Abscisic acid, phaseic acid and gibberellin contents associated with dormancy and germination in barley

Jacobsen, John V.; Pearce, David; Poole, Andrew T.; Pharis, Richard P.; Mander, Lewis N.

doi:10.1034/j.1399-3054.2002.1150313.x

Cited by 215 publications

(201 citation statements)

References 57 publications

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“…An increase in the level of the CYP707A2 transcript is correlated with a decrease in the amount of ABA and an increase in the level of phaseic acid (Saito et al 2004). An analogous effect has also been observed in Hordeum vulgare (Jacobsen et al 2002), Lactuca sativa (Gonai et al 2004) and Pinus strobus (Feurtado et al 2004). It can be supposed that similar mechanisms regulating the level of ABA with the use of light can occur in P. nil, as well.…”

Section: Discussionsupporting

confidence: 57%

Involvement of aba in flower induction of Pharbitis nil

et al. 2011

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Flowering of plants is controlled by hormones among which both stimulators and inhibitors are present. The role of abscisic acid (ABA) in flower induction of the short day plant Pharbitis nil was shown in our experiments through exogenous applications and endogenous level determination of the hormone in cotyledons of seedlings grown under special light conditions.The application of ABA to cotyledons or shoot apices during the first half of a 24-h long inductive night inhibits flowering. The same compound applied towards the end of or after a 14-h long subinductive night increases the number of flower buds produced by these plants.Exposing P. nil seedlings at the beginning of a 24-h long inductive night to far red light (FR) decreases the level of endogenous abscisic acid in cotyledons and leads to flower inhibition. However, a pulse of red light (R) reversing the inhibitory effect of far red light on the flowering of P. nil increases the ABA content.The results obtained confirm previous observations that ABA may play a dual and an important role in the regulation of floral bud formation in P. nil. The flowering occurs when the level of endogenous abscisic acid is low at the beginning and is high toward the end of the inductive night.

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Section: Discussionsupporting

confidence: 57%

Involvement of aba in flower induction of Pharbitis nil

et al. 2011

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“…Previous studies have shown that the depletion of endogenous NAE and ABA levels during germination might be a requisite for normal seedling development (Chapman et al, 1999;Jacobsen et al, 2002;Blancaflor et al, 2003;Nakabayashi et al, 2005;Wang et al, 2006). Indeed, seedling growth, measured as gain in fresh weight, was arrested by NAE12:0 in a manner similar to ABA ( Figure 1A).…”

Section: Aba and Nae Inhibit Seedling Growth And Their Depletion Durmentioning

confidence: 76%

“…Perhaps more compelling is the fact that both metabolites are negative regulators of seedling growth (Lopez-Molina et al, 2002;Blancaflor et al, 2003;Motes et al, 2005) and that endogenous ABA and NAE, which are typically elevated in desiccated seeds, are depleted during germination and early seedling growth in a comparable time course (Chapman et al, 1999;Jacobsen et al, 2002;Nakabayashi et al, 2005;Wang et al, 2006) (Figure 1). To test the hypothesis that NAE and ABA interact during plant development and to explore in more detail the potential mechanism(s) of NAE action in seedling growth arrest, we focus our attention here on seed germination and early seedling establishment.…”

Section: Introductionmentioning

confidence: 99%

N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling inArabidopsis thalianaSeedlings

et al. 2007

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N-Acylethanolamines (NAEs) are bioactive acylamides that are present in a wide range of organisms. In plants, NAEs are generally elevated in desiccated seeds, suggesting that they may play a role in seed physiology. NAE and abscisic acid (ABA) levels were depleted during seed germination, and both metabolites inhibited the growth of Arabidopsis thaliana seedlings within a similar developmental window. Combined application of low levels of ABA and NAE produced a more dramatic reduction in germination and growth than either compound alone. Transcript profiling and gene expression studies in NAE-treated seedlings revealed elevated transcripts for a number of ABA-responsive genes and genes typically enriched in desiccated seeds. The levels of ABI3 transcripts were inversely associated with NAE-modulated growth. Overexpression of the Arabidopsis NAE degrading enzyme fatty acid amide hydrolase resulted in seedlings that were hypersensitive to ABA, whereas the ABAinsensitive mutants, abi1-1, abi2-1, and abi3-1, exhibited reduced sensitivity to NAE. Collectively, our data indicate that an intact ABA signaling pathway is required for NAE action and that NAE may intersect the ABA pathway downstream from ABA. We propose that NAE metabolism interacts with ABA in the negative regulation of seedling development and that normal seedling establishment depends on the reduction of the endogenous levels of both metabolites.

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“…The presence of ABA affected to the smallest extent the cultivars Abel, Cacko and Saul in which, on average, 14% higher frequency and 16% higher dynamics and 17% shorter average time of germination, as compared with the least sprouting cultivars Bullion and Pikant, were noted. The significantly stimulating action of gibberellic acid about which other authors report [25][26][27][28][29], was found only when evaluating the rate of germination which increased by 3%, on average, as compared with the control. The weak reaction to the presence of GA 3 resulted from high vigour of oat seeds harvested in all the years at the optimal moisture content (16%).…”

Section: Germination In the Presence Of Growth Regulatorsmentioning

confidence: 62%

Susceptibility of naked oat cultivars to seed sprouting

et al. 2014

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The production of economically important cereals is accompanied by the phenomenon of sprouting which in naked cultivars may limit their reproduction and usability. The objective of the work is to evaluate the susceptibility to sprouting in naked oat cultivars, and to test the usefulness of sprouting indices. In the years 2008–2010 for seeds of 8 cultivars, differing in the degree of sprouting damage, the coefficient of sprouting (Cs) was determined. Germinability (GF), dynamics (GD) and average germination time (GAT) were determined for seeds germinating in the presence of abscisic acid (ABA), gibberellic acid (GA3) and under control conditions. Basing on the falling number (FN) in consecutive days of the sprouting induction, alpha-amylase activity was determined. The highest values of Cs were found in 2008, the year with the highest total rainfall and temperature. In the presence of ABA the GF decreased by 21%, the GAT was 4.7 days longer, and the GD decreased by 55% compared with other substrates. An increase in alpha-amylase activity contributed to a 50%, on average, decrease in FN at 10°C and 30°C after 48 and 24 h of incubation, respectively. In the analyzed years the greatest resistance to sprouting was found for Bullion seeds.

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Abscisic acid, phaseic acid and gibberellin contents associated with dormancy and germination in barley

Cited by 215 publications

References 57 publications

Involvement of aba in flower induction of Pharbitis nil

Involvement of aba in flower induction of Pharbitis nil

N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling inArabidopsis thalianaSeedlings

Susceptibility of naked oat cultivars to seed sprouting

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