scholarly journals Stimulation of ethylene production in detached rice leaves by vanadate

1996 ◽  
Vol 18 (3) ◽  
pp. 161-164 ◽  
Author(s):  
Ching Huei Kao
Keyword(s):  
Ethylene Production ◽  
Rice Leaves ◽  
Stimulation Of

scholarly journals Tolerance of Cherimoya (Annona cherimola Mill.) to Cold Storage

1994 ◽  
Vol 119 (3) ◽  
pp. 524-528 ◽  
Author(s):  
Rafael Alique ◽  
José P. Zamorano ◽  
Ma Luisa Calvo ◽  
Carmen Merodio ◽  
José L. De la Plaza
Keyword(s):  
Cold Storage ◽  
Ethylene Production ◽  
Soluble Sugar ◽  
Chilling Injury ◽  
Ethylene Synthesis ◽  
Ripe Fruit ◽  
Acid Accumulation ◽  
Ripe Stage ◽  
Lower Temperature ◽  
Stimulation Of

`Fino de Jete' cherimoya fruit were stored at 20, 10, 8, or 6C, 80% relative humidity. Two rises of CO2 production and an ethylene rise following the first peak of respiration were obtained in fruit held at 20C. The ripe stage coincided with the onset of the second respiratory rise. Soluble sugar and organic acid concentration were maximal, and flesh firmness was 18 N in ripe fruit. Lower temperature reduced respiration rate and ethylene production; however, some stimulation of ethylene synthesis was observed at 10C. Cherimoyas ripened to edible condition during 6 days at 10C, but fruit maintained at 8C for up to 12 days required transfer to 20C to ripen properly. Our results suggest that high increases in CO2 are not sufficient to complete cherimoya fruit ripening without the concurrent rise in ethylene production. Citric acid accumulation, inhibition of ethylene synthesis, and reduced accumulation of sucrose were observed during storage at 6C. Removal to 20C after 12 days at 6C resulted in no ripening, almost complete inhibition of ethylene synthesis, and severe skin browning. Thus, 8C is the lowest tolerable temperature for prolonged cold storage of cherimoya `Fino de Jete'. Fruit can be held at 8C for up to 12 days without damage from chilling injury.

Investigations of nitrogenase activity in rheotrophic peat

1976 ◽  
Vol 22 (10) ◽  
pp. 1561-1566 ◽  
Author(s):  
George John Waughman
Keyword(s):  
Ethylene Production ◽  
Acetylene Reduction ◽  
Nitrogenase Activity ◽  
Anaerobic Bacteria ◽  
Organic Soils ◽  
Nitrogen Fixing ◽  
Anaerobic Conditions ◽  
Time Courses ◽  
Aerobic And Anaerobic ◽  
Stimulation Of

Acetylene reduction by the peat microflora was unaffected by light, but was sensitive to temperature, with an optimum of about 30 °C. The nitrogenase was inactivated by exposure to temperatures above about 35 °C. Activity occurred in completely anaerobic conditions; the rate of ethylene production was of the order of 0.5 nmol C2H4 ml−1h−1. Experiments with time courses indicated that exposure to oxygen caused an initial inhibition of activity followed by a period in which ethylene production was stimulated to rates much higher than in the anaerobic tests; both the inhibition and stimulation appeared to be related to the level of oxygenation. It is suggested that these results could be explained by the existence of nitrogen-fixing associations of aerobic and anaerobic bacteria in the peat. The stimulation of activity caused by exposure to air indicates that care must be taken when interpreting results of the assay obtained from waterlogged organic soils.

