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Sulfur volatiles in guava (Psidium guajava L.) leaves: possible defense mechanism.
J Agric Food Chem. 2008 Oct 08; 56(19):8905-10.JA

Abstract

Volatiles from crushed and intact guava leaves (Psidium guajava L.) were collected using static headspace SPME and determined using GC-PFPD, pulsed flame photometric detection, and GC-MS. Leaf volatiles from four common citrus culitvars were examined similarly to determine the potential component(s) responsible for guava's protective effect against the Asian citrus psyllid (Diaphorina citri Kuwayama), which is the insect vector of Huanglongbing (HLB) or citrus greening disease. Seven sulfur volatiles were detected: hydrogen sulfide, sulfur dioxide, methanethiol, dimethyl sulfide (DMS), dimethyl disulfide (DMDS), methional, and dimethyl trisulfide (DMTS). Identifications were based on matching linear retention index values on ZB-5, DB-Wax, and PLOT columns and MS spectra in the case of DMDS and DMS. DMDS is an insect toxic, defensive volatile produced only by wounded guava but not citrus leaves and, thus, may be the component responsible for the protective effect of guava against the HLB vector. DMDS is formed immediately after crushing, becoming the major headspace volatile within 10 min. Forty-seven additional leaf volatiles were identified from LRI and MS data in the crushed guava leaf headspace.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Rouseff RL
Institute of Food and Agricultural Sciences, University of Florida, Citrus Research and Education Center, Lake Alfred, Florida 33850, USA. rrouseff@ufl.edu
Onagbola EO
No affiliation info available
Smoot JM
No affiliation info available
Stelinski LL
No affiliation info available

MeSH

DisulfidesGas Chromatography-Mass SpectrometryKineticsMass SpectrometryPlant LeavesPsidiumSulfur CompoundsVolatilization

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18778077

Citation

Rouseff, Russell L., et al. "Sulfur Volatiles in Guava (Psidium Guajava L.) Leaves: Possible Defense Mechanism." Journal of Agricultural and Food Chemistry, vol. 56, no. 19, 2008, pp. 8905-10.
Rouseff RL, Onagbola EO, Smoot JM, et al. Sulfur volatiles in guava (Psidium guajava L.) leaves: possible defense mechanism. J Agric Food Chem. 2008;56(19):8905-10.
Rouseff, R. L., Onagbola, E. O., Smoot, J. M., & Stelinski, L. L. (2008). Sulfur volatiles in guava (Psidium guajava L.) leaves: possible defense mechanism. Journal of Agricultural and Food Chemistry, 56(19), 8905-10. https://doi.org/10.1021/jf801735v
Rouseff RL, et al. Sulfur Volatiles in Guava (Psidium Guajava L.) Leaves: Possible Defense Mechanism. J Agric Food Chem. 2008 Oct 8;56(19):8905-10. PubMed PMID: 18778077.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sulfur volatiles in guava (Psidium guajava L.) leaves: possible defense mechanism. AU - Rouseff,Russell L, AU - Onagbola,Ebenezer O, AU - Smoot,John M, AU - Stelinski,Lukasz L, Y1 - 2008/09/09/ PY - 2008/9/10/pubmed PY - 2008/12/20/medline PY - 2008/9/10/entrez SP - 8905 EP - 10 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 56 IS - 19 N2 - Volatiles from crushed and intact guava leaves (Psidium guajava L.) were collected using static headspace SPME and determined using GC-PFPD, pulsed flame photometric detection, and GC-MS. Leaf volatiles from four common citrus culitvars were examined similarly to determine the potential component(s) responsible for guava's protective effect against the Asian citrus psyllid (Diaphorina citri Kuwayama), which is the insect vector of Huanglongbing (HLB) or citrus greening disease. Seven sulfur volatiles were detected: hydrogen sulfide, sulfur dioxide, methanethiol, dimethyl sulfide (DMS), dimethyl disulfide (DMDS), methional, and dimethyl trisulfide (DMTS). Identifications were based on matching linear retention index values on ZB-5, DB-Wax, and PLOT columns and MS spectra in the case of DMDS and DMS. DMDS is an insect toxic, defensive volatile produced only by wounded guava but not citrus leaves and, thus, may be the component responsible for the protective effect of guava against the HLB vector. DMDS is formed immediately after crushing, becoming the major headspace volatile within 10 min. Forty-seven additional leaf volatiles were identified from LRI and MS data in the crushed guava leaf headspace. SN - 1520-5118 UR - https://www.unboundmedicine.com/medline/citation/18778077/Sulfur_volatiles_in_guava__Psidium_guajava_L___leaves:_possible_defense_mechanism_ L2 - https://doi.org/10.1021/jf801735v DB - PRIME DP - Unbound Medicine ER -