Cited by 21 publications

(8 citation statements)

References 7 publications

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“…Ethylene synthesis is also stimulated by nitric oxide treatment of embryos, and inhibitors of ethylene synthesis reversed the NO-induced stimulation of germination (Gniazdowska et al 2007). ABA strongly inhibited accumulation of GA 4 during seed stratification as well as during the culture of isolated embryos (Rudnicki et al 1972); the effect was less pronounced for GA 7 . On the other hand, gibberellin treatment decreased the level of ABA in apple fruits (Wills et al 1976).…”

Section: Regulatory Complex Involved In Dormancy Removalmentioning

confidence: 91%

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: Regulatory Complex Involved In Dormancy Removalmentioning

confidence: 91%

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

Lewak

2010

Acta Physiol Plant

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“…Tucker (1976) showed that auxin synthesized in the apex may induce the formation of ABA. The inhibitory effects of ABA at high concentrations (Table 2) may have been accomplished through an effect on GA metabolism, and suppression of subsequent physiological processes, as has been suggested by Wright (1969) and Rudnicki et al (1972).…”

Section: > >mentioning

confidence: 86%

“…Thus, several studies have shown that ABA application can cause reductions in endogenous GA levels (Rudnicki et al, 1972), perhaps by inhibiting GA interconversion or biosynthesis per se (Wareing et al, 1969). It has been suggested that one general ef fect of ABA might be to increase the conversion of biologically active GAg into less active products (Nadeau et al, 1972).…”

Section: Auxins Have Been Implicated As Inhibitory Factors In Apical mentioning

confidence: 99%

The effect of hormones and chemical growth regulators on ear development and grain yield of nonprolific corn (Zea mays L.)

Khosravi

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“…3 and 4) indicate that ABA affects this pathway, most probably at the point controlled by GA3 (activation of lipase) where it would act as an antagonist of GAs. Another possibility is that ABA inhibits gibberellin biosynthesis as has been postulated for apple seeds submitted to stratification [16] and also for other material [ 171. JA does not seem to be implicated in the control of this pathway because there is no synergism with GA3 and light (Figs.…”

Section: Discussionmentioning

confidence: 99%

Interaction of jasmonic acid with some plant growth regulators in the control of apple (Malus domestica) embryo germination

Ranjan

Lewak

1994

Plant Growth Regul

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Embryos isolated from dormant apple seeds were treated with jasmonic acid (JA), gibberellin A3 (GA,), abscisic acid (ABA) and hydrogen cyanide in darkness and in light. The chemicals were present in the culture medium continuously and simultaneously or applied for 2 days and in different sequences. All treatments stimulated embryo germination except ABA, which was strongly inhibitory. Additive effects of JA with light and with GA3 on embryo germination were observed, whereas ABA interacted synergically with JA, HCN and light. ABA and GA3 were most effective when applied early during embryo incubation, but the late JA treatment was more stimulatory. It is concluded that JA does not act on the regulatory pathway that is initiated by light and which leads to embryo germination through gibberellin accumulation and alkaline lipase activation. ABA and HCN appear to be involved in the control of this pathway. JA and ABA may be involved in the control of alkaline lipase activity, independently of this regulatory chain.

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The Influence of Abscisic Acid on the Gibberellin Content in Apple Seeds During Stratification

Cited by 21 publications

References 7 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 effect of hormones and chemical growth regulators on ear development and grain yield of nonprolific corn (Zea mays L.)

Interaction of jasmonic acid with some plant growth regulators in the control of apple (Malus domestica) embryo germination

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