Effects of Wounding on Respiration and Ethylene Production by Cantaloupe Fruit Tissue

McGlasson, W. B.; Pratt, Harlan K.

doi:10.1104/pp.39.1.128

Cited by 61 publications

(37 citation statements)

References 15 publications

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“…1) was not expected. It was observed conducted, however, and has been observe An initial high rate of 02 uptake followed by a lower rate was lo0 observed in freshly sliced green banana fruit (15), and an initial high rate of respiration measured as CO2 release fol-'-lowed by a lower rate was observed in fresh slices of banana (15), potato (13), and cantaloupe fruit (14). 80% increase from the minimum, whereas in potato slices it can be 400% (9).…”

Section: Discussionmentioning

confidence: 96%

Investigation of Respiratory and Ion Transport Properties of Aging Bean Stem Slices

Floyd

Rains

1971

Plant Physiol.

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Ion and oxygen uptake were studied on aging bean stem slices. Oxygen uptake was high immediately after slicing, decreased to a minimum at 100 minutes, and then increased again. Ion uptake per unit of 02 uptake data suggested that metabolic energy was utilized almost exclusively for sodium transport in fresh tissue but was diverted to potassium transport as the slices aged. Oxygen and ion uptake in fresh slices was less sensitive to 2, 4-dinitrophenol as compared to the aged slices, indicating major metabolic and physiological changes occurred during aging. This was further substantiated by the tissue response to cyanide and antimycin A. Oxygen uptake was decreased by cyanide (22% by 1 mM) and antimycin A (14% by 1 microgram per milliliter) in fresh slices but not in aged slices. Potassium uptake that developed during aging was sensitive to cyanide and antimycin A. The results are pertinent to understanding the role of the stem in regulating ion transport in plants.The ionic environment of plant leaf cells is a result of the operation of several ion transport systems. The stem has recently been recognized as an important system in regulating ion flow to the leaves. Jacoby (6), utilizing brittle wax beans, has presented cogent experiments. When derooted bean plants were placed in low concentrations of NaCl, Na' was retained in the basal portion of the stem, whereas Cl was distributed throughout the entire plant. Sodium concentration was highest in the lower portion of the stem and decreased exponentially with distance from the base. Sodium retention in the stem was sensitive to metabolic inhibitors, and it was concluded that Na retention in the basal parts was due to its active accumulation by cells lining the translocation path (7).Observations on the ion uptake characteristics of bean stem slices have yielded more information on the nature of the ion absorption system in the stem. Rains (16), investigating the ion uptake properties of brittle wax bean slices, observed that Na uptake was much greater than K uptake in freshly sliced stem tissue.

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Section: Discussionmentioning

confidence: 96%

Investigation of Respiratory and Ion Transport Properties of Aging Bean Stem Slices

Floyd

Rains

1971

Plant Physiol.

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“…The increased ethylene production which results from injury in fruit tissues may hasten the onset of a respiratory climacteric. This response, which has been observed in slices cut from three-quarter-grown cantaloupe fruit, may herald the commencement of physiological changes leading to natural ripening (McGlasson and Pratt 1964). However, in underground storage tissues, stimulated ethylene production may be concerned with the mechanisms of wound healing (Stahmann, Clare, and Woodbury 1966;Imaseki, Uchiyama, and Uritani 1968).…”

mentioning

confidence: 99%

“…It is well known that injury and infection by disease organisms may stimulate ethylene production by plant tissues (Williamson 1950;Burg 1962;McGlasson and Pratt 1964). The increased ethylene production which results from injury in fruit tissues may hasten the onset of a respiratory climacteric.…”

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confidence: 99%

Ethylene Production by Slices of Green Banana Fruit and Potato Tuber Tissue During The Development of Induced Respiration

McGlasson¹

1969

Aust. Jnl. Of Bio. Sci.

