Dormancy Regulators in Woody Plants: Experimental Induction of Dormancy in Betula pubescens

Eagles, C. F.; Wareing, P. F.

doi:10.1038/199874a0

Cited by 126 publications

(38 citation statements)

References 7 publications

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“…The results of these studies were in good accordance with many other investigations on dormancy processes, especially in woody plants (literature see Hemberg 1965;Saunders 1978;Smart 1996) including my own on bud dormancy of sycamore (Acer pseudoplatanus) (Dörffling 1963(Dörffling , 1964 and those obtained by Wareing and coworkers (Eagles and Wareing 1963;Robinson and others 1963;Robinson and Wareing 1964) at the University College of Wales with Acer and with Betula. They developed the hypothesis that in Betula pubescens inhibitor b is formed in leaves under short day conditions and moves to the growing apical bud where it induces dormancy.…”

Section: Dormancy Inducing Substances: the Dormin Conceptsupporting

confidence: 88%

The Discovery of Abscisic Acid: A Retrospect

Dörffling

2015

J Plant Growth Regul

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Parallel to the discovery of auxin as a growthpromoting hormone in the first half of the last century, it became evident that inhibitors of auxin-induced cell elongation, seed germination and bud growth also existed in plants. Their activity was noticed first in more or less unspecific bioassays, and their natural function remained unknown for a long time. The introduction of paper chromatography in combination with bioassays enabled improved separation of plant extracts and identification of biologically active compounds. By means of these new techniques, a highly active growth inhibitory fraction named 'inhibitor b' was discovered in many plants. Evidence that this fraction seemed also to be involved in abscission processes resulted in the name 'abscisin II', whereas another research group that investigated the possible role of inhibitor b in bud dormancy proposed the name 'dormin'. Great efforts were made to identify the chemical nature of the two compounds. In 1965, it was recognized that abscisin II and dormin possessed the same chemical structure, which received the name 'abscisic acid' (ABA). Soon afterwards the extraordinary role of ABA as a hormone involved in stress reactions and in seed maturation was discovered, whereas its suggested function in abscission and bud dormancy processes has not been well established until now. The name ABA is therefore not adequate with regard to the hormonal functions, but it is acceptable with regard to priority rules.

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Section: Dormancy Inducing Substances: the Dormin Conceptsupporting

confidence: 88%

The Discovery of Abscisic Acid: A Retrospect

Dörffling

2015

J Plant Growth Regul

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“…In the course of their isolation of 'Dormin' as the substance produced in leaves under short day treatment which was capable of inducing dormancy in shoots of sycamore (Robinson, Wareing and Thomas, 1963) and of birch (Eagles and Wareing, 1963) growing vigorously in long days, it was shown that dormin behaved chromatographically exactly like the j9-inhibitor of Bennet-Clarke and Kefford (1964). After Cornforth, Millborrow and Ryback (1965) had established the chemical structure of dormin and had achieved the synthesis of this compound in vitro, Millborrow (1967) showed that this substance-now called abscisic acid (ABA)-was the active ingredient of the j6-inhibitor obtained from twenty different species.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Abscisic Acid on Stem Elongation and Correlative Inhibition

Arney¹,

Mitchell²

1969

New Phytologist

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SUMMARYThe mature length of the second internode (which was undergoing rapid vacuolation at the time of treatment with ABA) was not appreciably affected by doses of ABA below 20 jig per plant although the rate of elongation was depressed for the first 2 days after treatment, the depression being as much as 50% in tall varieties. Doses of ABA in excess of 20 ^g not only depressed elongation rate immediately, but resulted in shorter internode length at maturity. Etiolated seedlings showed a stimulation of elongation rate and mature length in the dwarf 'Meteor', hut no statistically significant differences in the tall variety 'The Pilot' with doses below 20 jxg ABA. Higher doses of ABA caused immediate cessation of elongation in vacuolating internodes, but only postponed the onset of vacuolation in younger internodes. Lighted plants also showed this postponement of the onset of vacuolation in the younger internodes at higher doses; in both lighted and etiolated seedlings the normal growth rate was resumed after a delay of between 3 and 7 days.Decapitation reduced elongation rate during the subsequent 48 hours either with or without ABA. In the absence of ABA there was a subsequent recovery in growth rate of the dwarf variety so that the final length of the second internode was the same for both intact and decapitated plants. But decapitation of the tall variety produced a marked reduction in mature length of the second internode, as it did in all ABA treated plants both dwarf and tall, intact and decapitated. The only significant interaction between decapitation and ABA on elongation rate occurred in the tall variety: during the first 24 hours all doses of ABA produced approximately the same big reduction in elongation rate in intact plants but had no statistically significant effect on decapitated plants; during the second day only the higher doses of ABA reduced the elongation rate of intact plants while all three levels produced the same big reduction in elongation rate of the decapitated plants. In the dwarf variety there was no significant interaction between the decapitation and ABA effects. Lateral bud outgrowth in decapitated plants was inhibited by ABA, and 100 [ig per plant achieved inhibition comparable to that produced by the apex in intact plants. Hence ABA may possibly be the inhibitory substance demonstrated to be responsible for the phenomena of correlative inhibition.

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“…However, they are known as constituents of wine flavor 15,16) and a structurally related abscisic acid is a plant dormancy hormone. 17) Inhibitory activity of histamine release from antigen-stimulated RBL-2H3 cells was also reported for some …”

Section: Resultsmentioning

confidence: 99%

Aliphatic Glucoside, Zanthoionic Acid and Megastigmane Glucosides: Zanthoionosides A–E from the Leaves of <i>Zanthoxylum ailanthoides</i>

Teshima

Kawakami

Sugimoto

et al. 2017

CHEMICAL & PHARMACEUTICAL BULLETIN

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From the leaves of Zanthoxylum ailanthoides, 4′-O-p-E-coumaric acid esters of 2-propanol β-Dglucopyranoside, megastigmane and megastigmane glucosides were isolated. Their structures were elucidated by spectroscopic evidence. The absolute configurations of the megastigmane and aglycone of megastigmane glucosides were determined by the octant rule and modified Mosher's method after protection of carboxylic acids by p-bromophenacyl esters and primary alcohols by pivaloyl esters.

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Dormancy Regulators in Woody Plants: Experimental Induction of Dormancy in Betula pubescens

Cited by 126 publications

References 7 publications

The Discovery of Abscisic Acid: A Retrospect

The Discovery of Abscisic Acid: A Retrospect

The Effect of Abscisic Acid on Stem Elongation and Correlative Inhibition

Aliphatic Glucoside, Zanthoionic Acid and Megastigmane Glucosides: Zanthoionosides A–E from the Leaves of <i>Zanthoxylum ailanthoides</i>

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