Abstract
Septoria nodorum blotch (SNB), a disease caused by the necrotrophic fungal pathogen Parastagonospora nodorum, is a threat to wheat (Triticum aestivum) production worldwide. Multiple inverse gene-for-gene interactions involving the recognition of necrotrophic effectors (NEs) by wheat sensitivity genes play major roles in causing SNB. One interaction involves the wheat gene Snn3 and the P. nodorum NE SnTox3. Here, we used a map-based strategy to clone the Snn3-D1 gene from Aegilops tauschii, the D-genome progenitor of common wheat. Snn3-D1 contained protein kinase and major sperm protein domains, both of which were essential for function as confirmed by mutagenesis. As opposed to other characterized interactions in this pathosystem, a compatible Snn3-D1-SnTox3 interaction was light-independent, and Snn3-D1 transcriptional expression was downregulated by light and upregulated by darkness. Snn3-D1 likely emerged in Ae. tauschii due to an approximately 218-kb insertion that occurred along the west bank of the Caspian Sea. The identification of this new class of NE sensitivity genes combined with the previously cloned sensitivity genes demonstrates that P. nodorum can take advantage of diverse host targets to trigger SNB susceptibility in wheat.
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Claims 7
Claim · model-written summary
Snn3-D1 was cloned from Aegilops tauschii.
- Taxon
- Aegilops tauschii
.jpg?width=60)
Aegilops tauschiie0 - Gene
- Snn3-D1e0
- Outcome
- Snn3-D1 genee0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“clone the Snn3-D1 gene from Aegilops tauschii”
Claim · model-written summary
The protein kinase and major sperm protein domains were essential for Snn3-D1 function.
- Taxon
- wheat
Triticum aestivumt0 - Gene
- Snn3-D1e0
- Outcome
- essential for functione0
- Qualifier
- protein kinase and major sperm protein domainse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Snn3-D1 contained protein kinase and major sperm protein domains, both of which were essential for function as confirmed by mutagenesis”
t0“wheat”
Claim · model-written summary
The compatible Snn3-D1-SnTox3 interaction was light-independent.
- Taxon
- wheatTriticum aestivumt0
- Interactor
- Parastagonospora nodorum
Parastagonospora nodorume1pathogen - Gene
- Snn3-D1e0
- Outcome
- light-independente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a compatible Snn3-D1-SnTox3 interaction was light-independent”
t0“wheat”
e1“the necrotrophic fungal pathogen Parastagonospora nodorum”
Claim · model-written summary
Light downregulated Snn3-D1 transcription.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- lighte0
- Gene
- Snn3-D1e0
- Outcome
- Snn3-D1 transcriptional expressione0
- Direction
- downregulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Snn3-D1 transcriptional expression was downregulated by light”
t0“wheat”
Claim · model-written summary
Darkness upregulated Snn3-D1 transcription.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- darknesse0
- Gene
- Snn3-D1e0
- Outcome
- Snn3-D1 transcriptional expressione0
- Direction
- upregulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Snn3-D1 transcriptional expression was downregulated by light and upregulated by darkness”
t0“wheat”
Claim · model-written summary
Snn3-D1 likely arose in Aegilops tauschii through an approximately 218-kb insertion near the Caspian Sea.
Verbatim
e0“Snn3-D1 likely emerged in Ae. tauschii due to an approximately 218-kb insertion that occurred along the west bank of the Caspian Sea”
Claim · model-written summary
Parastagonospora nodorum can exploit diverse host targets to trigger wheat susceptibility.
- Taxon
- wheatTriticum aestivume0
- Interactor
- P. nodorumParastagonospora nodorume0pathogen
- Outcome
- SNB susceptibilitye0
- Qualifier
- diverse host targetse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. nodorum can take advantage of diverse host targets to trigger SNB susceptibility in wheat”
The same questions in other papers
light · molecular: expression · Triticum aestivum (wheat)Positive and negative results
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- no effect
- negative
- negative
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