scholarly journals Glutathione regulates ACC synthase transcription via WRKY33 and ACC oxidase by modulating mRNA stability to induce ethylene synthesis during stress

2015 ◽  
pp. pp.01543.2015 ◽  
Author(s):  
Riddhi Datta ◽  
Deepak Kumar ◽  
Asma Sultana ◽  
Saptarshi Hazra ◽  
Dipto Bhattacharyya ◽  
...  
Keyword(s):  
Mrna Stability ◽  
Acc Oxidase ◽  
Acc Synthase ◽  
Ethylene Synthesis

scholarly journals Reduced ethylene synthesis of mangoes under high CO2 atmosphere storage

2021 ◽  
Vol 43 ◽  
pp. e51540
Author(s):  
Renar João Bender ◽  
Jeffrey Karl Brecht ◽  
Steven Alonzo Sargent
Keyword(s):  
Mangifera Indica ◽  
Acc Oxidase ◽  
Acc Synthase ◽  
Ethylene Biosynthesis ◽  
Ethylene Synthesis ◽  
High Co2 ◽  
Fruit Species ◽  
Co2 Concentrations ◽  
Atmosphere Storage ◽  
Co2 Atmosphere

. High CO2 atmospheres have been reported to be accountable for slower ripening processes of many fruit species. In modified or controlled atmosphere storage of mangoes (Mangifera indica L.) delayed ripening is attributed to the effects of CO2 on ethylene biosynthesis, which is reduced under CO2 concentrations beyond 10%. In the present work the objective was to determine if those elevated CO2 atmospheres on ethylene synthesis could be attributed to the action of CO2 upon ACC oxidase. Mature green or tree ripe `Tommy Atkins` mangoes were, in four experiments, held in a flow through system of either 10 or 25% CO2 mixed to 5% O2 or only air for 14 or 21 days at 5, 8 or 12°C. Mangoes in the 25% CO2 atmosphere did not produce detectable levels of ethylene, whereas under 10% CO2 the production rates were significantly suppressed at 5 or 8°C. However, 1-aminocyclopropane-1-carboxylic acid (ACC) concentrations in mango mesocarp tissue at retrieval from storage were similar to the air controls and ACC synthase activity was not completely inhibited. The direct effects of CO2 concentrations on ACC oxidase activity is to be considered the most important factor in inhibiting ethylene biosynthesis of mangoes under 25% CO2 atmospheres.

scholarly journals Changes in the Activity and Expression of 1-Aminocyclopropane-1-Carboxylate (ACC) Synthase, ACC Oxidase, and Phenylalanine Ammonia-lyase in Asparagus Spears in Response to Wound-induced Ethylene Synthesis

HortScience ◽  
2004 ◽  
Vol 39 (5) ◽  
pp. 1074-1078 ◽  
Author(s):  
Pankaj Kumar Bhowmik ◽  
Toshiyuki Matsui
Keyword(s):  
Enzyme Activity ◽  
Ethylene Production ◽  
Phenylalanine Ammonia Lyase ◽  
Northern Blot Analysis ◽  
Acc Oxidase ◽  
Acc Synthase ◽  
The Other ◽  
Mrna Levels ◽  
Ethylene Synthesis ◽  
Enzymatic Changes

The molecular and enzymatic changes that follow harvesting of asparagus are important aspects for postharvest deterioration. To define the factors contributing to postharvest deterioration, the early changes in ethylene production and the activities and expression of 1-aminocyclopropane-1-carboxylate (ACC) synthase, ACC oxidase, and phenylalanine ammonia-lyase (PAL) were studied in whole spears and in excised top and bottom portions. As a result of wounding, ethylene production was found higher in both top and bottom portions compared with whole spears but followed the same trend reaching the peak at 16 hours after harvest. ACC synthase was rapidly induced in excised top portions but no significant ACC synthase activity was observed in excised bottom portions. In top portions, ACC synthase reached a peak 8 hours after harvest and thereafter started to decline. In contrast to ACC synthase, ACC oxidase was induced markedly in both top and bottom portions and remained high until 16 hours after excision. On the other hand, PAL greatly increased in activity in bottom portions but not in excised tops. Northern blot analysis showed that increased mRNA levels coincided well with the excision-promoted increases in enzyme activity and ethylene production.

In Silico Study of Ethylene Biosynthesis: Seeking New Effectors of ACC Synthase and ACC Oxidase

2016 ◽  
Vol 11 (3) ◽  
pp. 346-356
Author(s):  
Nada Ayadi ◽  
Sarra Aloui ◽  
Rabeb Shaiek ◽  
Oussama Rokbani ◽  
Faten Raboud ◽  
...  
Keyword(s):  
In Silico ◽  
Acc Oxidase ◽  
Acc Synthase ◽  
Ethylene Biosynthesis ◽  
In Silico Study

scholarly journals Introgression of Sub1 (SUB1) QTL in mega rice cultivars increases ethylene production to the detriment of grain- filling under stagnant flooding

