Paper · 1993 · American Journal of Botany

RELATIONSHIP BETWEEN PLOIDAL LEVEL AND CAM IN FIVE SPECIES OF TALINUM (PORTULACACEAE)

Fred S. Harris; M. Eloise B. Carter; Craig E. Martin

5
claims
6
verbatim quotes
2
citations
2
research areas
—
Not open access

Abstract

Plants (N = 102) from 23 populations of Talinum, representing five morphologically similar species, were examined in a test of the hypothesis that ploidal level may be correlated with levels of Crassulacean acid metabolism. When grouped by species and ploidal level, two groups of tetraploid plants, T. calcaricum and tetraploid individuals of T. calycinum, had significantly greater malic acid accumulations than any other group, including diploid individuals of T. calycinum. Another tetraploid, T. teretifolium, did not show greater malic acid fluctuations than the diploids, including two putative ancestors (T. mengesii and T. parviflorum). Similarly, malic acid fluctuations in tetraploid individuals of T. parviflorum were not different from diploid individuals of the same species. Nonetheless, when all plants were compared, nocturnal accumulations of malic acid in tetraploid plants were significantly greater than those of diploid plants.

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Claims 5

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Tetraploid T. calcaricum had significantly greater malic acid accumulation than other groups.

Taxon
T. calcaricumPhemeranthus calcaricuse0
Material
tetraploid plantse0
Outcome
malic acid accumulationse0
Direction
greatere0
Comparator
any other groupe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Phemeranthus calcaricus
Phemeranthus calcaricus · TaxonMason Brock ( Masebrock ) · Public domain · Wikimedia Commons ↗

Verbatim

e0

“two groups of tetraploid plants, T. calcaricum and tetraploid individuals of T. calycinum, had significantly greater malic acid accumulations than any other group”

✓ located verbatim in the source · abstract, characters 267–429 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Tetraploid T. calycinum had significantly greater malic acid accumulation than other groups.

Taxon
T. calycinumPhemeranthus calycinuse0
Material
tetraploid individualse0
Outcome
malic acid accumulationse0
Direction
greatere0
Comparator
diploid individuals of T. calycinume0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Phemeranthus calycinus
Phemeranthus calycinus · TaxonCorey Raimond · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“two groups of tetraploid plants, T. calcaricum and tetraploid individuals of T. calycinum, had significantly greater malic acid accumulations than any other group, including diploid individuals of T. calycinum.”

✓ located verbatim in the source · abstract, characters 267–477 · show in text ↑
Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

Tetraploid T. teretifolium did not have greater malic acid fluctuations than diploids.

Taxon
T. teretifoliumPhemeranthus teretifoliuse0
Outcome
malic acid fluctuationse0
Direction
did not show greatere0
Comparator
the diploidse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Phemeranthus teretifolius
Phemeranthus teretifolius · TaxonDan Vickers · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“T. teretifolium, did not show greater malic acid fluctuations than the diploids”

✓ located verbatim in the source · abstract, characters 498–577 · show in text ↑
Associationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Tetraploid T. parviflorum malic acid fluctuations did not differ from diploid plants of that species.

Taxon
T. parviflorumPhemeranthus parvifloruse0
Material
tetraploid individualse0
Outcome
malic acid fluctuationse0
Direction
not differente0
Comparator
diploid individualse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Phemeranthus parviflorus
Phemeranthus parviflorus · TaxonMason Brock ( Masebrock ) · Public domain · Wikimedia Commons ↗

Verbatim

e0

“malic acid fluctuations in tetraploid individuals of T. parviflorum were not different from diploid individuals of the same species.”

✓ located verbatim in the source · abstract, characters 657–789 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Across all Talinum plants, tetraploids accumulated significantly more malic acid nocturnally than diploids.

Taxon
TalinumTalinumt0
Material
tetraploid plantse0
Outcome
nocturnal accumulations of malic acide0
Direction
greatere0
Comparator
diploid plantse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Talinum
Talinum · Taxon · picture of the genus (one of its species)Meneerke bloem · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“nocturnal accumulations of malic acid in tetraploid plants were significantly greater than those of diploid plants.”

✓ located verbatim in the source · abstract, characters 834–949 · show in text ↑
t0

“TALINUM”

✓ located verbatim in the source · title, characters 62–69 · show in text ↑