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Herbivore‐induced and constitutive volatiles are controlled by different oxylipin‐dependent mechanisms in rice
Mujiono, Kadis Tohi, Tilisa Sobhy, Islam S. Hojo, Yuko Shinya, Tomonori Galis, Ivan
Mujiono, Kadis
Tohi, Tilisa
Sobhy, Islam S.
Hojo, Yuko
Shinya, Tomonori
Galis, Ivan
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2021-06-10
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Abstract
Despite the importance of volatile organic compounds (VOCs) for plants, control mechanisms for their basal and stress-induced biosynthesis and release remain unclear. We sampled and characterized headspace and internal leaf volatile pools in rice (Oryza sativa), after a simulated herbivory treatment, which triggers an endogenous jasmonate burst. Certain volatiles, such as linalool, were strongly upregulated by simulated herbivory stress. In contrast, other volatiles, such as β-caryophyllene, were constitutively emitted and fluctuated according to time of day. Transcripts of the linalool synthase gene transiently increased 1-3 h after exposure of rice to simulated herbivory, whereas transcripts of caryophyllene synthase peaked independently at dawn. Unexpectedly, although emission and accumulation patterns of rice inducible and constitutive VOCs were substantially different, both groups of volatiles were compromised in jasmonate-deficient hebiba mutants, which lack the allene oxide cyclase (AOC) gene. This suggests that rice employs at least two distinct oxylipin-dependent mechanisms downstream of AOC to control production of constitutive and herbivore-induced volatiles. Levels of the JA precursor, 12-oxo-phytodienoic acid (OPDA), were correlated with constitutive volatile levels suggesting that OPDA or its derivatives could be involved in control of volatile emission in rice.
Citation
Mujiono, K., Tohi, T., Sobhy, I. S., Hojo, Y., Shinya, T., & Galis, I. (2021). Herbivore‐induced and constitutive volatiles are controlled by different oxylipin‐dependent mechanisms in rice. Plant Cell & Environment, 44(8), 2687-2699. https://doi.org/10.1111/pce.14126
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Wiley
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Plant Cell & Environment
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Article
Language
en
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This is the peer reviewed version of the following article: [Mujiono, K., Tohi, T., Sobhy, I. S., Hojo, Y., Shinya, T., & Galis, I. (2021). Herbivore‐induced and constitutive volatiles are controlled by different oxylipin‐dependent mechanisms in rice. Plant Cell & Environment, 44(8), 2687-2699], which has been published in final form at [https://doi.org/10.1111/pce.14126]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
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ISSN
0140-7791
EISSN
1365-3040
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IsDB 4 in 1 Project by Ministry of Research, Technology, and Higher Education, Republic of Indonesia; Japan International Cooperation Agency; Japan Society for the Promotion of Science, Grant/Award Numbers: 16K08143, 18K05558, 24570026, P13379; Ohara Foundation, Grant/Award Number: N/A