Ethylene Promotes Elongation Growth and Auxin Promotes Radial Growth in <i>Ranunculus sceleratus</i> Petioles

Smulders, M.J.M.; Horton, Roger F.

doi:10.1104/pp.96.3.806

Cited by 24 publications

(16 citation statements)

References 23 publications

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“…Thus, this species contrasts with Regnellidium diphyllum, Ranunculus sceleratus and Nymphoides peltata, in which auxin is required for ethylene action (Walters and Osborne, 1979;Horton and Samarakoon, 1982;Malone and Ridge, 1983). A combination of ethylene and auxin treatment of three aquatic plants, Regnellidium diphyllum, Hvdrocharis morsus-ranae and Ranunculus sceleratus showed that eth ylene and auxin effects are additive (Cookson and Osborne, 1978;Smulders and Horton, 1991) and both enhance elongation. Neither phenomenon was found in R. palustris.…”

Section: Discussionmentioning

confidence: 99%

Physiological Ecology of Riverside Species: Adaptive Responses of Plants to Submergence

Blom

1994

Annals of Botany

149

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In river floodplains, variation in flooding conditions results in successional stages in colonization ranging from annual pioneers to long-lived perennials. Reactions to submergence of species from the mid-successional zone are compared with adaptive responses of species from other zones. Presence and abundance are related to elevation and can be explained by characteristics of biomass production, and recovery in response to various submergence intensities.Rume.x species, from early to late successional stages, serve as models to elucidate, in more detail, mechanisms of adaptation. Flooding-resistant species develop large numbers of adventitious roots upon submergence and exposure to low oxygen conditions. Due to internal oxygen transport through aerenchyma, soil around these roots is re oxidized, which stimulates bacterial nitrification. Ethylene and auxin promote adventitious rooting. Increased petiole elongation is also an adaptive feature of submergence-resistant Rume.x species. Differences between species in submergence-induced growth are not only controlled by variation in endogenous levels of ethylene but also by different sensitivities to this hormone. Auxin does not affect Rume.x petiole elongation, but a clear positive effect of gibberellin is demonstrated. Apparently, submergence induces a higher sensitivity to gibberellin and ethylene in the petioles of flooding-resistant Rume.x. Many of the submergence reactions can also be induced by restricting the oxygen supply, suggesting that low-oxygen might be a triggering factor. The Rume.x species we study represent various distinct communities. Thus, the ecophysiological phenomena observed in these model plants may explain processes and patterns in other species too and thus are interpretable at the riverside community level.

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Section: Discussionmentioning

confidence: 99%

Physiological Ecology of Riverside Species: Adaptive Responses of Plants to Submergence

Blom

1994

Annals of Botany

149

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“…JA-Me inhibited elongation and radial growth promoted in petioles of Ranunculus scleratus by IAA and ethylene, respectively (Smulders and Horton 1991). Recently, it was found that IAA stimulated elongation growth of petiole and induced epinasty of intact Bryophyllum calycinum plants, and JA-Me greatly inhibited both processes (Ueda, Saniewski and Miyamoto, unpublished results).…”

Section: Inhibition Of Iaa-indu Ced Cell Elongationmentioning

confidence: 95%

Relationships between jasmonates and auxin in regulation of some physiological processes in higher plants

2002

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Growth and development of plants are regulated by interactions among different plant growth substances. During stress conditions, both abiotic and biotic, interaction of the some hormones activates defense responses. The present review describes the interaction between j asmonates and auxin in regulation of some physiological processes in plant growth and development. Some jasmonate-induced processes reduced by auxins and some auxin stimulated physiological processes inhibited by jasmonates are the focus of this review. Therefore, the following physiological processes are described: stem cell growth, abscission, secondary abscission zone formation, tendril coiling, opening of the pulvinules in Mimosa pudica, wounding and induced gene expression, nicotine biosynthesis and auxin biosynthesis in Brassicaceae.

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“…96, 1996 Rumex pcilustris. In order to compare and validate our results, both Rumex palustris and Ranunculus sceleratus were used in similar experiments, since for the latter species auxin involvement has been clearly demon strated (Musgrave and Walters 1973, Cookson and Os borne 1978, Horton and Samarakoon 1982, Smulders and Horton 1991. The main objectives were to deter mine whether ( 1) the submergence-induced petiole elon gation o f Rumex palustris can be arrested by application of an auxin transport inhibitor, ageing of petiole tissue or removal of the lamina, (2 ) submergence results in a change in petiole responsiveness of Rumex palustris to wards auxin, and (3) the involvement of auxin in the submergence response of Rumex palustris and Ranuncu lus sceleratus is comparable.…”

mentioning

confidence: 99%

The contrasting role of auxin in submergence‐induced petiole elongation in two species from frequently flooded wetlands

Rijnders

Barendse

Blom

et al. 1996

Physiologia Plantarum

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The contrasting role of auxin in submergence-induced petiole elongation in two species from frequently flooded wetlands J a n G . H . M . R ijn d e rs , G e r a r d W. M. B a re n d se , C o rn e lis W. P. M . B lom a n d L a u r e n s A. C. J. V oesenek naphthylphthalamic acid (NPA) had no effect on petiole elongation. The elongation response after NAA or NPA treatment was comparable for plants in both submerged and drained conditions. Pre-ageing of detached petioles of Rumex paliistris for 3 h in light or in dark conditions had no effect on the submergence-induced elongation. In comparison to intact plants, detached petioles of Rumex paliistris, with or without lamina, did not show significant differences in responsiveness to IAA between drained or submerged conditions. This was in contrast to Ranunculus sceleratus where submergence caused a clear increase in responsiveness towards IAA. Removal of the lamina, the putative source of auxin, or treatment with NPA did not hinder the submergence-induced elongation of detached Rumex paliistris petioles, but severely inhibited elongation of detached Ranunculus sceleratus petioles. This inhibition could be restored by application of NAA, suggesting the specific involvement of auxin in the submergence response of Ranunculus sceleratus. It is concluded that, in contrast to Ranunculus sceleratus, auxin is probably not involved in the submergence-induced petiole elongation of Rumex paliistris.

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Ethylene Promotes Elongation Growth and Auxin Promotes Radial Growth in Ranunculus sceleratus Petioles

Abstract: Submergence induces elongation in the petioles of Ranunculus sceleratus L

Cited by 24 publications

References 23 publications

Physiological Ecology of Riverside Species: Adaptive Responses of Plants to Submergence

Physiological Ecology of Riverside Species: Adaptive Responses of Plants to Submergence

Relationships between jasmonates and auxin in regulation of some physiological processes in higher plants

The contrasting role of auxin in submergence‐induced petiole elongation in two species from frequently flooded wetlands

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