Effects of light and photoperiodic conditions on abscisic acid in leaves and roots of Acer pseudoplatanus L.

Phillips, I. D. J.; Miners, J.; Roddick, James G.

doi:10.1007/bf00380871

Cited by 18 publications

(8 citation statements)

References 18 publications

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“…This growth cessation was not accompanied by significant changes in stomatal resistance or in transpiration, neither was there any correlation between free ABA content in shoots and elongation rate. This is in accordance with results of Lenton et al (1972), Alvim et al (1979) and Phillips et al (1980). All these results indicate that photoperiod does not regulate elongation growth in Salix primarOy by affecting the ABA level in the plants.…”

Section: Disciissionsupporting

confidence: 93%

“…The role of ABA in regulation of growth and growth cessation is a matter of controversy. Although some studies of seasonal changes of ABA content in woody plants have indicated a correlation between ABA content and the state of bud dormancy (Davison and Young 1974, Wright 1975, Alvim et al 1976, Webber et al 1979, experiments performed under controlled conditions have failed to establish a connection between ABA content and SD-induced growth cessation (Letiton et al 1972, Alvim et al, 1979, Phillips et al 1980.…”

Section: Introductionmentioning

confidence: 99%

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Abscisic acid and cessation of apical growth in Salix pentandra

Johansen¹,

Odén

Junttila

1986

Physiologia Plantarum

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Effects of exogenous abscisic acid (ABA) on growth and transpiration in seedlings of two ecotypes of Salix pentandra L. were studied in phytotron experiments. Application of ABA resulted in increased stomatal resistance, reduced transpiration and reduced growth rate. ABA did not induce cessation of apical growth in seedlings grown under a 24‐h photoperiod. The content of endogenous ABA in seedlings grown under 24‐h (LD) or 12‐h (SD) photoperiods was analysed from purified methanol extracts using gas chromatography and electron capture detection. No significant differences were found in the ABA contents of LD‐ and SD‐grown plants. SD‐induced cessation of apical growth was not associated with increased stomatal resistance or reduced transpiration rate.

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Section: Disciissionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Abscisic acid and cessation of apical growth in Salix pentandra

Johansen¹,

Odén

Junttila

1986

Physiologia Plantarum

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“…,An increased ABA level was found in the apical and lateral buds during SD treatment, while the changes in the leaves were generally the opposite, if any (Fig, 4, Tab, 4), ,'^lthough earlier work demonstrated an increase in inhibitor content in SD (Wareing and Saunders 1971), other studies ha\e failed to show such an effect (Lenton et al, 1972, Phillips et al, 1980, Barros and Neill 1986, Johansen et al, 1986, The controversy may be related to differences between species and ecotypes, or between the types of tissue analysed, \ birch of northern origin was studied in the present experiments, while tnuch more southern ones were studied by others (Lenton et al, 1972, Hocking and Hilhtian 19751, and latitudinal ecotypes of bttch ha\'e markedly different photoperiodic responses (Habjorg 1972), In their studies, Johansen et al, (1986) and Barros and Neill (1986) analysed whole shoots with leaves. Lateral buds have not been analysed before.…”

Section: Discussionmentioning

confidence: 88%

Growth cessation and bud dormancy in relation to ABA level in seedlings and coppice shoots of Betula pubescens as affected by a short photoperiod, water stress and chilling

Rinne¹,

Saarelainen²,

Junttila³

1994

Physiol Plant

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Growth cessation and bud dormancy in relation to ABA level in seedlings and coppice shoots of Betula pubescem as affected hy a short photoperiod, water stress and chilling Paivi Rinne, Annikki Saarelainen and Olavi Junttila Rinne, P., Saarelainen. A. and Junttila, O. 1994. Grouth cessation and bud dormancy in relation to ABA level in seedlings and coppice shoots of Betula pubescens as affected by a short photoperiod, water stress and chilling. -Physiol. Plant. 90; 451^58.Seedlings and coppice shoots of Betula pube.scens Ehrh. « ere grown under controlled conditions designed to simulate the annual growth cycle, and a water stress was introduced during the short day iSD). .Alleviation of bud domiancy after increasing periods at chilling temperatures was tested under long day (LDl conditions. .Abscisic acid (ABA) was analysed in leaf and bud samples by gas chromatography-mass spectrometrs using l-EJjJ.ABA as the internal standard. Elongation growth of coppice shools uas faster than that of .seedlings under both LD and SD conditions, while the final growth cessation occurred in a similar manner and was not affected by water stress, v\hich significantly reduced growth rate in both plant types. Bud domianex gradually decreased with increasing length of chilling, starting from the basal paits of the plant axis. Water stress did not retard budburst. but rather improved it in the chilled coppice shoots and in the non-chi!led and partially chilled seedlings. Water content of buds was higher in coppice shoots than in seedlings, but after exposure to SD, it gradually decreased to 45^;? in both plant types and was not affected by water stress or chilling. The .ABA le\el in both lea\es and buds increased during SD treatment and was enhanced by water stress. No clear differences in bud .AB.A level were found between the seedlings and coppice shoots under SD conditions, although coppice shoots had less AB.A during the preceding LD conditions. There was, in general, no clear effect of chilling on bud AB,A level, Budburst in chilled, single-node cuttings was inhibited by external AB.A treatment, which raised the internal ABA levels 10 to 1.50 times above normal. The observed con elation between ABA level and water content in buds during induction of dortnancy under SD and water stress conditions indicates a possible role ibr ABA in the regulation of dormancy.

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“…Light also increases ABA in bean seedlings (TrLLBERG 1974) and in pea roots (TIETZ 1974), while red light is postulated to increase ABA in mung bean root tips (T ANADA 1973). Light, especially far red-enriched light, accelerates the glucosylation of ABA and the metabolism of ABA to phaseic acid (LoVEYS 1979, PHILLIPS et al 1980). Low light intensity decreases the cytokinin content of roots of Solanum andigena exposed to short days (WOOLLEY and WAREING 1972a).…”

Section: Effects On Ethylenementioning

confidence: 99%

Functions of Hormones at the Cellular Level of Organization

Evans¹

1984

Hormonal Regulation of Development II

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Effects of light and photoperiodic conditions on abscisic acid in leaves and roots of Acer pseudoplatanus L.

Cited by 18 publications

References 18 publications

Abscisic acid and cessation of apical growth in Salix pentandra

Abscisic acid and cessation of apical growth in Salix pentandra

Growth cessation and bud dormancy in relation to ABA level in seedlings and coppice shoots of Betula pubescens as affected by a short photoperiod, water stress and chilling

Functions of Hormones at the Cellular Level of Organization

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