The effect of Aminooxyacetic acid on ethylene production induced by methyl jasmonate in tomatoes

1990 ◽  
Vol 32 (3) ◽  
pp. 218-222 ◽  
Author(s):  
M. Saniewski ◽  
J. Czapski
Keyword(s):  
Methyl Jasmonate ◽  
Ethylene Production ◽  
Aminooxyacetic Acid

Ethylene production and post-pollination development in Dendrobium flowers treated with foreign pollen

2001 ◽  
Vol 28 (5) ◽  
pp. 409 ◽  
Author(s):  
Saichol Ketsa ◽  
Kanokporn Bunya-atichart ◽  
Wouter G. van Doorn
Keyword(s):  
Carboxylic Acid ◽  
Ethylene Production ◽  
Acc Synthase ◽  
Aminooxyacetic Acid ◽  
Foreign Pollen ◽  
Incompatible Pollen ◽  
Ovary Growth

Dendrobium ‘Pompadour’ flowers fade early following pollination. This is associated with increased ethylene production and early epinasty. These effects are also produced by application of 1-aminocyclopropane-1-carboxylic acid (ACC) on the stigma. Pollen (one anther each) from Ruellia tuberosa L. (Acanthaceae) and Caesalpinia pulcherrima (L.) Sw. (Fabaceae) also increased ethylene production and caused early epinasty and fading. Pollen of Hibiscus schizopetalus (Mast.) Hook.f. (Malvaceae), in contrast, had no effect. R. tuberosa pollen increased ACC concentration and ACC synthase activity of the orchid flowers. Aminooxyacetic acid (AOA) pretreatment prior to R. tuberosa pollination prevented early fading, epinasty and the increase in ethylene production. It also prevented the increase in ACC concentration, and ACC synthase activity. Ovary growth was stimulated by Dendrobium ‘Pompadour’ pollinia, not by any of the incompatible pollen. Applied ACC did not promote ovary growth. It is concluded that incompatible pollen can hasten senescence and epinasty by increasing ACC synthase activity and ethylene production. Ovary growth, in contrast, is apparently not primarily regulated by ethylene.

Regulation of ethylene production and ripening by saskatoon (Amelanchier alnifolia Nutt.) fruit

1998 ◽  
Vol 76 (10) ◽  
pp. 1743-1754
Author(s):  
Suzy Y Rogiers ◽  
GN Mohan Kumar ◽  
N Richard Knowles
Keyword(s):  
Ethylene Production ◽  
Acc Oxidase ◽  
Fold Increase ◽  
Dry Weight ◽  
Oxidase Inhibitor ◽  
Aminooxyacetic Acid ◽  
Acid Oxidase ◽  
Amelanchier Alnifolia ◽  
Endogenous Ethylene ◽  
Maturity Class

Changes in respiration and ethylene production were characterized during maturation and ripening of saskatoon (Amelanchier alnifolia Nutt.) fruit. On a per fruit basis, respiration and ethylene production increased 78 and 400%, respectively, as fruit ripened on the plant and trends were consistent with those for climacteric fruits. When estimated on a fresh and dry weight basis, increased rates of ethylene production were still apparent during ripening; however, respiration rate declined. Trends in respiration rates and endogenous ethylene levels of harvested fruit of nine maturity classes, from immature green (class one) to fully ripe and purple (class nine), were consistent with those of fruit growing on the plant. Tissue prints showed that ACC (1-aminocyclopropane-1-carboxylic acid) oxidase was distributed throughout the pericarp of fruit at all nine maturity stages and that the enzyme was most concentrated in the immature stages on a per fruit basis. On a protein basis, ACC oxidase increased progressively with development of cv. Smoky fruit but remained relatively constant over the nine maturity classes of cv. Northline fruit. In contrast, ACC oxidase levels were relatively low in cv. Pembina fruit over the first four maturity classes, increased substantially as fruits developed from class four to five, then remained constant as fruit ripened to maturity class nine. Treating immature harvested Pembina fruit (maturity classes one to three) with ACC effected a 28- to 108-fold increase in ethylene production, compared with an average of only 7-fold for ACC-treated fruit of maturity classes four through nine. Preharvest treatment of class-three fruit with ACC induced ripening to maturity class eight within 5 days, while untreated fruit required 15 days to reach class eight. Vacuum infiltrating class four fruit with alpha-aminooxyacetic acid (AOA) or aminoethoxyvinyl glycine (AVG) inhibited ethylene production and color development substantially. The inhibiting effect of AOA on ripening was eliminated when fruit were infiltrated with equimolar concentrations of AOA and ACC. Cobalt, an ACC oxidase inhibitor, also inhibited ethylene production and ripening. Collectively, our results indicate that ethylene synthesis by preclimacteric fruit is limited by the availability of ACC, ethylene is responsible for initiating ripening, and thus, saskatoon fruit are climacteric.Key words: Amelanchier alnifolia, saskatoon, fruit ripening, ethylene.

