Paper · 2016 · Acta Biochimica et Biophysica Sinica

Transcriptomics-based identification of WRKY genes and characterization of a salt and hormone-responsive PgWRKY1 gene in Panax ginseng

Mohammed Nuruzzaman; Hongzhe Cao; Hao Xiu; et al.

12
claims
23
verbatim quotes
38
citations
2
research areas
✓
Open access

Abstract

WRKY proteins belong to a transcription factor (TF) family and play dynamic roles in many plant processes, including plant responses to abiotic and biotic stresses, as well as secondary metabolism. However, no WRKY gene in Panax ginseng C.A. Meyer has been reported to date. In this study, a number of WRKY unigenes from methyl jasmonate (MeJA)-treated adventitious root transcriptome of this species were identified using next-generation sequencing technology. A total of 48 promising WRKY unigenes encoding WRKY proteins were obtained by eliminating wrong and incomplete open reading frame (ORF). Phylogenetic analysis reveals 48 WRKY TFs, including 11 Group I, 36 Group II, and 1 Group III. Moreover, one MeJA-responsive unigene designated as PgWRKY1 was cloned and characterized. It contains an entire ORF of 1077 bp and encodes a polypeptide of 358 amino acid residues. The PgWRKY1 protein contains a single WRKY domain consisting of a conserved amino acid sequence motif WRKYGQK and a C2H2-type zinc-finger motif belonging to WRKY subgroup II-d. Subcellular localization of PgWRKY1-GFP fusion protein in onion and tobacco epidermis cells revealed that PgWRKY1 was exclusively present in the nucleus. Quantitative real-time polymerase chain reaction analysis demonstrated that the expression of PgWRKY1 was relatively higher in roots and lateral roots compared with leaves, stems, and seeds. Importantly, PgWRKY1 expression was significantly induced by salicylic acid, abscisic acid, and NaCl, but downregulated by MeJA treatment. These results suggested that PgWRKY1 might be a multiple stress-inducible gene responding to hormones and salt stresses.

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Claims 12

Observationobservedoriginal resultmeasured

Claim · model-written summary

Forty-eight WRKY unigenes encoding WRKY proteins were obtained from the MeJA-treated adventitious root transcriptome of Panax ginseng.

Taxon
Panax ginsengPanax ginsenge1
Outcome
WRKY unigenes encoding WRKY proteinse0
Value
48e0

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

Panax ginseng
Panax ginseng · TaxonFloraFarm GmbH / Katharina Lohrie · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“A total of 48 promising WRKY unigenes encoding WRKY proteins were obtained”

✓ located verbatim in the source · abstract, characters 462–536 · show in text ↑
e1

“Panax ginseng”

✓ located verbatim in the source · abstract, characters 223–236 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Phylogenetic analysis placed 11 of the 48 ginseng WRKY TFs in Group I.

Taxon
Panax ginsengPanax ginsenge1
Outcome
11 Group Ie0
Value
11e0

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

Panax ginseng
Panax ginseng · TaxonFloraFarm GmbH / Katharina Lohrie · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Phylogenetic analysis reveals 48 WRKY TFs, including 11 Group I, 36 Group II, and 1 Group III”

✓ located verbatim in the source · abstract, characters 599–692 · show in text ↑
e1

“Panax ginseng”

✓ located verbatim in the source · abstract, characters 223–236 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Phylogenetic analysis placed 36 of the 48 ginseng WRKY TFs in Group II.

Taxon
Panax ginsengPanax ginsenge1
Outcome
36 Group IIe0
Value
36e0

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

Panax ginseng
Panax ginseng · TaxonFloraFarm GmbH / Katharina Lohrie · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Phylogenetic analysis reveals 48 WRKY TFs, including 11 Group I, 36 Group II, and 1 Group III”

✓ located verbatim in the source · abstract, characters 599–692 · show in text ↑
e1

“Panax ginseng”

✓ located verbatim in the source · abstract, characters 223–236 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Phylogenetic analysis placed 1 of the 48 ginseng WRKY TFs in Group III.

Taxon
Panax ginsengPanax ginsenge1
Outcome
1 Group IIIe0
Value
1e0

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

Panax ginseng
Panax ginseng · TaxonFloraFarm GmbH / Katharina Lohrie · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Phylogenetic analysis reveals 48 WRKY TFs, including 11 Group I, 36 Group II, and 1 Group III”

✓ located verbatim in the source · abstract, characters 599–692 · show in text ↑
e1

“Panax ginseng”

✓ located verbatim in the source · abstract, characters 223–236 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The PgWRKY1 unigene contains an entire ORF of 1077 bp.

Taxon
Panax ginsengPanax ginsenge1
Gene
PgWRKY1e0
Outcome
entire ORFe0
Value
1077 bpe0

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

Panax ginseng
Panax ginseng · TaxonFloraFarm GmbH / Katharina Lohrie · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“one MeJA-responsive unigene designated as PgWRKY1 was cloned and characterized. It contains an entire ORF of 1077 bp and encodes a polypeptide of 358 amino acid residues”

✓ located verbatim in the source · abstract, characters 704–873 · show in text ↑
e1

“Panax ginseng”

✓ located verbatim in the source · abstract, characters 223–236 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

PgWRKY1 encodes a polypeptide of 358 amino acid residues.

