Effects of shoot bending on ACC content, ethylene production, growth and flowering of bougainvillea

2010 ◽  
Vol 63 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Fang-Yin Liu ◽  
Yu-Sen Chang
Keyword(s):  
Ethylene Production ◽  
Production Growth ◽  
Acc Content ◽  
Shoot Bending

Lack of visible post-pollination effects in pollen grains of two Dendrobium cultivars: relationship with pollinia ACC, pollen germination, and pollen tube growth

2008 ◽  
Vol 35 (2) ◽  
pp. 152 ◽  
Author(s):  
Kanjana Luangsuwalai ◽  
Saichol Ketsa ◽  
Apinya Wisutiamonkul ◽  
Wouter G. van Doorn
Keyword(s):  
Pollen Tube ◽  
Ethylene Production ◽  
Pollen Tube Growth ◽  
Pollen Germination ◽  
Flower Colour ◽  
Pollen Grains ◽  
The Other ◽  
Tube Growth ◽  
Colour Changes ◽  
Acc Content

Dendrobium flowers, pollinated with pollinia from individuals of the same cultivar or other cultivars, usually show rapid post-pollination effects such as floral epinasty, a change in flower colour and early perianth senescence. However, pollination with the pollinia of cv. Karen or cv. Kenny flowers did not produce these effects. We compared these two cultivars with cvv. Pompadour, Willie and Sakura, and tested the hypotheses that the differences were related to levels of 1-aminocyclopropane-1-carboxylic acid (ACC) in the pollinia, ethylene production by the pollinated flower, pollen germination, or pollen tube growth. The pollinia of cvv. Karen and Kenny contained as much ACC as the pollinia of cv. Pompadour, but less than the pollinia of cvv. Willie and Sakura. Ethylene production after pollination with cvv. Karen and Kenny pollinia was much lower than after pollination with pollinia from the other cultivars tested. The pollen grains showed normal germination, but cvv. Karen and Kenny pollen grains exhibited much less tube growth than those of the other cultivars. Pollen tube growth in cv. Pompadour was positively affected by ethylene. Ethylene was required and sufficient for the induction of epinasty, rapid perianth colour changes and early perianth senescence, very similar to the changes after pollination. The absence of these effects after pollination with cvv. Kenny and Karen seems to be due to the low ethylene production induced by the pollinia of these cultivars. This low ethylene production could not be accounted for by the ACC content in the pollinia of cvv. Kenny and Karen.

scholarly journals THE EFFECT OF POLYAMINES ON THE SENESCENCE OF CARNATION PETALS.

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 617d-617
Author(s):  
Ki-Cheol Son ◽  
Y. Chae
Keyword(s):  
Ethylene Production ◽  
Dianthus Caryophyllus ◽  
Acc Synthase ◽  
The Other ◽  
Fresh Weight ◽  
Exact Role ◽  
High Concentrations ◽  
Acc Content ◽  
Carnation Petals

The interaction between polyamines and ethylene is still not clear for floral tissues. The aim of the present paper is to examine the senescence on the isolated petals of carnation (Dianthus caryophyllus cv. Desio) but not the whole flower in an attempt to clarify the exact role of polyamines. Petals were treated with putrescine (Put; 0.0, 1.0, 10mM), spermidine (Spd; 0.0, 1.0, 10mM), spermine (Spn; 0.0, 1.0, 10mM), Put+Spd (1.0mM), Put+Spn (1.0mM). The fresh weight of petals in all 10mM treatment was decreased less than those in the other treatments at all times but there were no significant differences. The differences in ethylene production were significant. In petals maintained in 10mM of polyamines, ethylene production was completely inhibited until 13 days and senescence was considerably retarded. However, ethylene productions in 1.0mM polyamines treatments were delayed 2-3 days with reduced amounts. These results suggest that high concentrations of polyamines retard senescence and completely inhibit ethylene production. ACC content, activities of ACC synthase and SAM decarboxylase were analyzed. Finally, the role of SAM in ethylene and polyamines biosynthesis will be discussed.

scholarly journals Melatonin enhances salt tolerance by promoting MYB108A-mediated ethylene biosynthesis in grapevines

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Lili Xu ◽  
Guangqing Xiang ◽  
Qinghua Sun ◽  
Yong Ni ◽  
Zhongxin Jin ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Ethylene Production ◽  
Abiotic Stress Tolerance ◽  
Ethylene Biosynthesis ◽  
Signal Molecules ◽  
Melatonin Treatment ◽  
Tobacco Plants ◽  
Exogenous Treatment ◽  
Acc Content ◽  
Endogenous Induction

