The phylogenetic distribution of sterols in tracheophytes

@article{Nes2006ThePD,
  title={The phylogenetic distribution of sterols in tracheophytes},
  author={William R. Nes and Kenneth Krevitz and John K. Joseph and William David Nes and Barry E. Harris and Geoffrey F. Gibbons and G. W. Patterson},
  journal={Lipids},
  year={2006},
  volume={12},
  pages={511-527}
}
The sterols of nine mature plant species in seven families ranging from the subphylum Lycopsida through the Filicopsida and the classes Gymnospermae and Angiospermae in the Pteropsida were structurally and stereochemically defined. Two plant categories were found. In the first, comprised byDryopteris (Thelypteris) noveboracensis, Polystichum acrostichoides, Dennstaedtia punctilobula, Osmunda cinnamomea, Ginkgo biloba, Cucurbita pepo, andKalmia latifolia, 24α-alkylsterols were dominant and were… CONTINUE READING

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Depending on the species , small amounts of 24α-ethyl - trans-22-dehydrocholesterol ( stigmasterol ) , 24α-methylcholesterol ( campesterol ) , 24β-methylcholesterol ( dihydrobrassicasterol , always less than campesterol ) , cholesterol , lathosterol , 24α-ethyllathosterol , 24ξ-methyllathosterol , trans-24-ethylidenelathosterol ( Δ7-avenasterol ) , and ( tentatively identified ) 24-ethyl-24(25)-dehydrolathosterol were present .
Depending on the species , small amounts of 24α-ethyl - trans-22-dehydrocholesterol ( stigmasterol ) , 24α-methylcholesterol ( campesterol ) , 24β-methylcholesterol ( dihydrobrassicasterol , always less than campesterol ) , cholesterol , lathosterol , 24α-ethyllathosterol , 24ξ-methyllathosterol , trans-24-ethylidenelathosterol ( Δ7-avenasterol ) , and ( tentatively identified ) 24-ethyl-24(25)-dehydrolathosterol were present .
Depending on the species , small amounts of 24α-ethyl - trans-22-dehydrocholesterol ( stigmasterol ) , 24α-methylcholesterol ( campesterol ) , 24β-methylcholesterol ( dihydrobrassicasterol , always less than campesterol ) , cholesterol , lathosterol , 24α-ethyllathosterol , 24ξ-methyllathosterol , trans-24-ethylidenelathosterol ( Δ7-avenasterol ) , and ( tentatively identified ) 24-ethyl-24(25)-dehydrolathosterol were present .
The primitiveLycopodium complanatum was intermediate between Categories I and II ; the sterols with a 24-C2-group had only the 24α-configuration ( sitosterol with some stigmasterol ) , but the principal sterols with a 24-C1-group ( ergosterol and dihydrobrassicasterol ) possessed the 24β-configuration . C. pepo seeds , which are already known to contain principally 24β-ethylsterols , contrast sharply with our finding that tissue ( pericarp of the fruit ) from the mature plant contains only 24α-ethylsterols .
The primitiveLycopodium complanatum was intermediate between Categories I and II ; the sterols with a 24-C2-group had only the 24α-configuration ( sitosterol with some stigmasterol ) , but the principal sterols with a 24-C1-group ( ergosterol and dihydrobrassicasterol ) possessed the 24β-configuration . C. pepo seeds , which are already known to contain principally 24β-ethylsterols , contrast sharply with our finding that tissue ( pericarp of the fruit ) from the mature plant contains only 24α-ethylsterols .
The primitiveLycopodium complanatum was intermediate between Categories I and II ; the sterols with a 24-C2-group had only the 24α-configuration ( sitosterol with some stigmasterol ) , but the principal sterols with a 24-C1-group ( ergosterol and dihydrobrassicasterol ) possessed the 24β-configuration . C. pepo seeds , which are already known to contain principally 24β-ethylsterols , contrast sharply with our finding that tissue ( pericarp of the fruit ) from the mature plant contains only 24α-ethylsterols .
The primitiveLycopodium complanatum was intermediate between Categories I and II ; the sterols with a 24-C2-group had only the 24α-configuration ( sitosterol with some stigmasterol ) , but the principal sterols with a 24-C1-group ( ergosterol and dihydrobrassicasterol ) possessed the 24β-configuration . C. pepo seeds , which are already known to contain principally 24β-ethylsterols , contrast sharply with our finding that tissue ( pericarp of the fruit ) from the mature plant contains only 24α-ethylsterols .
The primitiveLycopodium complanatum was intermediate between Categories I and II ; the sterols with a 24-C2-group had only the 24α-configuration ( sitosterol with some stigmasterol ) , but the principal sterols with a 24-C1-group ( ergosterol and dihydrobrassicasterol ) possessed the 24β-configuration . C. pepo seeds , which are already known to contain principally 24β-ethylsterols , contrast sharply with our finding that tissue ( pericarp of the fruit ) from the mature plant contains only 24α-ethylsterols .
