Ethylene, Lateral Bud Growth and Indole-3-Acetic Acid Transport

Hillman, J. R.

doi:10.1016/b978-0-407-00920-2.50022-6

Cited by 7 publications

(3 citation statements)

References 37 publications

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“…Secondary factors or messengers such as abscisic acid (ABA) or ethylene have therefore been suggested to transmit the effect of the primary signal into the organ to be inhibited (Tucker 1978, Everat-Bourbouloux and Charnay 1982, Blake et ai. 1983, Hillman et al 1985. In particular, ABA was considered, since its concentration was high in the inhibited lateral buds and decreased after the removal of the dominant apex.…”

Section: The Search For a Dominance Signalmentioning

confidence: 99%

“…If this amplification mechanism exists, it could also explain the effect of ethylene and cytokinins on lateral bud growth; ethylene production is possibly stimulated by the accumulating IAA above the junction or at a node (Burg andBurg 1968, Russell andThimann 1988), which in turn could be part of the reason for the observed higher IAA metabolism and lateral bud/fruit growth inhibition. In contrast, cytokinins, originating possibly from roots, can inhibit IAA metabolism and promote lateral bud growth (Phillips 1975, Hillman et al, 1985. According to the above results, it is proposed that the autoinhibition of polar IAA transport at junctions represents the inhibiting correlative signal (Bangerth 1989).…”

Section: Experimental Designmentioning

confidence: 99%

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Dominance among fruits/sinks and the search for a correlative signal

Bangerth

1989

Physiologia Plantarum

227

153

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The present problems with hormonal signals transferring dominance effects are reviewed and, as a new hypothesis, it is stated that the sequence of sink development may establish the dominance effect. ‘Primigenic dominance’ (PD) is suggested to describe this kind of correlative inhibition, in which the earlier developed sink inhibits later developed organs. New results show that the polar IAA export of the earlier developed sink inhibits the IAA export of later developed sinks. This ‘autoinhibition’ occurs at ‘junctions’, where auxin streams from various sinks meet. It is suggested that this depressed IAA‐export of the subordinated fruit/sink acts as the signal that leads to inhibited development. This hypothesis avoids some of the problems related with other hypotheses, such as the requirement of a multidirectional signal. Primigenic dominance is a unifying hypothesis, which can be applied to most correlative dominance phenomena in the plant. Primigenic dominance is less complicated than the traditional ‘apical dominance’ (AD) hypothesis, because it does not require secondary messengers.

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Section: The Search For a Dominance Signalmentioning

confidence: 99%

Section: Experimental Designmentioning

confidence: 99%

Dominance among fruits/sinks and the search for a correlative signal

Bangerth

1989

Physiologia Plantarum

227

153

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“…Its physiological effects and mode of action in plants have been studied since Neljubov, in 1901, reported his studies on pea (Abeles, 1973;Lieberman, 1979;and Yang and Hoffman, 1984). This compound has been related to almost all aspects of plant growth and development: seed germination (Ketring and Morgan, 1972), vegetative growth (Abeles and Rubinstein, 1964;Burg and Burg, 1968;Hillman et al, 1985;Lurssen and Konze, 1985;and Musgrave and \Jalters, 1973), flowering (Hall and Forsyth, 1967), fruit ripening (Grierson et al, 1985), and abscission and senescence of plant organs (Addicott, 1982;Kozlowski, 1973;and Sexton et al, 1985).…”

Section: A Ethylene and Flower Abscissionmentioning

confidence: 99%