scholarly journals Effects of methyl jasmonate and gums formed in stone fruit trees on in vitro ethylene production by mycelium of verticillium dahliae and alternaria alternata

2013 ◽  
Vol 21 (2) ◽  
pp. 87-93
Author(s):  
Elżbieta Węgrzynowicz-Lesiak ◽  
Anna Jarecka Boncela ◽  
Justyna Góraj ◽  
Marian Saniewski
Keyword(s):  
Methyl Jasmonate ◽  
Verticillium Dahliae ◽  
Ethylene Production ◽  
Alternaria Alternata ◽  
Pathogenic Fungi ◽  
Fruit Trees ◽  
Stone Fruit ◽  
Mycelium Growth

ABSTRACT The knowledge about the role of jasmonates in ethylene production by pathogenic fungi is ambiguous. In this study, we describe the effect of methyl jasmonate (JA-Me) and gums formed in stone fruit trees on the growth and in vitro ethylene production by mycelium of Verticillium dahliae and Alternaria alternata. Methyl jasmonate at concentrations of 100, 250 and 500 μg·cm-3 inhibited the mycelium growth of V. dahliae and A. alternata, proportionally to the concentrations used. After 8 days of incubation, JA-Me at concentration of 500 μg·cm-3 limited the area of mycelium of these pathogens by 7-8 times but did not entirely inhibited the pathogen growth. Addition of gums produced by trees of cherry and peach to a medium containing 40 μg·cm-3 JA-Me did not influence the mycelium growth of V. dahliae, but gums of plum and apricot trees stimulated mycelium growth, in comparison to JA-Me only. Methyl jasmonate at concentrations of 2 and 40 μg·cm-3 stimulated the ethylene production by mycelium of V. dahliae and A. alternata. It is possible that methyl jasmonate stimulated ethylene production in mycelium of these pathogens through interaction with some fractions of galactans formed during hydrolysis of agar. The lack of interaction of JA-Me with polysaccharides of stone fruit trees gums concerning ethylene production was documented and it needs further explanation.

Effects of Methyl Jasmonate on Anthocyanin Accumulation, Ethylene Production, and CO2 Evolution in Uncooled and Cooled Tulip Bulbs

1998 ◽  
Vol 17 (1) ◽  
pp. 33-37 ◽  
Author(s):  
M. Saniewski ◽  
A. Miszczak ◽  
L. Kawa-Miszczak ◽  
E. Wegrzynowicz-Lesiak ◽  
K. Miyamoto ◽  
...  
Keyword(s):  
Methyl Jasmonate ◽  
Ethylene Production ◽  
Co2 Evolution ◽  
Anthocyanin Accumulation ◽  
Tulip Bulbs

scholarly journals Ripening of ‘Kumagai’ guavas and anthracnose control as affected by methyl jasmonate

Bragantia ◽  
2017 ◽  
Vol 76 (1) ◽  
pp. 167-176
Author(s):  
Barbara Marçon Pereira da Silva ◽  
Raquel Mantovani Binoti ◽  
Patrícia Cia ◽  
Sílvia Regina de Toledo Valentini ◽  
Ilana Urbano Bron
Keyword(s):  
Relative Humidity ◽  
Methyl Jasmonate ◽  
Fruit Ripening ◽  
Ethylene Production ◽  
Colletotrichum Gloeosporioides ◽  
Psidium Guajava ◽  
Defense System ◽  
Ripe Stage ◽  
Air Circulation

ABSTRACT Methyl jasmonate (MJ) is an endogenous regulator that can influence fruit ripening and the defense system against pathogens. This work verified the influence of this regulator on postharvest physiology, control of anthracnose and physicalchemical attributes of ‘Kumagai’ guava (Psidium guajava L.). Guavas harvested at mature-green and ripe stages were treated with 0, 1 and 10 μmol∙L−1 MJ as gas in hermetic containers (200 L) with air circulation for 24 h. Fruit were inoculated with Colletotrichum gloeosporioides spore suspension (105 spores∙mL−1) 24 and 48 h after treatment. During ripening, at 25 °C and 80 – 90% of relative humidity, respiration, ethylene production, anthracnose incidence, severity and quality of guavas were assayed. Data were subjected to analysis of variance and means, compared by Tukey’s test (p ≤ 0.05 and 0.10). The application of 1 and 10 μmol∙L−1 MJ had little influence on ripening of ‘Kumagai’ guava with a slight increase in respiration, ethylene production and yellowing of fruit harvested at ripe stage. Treatments with 1 and 10 μmol∙L−1 MJ did not reduce the severity and incidence of C. gloeosporioides when applied in fruit harvested at ripe and mature-green stages and inoculated 24 or 48 h after MJ treatment. In conclusion, the MJ treatment, at 1 and 10 μmol∙L−1 concentrations, had little influence on ripening and did not control anthracnose in ‘Kumagai’ guavas.

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