Ethylene and Carbon Dioxide in the Growth and Development of Cultured Radish Roots

Radin, John W.; Loomis, R. S.

doi:10.1104/pp.44.11.1584

Cited by 58 publications

(30 citation statements)

References 14 publications

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“…These results were corroborated with the recent data about the stimulation of ethylene production by cytokinins (Rashotte et al 2005). Concentrations of 50-80 nl/l in the air can be already considered as inhibiting; this indicates that pea seedlings are more sensitive to exogenous ethylene than radish, petunia or prunus (Radin and Loomis 1969, DimasiTheriou et al 1993, Alsalihy et al 2004.…”

Section: Discussionsupporting

confidence: 80%

Role of cytokinins in growth correlations between roots and stems in pea (Pisum sativum L.) seedlings

Fišerová¹,

Šebánek²,

Hradilík³

et al. 2006

PLANT SOIL ENVIRON

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Pea seeds were swollen in solutions with different concentrations of cytokinin benzyladenine (BA). As compared with controls, a low concentration of BA (0.05 mg/l) did not affect the growth of stems and roots of twelve-day-old seedlings but concentrations of 0.20-4.00 mg/l showed an inhibiting effect; this inhibition was proportional to the concentration of BA. In controls the ratio between the lengths of stems and roots was equal to 1.14, while in seedlings influenced by BA in concentration of 0.20 mg/l its value was significantly lowered to 0.91. Also in six-day-old pea seedlings cultivated under in vitro conditions, BA concentrations of 0.70 and 3.30 mg/l inhibited the growth of roots and epicotyls and significantly increased the production of ethylene (by 150 and 330%, respectively). Three hours after the amputation of the root of five-day-old pea seedlings the level of cytokinin trans-zeatin increased in the apical part of the stem. Within the interval of 48 hours after the amputation of the root the concentration of this plant hormone gradually decreased again. The initial increase in the zeatin level in the stem indicates that the absence of the root induces a reduction of growth-inhibiting effects of roots, which negatively influences the zeatin level in the stem apex at the beginning of germination.

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Section: Discussionsupporting

confidence: 80%

Role of cytokinins in growth correlations between roots and stems in pea (Pisum sativum L.) seedlings

Fišerová¹,

Šebánek²,

Hradilík³

et al. 2006

PLANT SOIL ENVIRON

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“…The fact that very high levels of ethylene are not as effective in this system as low levels of IAA suggests that IAA inhibition is not entirely mediated by ethylene. In recent years a great deal of effort and ingenuity has gone into the design and construction of various devices that will measure accurately rapid growth responses of shoot tissue (4,6,8). We hope that the reintroduction, after more than half a century, of this simple and versatile root auxanometer will promote a similar interest in the rapid growth responses of root tissue.…”

Section: Discussionmentioning

confidence: 99%

“…Root growth can be inhibited also by treatment with ethylene, a response similar to other ethylene-mediated phenomena in that it has a half-maximal concentration requirement of 0.1 ,ul liter' of the gas and can be reversed by CO2 (2, 3,8). Chadwick and Burg (3) presented evidence to suggest that a large part of the IAA-induced inhibition of growth of excised pea root tips and virtually all such growth inhibitions of intact pea roots are the result of IAA-dependent ethylene production.…”

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confidence: 97%

Rapid Effects of Indoleacetic Acid and Ethylene on the Growth of Intact Pea Roots

Rauser

Horton²

1975

Plant Physiol.

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Root auxanometers were used to determine the growth rates of individual intact primary roots accurately and quickly. The growth of pea (Pisurn sativum L.) roots was inhibited by both indoleacetic acid and ethylene within 20 minutes. A supramaximal concentration of ethylene inhibited root growth less than did 5 to 20 ,uM indoleacetic acid, indicating that inhibition of root growth by auxin was not due only to indoleacetic acidinduced ethylene production. Inhibition of root growth was largely relieved within 60 minutes of removal of both growth regulators.

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“…Regarding the fact that in individual plant species ethylene production is different [e.g. Radin and Loomis (1969) observed an inhibiting effect of ethylene (2-3 µl/1) on the formation of lateral roots in radish (Raphanus sativus var. radicola), Dimasi-Theriou et al (1993) recorded an increase in number of adventitive roots at the concentration of ethylene 0.01-10 µl/l when regenerating petunia (Petunia hybrida) leaves, and/or Burg (1968) mentioned that a majority of physiological reactions took place within the range of 0.01-1.0 µl/l of volume concentration of ethylene] it is possible, when using a suitable experimental layout, to obtain a response in the order of nanolitres (Fišerová et al 2006(Fišerová et al , 2007.…”

mentioning

confidence: 99%

Estimation of ethylene production and 1-aminocyclopropane-1-carboxylic acid in plants by means of gas chromatography

Fišerová¹,

Mikušová²,

Klemš³

2008

PLANT SOIL ENVIRON

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The paper deals with problems associated with preparation and collection of samples when estimating the production of ethylene and content of ACC (1-aminocyclopropane-1-carboxylic acid) in plants by means of gas chromatography. A proper method of sampling can significantly influence not only the reliability of obtained data but also their interpretation. Attention was paid to cultivation of plant material, sampling vessels, conditions of ethylene production, sampling procedure, and storage of gaseous samples. The estimation of ACC as a precursor of ethylene is more laborious but it supplements the information about the endogenous level of ethylene in a given part of the plant organism. The authors describe the sampling procedure, methods of sample preservation, extraction and purification, and also the method of oxidation of ACC to ethylene. In the final part of this study the authors evaluate the time consumption and difficulty of individual methods and describe their advantages and disadvantages as compared with other, alternative methods.

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Ethylene and Carbon Dioxide in the Growth and Development of Cultured Radish Roots

Cited by 58 publications

References 14 publications

Role of cytokinins in growth correlations between roots and stems in pea (Pisum sativum L.) seedlings

Role of cytokinins in growth correlations between roots and stems in pea (Pisum sativum L.) seedlings

Rapid Effects of Indoleacetic Acid and Ethylene on the Growth of Intact Pea Roots

Estimation of ethylene production and 1-aminocyclopropane-1-carboxylic acid in plants by means of gas chromatography

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