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Int. J. Mol. Sci. 2013, 14(9), 17744-17766;

Citrus Leaf Volatiles as Affected by Developmental Stage and Genetic Type

Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
Author to whom correspondence should be addressed.
Received: 23 April 2013 / Revised: 19 August 2013 / Accepted: 21 August 2013 / Published: 29 August 2013
(This article belongs to the Section Biochemistry, Molecular and Cellular Biology)
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Major volatiles from young and mature leaves of different citrus types were analyzed by headspace-solid phase microextraction (HS-SPME)-GC-MS. A total of 123 components were identified form nine citrus cultivars, including nine aldehydes, 19 monoterpene hydrocarbons, 27 oxygenated monoterpenes, 43 sesquiterpene hydrocarbons, eight oxygenated sesquiterpenes, two ketones, six esters and nine miscellaneous. Young leaves produced higher amounts of volatiles than mature leaves in most cultivars. The percentage of aldehyde and monoterpene hydrocarbons increased, whilst oxygenated monoterpenes and sesquiterpenes compounds decreased during leaf development. Linalool was the most abundant compound in young leaves, whereas limonene was the chief component in mature ones. Notably, linalool content decreased, while limonene increased, during leaf development in most cultivars. Leaf volatiles were also affected by genetic types. A most abundant volatile in one or several genotypes can be absent in another one(s), such as limonene in young leaves of lemon vs. Satsuma mandarin and β-terpinene in mature leaves of three genotypes vs. the other four. Compositional data was subjected to multivariate statistical analysis, and variations in leaf volatiles were identified and clustered into six groups. This research determining the relationship between production of major volatiles from different citrus varieties and leaf stages could be of use for industrial and culinary purposes. View Full-Text
Keywords: volatiles; young leaf; mature leaf; citrus types; GC-MS volatiles; young leaf; mature leaf; citrus types; GC-MS

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Azam, M.; Jiang, Q.; Zhang, B.; Xu, C.; Chen, K. Citrus Leaf Volatiles as Affected by Developmental Stage and Genetic Type. Int. J. Mol. Sci. 2013, 14, 17744-17766.

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