scholarly journals Jasmonic Acid Methyl Ester Induces Xylogenesis and Modulates Auxin-Induced Xylary Cell Identity with NO Involvement

2019 ◽  
Vol 20 (18) ◽  
pp. 4469 ◽  
Author(s):  
Federica Della Rovere ◽  
Laura Fattorini ◽  
Marilena Ronzan ◽  
Giuseppina Falasca ◽  
Maria Maddalena Altamura ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Jasmonic Acid ◽  
Acid Methyl Ester ◽  
Adventitious Rooting ◽  
Wild Type ◽  
No Donors ◽  
Identity Studies ◽  
Acid Methyl ◽  
Jasmonic Acid Methyl Ester ◽  
Indole 3 Acetic Acid

In Arabidopsis basal hypocotyls of dark-grown seedlings, xylary cells may form from the pericycle as an alternative to adventitious roots. Several hormones may induce xylogenesis, as Jasmonic acid (JA), as well as indole-3-acetic acid (IAA) and indole-3-butyric acid (IBA) auxins, which also affect xylary identity. Studies with the ethylene (ET)-perception mutant ein3eil1 and the ET-precursor 1-aminocyclopropane-1-carboxylic acid (ACC), also demonstrate ET involvement in IBA-induced ectopic metaxylem. Moreover, nitric oxide (NO), produced after IBA/IAA-treatments, may affect JA signalling and interact positively/negatively with ET. To date, NO-involvement in ET/JA-mediated xylogenesis has never been investigated. To study this, and unravel JA-effects on xylary identity, xylogenesis was investigated in hypocotyls of seedlings treated with JA methyl-ester (JAMe) with/without ACC, IBA, IAA. Wild-type (wt) and ein3eil1 responses to hormonal treatments were compared, and the NO signal was quantified and its role evaluated by using NO-donors/scavengers. Ectopic-protoxylem increased in the wt only after treatment with JAMe(10 μM), whereas in ein3eil1 with any JAMe concentration. NO was detected in cells leading to either xylogenesis or adventitious rooting, and increased after treatment with JAMe(10 μM) combined or not with IBA(10 μM). Xylary identity changed when JAMe was applied with each auxin. Altogether, the results show that xylogenesis is induced by JA and NO positively regulates this process. In addition, NO also negatively interacts with ET-signalling and modulates auxin-induced xylary identity.

Effect of jasmonic acid–methyl ester on the composition of carbohydrates and germination of yellow lupine (Lupinus luteus L.) seeds

2010 ◽  
Vol 167 (12) ◽  
pp. 967-973 ◽  
Author(s):  
Kazimierz Zalewski ◽  
Bartosz Nitkiewicz ◽  
Lesław B. Lahuta ◽  
Katarzyna Głowacka ◽  
Aleksander Socha ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Jasmonic Acid ◽  
Acid Methyl Ester ◽  
Lupinus Luteus ◽  
Acid Methyl ◽  
Jasmonic Acid Methyl Ester ◽  
Yellow Lupine

scholarly journals Use of Fatty Acid Methyl Ester Profiles to Compare Copper-Tolerant and Copper-Sensitive Strains of Pantoea ananatis

2007 ◽  
Vol 97 (10) ◽  
pp. 1298-1304 ◽  
Author(s):  
C. Nischwitz ◽  
R. Gitaitis ◽  
H. Sanders ◽  
D. Langston ◽  
B. Mullinix ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Methyl Ester ◽  
Acid Methyl Ester ◽  
Wild Type ◽  
Pantoea Ananatis ◽  
Sulfate Pentahydrate ◽  
Acid Methyl ◽  
Copper Sulfate Pentahydrate ◽  
Copper Tolerant ◽  
Tolerant Clones

A survey was conducted to evaluate differences in fatty acid methyl ester (FAME) profiles among strains of Pantoea ananatis, causal agent of center rot of onion (Allium cepa), isolated from 15 different onion cultivars in three different sites in Georgia. Differences in FAME composition were determined by plotting principal components (PCs) in two-dimensional plots. Euclidean distance squared (ED2) values indicated a high degree of similarity among strains. Plotting of PCs calculated from P. ananatis strains capable of growing on media amended with copper sulfate pentahydrate (200 μg/ml) indicated that copper-tolerant strains grouped into tight clusters separate from clusters formed by wild-type strains. However, unlike copper-sensitive strains, the copper-tolerant strains tended to cluster by location. A total of 80, 60, and 73% of the strains from Tift1, Tift2, and Tattnall, respectively, exhibited either confluent growth or partial growth on copper-amended medium. However, all strains were sensitive to a mixture of copper sulfate pentahydrate (200 μg/ml) and maneb (40 μg/ml). When copper-tolerant clones were analyzed and compared with their wild-type parents, in all cases the plotting of PCs developed from copper-tolerant clones formed tight clusters separate from clusters formed by the parents. Eigenvalues generated from these tests indicated that two components provided a good summary of the data, accounting for 98, 98, and 96% of the standardized variance for strains Pna 1-15B, Pna 1-12B, and Pna 2-5A, respectively. Furthermore, feature 4 (cis-9-hexadecenoic acid/2-hydroxy-13-methyltetradecanoic acid) and feature 7 (cis-9/trans-12/cis-7-octadecenoic acid) were the highest or second highest absolute values for PC1 in all three strains of the parents versus copper-tolerant clones, and hexadecanoic acid was the highest absolute value for PC2 in all three strains. Along with those fatty acids, dodecanoic acid and feature 3 (3-hydroxytetradecanoic acid/14-methylpentadecenoic acid) also had an impact on the differences observed between copper-sensitive parents and copper-resistant mutants. Finding these changes in bacterial fatty acid composition could lead to the development of a laboratory assay to identify copper-tolerant strains using gas chromatography as well as providing clues to further elucidate the mode of action of copper tolerance.

The possible action mechanisms of indole-3-acetic acid methyl ester in Arabidopsis

2007 ◽  
Vol 27 (3) ◽  
pp. 575-584 ◽  
Author(s):  
Linchuan Li ◽  
Xianhui Hou ◽  
Tomohiko Tsuge ◽  
Maoyu Ding ◽  
Takashi Aoyama ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Methyl Ester ◽  
Acid Methyl Ester ◽  
Action Mechanisms ◽  
Acid Methyl ◽  
Indole 3 Acetic Acid
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