Seasonal Variation and Resin Composition in the Andean Tree Austrocedrus chilensis

Olate, Verónica Rachel; Soto, Alex; Schmeda-Hirschmann, Guillermo

doi:10.3390/molecules19056489

Cited by 7 publications

(9 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, the current variation in the results can also be attributed to the tree’s genetic diversity and climatic conditions. This is also in correlation with the results published [ 74 – 76 ] where it was shown that both genetic and climatic factors can influence the resin production and composition. To further confirm expression of amyrin related transcripts, primers were designed using known available genomic sets derived from Azadirachta indica .…”

Section: Resultssupporting

confidence: 92%

Chemical, molecular and structural studies of Boswellia species: β-Boswellic Aldehyde and 3-epi-11β-Dihydroxy BA as precursors in biosynthesis of boswellic acids

et al. 2018

View full text Add to dashboard Cite

The distribution and biosynthesis of boswellic acids (BAs) is scarce in current literature. Present study aims to elucidate the BAs biosynthetic and its diversity in the resins of Boswellia sacra and Boswellia papyrifera. Results revealed the isolation of new (3β, 11β-dihydroxy BA) and recently known (as new source, β-boswellic aldehyde) precursors from B. sacra resin along with α-amyrin. Following this, a detailed nomenclature of BAs was elucidated. The quantification and distribution of amyrins (3-epi-α-amyrin, β-amyrin and α-amyrin) and BAs in different Boswellia resins showed highest amyrin and BAs in B. sacra as compared with B. serrata and B. papyrifera. Distribution of BAs significantly varied in the resin of B. sacra collected from dry mountains than coastal trees. In B. sacra, high content of α-amyrin was found in the roots but it lacked β-amyrin and BAs. The leaf part showed traces of β-ABA and AKBA but was deficient in amyrins. This was further confirmed by lack of transcript accumulation of amyrin-related biosynthesis gene in leaf part. In contrast, the stem showed presence of all six BAs which are attributed to existence of resin-secretory canals. In conclusion, the boswellic acids are genus-specific chemical constituents for Boswellia species albeit the variation of the amounts among different Boswellia species and grades.

show abstract

Section: Resultssupporting

confidence: 92%

Chemical, molecular and structural studies of Boswellia species: β-Boswellic Aldehyde and 3-epi-11β-Dihydroxy BA as precursors in biosynthesis of boswellic acids

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Several minor compounds also occurs in the fraction, including the isomers E -communic acid 7 and Z -communic acid 8 as well as the minor components 1 , 5 , and 9 , identified by comparison with literature [18]. GC-MS analysis showed a main compound at Rt = 16.16 min., identified as torulosal 6 , E -communic acid methyl ester 7a (Rt = 15.97 min, m / z = 316); Z -communic acid methyl ester 8a (Rt = 15.71 min, m / z = 316) and 12-oxolabda-8(17), 13 E -dien-19 oic acid methyl ester 9a (Rt = 17.89 min, m / z = 332), all of them in agreement with the literature [18,19].…”

Section: Resultssupporting

confidence: 89%

“…The resin profiles from healthy trees were similar to those described by Olate et al . (2014) [19] for female and male individuals from a Chilean population of A. chilensis . However, naturally and artificially infected trees showed a distinctive and different profile with relevant changes in chemical composition.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Phytophthora austrocedri Elicitates Changes in Diterpene Profile of Austrocedrus chilensis

et al. 2015

Self Cite

View full text Add to dashboard Cite

Abstract:The populations of the Andean Cupressaceae Austrocedrus chilensis have been severely affected by a disease caused by the phytopathogenic fungus Phytophthora austrocedri. A study was undertaken to disclose changes in the resin composition of P. austrocedri-infected individuals, including naturally infected and artificially inoculated trees, compared with healthy A. chilensis trees. GC-MS and 1 H-NMR studies showed a clear differentiation among healthy and infected resins, with the diterpene isopimara-8(9),15-dien-19-ol as a relevant constituent in resins from infected trees. The effect of resin fractions from P. austrocedri infected trees on the pathogen was assessed by measuring the mycelial growth in agar plates. The most active fractions from resin obtained from infected trees inhibited fungal growth by nearly 50% at 1 mg/dish (35.37 µg/cm 2 ). The main constituent in the active fractions were 18-hydroxymanool and the aldehyde torulosal. Both compounds are oxidation products of manool and can be a chemical response of the tree to the pathogen or be formed from the pathogen as a biotransformation product of manool by microbial oxidation. While the diterpene profiles from A. chilensis tree resins can easily differentiate healthy and P. austrocedri infected individuals, the possible conversion of manool to the antifungal derivatives 4 and 6 by the microorganism remains to be established.

show abstract

“…A similar case was observed in Canarium strictum in Kolli Hills and Servarayan Hills where the informants reported that male trees produce less resin than the female trees, and when inquired further about the quality variation between the two gender the informants did not comment on any quality variation in male and female plant resins, but informed about a general variation that based on the dryness of the resin that the fragrance it produces varies. For example, resin composition of male and female trees of Austrocedrus chilensis (D. Don) Florin & Boutelje (Cupressaceae) is reported to vary between genders and during different seasons of the year (Olate et al, 2014).…”

Section: Gender Preference In Food and Medicinal Usagesmentioning

confidence: 99%

Ethnobotany of dioecious species: Traditional knowledge on dioecious plants in India

Seethapathy

Ravikumar

Paulsen

et al. 2018

Journal of Ethnopharmacology

View full text Add to dashboard Cite

A knowledge gap exists in ethnobotanical and ethnopharmacological literature on traditional knowledge of dioecious plants. From this explorative study it is evident that people have traditional knowledge on plant gender and preferential usages towards one gender. Based on this, we propose that researchers conducting ethnobotanical and ethnopharmacological studies should consider documenting traditional knowledge on sexual systems of plants, and test the existence of gender specific usages in their conceptual framework and hypothesis testing. Incorporating such concepts could provide new dimensions of scientific knowledge with potential implications to conservation biology, chemical ecology, ethnoecology and drug discovery.

show abstract

Seasonal Variation and Resin Composition in the Andean Tree Austrocedrus chilensis

Cited by 7 publications

References 29 publications

Chemical, molecular and structural studies of Boswellia species: β-Boswellic Aldehyde and 3-epi-11β-Dihydroxy BA as precursors in biosynthesis of boswellic acids

Chemical, molecular and structural studies of Boswellia species: β-Boswellic Aldehyde and 3-epi-11β-Dihydroxy BA as precursors in biosynthesis of boswellic acids

Phytophthora austrocedri Elicitates Changes in Diterpene Profile of Austrocedrus chilensis

Ethnobotany of dioecious species: Traditional knowledge on dioecious plants in India

Contact Info

Product

Resources

About