The primitiveLycopodium complanatum was intermediate between Categories I and II ; the sterols with a 24-C2-group had only the 24α-configuration ( sitosterol with some stigmasterol ) , but the principal sterols with a 24-C1-group ( ergosterol and dihydrobrassicasterol ) possessed the 24β-configuration . C. pepo seeds , which are already known to contain principally 24β-ethylsterols , contrast sharply with our finding that tissue ( pericarp of the fruit ) from the mature plant contains only 24α-ethylsterols .
This apparent evolutionary recapitulation ( Category II to I ) during development coupled with statistical dominance of Category II plants among the algae and fungi and of Category I plants in the Tracheophytes , and the existence of an intermediate type in the species examined from the lower Tracheophyte ( Lycopsida ) lead logically to the conclusion that the 24α-alkyl structure , especially 24-α-ethyl-Δ5-sterols ( sitosterol and the much rarer stigmasterol ) constitutes the most highly evolved type of 24-alkylsterol .
The primitiveLycopodium complanatum was intermediate between Categories I and II ; the sterols with a 24-C2-group had only the 24α-configuration ( sitosterol with some stigmasterol ) , but the principal sterols with a 24-C1-group ( ergosterol and dihydrobrassicasterol ) possessed the 24β-configuration . C. pepo seeds , which are already known to contain principally 24β-ethylsterols , contrast sharply with our finding that tissue ( pericarp of the fruit ) from the mature plant contains only 24α-ethylsterols .
The primitiveLycopodium complanatum was intermediate between Categories I and II ; the sterols with a 24-C2-group had only the 24α-configuration ( sitosterol with some stigmasterol ) , but the principal sterols with a 24-C1-group ( ergosterol and dihydrobrassicasterol ) possessed the 24β-configuration . C. pepo seeds , which are already known to contain principally 24β-ethylsterols , contrast sharply with our finding that tissue ( pericarp of the fruit ) from the mature plant contains only 24α-ethylsterols .
This apparent evolutionary recapitulation ( Category II to I ) during development coupled with statistical dominance of Category II plants among the algae and fungi and of Category I plants in the Tracheophytes , and the existence of an intermediate type in the species examined from the lower Tracheophyte ( Lycopsida ) lead logically to the conclusion that the 24α-alkyl structure , especially 24-α-ethyl-Δ5-sterols ( sitosterol and the much rarer stigmasterol ) constitutes the most highly evolved type of 24-alkylsterol .
The primitiveLycopodium complanatum was intermediate between Categories I and II ; the sterols with a 24-C2-group had only the 24α-configuration ( sitosterol with some stigmasterol ) , but the principal sterols with a 24-C1-group ( ergosterol and dihydrobrassicasterol ) possessed the 24β-configuration . C. pepo seeds , which are already known to contain principally 24β-ethylsterols , contrast sharply with our finding that tissue ( pericarp of the fruit ) from the mature plant contains only 24α-ethylsterols .
The primitiveLycopodium complanatum was intermediate between Categories I and II ; the sterols with a 24-C2-group had only the 24α-configuration ( sitosterol with some stigmasterol ) , but the principal sterols with a 24-C1-group ( ergosterol and dihydrobrassicasterol ) possessed the 24β-configuration . C. pepo seeds , which are already known to contain principally 24β-ethylsterols , contrast sharply with our finding that tissue ( pericarp of the fruit ) from the mature plant contains only 24α-ethylsterols .
However , they are consonant with a relationship between Cucurbitaceae and Theales and between Rosales and Lamiales .
However , they are consonant with a relationship between Cucurbitaceae and Theales and between Rosales and Lamiales .
However , they are consonant with a relationship between Cucurbitaceae and Theales and between Rosales and Lamiales .
However , they are consonant with a relationship between Cucurbitaceae and Theales and between Rosales and Lamiales .
However , they are consonant with a relationship between Cucurbitaceae and Theales and between Rosales and Lamiales .
However , they are consonant with a relationship between Cucurbitaceae and Theales and between Rosales and Lamiales .
RosalesNo subtypeTheales
However , they are consonant with a relationship between Cucurbitaceae and Theales and between Rosales and Lamiales .
ThealesNo subtypeRosales
However , they are consonant with a relationship between Cucurbitaceae and Theales and between Rosales and Lamiales .
RosalesNo subtypeLamiales
However , they are consonant with a relationship between Cucurbitaceae and Theales and between Rosales and Lamiales .
LamialesNo subtypeRosales
However , they are consonant with a relationship between Cucurbitaceae and Theales and between Rosales and Lamiales .
ThealesNo subtypeLamiales
However , they are consonant with a relationship between Cucurbitaceae and Theales and between Rosales and Lamiales .
LamialesNo subtypeTheales
However , they are consonant with a relationship between Cucurbitaceae and Theales and between Rosales and Lamiales .
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