The Influence of Gibberellic Acid on Cell Division and Cell Elongation in Phaseolus Vulgaris

Greulach, Victor A.; Haesloop, John G.

doi:10.1002/j.1537-2197.1958.tb13168.x

Cited by 46 publications

(17 citation statements)

References 20 publications

(17 reference statements)

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“…Stebbins, Shah and Jura (1967) found that GA could bring about the reorientation of the spindle plane in stoma mother cells from at right angles to parallel to the longitudinal axis in leaves of Hordeum. GA can redirect longitudinal divisions to transversal ones and cell expansion to cell elongation in stems (Greulach and Haesloop 1958). Sachs and Kofranek (1963) found that Cycocel and Phosfon D redirected transversal divisions and cell elongation to corresponding lateral courses, and that the reorientation was counteracted by GA.…”

Section: Commentsmentioning

confidence: 99%

A Comparative Study of the Changes in Root Growth, Induced by Coumarin, Auxin, Ethylene, Kinetin and Gibberellic Acid

Svensson¹

1972

Physiologia Plantarum

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AbstraetThe effect of coumarin, IAA, ethylene, kinetin and gibberellic acid on roots of maize and wheat was investigated. Sterile attached and detached roots and isolated elongation zones were used. In some experiments a semi-sterile procedure was followed. The effects of the different regulators separately or in various combinations together with coumarin were studied on the root growth with regard to division, elongation and swelling of the cells. The ethylene production in isolated elongation zones was measured after treatment with coumarin, IAA, PCIB, kinetin, colchicine and dinitrophenol.The results show the following: 1) Each substance produces a specific morphologic pattern, 2) Changes in polarity were demonstrated for auxin-induced swelling in cell divisions and cell expansion and for coumarin-induced swelling in cell divisions. Other cell expansion in swollen parts was due to cylindric cells increasing in width while retaining their cylindric form, 3) Coumarin-induced inhibition could not be counteracted by IAA, PCIB, carbon dioxide, kinetin, gibberellic acid or Cycocel, 4) The ethylene production in isolated elongation zones increases noticeably after kinetin treatment, less strongly after auxin treatment and least after coumarin treatment. The production of ethylene does not seem to be correlated with the morphogenetic effect of the different substances, 5) The isolated elongation zones reacted to a) IAA and kinetin -with an increase in length in some cases and b) gibberellic acid with a reduction of their width, 6) The inhibitory effect of coumarin on the growth in length of the elongation zones was diminished by kinetin. The swelling produced by coumarin in these zones was reduced by gibberellic acid. The effects just mentioned of kinetin and gibberellic acid were considered as indirect ones, -From the present findings it was concluded that concomitant effects of auxin, ethylene, cytokinins and gibberellins are not obligatory for coumarin to exert its morphogenetic effects on root growth. In discussing the results some pitfalls in studies of growth reactions after application of hormones to roots containing meristem were emphasized.• , ,., . - -BaRJE SVENSSON Physiol. Plant., 26, 1972 SVEN

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Section: Commentsmentioning

confidence: 99%

A Comparative Study of the Changes in Root Growth, Induced by Coumarin, Auxin, Ethylene, Kinetin and Gibberellic Acid

Svensson¹

1972

Physiologia Plantarum

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“…A quantitative relationship between GA dose and elongation of stems of Tinantia fugax has been demonstrated by Bocchi (1957). The increased stem elongation of Phaseolus resulting from GA treatment has been shown to involve a considerable increase in cell multiplication as well as extension (Feucht, 1958;Greulach & Haesloop, 1958). In a study of apical dominance in Pisum, Wickson & Thimann (1958) have shown that GA only stimulates extension of lateral buds when the inhibition by the apical bud or by apically applied IAA is incomplete; this supports the general view taken in 5 I11 (I).…”

Section: Addendummentioning

confidence: 60%

Xi. Addendum

1959

Biological Reviews

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“…The above response of leaf mesophyll to GA, appears to be different from that of stem cortical and pith parenchyma (Greulach and Haesloop 1958) in that GA, increased number but decreased both size of pith parenchyma cells and number of intercellular spaces in the internodes of GA,-treated bean plants. In the present study, pea leaflet mesophyll cells from GA,-treated dwarfs had fewer cells and larger intercellular spaces.…”

Section: Methodsmentioning

confidence: 75%

An analysis of the effects of gibberellic acid on the leaflet structure of dwarf cultivars of pea (Pisum sativum)

Israelstam¹,

Davis²

1979

Can. J. Bot.

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ISRAELSTAM, G. F., iind E. DAVIS. 1979. An analysisof the effectsofgibberellic acid on the leaflet structure of dwarf cultivars of pea (Pi.srrtn scrticrrtn). Can. J . Bot. 57: 1089-1092. The effectsof gibberellic acid (GA,) on the penultimate leafletsof dwarf and normal cultivars of pea were investigated. In control plants, the leaflets of the d w a~f were heavier, thicker, and had a smaller surface area than the normal. Epidermal and palisade cells of the dwarf were longer than those of the normal cultivar and the dwarf had longer spongy mesophyll cells and more layers of spongy mesophyll than the normal, with fewer intercellular spaces.Application of GA, to dwarf plants increased leaflet surface area and length of epidermal cells, while leaflet weight and thickness and the number of layers of spongy mesophyll cells decreased. No significant changes in the leaflet of the normal cultivar were induced by GA,.The overall effect of GA, application to the dwarf cultivar was to induce a degree of differentiation in the penultimate leaflets such that they tended to resemble more closely those of the normal cultivar. ISRAELSTAM, G. F., et E. DAVIS. 1979. An analysis of the effects of gibberellic acid on the leaflet structure of dwarf cultivars of pea (Pisrrtn saticrrtn). Can. J. Bot. 57: 1089-1092. Les auteurs ont etudie les effets de I'acidegibbel-ellique (GA,) sur les folioles penultitmes d'un cultival-nain et d'un cultivar normal de pois. Chez les plantes temoins. les folioles du cultivarnain sont plus lourdes, plus epaisses et ont une sul-face reduite par rapport au cultivar normal. Les cellules epidel-miques et palissadiques du cultival-nilin sont plus longues que celles du cultivar normal et le cultival-nain a d e s couches plus nombreuses et plus longues de misophylle spongieux que le cultivar normal et moins d'espaces intercellulaires. L'application d e GA, B des plantes naines augmente la surface des folioles et la longueur des cellules epidermiques, alors que le poids des folioles, I'epaisseur et le nombre de couches d e cellules du mesophylle spongieux diminuent. I1 n'y a pas de changements significatifs dans la foliole du cultivar normal sous I'effet d e GA,. L'effet global d e I'application de GA, au cultivar nain consiste r'l induire dans les folioles penultitmes un degre de differenciation tel qu'elles tendent ressembler B celles du cultivar normal. [ T~x d u i t par le journal]

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The Influence of Gibberellic Acid on Cell Division and Cell Elongation in Phaseolus Vulgaris

Cited by 46 publications

References 20 publications

A Comparative Study of the Changes in Root Growth, Induced by Coumarin, Auxin, Ethylene, Kinetin and Gibberellic Acid

A Comparative Study of the Changes in Root Growth, Induced by Coumarin, Auxin, Ethylene, Kinetin and Gibberellic Acid

Xi. Addendum

An analysis of the effects of gibberellic acid on the leaflet structure of dwarf cultivars of pea (Pisum sativum)

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