Abstract The signal molecules melatonin and ethylene play key roles in abiotic stress tolerance. The interplay between melatonin and ethylene in regulating salt tolerance and the underlying molecular mechanism of this interplay remain unclear. Here, we found that both melatonin and 1-aminocyclopropane-1-carboxylic acid (ACC, a precursor of ethylene) enhanced the tolerance of grapevine to NaCl; additionally, ethylene participated in melatonin-induced salt tolerance. Further experiments indicated that exogenous treatment and endogenous induction of melatonin increased the ACC content and ethylene production in grapevine and tobacco plants, respectively. The expression of MYB108A and ACS1, which function as a transcription factor and a key gene involved in ethylene production, respectively, was strongly induced by melatonin treatment. Additionally, MYB108A directly bound to the promoter of ACS1 and activated its transcription. MYB108A expression promoted ACC synthesis and ethylene production by activating ACS1 expression in response to melatonin treatment. The suppression of MYB108A expression partially limited the effect of melatonin on the induction of ethylene production and reduced melatonin-induced salt tolerance. Collectively, melatonin promotes ethylene biosynthesis and salt tolerance through the regulation of ACS1 by MYB108A.

Ethylene production, ACC content, PAL and POD activities in excised sections of straight and bent gerbera scapes

1995 ◽  
Vol 70 (3) ◽  
pp. 409-416 ◽  
Author(s):  
F. Mencarelli ◽  
R. Agostini ◽  
R. Botondi ◽  
R. Massantini
Keyword(s):  
Ethylene Production ◽  
Acc Content

scholarly journals Influence of Short-term Treatment with High CO2 and N2 on Ethylene Biosynthesis in Tomato Fruit

HortScience ◽  
1998 ◽  
Vol 33 (1) ◽  
pp. 103-104
Author(s):  
Hirofumi Terai ◽  
Hironobu Tsuchida ◽  
Masashi Mizuno ◽  
Noriyoshi Matsui
Keyword(s):  
Carboxylic Acid ◽  
Ethylene Production ◽  
Tomato Fruit ◽  
Acc Oxidase ◽  
Ethylene Biosynthesis ◽  
Term Treatment ◽  
Short Term ◽  
Short Term Treatment ◽  
High Co2 ◽  
Acc Content

Tomato fruit were given a short-term (24 h) high CO2 (80%) or N2 (100%) treatment and then transferred to air storage at 20 °C. The CO2 treatment stimulated ACC oxidase activity and ethylene production, whereas the N2 treatment increased ACC content but did not increase ethylene production. Both CO2, and N2 treatments delayed ripening for one day, but fruit ripened normally. Although short-term 80% CO2, had a stimulating effect, and 100 % N2 had no effect on ethylene production, ripening was delayed slightly by both treatments. Chemical name used: 1-aminocyclopropane-1-carboxylic acid (ACC).

Pre-harvest Application of Putrescine Influences Japanese Plum Fruit Ripening and Quality

2010 ◽  
Vol 16 (1) ◽  
pp. 53-64 ◽  
Author(s):  
A.S. Khan ◽  
Zora Singh
Keyword(s):  
Ascorbic Acid ◽  
Respiration Rate ◽  
Fruit Ripening ◽  
Ethylene Production ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Fruit Softening ◽  
Total Carotenoids ◽  
Japanese Plum ◽  
Acc Content

To investigate the role of pre-harvest application of putrescine (PUT) in regulating fruit ripening and quality of early-, mid- and late-season maturing Japanese plum fruit, whole trees were sprayed with an aqueous solution containing PUT (0, 0.1, 1.0 and 2.0 mM) one week before anticipated commercial harvest for each cultivar separately. The PUT (2.0 mM) treatment reduced the respiration rate and ethylene production more than untreated fruit during fruit ripening at ambient temperature (20±1 °C). Activities of ACS and ACO enzymes, and ACC content were delayed and suppressed in all plum cultivars and these effects were more pronounced with higher PUT concentrations. PUT application reduced the fruit softening, soluble solids content, titratable acidity ratio, the levels of ascorbic acid, total carotenoids and total antioxidants in all plum cultivars. ‘Black Amber’ did not exhibit any change in fruit color parameters, while, PUT application to ‘Amber Jewel’ and ‘Angelino’ fruit, delayed the changes in chroma value and hue angle during fruit ripening. In conclusion, pre-harvest application of 2.0 mM PUT delayed the fruit ripening with reduced respiration rate, ethylene production, activities of ACS and ACO enzymes, ACC content, fruit softening, levels of ascorbic acid, total carotenoids and total antioxidants in Japanese plum.

