scholarly journals Metabolic Studies with Banana Fruit Slices II. Effects of Inhibitors on Respiration, Ethylene Production, and Ripening

1971 ◽  
Vol 24 (4) ◽  
pp. 1103 ◽  
Author(s):  
WB Mcglasson ◽  
JK Palmer ◽  
M Vendrell ◽  
CJ Brady
Keyword(s):  
Protein Synthesis ◽  
Aqueous Solutions ◽  
Ethylene Production ◽  
Banana Fruit ◽  
Metabolic Studies ◽  
Potential Inhibitors ◽  
Green Banana

Transverse slices of green banana fruit were vacuum� infiltrated with aqueous solutions of 24 potential inhibitors of protein synthesis, respiration, or ethylene production. The effects of these compounds were examined in the absence or presence of 10 p.p.m. ethylene. Of the compounds which produced marked effects mono� fiuoroacetate, 4�hydroxy�2�oxoglutarate (HKG), KCN, and cycloheximide were examined in more detail.

scholarly journals Metabolic Studies with Banana Fruit Slices I. Changes in the Incorporation of 14c Labelled Compounds in Response to Cutting

1971 ◽  
Vol 24 (1) ◽  
pp. 7 ◽  
Author(s):  
WB Mcglasson ◽  
JK Palmer M Vendrell ◽  
CJ Brady
Keyword(s):  
Aqueous Solutions ◽  
Banana Fruit ◽  
Metabolic Studies ◽  
Green Banana

Transverse slices of green banana fruit were vacuum-infiltrated with aqueous solutions of 14C-labelled metabolites and the non-metabolite a-methyl-D-glucoside immediately after cutting, and at 17 hr after cutting-i.e. near the peak of "induced" respiration.

scholarly journals Reversion of Senescence: Effects of 2,4-Dichlorophenoxyacetic Acid and Indoleacetic Acid on Respiration, Ethylene Production, and Ripening of Banana Fruit Slices

1969 ◽  
Vol 22 (3) ◽  
pp. 601 ◽  
Author(s):  
M Vendrell
Keyword(s):  
Aqueous Solutions ◽  
Ethylene Production ◽  
Indoleacetic Acid ◽  
Dichlorophenoxyacetic Acid ◽  
Banana Fruit ◽  
Unripe Fruit ◽  
2,4 Dichlorophenoxyacetic Acid

Slices cut from green, unripe fruit were treated by infiltration with aqueous solutions of 2,4�dichlorophenoxyacetic acid (2,4�D) and indoleacetic acid (lAA). 2,4.D delayed but increased the size of those peaks in respiration and ethylene production which are induced by cutting; ripening was also delayed. These effects were proportional to concentrations of 2,4.D in the range 1O-LlO-3M. Higher concentrations caused injury.

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

1969 ◽  
Vol 22 (2) ◽  
pp. 489 ◽  
Author(s):  
WB Mcglasson
Keyword(s):  
Ethylene Production ◽  
Plant Tissues ◽  
Underground Storage ◽  
Banana Fruit ◽  
Physiological Changes ◽  
Tissue Slices ◽  
Tuber Tissue ◽  
Plant Parts ◽  
Storage Organs ◽  
Green Banana

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.

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

1970 ◽  
Vol 23 (5) ◽  
pp. 1133 ◽  
Author(s):  
M Vendrell
Keyword(s):  
Aqueous Solutions ◽  
Ethylene Production ◽  
Indoleacetic Acid ◽  
Dichlorophenoxyacetic Acid ◽  
Banana Fruit ◽  
Control Fruit ◽  
Accelerated Ripening ◽  
Internal Distribution ◽  
2,4 Dichlorophenoxyacetic Acid

Bananas 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.

Geographic expansion of banana Blood disease in Southeast Asia

Plant Disease ◽  
2021 ◽  
Author(s):  
Jane Denise Ray ◽  
Siti Subandiyah ◽  
Vivian A Rincon-Florez ◽  
Ady B Prakoso ◽  
Wayan I Mudita ◽  
...  
Keyword(s):  
Southeast Asia ◽  
Rapid Expansion ◽  
Single Infection ◽  
Banana Fruit ◽  
Long Distance ◽  
Banana Production ◽  
Blood Disease ◽  
Infection Source ◽  
Banana Variety ◽  
Green Banana

