2021
DOI: 10.3390/plants10040785
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The Diversity of Volatile Compounds in Australia’s Semi-Desert Genus Eremophila (Scrophulariaceae)

Abstract: Australia’s endemic desert shrubs are commonly aromatic, with chemically diverse terpenes and phenylpropanoids in their headspace profiles. Species from the genus Eremophila (Scrophulariaceae ex. Myoporaceae) are the most common, with 215 recognised taxa and many more that have not yet been described, widely spread across the arid parts of the Australian continent. Over the years, our research team has collected multiple specimens as part of a survey to investigate the chemical diversity of the genus and creat… Show more

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Cited by 9 publications
(20 citation statements)
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“…In other species, the influence of biotic and abiotic factors on the composition of EOs is frequently reported in the literature [ 2 , 53 , 54 , 55 ]. Phenotypic plasticity has become a major challenge in the context of understanding correlators of chemistry to taxa [ 56 , 57 ]. Hence, tools/methodologies to evaluate and to interpret phenomena around phenoplasticity are still evolving [ 58 , 59 , 60 ].…”
Section: Introductionmentioning
confidence: 99%
“…In other species, the influence of biotic and abiotic factors on the composition of EOs is frequently reported in the literature [ 2 , 53 , 54 , 55 ]. Phenotypic plasticity has become a major challenge in the context of understanding correlators of chemistry to taxa [ 56 , 57 ]. Hence, tools/methodologies to evaluate and to interpret phenomena around phenoplasticity are still evolving [ 58 , 59 , 60 ].…”
Section: Introductionmentioning
confidence: 99%
“…Chinnock, which normally expresses a high yield of the iridoid methoxymyodesert-3-ene. However, the species is made up of several chemotypes, and one is the ngaione type [59], or types that include related furanosesquiterpenes. Because stock animals graze heavily on the species, E. deserti has been associated with animal fatalities, but the inconsistency in poisonings was a mystery until it was realized that toxicity was caused by a ngaione chemotype.…”
Section: Toxic Australian Essential Oilsmentioning
confidence: 99%
“…Because stock animals graze heavily on the species, E. deserti has been associated with animal fatalities, but the inconsistency in poisonings was a mystery until it was realized that toxicity was caused by a ngaione chemotype. The Australian desert genus Eremophila has several species that express furanosesquiterpenes like ngaione [59], and they should all be regarded as inedible.…”
Section: Toxic Australian Essential Oilsmentioning
confidence: 99%
“…While hydrodistillation requires masses of leaves, energy input, time, and effort to produce essential oils, solvent extraction requires a small leaf and a small volume of solvent (DCM, Hexane). This method was used in a chemophenetic study of heterogeneous species aggregates in Eucalyptus ( Collins et al, 2018 ), Phebalium nottii ( Sadgrove N. J. et al, 2020 ) and Eremophila ( Sadgrove et al, 2021 ), and in the former two the leaf samples were taken from herbarium voucher specimens. In the case of Eucalyptus , the sesquiterpene diol cryptomeridiol does not survive hydrodistillation and eliminates a hydroxyl group to randomly produce three eudesmols, either alpha (α-), beta (β-), or gamma (γ-).…”
Section: Chemophenetics Of Essential Oils and Solvent Extractsmentioning
confidence: 99%
“…The semi-volatile coumarins were easily detected by GC-MS if the column temperature was raised to 280–300°C and held for 20 min ( Sadgrove N. J. et al, 2020 ). Species in Eremophila also express semi-volatiles that may have significance in taxonomic studies because of a reduced susceptibility to the effects of phenoplasticity ( Sadgrove et al, 2021 ). In this latter study it was realized that the effects of phenoplasticity from contemporary weather changes, such as droughts or excessive wet periods, are more dramatic in leaf material than in timber.…”
Section: Chemophenetics Of Essential Oils and Solvent Extractsmentioning
confidence: 99%