scholarly journals Ethylene and Polyamine Metabolism in Climacteric and Nonclimacteric Carnation Flowers

HortScience ◽  
1991 ◽  
Vol 26 (7) ◽  
pp. 894-896 ◽  
Author(s):  
M. Serrano ◽  
F. Romojaro ◽  
J.L. Casas ◽  
M. Acosta
Keyword(s):  
Carboxylic Acid ◽  
Ethylene Production ◽  
Dianthus Caryophyllus ◽  
Fold Increase ◽  
The Other ◽  
Polyamine Metabolism ◽  
Initial Value ◽  
Low Level ◽  
Acc Content

We have compared the ethylene and polyamine metabolism of senescing flowers from two cultivars of carnation (Dianthus caryophyllus L.), one showing climacteric (`Arthur') and the other non climacteric behavior (`Killer'). `Arthur' carnations showed the first symptoms of senescence at day 7, coinciding with maximum ethylene and CO2 production, a peak in the ethylene-forming enzyme (EFE) activity, and a 7-fold increase in free ACC content in respect to the initial value. In `Killer' carnations, however, onset of senescence was 15 days after harvest, and no ethylene or CO2 peak was detected. The lack of ethylene production was due to a constantly low level of free ACC and a low EFE activity. Free polyamine distribution was similar in the two cultivars at the preclimacteric stage, with the spermidine content being about three times that of putrescine. But as senescence progressed, this situation was reversed in `Arthur' carnation, with a predominance of putrescine during the senescence, while it was maintained in `Killer', with no significant changes during senescence. No free spermine was found at any stage of senescence in either cultivar. Thus, a correlation exists between ACC level, distribution of polyamides, and longevity of cut carnation flowers. Chemical name used: 1-aminocyclopropane-1-carboxylic acid (ACC).

scholarly journals Glutamic Acid and 5-Aminolevulinic Acid May Function as Precursors of System II Ethylene in Ripening Tomato Fruit

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 641d-641
Author(s):  
H.P.V. Rupasinghe ◽  
Richard J. Gladon
Keyword(s):  
Glutamic Acid ◽  
Incubation Period ◽  
Ethylene Production ◽  
Aminolevulinic Acid ◽  
Tomato Fruit ◽  
Citrate Buffer ◽  
Tomato Fruit Ripening ◽  
Buffer Control ◽  
Ripe Stage ◽  
Acc Content

The ethylene biosynthetic pathway has been established as methionine (MET) to S-adenosylmethionine to 1-aminocyclopropane-1-carboxylic acid (ACC) to ethylene, and this pathway has been labeled System I. Another pathway to ethylene may exist during synthesis of massive amounts of ethylene, and this system has been labeled System II. Our objective was to evaluate the efficacy of several compounds as possible precursors of System II ethylene in ripening tomato fruit tissue. Discs of `Rutgers' tomato pericarp tissue at the mature green, pink, and red ripe stages were incubated continuously in 10, 25, or 40 mm solutions of MET, ACC, 5-aminolevulinic acid (ALA), homocysteine, glutamic acid (GLU), alpha-ketoglutarate, or citrate buffer (control). The ethylene production rate at 8-hour intervals during a 32-hour incubation period and free and conjugated ACC content at the end of the incubation period were quantified. Fruit discs at the mature green stage treated with MET and ACC exhibited increased ethylene production and increased free ACC content. These results confirmed the role of MET and ACC as the predominant precursors of ethylene during the early stages of fruit development in tomato (System I). At the pink stage (System II); however, ALA increased ethylene production by 75% and free ACC content by 46% over the control, and MET increased ethylene by 27% and free ACC content by 57% over the control. At the red ripe stage, ALA caused a 35% increase and GLU caused a 31% increase in ethylene production over the control. These results suggest that ALA and GLU may be metabolized to ethylene via an unknown pathway during tomato fruit ripening (System II).

Sign in / Sign up

Export Citation Format

Share Document