Blood disease in bananas caused by Ralstonia syzygii subsp. celebesensis is a bacterial wilt causing significant crop losses in Indonesia and Malaysia. Disease symptoms include wilting of the plant and red brown vascular staining, internal rot, and discoloration of green banana fruit. There is no known varietal resistance to this disease in the Musa genus, although variation in susceptibility has been observed, with the popular Indonesian cooking banana variety Kepok being highly susceptible. This study established the current geographic distribution of Blood disease in Indonesia and confirmed the pathogenicity of isolates by Koch's Postulates. The long-distance distribution of the disease followed an arbitrary pattern indicative of human-assisted movement of infected banana materials. In contrast, local or short distance spread radiated from a single infection source, indicative of dispersal by insects and possibly contaminated tools, water or soil. The rapid expansion of its geographical range makes Blood disease an emerging threat to banana production in Southeast Asia and beyond.

scholarly journals Temporal Relationship between Ester Biosynthesis and Ripening Events in Bananas

2002 ◽  
Vol 127 (6) ◽  
pp. 998-1005 ◽  
Author(s):  
Sastry Jayanty ◽  
Jun Song ◽  
Nicole M. Rubinstein ◽  
Andrés Chong ◽  
Randolph M. Beaudry
Keyword(s):  
Chlorophyll Fluorescence ◽  
Ethylene Production ◽  
Temporal Relationship ◽  
Photochemical Efficiency ◽  
Acc Oxidase ◽  
Ethylene Biosynthesis ◽  
Banana Fruit ◽  
Coa Transferase ◽  
Ester Biosynthesis ◽  
Natural Ester

The temporal relationship between changes in ethylene production, respiration, skin color, chlorophyll fluorescence, volatile ester biosynthesis, and expression of ACC oxidase (ACO) and alcohol acyl-CoA transferase (AAT) in ripening banana (Musa L. spp., AAA group, Cavendish subgroup. `Valery') fruit was investigated at 22 °C. Ethylene production rose to a peak a few hours after the onset of its logarithmic phase; the peak in production coincided with maximal ACO expression. The respiratory rise began as ethylene production increased, reaching its maximum ≈30 to 40 hours after ethylene production had peaked. Green skin coloration and photochemical efficiency, as measured by chlorophyll fluorescence, declined simultaneously after the peak in ethylene biosynthesis. Natural ester biosynthesis began 40 to 50 hours after the peak in ethylene biosynthesis, reaching maximal levels 3 to 4 days later. While AAT expression was detected throughout, the maximum level of expression was detected at the onset of natural ester biosynthesis. The synthesis of unsaturated esters began 100 hours after the peak in ethylene and increased with time, suggesting the lipoxygenase pathway be a source of ester substrates late in ripening. Incorporation of exogenously supplied ester precursors (1-butanol, butyric acid, and 3-methyl-1-butanol) in the vapor phase into esters was maturity-dependent. The pattern of induced esters and expression data for AAT suggested that banana fruit have the capacity to synthesize esters over 100 hours before the onset of natural ester biosynthesis. We hypothesize the primary limiting factor in ester biosynthesis before natural production is precursor availability, but, as ester biosynthesis is engaged, the activity of alcohol acyl-CoA transferase the enzyme responsible for ester biosynthesis, exerts a major influence.

scholarly journals Inhibition of Ethylene Production in Banana Fruit Tissue by Ethylene Treatment

1971 ◽  
Vol 24 (4) ◽  
pp. 885 ◽  
Author(s):  
M Vendrell ◽  
WB Mcglasson
Keyword(s):  
Ethylene Production ◽  
Banana Fruit ◽  
Duration Of Treatment ◽  
Fruit Tissue ◽  
Ethylene Treatment ◽  
Chlorophyll Breakdown ◽  
Endogenous Ethylene ◽  
Exogenous Ethylene

A temporary ethylene treatment, sufficient to stimulate ripening in banana fruit tissue, partly suppresses endogenous ethylene production and the evolution of ethylene from methionine. The production of endogenous ethylene does not return to rates normal for naturally ripening fruit after the exogenous ethylene is removed. The extent of inhibition is related to the concentration of applied ethylene up to 5-10 p.p.m., and to the duration of treatment within the period 12 hI' to 3 days. Other characteristics of ripening appear to develop normally, except in the shorter treatments, where respiration shows a lower climacteric peak and chlorophyll breakdown is delayed.

An increase in protein synthesis during ripening of the banana fruit

1970 ◽  
Vol 9 (5) ◽  
pp. 1037-1047 ◽  
Author(s):  
C.J. Brady ◽  
James K. Palmer ◽  
P.B.H. O'Connell ◽  
Robert M. Smillie
Keyword(s):  
Protein Synthesis ◽  
Banana Fruit
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