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It is well known that injury and infection by disease organisms may stimulate ethylene production by plant tissues (Williamson 1950; Burg 1962; McGlasson and Pratt 1964). The increased ethylene production which results from injury in fruit tissues may hasten the onset of a respiratory climacteric. This response, which has been observed in slices cut from three-quarter-grown cantaloupe fruit, may herald the commencement of physiological changes leading to natural ripening (McGlasson and Pratt 1964). However, in underground storage tissues, stimulated ethylene production may be concerned with the mechanisms of wound healing (Stahmann, Clare, and Woodbury 1966; Imaseki, Uchiyama, and Uritani 1968). The phenomenon of induced respiration in tissue slices of bulky underground storage organs has been known for many years (Laties 1967) and more recently it has been found to occur in sections or slices of other plant parts (ap Rees 1966). Palmer and McGlasson (1969) observed a similar rise in slices of green banana fruit which they considered to be a form of "induced" respiration.

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“…Since a high rate of ethylene production is often accompanied by raised respiration in various phenomena such as fruit ripening (4), wounding (31,32), physiological disorder (20), etc., it could be that the effect of oleanimins on growth is a result of respiratorily enhanced ethylene synthesis followed by ethyleneregulated growth.…”

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confidence: 99%

Probing a Membrane Matrix Regulating Hormone Action

Iwata¹,

Stowe²

1973

Plant Physiol.

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Lipids which are active oleanimins, i.e., those which stimulate respiration and auxin-induced cell elongation of pea stem sections, also initiate a period of Trace quantities of various lipids and their derivatives can enhance respiration and the growth-promoting effect of auxin on pea stem sections. Stowe and Dotts (45) proposed the term "oleanimin" for these physiologically active oily substances and have demonstrated that the only consistent, common properties of oleanimins are that they possess molecular lengths longer than 20 A and have a low polarity.Preliminary experiments showed us that marked ethylene production is associated with the oleanimin effect, whereas no significant ethylene is produced by auxin application alone at the optimal concentration for growth of pea stem sections. The relationship of ethylene production to growth has been investigated by many workers with various organs of plants as noted in the review by Pratt and Goeschl (38), but some inconsistencies remain. Burg and Burg (5, 7) and Chadwick and Burg (9) showed that the inhibitory effect of supraoptimal concentration of IAA on the growth of pea stem and root was attributable to the auxin-induced ethylene, while Andreae et al.(2) postulated that it was unlikely that ethylene can play more than a minor role in mediating inhibition of pea root growth by IAA. According to Holm and Abeles (15) ethylene was partially responsible for the inhibition of elongation that occurred at supraoptimal concentrations of 2,4-D applied to excised soybean stems.Penny and Stowe (37), having demonstrated the stimulating effect of oleanimins on respiration, noted that the similar concentrations and chemistry of effective molecules, along with other facts, suggested that there is only one site at which oleanimins act to increase both growth and respiration. Since a high rate of ethylene production is often accompanied by raised respiration in various phenomena such as fruit ripening (4), wounding (31, 32), physiological disorder (20), etc., it could be that the effect of oleanimins on growth is a result of respiratorily enhanced ethylene synthesis followed by ethyleneregulated growth.In this study, the kinetics of growth and ethylene production of pea stem sections were examined, concurrently with the requirements of oleanimin-induced ethylene production, and the effects of ethylene on growth, in order to establish if oleanimin action can be attributed to the effects of ethylene.MATERIALS AND METHODS Bioassay. Progress No. 9 dwarf peas (Pisum sativum L.) were soaked in a thin layer of water for about 6 hr and grown on vermiculite under weak continuous red light at 25 C. On the 7th day after soaking, 10-mm sections were cut from the third internode 2.5 mm below apical hooks which had just reached a 900 angle. Ten randomized sections were placed in 20 ml of solution in a 10-cm Petri dish for each test. The basal medium used contained 1.5% sucrose, 5 mm KH,PO, (pH 5.5

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Effects of Wounding on Respiration and Ethylene Production by Cantaloupe Fruit Tissue

Cited by 61 publications

References 15 publications

Investigation of Respiratory and Ion Transport Properties of Aging Bean Stem Slices

Investigation of Respiratory and Ion Transport Properties of Aging Bean Stem Slices

Ethylene Production by Slices of Green Banana Fruit and Potato Tuber Tissue During The Development of Induced Respiration

Probing a Membrane Matrix Regulating Hormone Action

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