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JA-Ile-macrolactone 5b Induces Tea Plant ( Camellia sinensis ) Resistance to Both Herbivore Ectropis obliqua and Pathogen Colletotrichum camelliae
Jasmonates (JAs), the group of lipid-derived hormones, were found to control the defense responses in a myriad of plants. Meaningfully, the macrolactones of 12-hydroxy jasmonate isoleucine (12OH-JA-Ile) were reported to induce the defensive response of wild tobacco. However, little to nothing has be...
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Published in: | International journal of molecular sciences 2020-03, Vol.21 (5), p.1828 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Jasmonates (JAs), the group of lipid-derived hormones, were found to control the defense responses in a myriad of plants. Meaningfully, the macrolactones of 12-hydroxy jasmonate isoleucine (12OH-JA-Ile) were reported to induce the defensive response of wild tobacco. However, little to nothing has been known about the elicitation effect of JA-Ile-macrolactones on woody plants to harmful organisms, let alone its underlying mechanisms. Here, we first optimized the synthetic routine using mild toxic reagent isobutyl chloroformate instead of ethyl chloroformate for conjugation, and we used acetonitrile (MeCN) instead of ethyl alcohol for the better dissolution of
-toluenesulfonic acid (
-TsOH) to gain JA-Ile-macrolactones. JA-Ile-macrolactone
-treated tea plants significantly inhibited the larvae weight gain of
larvae and the lesions caused by
. Furthermore, the expression level of
was significantly upregulated in
-treated leaves. Meanwhile,
reduced the accumulation of eriodictyol 7-O-glucuronide (EDG) in tea plants, which was confirmed to promote the growth rate of
larvae by artificial diet assay. In conclusion, our study proved that the exogenous application of
could induce the tea plant resistance both to herbivore
and pathogen
, and EDG was identified as one of the secondary metabolites that could influence the growth rate of
, but it did not directly influence the infection of
. Further research should be carried out to clarify the mechanism through which
induces tea plant resistance to
. |
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ISSN: | 1422-0067 1661-6596 1422-0067 |
DOI: | 10.3390/ijms21051828 |