Paper · 2020 · International Journal of Molecular Sciences

Characterization of Nuclear and Mitochondrial Genomes of Two Tobacco Endophytic Fungi Leptosphaerulina chartarum and Curvularia trifolii and Their Contributions to Phylogenetic Implications in the Pleosporales

Xiao-Long Yuan; Min Cao; Guo-Ming Shen; et al.

9
claims
20
verbatim quotes
10
citations
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research areas
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Open access · cc-by

Abstract

The symbiont endophytic fungi in tobacco are highly diverse and difficult to classify. Here, we sequenced the genomes of Curvularia trifolii and Leptosphaerulina chartarum isolated from tobacco plants. Finally, 41.68 Mb and 37.95 Mb nuclear genomes were sequenced for C. trifolii and L. chartarum with the scaffold N50, accounting for 638.94 Kb and 284.12 Kb, respectively. Meanwhile, we obtained 68,926 bp and 59,100 bp for their mitochondrial genomes. To more accurately classify C. trifolii and L. chartarum, we extracted seven nuclear genes and 12 mitochondrial genes from these two genomes and their closely related species. The genes were then used for calculation of evolutionary rates and for phylogenetic analysis. Results showed that it was difficult to achieve consistent results using a single gene due to their different evolutionary rates, while the phylogenetic trees obtained by combining datasets showed stable topologies. It is, therefore, more accurate to construct phylogenetic relationships for endophytic fungi based on multi-gene datasets. This study provides new insights into the distribution and characteristics of endophytic fungi in tobacco.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

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Claims 9

Observationobservedoriginal resultmeasured

Claim · model-written summary

The nuclear genome of Curvularia trifolii was 41.68 Mb.

Interactor
C. trifoliiCurvularia trifoliie2symbiont
Outcome
nuclear genomese2
Value
41.68 Mbe2

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

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“The symbiont endophytic fungi in tobacco are highly diverse and difficult to classify”

✓ located verbatim in the source · abstract, characters 0–85 · show in text ↑
e2

“Finally, 41.68 Mb and 37.95 Mb nuclear genomes were sequenced for C. trifolii and L. chartarum with the scaffold N50, accounting for 638.94 Kb and 284.12 Kb, respectively”

✓ located verbatim in the source · abstract, characters 202–372 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The nuclear genome of Leptosphaerulina chartarum was 37.95 Mb.

Interactor
L. chartarumPseudopithomyces chartarume2symbiont
Outcome
nuclear genomese2
Value
37.95 Mbe2

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

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“The symbiont endophytic fungi in tobacco are highly diverse and difficult to classify”

✓ located verbatim in the source · abstract, characters 0–85 · show in text ↑
e2

“Finally, 41.68 Mb and 37.95 Mb nuclear genomes were sequenced for C. trifolii and L. chartarum with the scaffold N50, accounting for 638.94 Kb and 284.12 Kb, respectively”

✓ located verbatim in the source · abstract, characters 202–372 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The scaffold N50 of Curvularia trifolii was 638.94 Kb.

Interactor
C. trifoliiCurvularia trifoliie2symbiont
Outcome
scaffold N50e2
Value
638.94 Kbe2

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

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“The symbiont endophytic fungi in tobacco are highly diverse and difficult to classify”

✓ located verbatim in the source · abstract, characters 0–85 · show in text ↑
e2

“Finally, 41.68 Mb and 37.95 Mb nuclear genomes were sequenced for C. trifolii and L. chartarum with the scaffold N50, accounting for 638.94 Kb and 284.12 Kb, respectively”

✓ located verbatim in the source · abstract, characters 202–372 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The scaffold N50 of Leptosphaerulina chartarum was 284.12 Kb.

Interactor
L. chartarumPseudopithomyces chartarume2symbiont
Outcome
scaffold N50e2
Value
284.12 Kbe2

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

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“The symbiont endophytic fungi in tobacco are highly diverse and difficult to classify”

✓ located verbatim in the source · abstract, characters 0–85 · show in text ↑
e2

“Finally, 41.68 Mb and 37.95 Mb nuclear genomes were sequenced for C. trifolii and L. chartarum with the scaffold N50, accounting for 638.94 Kb and 284.12 Kb, respectively”

✓ located verbatim in the source · abstract, characters 202–372 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The mitochondrial genome of Curvularia trifolii was 68,926 bp.

Interactor
Curvularia trifoliiCurvularia trifoliie1symbiont
Outcome
mitochondrial genomese3
Value
68,926 bpe3

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

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“The symbiont endophytic fungi in tobacco are highly diverse and difficult to classify”

✓ located verbatim in the source · abstract, characters 0–85 · show in text ↑
e1

“we sequenced the genomes of Curvularia trifolii and Leptosphaerulina chartarum isolated from tobacco plants”

✓ located verbatim in the source · abstract, characters 93–200 · show in text ↑
e3

“Meanwhile, we obtained 68,926 bp and 59,100 bp for their mitochondrial genomes”

✓ located verbatim in the source · abstract, characters 374–452 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The mitochondrial genome of Leptosphaerulina chartarum was 59,100 bp.

Interactor
Leptosphaerulina chartarumPseudopithomyces chartarume1symbiont
Outcome
mitochondrial genomese3
Value
59,100 bpe3

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

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“The symbiont endophytic fungi in tobacco are highly diverse and difficult to classify”

✓ located verbatim in the source · abstract, characters 0–85 · show in text ↑
e1

“we sequenced the genomes of Curvularia trifolii and Leptosphaerulina chartarum isolated from tobacco plants”

✓ located verbatim in the source · abstract, characters 93–200 · show in text ↑
e3

“Meanwhile, we obtained 68,926 bp and 59,100 bp for their mitochondrial genomes”

✓ located verbatim in the source · abstract, characters 374–452 · show in text ↑
Method / resourceobservedoriginal resultnegativemeasured

Claim · model-written summary

A single gene gave inconsistent phylogenetic results for these endophytic fungi because of different evolutionary rates.

Outcome
consistent resultse4
Comparator
single genee4

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

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“The symbiont endophytic fungi in tobacco are highly diverse and difficult to classify”

✓ located verbatim in the source · abstract, characters 0–85 · show in text ↑
e4

“it was difficult to achieve consistent results using a single gene due to their different evolutionary rates”

✓ located verbatim in the source · abstract, characters 744–852 · show in text ↑
Method / resourceobservedoriginal resultpositivemeasured

Claim · model-written summary

Phylogenetic trees from combined datasets showed stable topologies.

Outcome
stable topologiese5
Comparator
combining datasetse5

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

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“The symbiont endophytic fungi in tobacco are highly diverse and difficult to classify”

✓ located verbatim in the source · abstract, characters 0–85 · show in text ↑
e5

“the phylogenetic trees obtained by combining datasets showed stable topologies”

✓ located verbatim in the source · abstract, characters 860–938 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Phylogenetic relationships of endophytic fungi are more accurately constructed from multi-gene datasets.

Outcome
multi-gene datasetse6

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

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“The symbiont endophytic fungi in tobacco are highly diverse and difficult to classify”

✓ located verbatim in the source · abstract, characters 0–85 · show in text ↑
e6

“It is, therefore, more accurate to construct phylogenetic relationships for endophytic fungi based on multi-gene datasets”

✓ located verbatim in the source · abstract, characters 940–1061 · show in text ↑

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