Breaking the apple embryo dormancy by nitric oxide involves the stimulation of ethylene production

Planta ◽  
2007 ◽  
Vol 225 (4) ◽  
pp. 1051-1057 ◽  
Author(s):  
Agnieszka Gniazdowska ◽  
Urszula Dobrzyńska ◽  
Tomasz Babańczyk ◽  
Renata Bogatek
Keyword(s):  
Nitric Oxide ◽  
Ethylene Production ◽  
Embryo Dormancy ◽  
Apple Embryo ◽  
Stimulation Of

scholarly journals Rabbiteye Blueberry Postharvest Fruit Quality and Stimulation of Ethylene Production by 1-Methylcyclopropene

HortScience ◽  
2011 ◽  
Vol 46 (9) ◽  
pp. 1278-1281 ◽  
Author(s):  
Dan D. MacLean ◽  
D. Scott NeSmith
Keyword(s):  
Ethylene Production ◽  
Room Temperature ◽  
Soluble Solids ◽  
Treatment Recommendation ◽  
Total Acidity ◽  
Minimal Effect ◽  
Fruit Maturation ◽  
Stage Of Development ◽  
Climacteric Stage ◽  
Stimulation Of

A postharvest 1-methylcyclopropene (1-MCP) treatment was evaluated for its ability to maintain firmness and delay the ripening of rabbiteye blueberries. Three cultivars, Austin, Brightwell, and Premier, were harvested by hand from the UGA Alapaha Blueberry Farm and treated overnight with 1 μL·L−1 1-MCP as field heat was being removed [0 to 1 °C, 90% to 95% relative humidity (RH)]. Fruit were evaluated for firmness, total soluble solids (TSS), total acidity (TA), ethylene production, and other quality attributes at 0, 1, and 2 weeks after harvest as well as 1 or 4 days post-removal evaluations at room temperature (≈21 °C). In general, the 1-MCP treatment resulted in the stimulation of ethylene production in all three cultivars but had minimal effect on TSS and TA content. Furthermore, the treatment resulted in an accelerated loss of firmness in ‘Brightwell’. The lack of inhibition of fruit ripening likely related to the fact that blueberries were harvested, and subsequently treated with 1-MCP, at a post-climacteric stage of development. Based on current results, more information is required regarding ethylene production during rabbiteye blueberry fruit maturation before establishing a 1-MCP treatment recommendation for use by the rabbiteye blueberry industry.

On the promotion of senescence in Brassica oleracea var. capitata by Alternaria brassicicola and by Botrytis cinerea

1979 ◽  
Vol 57 (21) ◽  
pp. 2378-2386 ◽  
Author(s):  
P. A. Poapst ◽  
B. Anne Ramsoomair ◽  
C. O. Gourley
Keyword(s):  
Carbon Dioxide ◽  
Gibberellic Acid ◽  
Brassica Oleracea ◽  
Botrytis Cinerea ◽  
Ethylene Production ◽  
Ferrous Sulfate ◽  
Potassium Salt ◽  
Alternaria Brassicicola ◽  
Stimulation Of ◽  
Floating Leaf

Alternaria brassicicola and Botrytis cinerea stimulated ethylene production in closed culture with floating leaf discs from cabbage (Brassica oleracea var. capitata). Production with A. brassicicola had an observed maximum at 18 °C and was speeded by preculturing the fungus on media containing cabbage components, but which contained little or no methionine.In the absence of cabbage tissue, both organisms demonstrated a latent capacity to generate ethylene from closed shake cultures of Czapek's medium containing L-methionine. With A. brassicicola in a modified Czapek's medium (minus ferrous sulfate) containing 10−3 ML-methionine, there was a stimulation of ethylene production at 18 °C by the addition of Fe2+, Fe3+, Cu2+, ca. 8% carbon dioxide, or the potassium salt of gibberellic acid (GA3). With B. cinerea, 4% carbon dioxide was stimulatory, 29% carbon dioxide was inhibitory, whereas less than 4% oxygen arrested the production of ethylene completely for 48 h.Results suggest that the nature of parasitism of A. brassicicola and B. cinerea on cabbage is characterized by a latent capability to cause the production of, and to produce, the plant-senescing hormone ethylene.

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