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Sandhya Rani Kuanar ◽  
Kutubuddin Ali Molla ◽  
Krishnendu Chattopadhyay ◽  
Ramani Kumar Sarkar ◽  
Pravat Kumar Mohapatra
Keyword(s):  
Grain Yield ◽  
Ethylene Production ◽  
Stem Elongation ◽  
Starch Synthesis ◽  
Acc Oxidase ◽  
Acc Synthase ◽  
Grain Filling ◽  
Soluble Carbohydrates ◽  
Rice Cultivars ◽  
Oxidase Enzyme

AbstractIn the recent time, Submergence1 (Sub1)QTL, responsible for imparting tolerance to flash flooding, has been introduced in many rice cultivars, but resilience of the QTL to stagnant flooding (SF) is not known. The response of Sub1-introgression has been tested on physiology, molecular biology and yield of two popular rice cultivars (Swarna and Savitri) by comparison of the parental and Sub1-introgression lines (SwarnaSub1 and SavitriSub1) under SF. Compared to control condition SF reduced grain yield and tiller number and increased plant height and Sub1- introgression mostly matched these effects. SF increased ethylene production by over-expression of ACC-synthase and ACC-oxidase enzyme genes of panicle before anthesis in the parental lines. Expression of the genes changed with Sub1-introgression, where some enzyme isoform genes over-expressed after anthesis under SF. Activities of endosperm starch synthesizing enzymes SUS and AGPase declined concomitantly with rise ethylene production in the Sub1-introgressed lines resulting in low starch synthesis and accumulation of soluble carbohydrates in the developing spikelets. In conclusion, Sub1-introgression into the cultivars increased susceptibility to SF. Subjected to SF, the QTL promoted genesis of ethylene in the panicle at anthesis to the detriment of grain yield, while compromising with morphological features like tiller production and stem elongation.

scholarly journals cDNA Cloning of ACC Synthase and ACC Oxidase Genes in Cucumber Fruit and Their Differential Expression by Wounding and Auxin.

1998 ◽  
Vol 67 (5) ◽  
pp. 685-692 ◽  
Author(s):  
Shinjiro Shiomi ◽  
Mikihiro Yamamoto ◽  
Teiji Ono ◽  
Katsuya Kakiuchi ◽  
Junichi Nakamoto ◽  
...  
Keyword(s):  
Differential Expression ◽  
Cdna Cloning ◽  
Acc Oxidase ◽  
Acc Synthase ◽  
Cucumber Fruit

scholarly journals Expression of ACC Synthase and ACC Oxidase Genes in Different Tissues of Immature and Mature Cucumber Fruits.

1999 ◽  
Vol 68 (4) ◽  
pp. 830-832 ◽  
Author(s):  
Shinjiro Shiomi ◽  
Junichi Nakamoto ◽  
Mikihiro Yamamoto ◽  
Yasutaka Kubo ◽  
Reinosuke Nakamura ◽  
...  
Keyword(s):  
Acc Oxidase ◽  
Acc Synthase ◽  
Different Tissues

ACC Oxidase and ACC Synthase Expression Profiles after Leaning of Young Radiata (P. radiata D. Don) and Maritime Pine (P. pinaster Ait.) Seedlings

2011 ◽  
Vol 31 (3) ◽  
pp. 382-391 ◽  
Author(s):  
Patricio Ramos ◽  
Claudio Valenzuela ◽  
Gregoire le Provost ◽  
Christophe Plomion ◽  
Carlos Gantz ◽  
...  
Keyword(s):  
Expression Profiles ◽  
Acc Oxidase ◽  
Acc Synthase ◽  
Maritime Pine

scholarly journals Synergistic Effects of the Combined Application of MCP and Low O2 on Apple Fruit Ripening

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1143D-1144
Author(s):  
Mehar Asif ◽  
Prabodh Trivedi ◽  
Theophanes Solomos ◽  
Autar Mattoo
Keyword(s):  
Fruit Ripening ◽  
Similar Pattern ◽  
Synergistic Effects ◽  
Acc Oxidase ◽  
Acc Synthase ◽  
Apple Fruit ◽  
Single Application ◽  
Combined Application ◽  
Putative Receptor

We have studied the effects of MCP and low O2, applied singly and in combination, on apple fruit ripening at 1, 7, and 18 °C. The single application of 2 ppm MCP is more effective in delaying the onset of the C2H4 climacteric than is 1% O2. However, the combined application has a much larger effect than the single applications of either MCP or 1% O2. For instance, at 7 °C, the onset of the C2H4 climacteric occurs at 15, 50, and 90–95 days for the controls, 1% O2 and 2 ppm MCP, respectively, whereas the combined application of 2 ppm MCP and 1% O2 suppressed the initiation of the C2H4 climacteric for 200 days, the duration of the experiment. The retardation of the climacteric onset by the treatments is associated with the suppression of ACC-synthase (ACS1) and the putative receptor ERS1. The accumulation of their transcripts is critically dependent on the rate of C2H4 evolution. As expected, the combined application of MCP and 1% O2 completely suppressed the expression of both genes. Yet when the fruits were transferred to 18 °C in air, they ripened normally. A similar pattern of inhibition in response to the above treatments was also observed with a C2H4-dependent MAPK. The expression of ETR1, ETR2 and ACC-oxidase was not affected by the treatments. The nature of this strong effect of the combined application of MCP and low O2 is not clear. It should be pointed out that MCP does not inhibit the induction of hypoxic proteins such as ADH.

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