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Comparative analysis of sorghum (C4) and rice (C3) plant headspace volatiles induced by artificial herbivory

Osinde, Cyprian, Sobhy, Islam S. ORCID:, Wari, David, Dinh, Son Truong, Hojo, Yuko, Osibe, Dandy A., Shinya, Tomonori, Tugume, Arthur K., Nsubuga, Anthony M. and Galis, Ivan 2023. Comparative analysis of sorghum (C4) and rice (C3) plant headspace volatiles induced by artificial herbivory. Plant Signaling & Behavior 18 (1) , 2243064. 10.1080/15592324.2023.2243064

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Acute stress responses include release of defensive volatiles from herbivore-attacked plants. Here we used two closely related monocot species, rice as a representative C3 plant, and sorghum as a representative C4 plant, and compared their basal and stress-induced headspace volatile organic compounds (VOCs). Although both plants emitted similar types of constitutive and induced VOCs, in agreement with the close phylogenetic relationship of the species, several mono- and sesquiterpenes have been significantly less abundant in headspace of sorghum relative to rice. Furthermore, in spite of generally lower VOC levels, some compounds, such as the green leaf volatile (Z)-3-hexenyl acetate and homoterpene DMNT, remained relatively high in the sorghum headspace, suggesting that a separate mechanism for dispersal of these compounds may have evolved in this plant. Finally, a variable amount of several VOCs among three sorghum cultivars of different geographical origins suggested that release of VOCs could be used as a valuable resource for the increase of sorghum resistance against herbivores.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Publisher: Taylor and Francis Group
ISSN: 1559-2324
Funders: Japan Society for Pro-motion of Science (JSPS) in Japan
Date of First Compliant Deposit: 11 August 2023
Date of Acceptance: 25 July 2023
Last Modified: 16 Jan 2024 15:24

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