Paper · 2018 · BMC Plant Biology

Enhanced Nicotiana benthamiana immune responses caused by heterologous plant genes from Pinellia ternata

Hafiz Muhammad Khalid Abbas; Jingshu Xiang; Zahoor Ahmad; et al.

10
claims
14
verbatim quotes
10
citations
4
research areas
✓
Open access · cc-by

Abstract

Pinellia ternata is a Chinese traditional medicinal herb, used to cure diseases including insomnia, eclampsia and cervical carcinoma, for hundreds of years. Non-self-recognition in multicellular organisms can initiate the innate immunity to avoid the invasion of pathogens. A design for pathogen independent, heterosis based, fresh resistance can be generated in F1 hybrid was proposed. By library functional screening, we found that P. ternata genes, named as ptHR375 and ptHR941, were identified with the potential to trigger a hypersensitive response in Nicotiana benthamiana. Significant induction of ROS and Callose deposition in N. benthamiana leaves along with activation of pathogenesis-related genes viz.; PR-1a, PR-5, PDF1.2, NPR1, PAL, RBOHB and ERF1 and antioxidant enzymes was observed. After transformation into N. benthamiana, expression of pathogenesis related genes was significantly up-regulated to generate high level of resistance against Phytophthora capsici without affecting the normal seed germination and morphological characters of the transformed N. benthamiana. UPLC-QTOF-MS analysis of ptHR375 transformed N. benthamiana revealed the induction of Oxytetracycline, Cuelure, Allantoin, Diethylstilbestrol and 1,2-Benzisothiazol-3(2H)-one as bioactive compounds. Here we also proved that F1 hybrids, produced by crossing of the ptHR375 and ptHR941 transformed and non-transformed N. benthamiana, show significant high levels of PR-gene expressions and pathogen resistance. Heterologous plant genes can activate disease resistance in another plant species and furthermore, by generating F1 hybrids, fresh pathogen independent plant immunity can be obtained. It is also concluded that ptHR375 and ptHR941 play their role in SA and JA/ET defense pathways to activate the resistance against invading pathogens.

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Claims 10

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

P. ternata genes ptHR375 and ptHR941 trigger a hypersensitive response in Nicotiana benthamiana.

Taxon
Nicotiana benthamianaNicotiana benthamianae1
Treatment
P. ternata genese1
Gene
ptHR375e1
Outcome
hypersensitive responsee1

Not reportedComparatorDirection

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

Nicotiana benthamiana
Nicotiana benthamiana · TaxonCharles Andres · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“P. ternata genes, named as ptHR375 and ptHR941, were identified with the potential to trigger a hypersensitive response in Nicotiana benthamiana”

✓ located verbatim in the source · abstract, characters 434–578 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Expression of P. ternata genes induced a significant increase in ROS and callose deposition in N. benthamiana leaves.

Taxon
N. benthamianaNicotiana benthamianae2
Treatment
P. ternata genese1
Outcome
ROS and Callose depositione2
Direction
increaseinferrede2

Not reportedComparator

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

Nicotiana benthamiana
Nicotiana benthamiana · TaxonCharles Andres · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“P. ternata genes, named as ptHR375 and ptHR941, were identified with the potential to trigger a hypersensitive response in Nicotiana benthamiana”

✓ located verbatim in the source · abstract, characters 434–578 · show in text ↑
e2

“Significant induction of ROS and Callose deposition in N. benthamiana leaves along with activation of pathogenesis-related genes viz.; PR-1a, PR-5, PDF1.2, NPR1, PAL, RBOHB and ERF1 and antioxidant enzymes was observed”

✓ located verbatim in the source · abstract, characters 580–798 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

P. ternata gene expression activated pathogenesis-related genes PR-1a, PR-5, PDF1.2, NPR1, PAL, RBOHB and ERF1 in N. benthamiana.

Taxon
N. benthamianaNicotiana benthamianae2
Treatment
P. ternata genese1
Gene
PR-1a, PR-5, PDF1.2, NPR1, PAL, RBOHB and ERF1e2
Outcome
activation of pathogenesis-related genese2
Direction
increaseinferrede2

Not reportedComparator

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

Nicotiana benthamiana
Nicotiana benthamiana · TaxonCharles Andres · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“P. ternata genes, named as ptHR375 and ptHR941, were identified with the potential to trigger a hypersensitive response in Nicotiana benthamiana”

✓ located verbatim in the source · abstract, characters 434–578 · show in text ↑
e2

“Significant induction of ROS and Callose deposition in N. benthamiana leaves along with activation of pathogenesis-related genes viz.; PR-1a, PR-5, PDF1.2, NPR1, PAL, RBOHB and ERF1 and antioxidant enzymes was observed”

✓ located verbatim in the source · abstract, characters 580–798 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

P. ternata gene expression activated antioxidant enzymes in N. benthamiana.

Taxon
N. benthamianaNicotiana benthamianae2
Treatment
P. ternata genese1
Outcome
antioxidant enzymese2
Direction
increaseinferrede2

Not reportedComparator

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

Nicotiana benthamiana
Nicotiana benthamiana · TaxonCharles Andres · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“P. ternata genes, named as ptHR375 and ptHR941, were identified with the potential to trigger a hypersensitive response in Nicotiana benthamiana”

✓ located verbatim in the source · abstract, characters 434–578 · show in text ↑
e2

“Significant induction of ROS and Callose deposition in N. benthamiana leaves along with activation of pathogenesis-related genes viz.; PR-1a, PR-5, PDF1.2, NPR1, PAL, RBOHB and ERF1 and antioxidant enzymes was observed”

✓ located verbatim in the source · abstract, characters 580–798 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Transformation with the P. ternata genes generated a high level of resistance against Phytophthora capsici in N. benthamiana.

