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Volume 23
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Article

Effect of Drought and Methyl Jasmonate Treatment on Primary and Secondary Isoprenoid Metabolites Derived from the MEP Pathway in the White Spruce Picea glauca

by
Erica Perreca
1,*,
Franziska Eberl
1,2,
Maricel Valeria Santoro
1,
Louwrance Peter Wright
3,
Axel Schmidt
1 and
Jonathan Gershenzon
1
1
Max Planck Institute for Chemical Ecology, 07745 Jena, Germany
2
Faculty of Biological Sciences, Friedrich Schiller University, 07745 Jena, Germany
3
Zeiselhof Research Farm, Pretoria 0102, South Africa
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2022, 23(7), 3838; https://doi.org/10.3390/ijms23073838
Submission received: 22 February 2022 / Revised: 23 March 2022 / Accepted: 28 March 2022 / Published: 30 March 2022
(This article belongs to the Special Issue Environmental Stress and Plants 2.0)
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Abstract

White spruce (Picea glauca) emits monoterpenes that function as defensive signals and weapons after herbivore attack. We assessed the effects of drought and methyl jasmonate (MeJA) treatment, used as a proxy for herbivory, on monoterpenes and other isoprenoids in P. glauca. The emission of monoterpenes was significantly increased after MeJA treatment compared to the control, but drought suppressed the MeJA-induced increase. The composition of the emitted blend was altered strongly by stress, with drought increasing the proportion of oxygenated compounds and MeJA increasing the proportion of induced compounds such as linalool and (E)-β-ocimene. In contrast, no treatment had any significant effect on the levels of stored monoterpenes and diterpenes. Among other MEP pathway-derived isoprenoids, MeJA treatment decreased chlorophyll levels by 40%, but had no effect on carotenoids, while drought stress had no impact on either of these pigment classes. Of the three described spruce genes encoding 1-deoxy-D-xylulose-5-phosphate synthase (DXS) catalyzing the first step of the MEP pathway, the expression of only one, DXS2B, was affected by our treatments, being increased by MeJA and decreased by drought. These findings show the sensitivity of monoterpene emission to biotic and abiotic stress regimes, and the mediation of the response by DXS genes.
Keywords: biotic stress; abiotic stress; monoterpene; diterpene; carotenoid; chlorophyll; abscisic acid; jasmonic acid biotic stress; abiotic stress; monoterpene; diterpene; carotenoid; chlorophyll; abscisic acid; jasmonic acid

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MDPI and ACS Style

Perreca, E.; Eberl, F.; Santoro, M.V.; Wright, L.P.; Schmidt, A.; Gershenzon, J. Effect of Drought and Methyl Jasmonate Treatment on Primary and Secondary Isoprenoid Metabolites Derived from the MEP Pathway in the White Spruce Picea glauca. Int. J. Mol. Sci. 2022, 23, 3838. https://doi.org/10.3390/ijms23073838

AMA Style

Perreca E, Eberl F, Santoro MV, Wright LP, Schmidt A, Gershenzon J. Effect of Drought and Methyl Jasmonate Treatment on Primary and Secondary Isoprenoid Metabolites Derived from the MEP Pathway in the White Spruce Picea glauca. International Journal of Molecular Sciences. 2022; 23(7):3838. https://doi.org/10.3390/ijms23073838

Chicago/Turabian Style

Perreca, Erica, Franziska Eberl, Maricel Valeria Santoro, Louwrance Peter Wright, Axel Schmidt, and Jonathan Gershenzon. 2022. "Effect of Drought and Methyl Jasmonate Treatment on Primary and Secondary Isoprenoid Metabolites Derived from the MEP Pathway in the White Spruce Picea glauca" International Journal of Molecular Sciences 23, no. 7: 3838. https://doi.org/10.3390/ijms23073838

APA Style

Perreca, E., Eberl, F., Santoro, M. V., Wright, L. P., Schmidt, A., & Gershenzon, J. (2022). Effect of Drought and Methyl Jasmonate Treatment on Primary and Secondary Isoprenoid Metabolites Derived from the MEP Pathway in the White Spruce Picea glauca. International Journal of Molecular Sciences, 23(7), 3838. https://doi.org/10.3390/ijms23073838

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