Treatment of Fruit with Propylene gives Information about the Biogenesis of Ethylene

McMurchie, Edward J.; McGlasson, W. B.; Eaks, Irving L.

doi:10.1038/237235a0

Cited by 394 publications

(214 citation statements)

References 15 publications

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“…Once ripening is induced, ethylene will promote the rate of the various ripening processes including its own biosynthesis (3,18). This sequence of ethylene action, initiation of ripening followed by promotion of ripening, fits the postulation of McMurchie et al (19) that two systems are involved in the regulation of ethylene biosynthesis in climacteric fruits. System 1 ethylene is related to the low preclimacteric ethylene production and is initiated or controlled by an unknown 'aging' factor.…”

mentioning

confidence: 64%

Ethylene-Promoted Conversion of 1-Aminocyclopropane-1-Carboxylic Acid to Ethylene in Peel of Apple at Various Stages of Fruit Development

Bufler¹

1986

Plant Physiol.

119

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Internal ethylene concentration, ability to convert 1-amino-cyclopropane-l-carboxylic acid (ACC) to ethylene (ethylene-forming enzyme IEFEI activity) and ACC content in the peel of apples (Malus domestica Borkh., cv Golden Delicious) increased only slightly during fruit maturation on the tree. Treatment of immature apples with 100 microliters ethylene per liter for 24 hours increased EFE activity in the peel tissue, but did not induce an increase in ethylene production. This ability of apple peel tissue to respond to ethylene with elevated EFE activity increased exponentially during maturation on the tree. After harvest of mature preclimacteric apples previously treated with aminoethoxyvinylglycine, 0.05 microliter per liter ethylene did not immediately cause a rapid increase of development in EFE activity in peel tissue. However, 0.5 microliter per liter ethylene and higher concentrations did. The ethylene concentration for half-maximal promotion of EFE development was estimated to be approximately 0.9 microliter per liter. CO2 partially inhibited the rapid increase of ethylene-promoted development of EFE activity. It is suggested that ethylene-promoted CO2 production is involved in the regulation of autocatalytic ethylene production in apples.

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mentioning

confidence: 64%

Ethylene-Promoted Conversion of 1-Aminocyclopropane-1-Carboxylic Acid to Ethylene in Peel of Apple at Various Stages of Fruit Development

Bufler¹

1986

Plant Physiol.

119

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“…Propylene is thought to interact with the hypothetical ethylene receptor in a manner similar to ethylene, but with a much lower affinity. At 100-fold higher concentrations than ethylene, propylene can be used to induce ethylene responses in plant tissue McMurchie et al, 1972). This allows measurement of autocatalytically induced ethylene production that would be precluded by treatment with ethylene itself.…”

Section: Pollination Factors Regulating Expression Of Genes Encoding mentioning

confidence: 99%

“…Eecause the affinity of propylene for the ethylene receptor is -100-fold less than that of ethylene, a 100-fold higher concentration of propylene was used in our experiment McMurchie et al, 1972). Ethylene production by the flowers was monitored by withdrawing air samples from the tanks at appropriate time intervals for analysis of ethylene concentration bygas chromatography as described below.…”

Section: Propylens Studiesmentioning

confidence: 99%

Interorgan regulation of ethylene biosynthetic genes by pollination.

et al. 1993

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Pollination initiates a syndrome of developmental events that contribute to successful reproduction, including perianth senescence, changes in pigmentation, and ovule differentiation in preparation for impending fertilization. In orchid flowers, initiation of each of these processes in distinct floral organs is strictly and coordinately controlled by pollination, thus providing a unique opportunity to study the signals that coordinate interorgan postpollination development. Because ethylene has been implicated in contributing to regulation of severa1 aspects of postpollination development, we focused on determining the expression of its biosynthetic genes and their possible role in regulation. The abundance of mRNA encoding both 1-aminocyclopropane-l-carboxylic acid (ACC) synthase and ACC oxidase in the stigma, ovary, and labellum was found to be coordinately regulated by emasculation, auxin, and ethylene. Although petals contribute up to 26% of total flower ethylene and accumulate high levels of ACC oxidase mRNA and activity following pollination, no ACC synthase mRNA or activity was detected in this tissue. Together, these results support a model of interorgan regulation of postpollination development that depends on pollination-stimulated accumulation of mRNA encoding ethylene biosynthetic enzymes in a developmentally regulated and tissue-specific manner. This model relies on the translocation of a soluble hormone precursor, ACC, rather than on the translocation of the hormone itself. In this way, ACC serves to actuate the response already initiated by ethylene perceived by other parts of the flower. Thus, ACC may function as a secondary transmissible signal that coordinates postpollination development in diverse floral organs.

