Abstract
BACKGROUND AND AIMS: Molybdenum (Mo) is an essential trace element for higher plants. It has been shown that application of Mo enhances the cold resistance of winter wheat. In order to improve our understanding of the molecular mechanisms of cold resistance arising from application of Mo in winter wheat, investigations were made regarding the transcription of cold-responsive (COR) genes in abscisic acid (ABA)-dependent and ABA-independent pathways in winter wheat regulated by Mo application under low-temperature stress. METHODS: Two cultivars of winter wheat (Triticum aestivum), Mo-efficient cultivar '97003' and Mo-inefficient cultivar '97014', were grown in control (-Mo) and Mo fertilizer (+Mo) treatments for 40 d at 15/12 degrees C (day/night), and the temperature was then reduced to 5/2 degrees C (day/night) to create low-temperature stress. Aldehyde oxidase (AO) activities, ABA contents, the transcripts of basic leucine zipper (bZIP)-type transcription factor (TF) genes, ABA-dependent COR genes, CBF/DREB transcription factor genes and ABA-independent COR genes were investigated at 0, 3, 6 and 48 h post cold stress. KEY RESULTS: Mo application significantly increased AO activity, ABA levels, and expression of bZIP-type TF genes (Wlip19 and Wabi5) and ABA-dependent COR genes (Wrab15, Wrab17, Wrab18 and Wrab19). Mo application increased expression levels of CBF/DREB transcription factor genes (TaCBF and Wcbf2-1) and ABA-independent COR genes (Wcs120, Wcs19, Wcor14 and Wcor15) after 3 and 6 h exposure to low temperature. CONCLUSIONS: Mo might regulate the expression of ABA-dependent COR genes through the pathway: Mo --> AO --> ABA --> bZIP --> ABA-dependent COR genes in winter wheat. The response of the ABA-dependent pathway to Mo was prior to that of the ABA-independent pathway. Similarities and differences between the Mo-efficient and Mo-inefficient wheat cultivars in response to Mo under cold stress are discussed.
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Claims 7
Claim · model-written summary
Mo application significantly increased aldehyde oxidase activity and ABA levels in winter wheat under low-temperature stress, relative to the control without Mo.
- Taxon
- winter wheat
Triticum aestivumt0 - Treatment
- Mo applicatione1
- Outcome
- AO activity, ABA levelse1
- Direction
- increasede1
- Comparator
- control (-Mo)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“winter wheat”
e2“control (-Mo)”
e1“Mo application significantly increased AO activity, ABA levels”
Claim · model-written summary
Mo application significantly increased expression of the bZIP-type transcription factor genes Wlip19 and Wabi5 in winter wheat under low-temperature stress, relative to the control without Mo.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Mo applicatione1
- Gene
- Wlip19 and Wabi5e1
- Outcome
- expression of bZIP-type TF genese1
- Direction
- increasede1
- Comparator
- control (-Mo)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“winter wheat”
e2“control (-Mo)”
e1“Mo application significantly increased AO activity, ABA levels, and expression of bZIP-type TF genes (Wlip19 and Wabi5)”
Claim · model-written summary
Mo application significantly increased expression of the ABA-dependent COR genes Wrab15, Wrab17, Wrab18 and Wrab19 in winter wheat under low-temperature stress, relative to the control without Mo.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Mo applicatione1
- Gene
- Wrab15, Wrab17, Wrab18 and Wrab19e1
- Outcome
- ABA-dependent COR genese1
- Direction
- increasede1
- Comparator
- control (-Mo)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“winter wheat”
e2“control (-Mo)”
e1“Mo application significantly increased AO activity, ABA levels, and expression of bZIP-type TF genes (Wlip19 and Wabi5) and ABA-dependent COR genes (Wrab15, Wrab17, Wrab18 and Wrab19)”
Claim · model-written summary
Mo application increased expression of the CBF/DREB transcription factor genes TaCBF and Wcbf2-1 in winter wheat after 3 and 6 h exposure to low temperature, relative to the control without Mo.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Mo applicatione1
- Gene
- TaCBF and Wcbf2-1e1
- Outcome
- expression levels of CBF/DREB transcription factor genese1
- Direction
- increasede1
- Qualifier
- after 3 and 6 h exposure to low temperaturee1
- Comparator
- control (-Mo)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“winter wheat”
e2“control (-Mo)”
e1“Mo application increased expression levels of CBF/DREB transcription factor genes (TaCBF and Wcbf2-1) and ABA-independent COR genes (Wcs120, Wcs19, Wcor14 and Wcor15) after 3 and 6 h exposure to low temperature”
Claim · model-written summary
Mo application increased expression of the ABA-independent COR genes Wcs120, Wcs19, Wcor14 and Wcor15 in winter wheat after 3 and 6 h exposure to low temperature, relative to the control without Mo.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Mo applicatione1
- Gene
- Wcs120, Wcs19, Wcor14 and Wcor15e1
- Outcome
- ABA-independent COR genese1
- Direction
- increasede1
- Qualifier
- after 3 and 6 h exposure to low temperaturee1
- Comparator
- control (-Mo)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“winter wheat”
e2“control (-Mo)”
e1“Mo application increased expression levels of CBF/DREB transcription factor genes (TaCBF and Wcbf2-1) and ABA-independent COR genes (Wcs120, Wcs19, Wcor14 and Wcor15) after 3 and 6 h exposure to low temperature”
Claim · model-written summary
The authors suggest Mo might regulate expression of ABA-dependent COR genes in winter wheat through the pathway Mo to AO to ABA to bZIP to ABA-dependent COR genes.
- Taxon
- winter wheatTriticum aestivume1
- Treatment
- Moe1
- Outcome
- expression of ABA-dependent COR genese1
- Qualifier
- Mo --> AO --> ABA --> bZIP --> ABA-dependent COR genese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Mo might regulate the expression of ABA-dependent COR genes through the pathway: Mo --> AO --> ABA --> bZIP --> ABA-dependent COR genes in winter wheat”
Claim · model-written summary
In winter wheat the response of the ABA-dependent pathway to Mo came earlier than that of the ABA-independent pathway.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- response of the ABA-dependent pathway to Moe1
- Qualifier
- prior to that of the ABA-independent pathwaye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“winter wheat”
e1“The response of the ABA-dependent pathway to Mo was prior to that of the ABA-independent pathway”
The same questions in other papers
molybdenum atom · molecular: expression · Triticum aestivum (wheat)Results agree
4 papers in the same direction as this paper
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