Green leaf volatiles: biosynthesis, biological functions and their applications in biotechnology

Naeem-ul-Hassan, Muhammad; Zainal, Zamri; Ismail, Ismanizan

doi:10.1111/pbi.12368

Cited by 137 publications

(116 citation statements)

References 171 publications

(175 reference statements)

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“…C6 volatile compounds are direct products from the LOX-HPL pathway with LOX, HPL, ADH and alcohol acyl transferases (AAT) involved as key enzymes [36]. Figure 4 displays the expression level of major genes involved in GLVs accumulation.…”

Section: Resultsmentioning

confidence: 99%

Varietal Dependence of GLVs Accumulation and LOX-HPL Pathway Gene Expression in Four Vitis vinifera Wine Grapes

et al. 2016

IJMS

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Variety is one of the major factors influencing grape and wine aromatic characteristics. Green leaf volatiles (GLVs), derived from lipoxygenase-hydroperoxides lyase (LOX-HPL) pathway, are important components for the aromatic quality of grapes and wines. However, the varietal difference regarding GLVs accumulation and related gene expression are poorly studied. This work exhibited that the accumulation of various GLVs and the expression of LOX-HPL pathway genes in four Vitis vinifera wine grape cultivars: Syrah, Muscat Tchervine, Gewürztraminer and Chardonnay. The results showed a variety dependence of GLVs profile. Muscat Tchervine harvested grapes contained less C6 aldehydes and the most abundant esters, which corresponded to very low VvLOXA and VvHPL1 expression abundance as well as high VvAAT transcript in this variety. High expression level of both VvLOXA and VvHPL1 paralleled with higher level of C6 aldehydes together with higher alcohols in Syrah grape. Gewürztraminer and Chardonnay grapes had high aldehydes and alcohols as well as low esters, which were resulted from their higher expression level of VvLOXA or VvHPL1 and lower VvAAT. From these above corresponding relations, it is concluded that VvLOXA, VvHPL1 and VvAAT in the LOX-HPL pathway are targets for altering GLVs composition in the grape varieties.

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Section: Resultsmentioning

confidence: 99%

Varietal Dependence of GLVs Accumulation and LOX-HPL Pathway Gene Expression in Four Vitis vinifera Wine Grapes

et al. 2016

IJMS

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“…This figure focuses on the formation of the most abundant unsaturated C6‐volatiles. For more detailed information on the biosynthesis of GLVs, see recent reviews (Mwenda & Matsui, ; ul Hassan et al ., ). Molecular oxygen is introduced into α‐linolenic acid and the resulting hydroperoxide (13(S)‐hydroperoxy‐9Z,11E,15Z‐octadecatrienoic acid; 13‐HPOT) is cleaved into a C12‐(9 Z ‐traumatin) and a C6‐( Z ‐3‐hexenal) compound.…”

Section: Biosynthesismentioning

confidence: 99%

Green leaf volatile production by plants: a meta‐analysis

et al. 2017

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Summary666I.Introduction667II.Biosynthesis667III.Meta‐analysis669IV.The type of stress influences the total amount of GLVs released669V.Herbivores can modulate the wound‐induced release of GLVs669VI.Fungal infection greatly induces GLV production672VII.Monocots and eudicots respond differentially to different types of stress673VIII.The type of stress does not influence the proportion of GLVs per chemical class673IX.The type of stress does influence the isomeric ratio within each chemical class674X.GLVs: from signal perception to signal transduction676XI.GLVs influence the C/N metabolism677XII.Interaction with plant hormones678XIII.General conclusions and unanswered questions678Acknowledgements679References679 Summary Plants respond to stress by releasing biogenic volatile organic compounds (BVOCs). Green leaf volatiles (GLVs), which are abundantly produced across the plant kingdom, comprise an important group within the BVOCs. They can repel or attract herbivores and their natural enemies; and they can induce plant defences or prime plants for enhanced defence against herbivores and pathogens and can have direct toxic effects on bacteria and fungi. Unlike other volatiles, GLVs are released almost instantly upon mechanical damage and (a)biotic stress and could thus function as an immediate and informative signal for many organisms in the plant's environment. We used a meta‐analysis approach in which data from the literature on GLV production during biotic stress responses were compiled and interpreted. We identified that different types of attackers and feeding styles add a degree of complexity to the amount of emitted GLVs, compared with wounding alone. This meta‐analysis illustrates that there is less variation in the GLV profile than we presumed, that pathogens induce more GLVs than insects and wounding, and that there are clear differences in GLV emission between monocots and dicots. Besides the meta‐analysis, this review provides an update on recent insights into the perception and signalling of GLVs in plants.

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“…The production of GLV in plants is considerably complex and may be influenced by many factors (Hassan et al 2015a). Nevertheless, these data contribute to understanding more about the involvement of KFB-type F-box proteins in plant stress responses, especially in the production of GLV.…”

Section: Resultsmentioning

confidence: 99%

Expression profile of gene encoding Kelch repeat containing F-box protein (PmF-box1) in relation to the production of green leaf volatiles

Othman¹,

Zainal²,

Kiat

et al. 2017

Aust J Crop Sci

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Persicaria minor is one of the native aromatic plants in Malaysia and widely used in traditional foods and medicines. Previous studies have shown that treatment of P. minor with jasmonic acid upregulated genes involved in the secondary metabolites production and also gene encoding an F-box protein named PmFbox-1. It is known that F-box proteins play important roles in gene expression regulatory. However, the function of PmF-box1 protein is still unknown. In this study, the full length cDNA sequence of PmF-box1, with NCBI accession number JQ429325, consisting of 2768 bp was isolated followed by characterization of the deduced protein sequence of 487 amino acids. The putative F-box protein belongs to Kelch repeat-containing F-box protein family (KFB) and has a moderate level of homology with other F-box proteins from different organisms, showing a maximum identity score of 60 % with an F-box motif and two conserved kelch repeat motifs. Time course semi-quantitative reverse-transcriptase PCR gel image analyses showed that PmF-box1 was induced after JA treatment, indicating that PmF-box1 is a JA inducible gene. PmF-box1 also differentially expressed in different tissues after treatment with JA, indicating a spatial regulation of its activity. Interestingly, there was high correlation in the expression pattern between PmF-box1 and PmADH1 (P. minor Alcohol dehydrogenase 1) (R= 0.90 ± 0.05) after treatment with 150 µM JA, indicating that PmF-box1 possibly involves in regulating the activity of PmADH1. The content of hexanal was significantly increased in JA-treated plants and even higher in JA plus SA-treated plants. The level of six carbon alcohols was increased at 48 hours after JA treatment, consistent with the upregulation of PmADH1 in JA treated plants. These results suggest that PmF-box1 encodes a KFB-type F-box protein that may be involved in plant stress signaling by influencing the expression of PmADH1; thus, modulating the production of green leaf volatiles.

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Green leaf volatiles: biosynthesis, biological functions and their applications in biotechnology

Cited by 137 publications

References 171 publications

Varietal Dependence of GLVs Accumulation and LOX-HPL Pathway Gene Expression in Four Vitis vinifera Wine Grapes

Varietal Dependence of GLVs Accumulation and LOX-HPL Pathway Gene Expression in Four Vitis vinifera Wine Grapes

Green leaf volatile production by plants: a meta‐analysis

Expression profile of gene encoding Kelch repeat containing F-box protein (PmF-box1) in relation to the production of green leaf volatiles

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