Exogenous Application of Methyl Jasmonate Alters Pinus resinosa Seedling Response to Simulated Frost
Author ORCID Identifier
Document Type
Article
Publication Title
Botany
Abstract
Physical stresses, such as exposure to cold, can affect plant recruitment, survival, and demography. The ability of plants to tolerate physical stress, however, may depend upon the co-occurrence of other stresses. For example, although plants undergo physiological changes to increase defense against herbivores, it is unknown whether chemical signaling associated with herbivory can alter plant tolerance to cold. We tested the hypothesis that both tissue removal and chemical induction (via exogenous application of 1 mmol/L methyl jasmonate [MeJA]) would alter cold tolerance of seedlings of Pinus resinosa Aiton. Application of MeJA resulted in 18% less foliar tissue damage compared with the control plants (estimated via foliar electrolyte leakage) following a simulated frost. Leaf tissue removal similarly limited the extent of cold damage on P. resinosa seedlings. Growth in seedlings not treated with MeJA was slower than that of seedlings treated with MeJA following exposure to the simulated frost. Our work indicates that secondary responses via MeJA induction can alter tree seedling response to cold and may (i) help explain natural patterns of variation in plant performance, and (ii) be leveraged to facilitate agricultural plant tolerance to physical stresses under increasingly variable climate conditions.
Pages
705-10
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DOI
https://doi.org/10.1139/cjb-2018-0108
Volume
96
Issue
10
Publication Date
10-2018
Keywords
cold stress, cross-talk, electrolyte leakage, winter climate change
Disciplines
Biology
ISSN
1916-2790
Recommended Citation
Connolly, Brian M. and Orrock, John L., "Exogenous Application of Methyl Jasmonate Alters Pinus resinosa Seedling Response to Simulated Frost" (2018). Biology Faculty Scholarship. 7.
https://repository.gonzaga.edu/biologyschol/7
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This Postprint manuscript has been accepted for publication. The Version of Record is available from:
Connolly, and Orrock. Exogenous application of methyl jasmonate alters Pinus resinosa seedling response to simulated frost, Botany (Volume 96, Issue 10) pp. 705-10. Copyright © [2018] (Authors). DOI: 10.1139/cjb-2018-0108.
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