Abstract
A 32 kDa glycoprotein whose effects in tobacco and other Nicotianae mimic a typical hypersensitive response, was isolated from Phytophthora megasperma. Infiltration of a few nanograms of the protein into leaves caused the formation of lesions that closely resemble hypersensitive response lesions. Transcripts of genes encoding enzymes of the phenylpropanoid and sesquiterpenoid pathways accumulated rapidly after elicitor application followed by salicylic acid production. Cellular damage, restricted to the infiltrated zone, occurred only several hours later, at a time when expression of PR protein genes was activated. After several days systemic acquired resistance was also induced. Thus, tobacco plant cells that perceived the glycoprotein generated a cascade of signals acting at local, short, and long distances, and causing the coordinate expression of specific defence responses in a way similar to hypersensitivity to tobacco mosaic virus. The glycoprotein represents a powerful tool to investigate further the signals and their transduction pathways involved in induced disease resistance. It may also be useful to engineer broad disease protection in a Nicotianae and possibly into crop plant species.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 6
Claim · model-written summary
The fungal glycoprotein produced hypersensitive-like lesions.
- Taxon
- tobacco
Nicotiana tabacumt0 - Organ / stage
- leavese0
- Treatment
- Infiltration of a few nanograms of the protein into leavese0
- Outcome
- lesions that closely resemble hypersensitive response lesionse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Infiltration of a few nanograms of the protein into leaves caused the formation of lesions that closely resemble hypersensitive response lesions.”
t0“tobacco”
Claim · model-written summary
Elicitor application rapidly increased phenylpropanoid and sesquiterpenoid pathway transcripts.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- elicitor applicatione0
- Outcome
- Transcripts of genes encoding enzymes of the phenylpropanoid and sesquiterpenoid pathwayse0
- Direction
- accumulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transcripts of genes encoding enzymes of the phenylpropanoid and sesquiterpenoid pathways accumulated rapidly after elicitor application followed by salicylic acid production.”
t0“tobacco”
Claim · model-written summary
Elicitor application was followed by salicylic acid production.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- elicitor applicatione0
- Outcome
- salicylic acid productione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transcripts of genes encoding enzymes of the phenylpropanoid and sesquiterpenoid pathways accumulated rapidly after elicitor application followed by salicylic acid production.”
t0“tobacco”
Claim · model-written summary
Cellular damage was restricted to the infiltrated zone and arose hours later.
- Taxon
- tobaccoNicotiana tabacumt0
- Outcome
- Cellular damage, restricted to the infiltrated zonee0
- Qualifier
- only several hours latere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cellular damage, restricted to the infiltrated zone, occurred only several hours later, at a time when expression of PR protein genes was activated.”
t0“tobacco”
Claim · model-written summary
PR protein gene expression was activated when cellular damage occurred.
- Taxon
- tobaccoNicotiana tabacumt0
- Gene
- PR protein genese0
- Outcome
- expression of PR protein genes was activatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cellular damage, restricted to the infiltrated zone, occurred only several hours later, at a time when expression of PR protein genes was activated.”
t0“tobacco”
Claim · model-written summary
Systemic acquired resistance was induced after several days.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- glycoproteint0
- Outcome
- systemic acquired resistancee0
- Direction
- inducede0
- Qualifier
- After several dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After several days systemic acquired resistance was also induced.”
t0“tobacco: a fungal glycoprotein”
The same questions in other papers
glycoprotein · disease · Nicotiana tabacum (tobacco)Results agree
2 papers in the same direction as this paper
- positive
- positive
resistance inducer · physiology: hormones · Nicotiana tabacum (tobacco)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
resistance inducer · molecular: expression · Nicotiana tabacum (tobacco)Positive and negative results
6 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- no effect
6 papers more in this group
See all 10 papers →nanoparticle · disease · Nicotiana tabacum (tobacco)Positive and negative results
9 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
8 papers more in this group
See all 12 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.