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“…In response to wounding, this feedback is negative, and ethylene biosynthesis is self-limiting and transient (10). In climacteric ripening, this feedback is apparently positive, and ethylene biosynthesis is autocatalytic and persistent (15). McMurchie et al (15) proposed the existence of two systems for regulating ethylene biosynthesis: system I controlling most developmental and wound ethylene, system II responsible for climacteric ethylene. It has been suggested that oligosaccharides released from cell walls by wounding may play a role in regulating various plant responses, including ethylene biosynthesis (19,22,27).…”

mentioning

confidence: 99%

“…In climacteric ripening, this feedback is apparently positive, and ethylene biosynthesis is autocatalytic and persistent (15). McMurchie et al (15) proposed the existence of two systems for regulating ethylene biosynthesis: system I controlling most developmental and wound ethylene, system II responsible for climacteric ethylene. It has been suggested that oligosaccharides released from cell walls by wounding may play a role in regulating various plant responses, including ethylene biosynthesis (19,22,27). Pectic oligomers, in particular, are known to induce wound and defense responses in many plants (16,20,27) and to induce transient ethylene biosynthesis in preclimacteric tomato pericarp discs (5).…”

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confidence: 99%

Induction and Regulation of Ethylene Biosynthesis by Pectic Oligomers in Cultured Pear Cells

Campbell¹,

Labavitch²

1991

Plant Physiol.

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Pectic oligomers induced a rapid, transient increase in ethylene biosynthesis when added to pear cells in suspension culture. The rate of ethylene biosynthesis increased within 30 to 40 minutes after oligomer addition, reached a maximum between 90 and 120 minutes after addition, and then decreased to basal rates of synthesis. Both the rapid increase and decrease in biosynthesis appear to be precisely regulated components of the ethylene response to oligomers. Induction of ethylene biosynthesis by pectic oligomers resulted in a reduced sensitivity of cells to further ethylene induction. This reduction in sensitivity occurred within 90 minutes after an oligomer treatment, slightly preceding the decline in ethylene synthesis. The degree of insensitivity induced was proportional to the concentration of oligomer in the first treatment. Induced insensitivity to elicitors appears to represent a novel mechanism which may limit continued ethylene biosynthesis after ethylene induction. Ethylene was produced by pear cells throughout the cell growth cycle, as cells increased in density over a 6 day period. Endogenous ethylene biosynthesis was at a maximum during the first 4 days of rapid cell growth, then declined to half the peak rate through day 10. Pectic oligomers could induce an increase in ethylene biosynthesis above this background rate only after day 5, as endogenous biosynthesis declined. Changes in sensitivity to added oligomer during the growth cycle may result from insensitivity to elicitors induced by growth processes.

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Treatment of Fruit with Propylene gives Information about the Biogenesis of Ethylene

Cited by 394 publications

References 15 publications

Ethylene-Promoted Conversion of 1-Aminocyclopropane-1-Carboxylic Acid to Ethylene in Peel of Apple at Various Stages of Fruit Development

Ethylene-Promoted Conversion of 1-Aminocyclopropane-1-Carboxylic Acid to Ethylene in Peel of Apple at Various Stages of Fruit Development

Interorgan regulation of ethylene biosynthetic genes by pollination.

Induction and Regulation of Ethylene Biosynthesis by Pectic Oligomers in Cultured Pear Cells

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