Paper · 2022 · Frontiers in Plant Science

A transcriptomic-guided strategy used in identification of a wheat rust pathogen target and modification of the target enhanced host resistance to rust pathogens

Bernard Nyamesorto; Hongtao Zhang; Matthew Rouse; et al.

5
claims
11
verbatim quotes
3
citations
3
research areas
✓
Open access · cc-by

Abstract

Transcriptional reprogramming is an essential feature of plant immunity and is governed by transcription factors (TFs) and co-regulatory proteins associated with discrete transcriptional complexes. On the other hand, effector proteins from pathogens have been shown to hijack these vast repertoires of plant TFs. Our current knowledge of host genes' role (including TFs) involved in pathogen colonization is based on research employing model plants such as Arabidopsis and rice with minimal efforts in wheat rust interactions. In this study, we begun the research by identifying wheat genes that benefit rust pathogens during infection and editing those genes to provide wheat with passive resistance to rust. We identified the wheat MYC4 transcription factor (TF) located on chromosome 1B ( TaMYC4-1B) as a rust pathogen target. The gene was upregulated only in susceptible lines in the presence of the pathogens. Down-regulation of TaMYC4-1B using barley stripe mosaic virus-induced gene silencing (BSMV-VIGS) in the susceptible cultivar Chinese Spring enhanced its resistance to the stem rust pathogen. Knockout of the TaMYC4-1BL in Cadenza rendered new resistance to races of stem, leaf, and stripe rust pathogens. We developed new germplasm in wheat via modifications of the wheat TaMYC4 − 1BL transcription factor.

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

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 5

Observationobservedoriginal resultmeasured

Claim · model-written summary

TaMYC4-1B was identified as a rust pathogen target in wheat.

Interactor
rust pathogene4pathogen
Gene
TaMYC4-1Be4
Outcome
rust pathogen targete4

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“identification of a wheat rust pathogen target”

✓ located verbatim in the source · title, characters 41–87 · show in text ↑
e4

“We identified the wheat MYC4 transcription factor (TF) located on chromosome 1B ( TaMYC4-1B) as a rust pathogen target”

✓ located verbatim in the source · abstract, characters 710–828 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

TaMYC4-1B was upregulated only in susceptible wheat lines in the presence of rust pathogens.

Material
susceptible linese1
Interactor
rust pathogene4pathogen
Gene
TaMYC4-1Be4
Outcome
upregulatede1
Direction
upregulatede1

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“identification of a wheat rust pathogen target”

✓ located verbatim in the source · title, characters 41–87 · show in text ↑
e1

“The gene was upregulated only in susceptible lines in the presence of the pathogens”

✓ located verbatim in the source · abstract, characters 830–913 · show in text ↑
e4

“We identified the wheat MYC4 transcription factor (TF) located on chromosome 1B ( TaMYC4-1B) as a rust pathogen target”

✓ located verbatim in the source · abstract, characters 710–828 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Down-regulation of TaMYC4-1B by BSMV-VIGS enhanced stem rust resistance of the susceptible wheat cultivar Chinese Spring.

Material
Chinese Springe2
Treatment
Down-regulation of TaMYC4-1Be2
Interactor
stem rust pathogene2pathogen
Outcome
resistance to the stem rust pathogene2
Direction
enhancede2

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“identification of a wheat rust pathogen target”

✓ located verbatim in the source · title, characters 41–87 · show in text ↑
e2

“Down-regulation of TaMYC4-1B using barley stripe mosaic virus-induced gene silencing (BSMV-VIGS) in the susceptible cultivar Chinese Spring enhanced its resistance to the stem rust pathogen”

✓ located verbatim in the source · abstract, characters 915–1104 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Knockout of TaMYC4-1BL in Cadenza gave new resistance to races of stem, leaf and stripe rust pathogens.

Material
Cadenzae3
Treatment
Knockout of the TaMYC4-1BLe3
Interactor
stem, leaf, and stripe rust pathogense3pathogen
Outcome
new resistance to races of stem, leaf, and stripe rust pathogense3
Direction
renderede3

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“identification of a wheat rust pathogen target”

✓ located verbatim in the source · title, characters 41–87 · show in text ↑
e3

“Knockout of the TaMYC4-1BL in Cadenza rendered new resistance to races of stem, leaf, and stripe rust pathogens”

✓ located verbatim in the source · abstract, characters 1106–1217 · show in text ↑
Observationobservedoriginal resultbasis n/a

Claim · model-written summary

New wheat germplasm was developed by modifying the TaMYC4 transcription factor.

Gene
TaMYC4e5
Outcome
new germplasme5

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“identification of a wheat rust pathogen target”

✓ located verbatim in the source · title, characters 41–87 · show in text ↑
e5

“We developed new germplasm in wheat via modifications of the wheat TaMYC4”

✓ located verbatim in the source · abstract, characters 1219–1292 · show in text ↑

loss of function · disease · Triticum aestivum (wheat)Positive and negative results

177 papers: 81 positive, 96 negative or no effect

80 papers in the same direction as this paper · 96 in the opposite direction

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  2. negative
  3. negative

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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.