Abstract
XIP-I and TAXI-I are wheat (Triticum aestivum L) grain proteins that inhibit microbial xylanases used in food processing. Although their biochemical properties and structural features were established recently, very little is known about their expression and their family members in wheat plants. To clarify the role of these xylanase inhibitor proteins in plant defense, we examined the expression of the XIP-type genes in response to a variety of biotic and abiotic signals. Although Xip-I was not expressed in flowering spikelets inoculated with Fusarium graminearum, transcription of Xip-I was greatly enhanced in Erysiphe graminis-infected leaves. Thus, unlike Taxi-I, Xip-I is pathogen-inducible, and unlike Taxi-III and Taxi-IV, its expression depends on the type of the pathogen and/or infected tissue. Xip-I was expressed when the leaves were wounded, and its expression was significantly elevated by treatment with methyl jasmonate (MeJA). The different expression profiles of XIP- and TAXI-type genes suggest distinct roles in plant defense.
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Claims 6
Claim · model-written summary
Xip-I was not expressed in wheat flowering spikelets inoculated with Fusarium graminearum.
- Taxon
- wheat
Triticum aestivume0 - Organ / stage
- flowering spikeletse1
- Treatment
- inoculated with Fusarium graminearume1
- Interactor
- Fusarium graminearum
_on_Corn_(Zea_mays)_at_Waimea%2C_Hawaii.jpg?width=60)
Fusarium graminearume1pathogen - Gene
- Xip-Ie1
- Outcome
- Xip-I was not expressede1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_on_Corn_(Zea_mays)_at_Waimea%2C_Hawaii.jpg?width=500)
Verbatim
e0“are wheat (Triticum aestivum L) grain proteins”
e1“Although Xip-I was not expressed in flowering spikelets inoculated with Fusarium graminearum, transcription of Xip-I was greatly enhanced in Erysiphe graminis-infected leaves”
Claim · model-written summary
Xip-I transcription was greatly enhanced in wheat leaves infected by Erysiphe graminis.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- leavese1
- Treatment
- Erysiphe graminis-infectede1
- Interactor
- Erysiphe graminis
Blumeria graminise1pathogen - Gene
- Xip-Ie1
- Outcome
- transcription of Xip-Ie1
- Direction
- enhancede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“are wheat (Triticum aestivum L) grain proteins”
e1“Although Xip-I was not expressed in flowering spikelets inoculated with Fusarium graminearum, transcription of Xip-I was greatly enhanced in Erysiphe graminis-infected leaves”
Claim · model-written summary
Xip-I expression depends on the type of pathogen and/or the infected tissue.
- Taxon
- wheatTriticum aestivume0
- Gene
- Xip-Ie3
- Outcome
- expressione3
- Qualifier
- depends on the type of the pathogen and/or infected tissuee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“are wheat (Triticum aestivum L) grain proteins”
e3“Thus, unlike Taxi-I, Xip-I is pathogen-inducible, and unlike Taxi-III and Taxi-IV, its expression depends on the type of the pathogen and/or infected tissue”
Claim · model-written summary
Xip-I was expressed in wheat leaves when they were wounded.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- leavese2
- Treatment
- woundede2
- Gene
- Xip-Ie2
- Outcome
- Xip-I was expressede2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“are wheat (Triticum aestivum L) grain proteins”
e2“Xip-I was expressed when the leaves were wounded, and its expression was significantly elevated by treatment with methyl jasmonate (MeJA)”
Claim · model-written summary
Methyl jasmonate significantly elevated Xip-I expression in wheat.
- Taxon
- wheatTriticum aestivume0
- Treatment
- methyl jasmonate (MeJA)e2
- Gene
- Xip-Ie2
- Outcome
- expressione2
- Direction
- elevatede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“are wheat (Triticum aestivum L) grain proteins”
e2“Xip-I was expressed when the leaves were wounded, and its expression was significantly elevated by treatment with methyl jasmonate (MeJA)”
Claim · model-written summary
Taxi-I is not pathogen-inducible in wheat, unlike Xip-I.
- Taxon
- wheatTriticum aestivume0
- Gene
- Taxi-Ie3
- Outcome
- pathogen-induciblee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“are wheat (Triticum aestivum L) grain proteins”
e3“Thus, unlike Taxi-I, Xip-I is pathogen-inducible, and unlike Taxi-III and Taxi-IV, its expression depends on the type of the pathogen and/or infected tissue”
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