Inhibitory Effects of Methyl Jasmonate on the Germination and Ethylene Production in Cocklebur Seeds

1998 ◽  
Vol 17 (1) ◽  
pp. 13-18 ◽  
Author(s):  
M. Nojavan-Asghari ◽  
K. Ishizawa
Keyword(s):  
Methyl Jasmonate ◽  
Ethylene Production ◽  
Inhibitory Effects

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.

Sign in / Sign up

Export Citation Format

Share Document