Taxon
N. benthamianaNicotiana benthamianae3
Treatment
transformation into N. benthamianae3
Interactor
Phytophthora capsiciPhytophthora capsicie3pathogen
Outcome
resistance against Phytophthora capsicie3
Direction
generate high levele3

Not reportedComparator

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

Nicotiana benthamiana
Nicotiana benthamiana · TaxonCharles Andres · CC BY-SA 3.0 · Wikimedia Commons ↗
Phytophthora capsici
Phytophthora capsici · InteractorElsa Paderes, Landcare Research NZ Ltd. · CC BY 3.0 nz · Wikimedia Commons ↗

Verbatim

e3

“After transformation into N. benthamiana, expression of pathogenesis related genes was significantly up-regulated to generate high level of resistance against Phytophthora capsici without affecting the normal seed germination and morphological characters of the transformed N. benthamiana”

✓ located verbatim in the source · abstract, characters 800–1088 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Transformation with the P. ternata genes did not affect normal seed germination or morphological characters of N. benthamiana.

Taxon
N. benthamianaNicotiana benthamianae3
Treatment
transformation into N. benthamianae3
Outcome
normal seed germination and morphological characterse3
Direction
without affectinge3

Not reportedComparator

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

Nicotiana benthamiana
Nicotiana benthamiana · TaxonCharles Andres · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e3

“After transformation into N. benthamiana, expression of pathogenesis related genes was significantly up-regulated to generate high level of resistance against Phytophthora capsici without affecting the normal seed germination and morphological characters of the transformed N. benthamiana”

✓ located verbatim in the source · abstract, characters 800–1088 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

UPLC-QTOF-MS of ptHR375-transformed N. benthamiana showed induction of Oxytetracycline, Cuelure and Allantoin.

Taxon
N. benthamianaNicotiana benthamianae4
Treatment
ptHR375 transformede4
Compound
Oxytetracycline, Cuelure, Allantoine4
Outcome
inductione4
Direction
inductione4

Not reportedComparator

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

Nicotiana benthamiana
Nicotiana benthamiana · TaxonCharles Andres · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e4

“UPLC-QTOF-MS analysis of ptHR375 transformed N. benthamiana revealed the induction of Oxytetracycline, Cuelure, Allantoin, Diethylstilbestrol and 1,2-Benzisothiazol-3(2H)-one as bioactive compounds”

✓ located verbatim in the source · abstract, characters 1090–1287 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

UPLC-QTOF-MS of ptHR375-transformed N. benthamiana showed induction of Diethylstilbestrol and 1,2-Benzisothiazol-3(2H)-one.

Taxon
N. benthamianaNicotiana benthamianae4
Treatment
ptHR375 transformede4
Compound
Diethylstilbestrol and 1,2-Benzisothiazol-3(2H)-onee4
Outcome
inductione4
Direction
inductione4

Not reportedComparator

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

Nicotiana benthamiana
Nicotiana benthamiana · TaxonCharles Andres · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e4

“UPLC-QTOF-MS analysis of ptHR375 transformed N. benthamiana revealed the induction of Oxytetracycline, Cuelure, Allantoin, Diethylstilbestrol and 1,2-Benzisothiazol-3(2H)-one as bioactive compounds”

✓ located verbatim in the source · abstract, characters 1090–1287 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

F1 hybrids of transformed and non-transformed N. benthamiana showed significantly high levels of PR-gene expression and pathogen resistance.

Taxon
N. benthamianaNicotiana benthamianae5
Material
F1 hybridse5
Treatment
crossing of the ptHR375 and ptHR941 transformed and non-transformed N. benthamianae5
Outcome
PR-gene expressions and pathogen resistancee5
Direction
high levelse5

Not reportedComparator

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

Nicotiana benthamiana
Nicotiana benthamiana · TaxonCharles Andres · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e5

“F1 hybrids, produced by crossing of the ptHR375 and ptHR941 transformed and non-transformed N. benthamiana, show significant high levels of PR-gene expressions and pathogen resistance”

✓ located verbatim in the source · abstract, characters 1314–1497 · show in text ↑
Mechanismauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

ptHR375 and ptHR941 are concluded to act through SA and JA/ET defence pathways to activate resistance against invading pathogens.

Taxon
Nicotiana benthamianaNicotiana benthamianat0
Gene
ptHR375 and ptHR941e6
Outcome
resistance against invading pathogense6
Qualifier
SA and JA/ET defense pathwayse6

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

Nicotiana benthamiana
Nicotiana benthamiana · TaxonCharles Andres · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Nicotiana benthamiana”

✓ located verbatim in the source · title, characters 9–30 · show in text ↑
e6

“ptHR375 and ptHR941 play their role in SA and JA/ET defense pathways to activate the resistance against invading pathogens”

✓ located verbatim in the source · abstract, characters 1709–1831 · show in text ↑

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53 papers: 26 positive, 27 negative or no effect

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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.