Metabolic changes in Citrus leaf volatiles in response to environmental stress
| Autor: | Tetsuya Matsukawa, Tomonori Asai, Shin'ichiro Kajiyama |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
0301 basic medicine Citrus Defence mechanisms Bioengineering Cyclopentanes Biology Environment 01 natural sciences Applied Microbiology and Biotechnology Environmental stress Hexanal 03 medical and health sciences chemistry.chemical_compound Metabolomics Stress Physiological Botany Oxylipins Aldehydes Volatile Organic Compounds Jasmonic acid food and beverages Plant Leaves 030104 developmental biology chemistry Gas chromatography Salicylic Acid Sesquiterpenes Citrus × sinensis Salicylic acid 010606 plant biology & botany Biotechnology |
| Zdroj: | Journal of bioscience and bioengineering. 121(2) |
| ISSN: | 1347-4421 |
| Popis: | Citrus plants are well known as a rich source of VOCs, and several have important roles in defense responses. However, how VOCs are regulated in response to environmental stress is not yet well understood. In this study, we investigated dynamic changes of VOCs present in leaves of seven Citrus species (Citrus sinensis, C. limon, C. paradisi, C. unshiu, C. kinokuni, C. grandis, and C. hassaku) in response to mechanical wounding, jasmonic acid (JA), and salicylic acid (SA) as determined by gas chromatography/mass spectrometric analysis followed by multivariate analysis (principal component analysis, PCA, and orthogonal partial least squares-discriminant analysis, OPLS-DA). PCA and OPLS-DA suggested that changes in VOC profiles against stress stimuli were much diverse among Citrus species. OPLS-DA showed that C6 volatiles, such as hexanal and trans-2-hexenal, were induced in response to JA and SA stimuli in C. sinensis and C. grandis, while the other VOCs were decreased under all tested stress conditions. α-Farnesene was induced in all species except C. hassaku after wounding or JA treatment. In addition, α-farnesene was also induced in response to SA stimuli in C. unshiu and C. kinokuni. Therefore these volatiles can be candidates of the common stress biomarkers in Citrus. Our results will give a new insight into defense mechanisms in Citrus species. |
| Databáze: | OpenAIRE |
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