Taxon
Panax ginsengPanax ginsenge1
Gene
PgWRKY1e0
Outcome
polypeptidee0
Value
358 amino acid residuese0

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

Panax ginseng
Panax ginseng · TaxonFloraFarm GmbH / Katharina Lohrie · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“one MeJA-responsive unigene designated as PgWRKY1 was cloned and characterized. It contains an entire ORF of 1077 bp and encodes a polypeptide of 358 amino acid residues”

✓ located verbatim in the source · abstract, characters 704–873 · show in text ↑
e1

“Panax ginseng”

✓ located verbatim in the source · abstract, characters 223–236 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The PgWRKY1 protein contains a single WRKY domain with the conserved motif WRKYGQK and a C2H2-type zinc-finger motif belonging to WRKY subgroup II-d.

Taxon
Panax ginsengPanax ginsenge1
Gene
PgWRKY1 proteine0
Outcome
a single WRKY domaine0

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

Panax ginseng
Panax ginseng · TaxonFloraFarm GmbH / Katharina Lohrie · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The PgWRKY1 protein contains a single WRKY domain consisting of a conserved amino acid sequence motif WRKYGQK and a C2H2-type zinc-finger motif belonging to WRKY subgroup II-d”

✓ located verbatim in the source · abstract, characters 875–1050 · show in text ↑
e1

“Panax ginseng”

✓ located verbatim in the source · abstract, characters 223–236 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

PgWRKY1-GFP fusion protein expressed in onion and tobacco epidermis cells was exclusively present in the nucleus.

Taxon
onion and tobaccoNicotiana tabacumAllium cepae0
Organ / stage
epidermis cellse0
Gene
PgWRKY1e0
Outcome
exclusively present in the nucleuse0

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 ↗
Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Subcellular localization of PgWRKY1-GFP fusion protein in onion and tobacco epidermis cells revealed that PgWRKY1 was exclusively present in the nucleus”

✓ located verbatim in the source · abstract, characters 1052–1204 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

PgWRKY1 expression was relatively higher in roots and lateral roots than in leaves, stems and seeds.

Taxon
Panax ginsengPanax ginsenge1
Organ / stage
roots and lateral rootse0
Gene
PgWRKY1e0
Outcome
expression of PgWRKY1e0
Direction
highere0
Comparator
leaves, stems, and seedse0

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

Panax ginseng
Panax ginseng · TaxonFloraFarm GmbH / Katharina Lohrie · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the expression of PgWRKY1 was relatively higher in roots and lateral roots compared with leaves, stems, and seeds”

✓ located verbatim in the source · abstract, characters 1282–1395 · show in text ↑
e1

“Panax ginseng”

✓ located verbatim in the source · abstract, characters 223–236 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PgWRKY1 expression was significantly induced by salicylic acid, abscisic acid and NaCl.

Taxon
Panax ginsengPanax ginsenge1
Treatment
salicylic acid, abscisic acid, and NaCle0
Gene
PgWRKY1e0
Outcome
PgWRKY1 expressione0
Direction
inducede0

Not reportedComparator

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

Panax ginseng
Panax ginseng · TaxonFloraFarm GmbH / Katharina Lohrie · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“PgWRKY1 expression was significantly induced by salicylic acid, abscisic acid, and NaCl, but downregulated by MeJA treatment”

✓ located verbatim in the source · abstract, characters 1410–1534 · show in text ↑
e1

“Panax ginseng”

✓ located verbatim in the source · abstract, characters 223–236 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

PgWRKY1 expression was downregulated by MeJA treatment.

Taxon
Panax ginsengPanax ginsenge1
Treatment
MeJA treatmente0
Gene
PgWRKY1e0
Outcome
PgWRKY1 expressione0
Direction
downregulatede0

Not reportedComparator

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

Panax ginseng
Panax ginseng · TaxonFloraFarm GmbH / Katharina Lohrie · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“PgWRKY1 expression was significantly induced by salicylic acid, abscisic acid, and NaCl, but downregulated by MeJA treatment”

✓ located verbatim in the source · abstract, characters 1410–1534 · show in text ↑
e1

“Panax ginseng”

✓ located verbatim in the source · abstract, characters 223–236 · show in text ↑
Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

The authors suggest PgWRKY1 might be a multiple stress-inducible gene responding to hormones and salt stresses.

Taxon
Panax ginsengPanax ginsenge1
Gene
PgWRKY1e0
Outcome
multiple stress-inducible genee0
Qualifier
responding to hormones and salt stressese0

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

Panax ginseng
Panax ginseng · TaxonFloraFarm GmbH / Katharina Lohrie · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“These results suggested that PgWRKY1 might be a multiple stress-inducible gene responding to hormones and salt stresses”

✓ located verbatim in the source · abstract, characters 1536–1655 · show in text ↑
e1

“Panax ginseng”

✓ located verbatim in the source · abstract, characters 223–236 · show in text ↑

(-)-methyl jasmonate · molecular: expression · Panax ginseng (ginseng)Positive and negative results

4 papers: 3 positive, 1 negative or no effect

3 in the opposite direction

  1. positive
  2. positive
  3. positive
See all 4 papers →

salicylic acid · molecular: expression · Panax ginseng (ginseng)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 papers →

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.