The role of ethylene in 2.4-D-induced growth inhibition

Holm, Robert E.; Abeles, Frederick B.

doi:10.1007/bf00386430

Cited by 65 publications

(44 citation statements)

References 17 publications

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“…inhibition of seed germination (22), inhibition of a-aniylase (12,19), promotion of plienvialalnine aninionia-l-yase (25), floral morphogenesis ( 16,17,23), or inhibition of growth (16,21). In fact, we reported earlier that increased ethylene productioni (lid nlot account for the inhibition of growth of excised soybean hvpocotyls by abscisic aicid (21).…”

Section: Discussionmentioning

confidence: 99%

Abscission: Role of Abscisic Acid

Cracker¹,

Abeles²

1969

Plant Physiol.

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Abstract. Th2 effect of abscisic acid on cotton (Gossypium hirsutuin L. cv. Acala 4-42) and bean (Phaseolus vulgaris L. cv. Red Kidney) explants was 2-fold. It increased ethylene producticn from the explants, which was found to account for some of its ability to accelerate abscission. Absci ic acd also increased the activity of cellulase. Increased synthesis of cellulaso was not du to an increase in aging of the explants but rather was an effect of abscisic acid on the processes that lead to cellulase synthesis or activity. Earlier papers from this laboratory have described Lhe trea:mncnt of explants with e.hylene anid CO., in desiccators and gas collection bottles (4), the measurement of ethylene by gas chromatography (8), the injection of actinomycin D (1 1 g//,l water) into the separation layers of explants (6), the determination of celluilase ac.ivity by the lo s of viscosity of sodiuim carboxymethyl cellulose (CMC) (4), and break strength measurements by a recording abscissor ( 14). ResultsThe effect of abscisic acid on break strength and ethylene production from explants is summmarized in

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Section: Discussionmentioning

confidence: 99%

Abscission: Role of Abscisic Acid

Cracker¹,

Abeles²

1969

Plant Physiol.

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“…The production of ethylene, the ripening hormone in fruits, has been observed to increase in many plant systems after treatment with auxins (Hansen 1946;Hall 1962, 1964;Abeles and Rubinstein 1964;Burg and Burg 1966;Hall and Forsyth 1967;Holm and Abeles 1968). Several of the effects considered to be due to auxin are now attributed to this increased ethylene production and not directly to the auxin.…”

Section: Introduotionmentioning

confidence: 99%

Relationship Between Internal Distribution of Exogenous Auxins and Accelerated Ripening of Banana Fruit

Vendrell¹

1970

Aust. Jnl. Of Bio. Sci.

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SummaryBananas were dipped in aqueous solutions of 2,4-dichlorophenoxyacetic acid (2,4-D) or indoleacetic acid (IAA) at concentrations ranging from 10-5 to 10-2M. Auxin, in proportion to its concentration, stimulated ethylene production; 10-2M and 1O-3M IAA and all 2,4-D concentrations advanced ripening relative to control fruit. 2,4-D at concentrations of 10-2M, 10-3M, and sometimes 10-4M stimulated the respiratory climacteric immediately after treatment, but ripening of the peel was delayed compared to the pulp.These observations contrasted with those resulting from auxin treatment of banana slices by vacuum infiltration, where ripening was delayed.Following treatment by dipping, a gradient of auxin concentration developed from the skin to the pulp, but the amount of auxin penetrating into the pulp was small. A small amount of 2,4-D was metabolized to CO 2, but 2,4-D did not contribute carbon to the increased ethylene production.The advancement in the time of ripening in whole fruit dipped in solutions of auxins is attributed to the uneven distribution of auxin, which causes a localized production of ethylene. While ripening is delayed in cells containing a high concentration of auxin, ethylene diffusing from these cells triggers ripening in surrounding tissues. The effect of the delay in senescence resulting from auxin treatment of banana tissue can be observed in the difference in ripening times of peel and pulp.

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“…Herbicides have been reported to stimulate ethylene production in a number of plant species (1,3,11,13,14,17,18,20,21). In particular, the auxin-type herbicides such as 2,4-D, 2,4,5-T, picloram, 2,5-dichlorophenoxyacetic acid, and dicamba promote ethylene biosynthesis (5,8,(15)(16)(17)(18)(19).…”

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An Evaluation of the Role of Ethylene in Herbicidal Injury Induced by Picloram or Clopyralid in Rapeseed and Sunflower Plants

Hall

Bassi²,

Spencer³

et al. 1985

Plant Physiol.

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ABSTRACrThe role of ethylene in herbicidal injury induced by 4-amino-3,5,6-trichloropicolinic acid (picloram) or 3,6-dichloropicolinic acid (clopyralid) was investipted in sunflower (Helianthus annuas L.) and rapeseed (Brassica napus L. cv Altex). Picloram induces herbicide injury in both species, whereas clopyralid induces injury only in sunflower. Picloram applied to the third leaf of a rapeseed plant increased ethylene evolution several-fold. Clopyralid had no effect on ethylene production in rapeseed. In sunflower, both picloram and clopyralid elevated ethylene production. Ethylene biosynthesis induced by the herbicide treatment was not restricted to treated areas. When clopyralid was applied only to the lower stem and cotyledons of sunflower, the herbicide treatment resulted in an increase in the rate of ethylene production from the true leaves. Increased ethylene production preceded or coincided with the onset of morphological responses induced by a herbicide application to a susceptible species. The contrast in ethylene production by these two plant species cannot be accounted for by differences in absorption and translocation of clopyralid and picloram.Treatment with aminoethoxyvinylglycine (AVG) before picloram or clopyralid application prevented an increase in ethylene production. Pretreatment with AVG also delayed the development of morphological changes induced by picloram or clopyralid. It appears that enhanced ethylene biosynthesis after application of picloram or clopyralid to the susceptible plant species was a factor involved in resulting morphological changes.

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The role of ethylene in 2.4-D-induced growth inhibition

Cited by 65 publications

References 17 publications

Abscission: Role of Abscisic Acid

Abscission: Role of Abscisic Acid

Relationship Between Internal Distribution of Exogenous Auxins and Accelerated Ripening of Banana Fruit

An Evaluation of the Role of Ethylene in Herbicidal Injury Induced by Picloram or Clopyralid in Rapeseed and Sunflower Plants

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