Abstract
Molybdenum (Mo) deficiency caused killing of winter wheat seedlings during winter season in southern China has become a problem limiting wheat yield. The effects of low temperature (−5°C–0°C) on Mo deficiency of winter wheat seedlings (Triticum aestivum L. var. “Lumai22”) were investigated in a pot experiment with an acid soil. After induction by low temperature, symptoms of Mo deficiency appeared quickly in whole plants of no Mo (−Mo) treatment, especially in lower leaves. Molybdenum deficiency increased the rate of K+ leakage at 9 h and 24 h after cold treatment in lower and upper leaves respectively. Nitrate reductase activity decreased with − Mo treatment under low temperature conditions, free amino acid content decreased corresponding to it. Total soluble sugar and sucrose contents in functional and primary leaves were raised in − Mo treatment as a whole. After low temperature treatment, total soluble sugar and sucrose content in functional leaves of Mo deficient plants dropped, while those in primary leaves increased, indicating sugar transported from old leaves to primary leaves where sugar is not enough. Mo deficiency had less influence on superoxide dismutase, and catalase activity, however peroxidase activity raised by − Mo treatment under low temperature. It is concluded that Mo deficiency has a close relationship with low temperature induction.
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Claims 5
Claim · model-written summary
Low temperature rapidly induced molybdenum deficiency symptoms in untreated winter wheat, especially lower leaves.
- Taxon
- winter wheat seedlings
Triticum aestivume7 - Organ / stage
- lower leavese0
- Treatment
- low temperaturee0
- Outcome
- symptoms of Mo deficiencye0
- Direction
- appeared quicklye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After induction by low temperature, symptoms of Mo deficiency appeared quickly in whole plants of no Mo (−Mo) treatment, especially in lower leaves.”
e7“Mo deficiency of winter wheat seedlings (Triticum aestivum L. var. “Lumai22”)”
Claim · model-written summary
Molybdenum deficiency increased potassium leakage in lower and upper leaves after cold treatment.
- Taxon
- winter wheat seedlingsTriticum aestivume7
- Organ / stage
- lower and upper leavese0
- Treatment
- Molybdenum deficiencye0
- Outcome
- rate of K+ leakagee0
- Direction
- increasede0
- Qualifier
- at 9 h and 24 h after cold treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Molybdenum deficiency increased the rate of K+ leakage at 9 h and 24 h after cold treatment in lower and upper leaves respectively.”
e7“Mo deficiency of winter wheat seedlings (Triticum aestivum L. var. “Lumai22”)”
Claim · model-written summary
Without molybdenum, nitrate reductase activity decreased under low temperature.
- Taxon
- winter wheat seedlingsTriticum aestivume7
- Treatment
- − Mo treatmente0
- Outcome
- Nitrate reductase activitye0
- Direction
- decreasede0
- Qualifier
- under low temperature conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrate reductase activity decreased with − Mo treatment under low temperature conditions”
e7“Mo deficiency of winter wheat seedlings (Triticum aestivum L. var. “Lumai22”)”
Claim · model-written summary
Free amino acid content decreased with reduced nitrate reductase activity.
- Taxon
- winter wheat seedlingsTriticum aestivume7
- Treatment
- − Mo treatmente2
- Outcome
- free amino acid contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“free amino acid content decreased corresponding to it.”
e1“The effects of low temperature (−5°C–0°C) on Mo deficiency of winter wheat seedlings (Triticum aestivum L. var. “Lumai22”) were investigated in a pot experiment with an acid soil.”
e2“Nitrate reductase activity decreased with − Mo treatment under low temperature conditions”
e7“Mo deficiency of winter wheat seedlings (Triticum aestivum L. var. “Lumai22”)”
Claim · model-written summary
After low temperature treatment, soluble sugar and sucrose content fell in functional leaves of molybdenum-deficient plants.
- Taxon
- winter wheat seedlingsTriticum aestivume7
- Organ / stage
- functional leavese0
- Treatment
- low temperature treatmente0
- Outcome
- total soluble sugar and sucrose contente0
- Direction
- droppede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After low temperature treatment, total soluble sugar and sucrose content in functional leaves of Mo deficient plants dropped”
e7“Mo deficiency of winter wheat seedlings (Triticum aestivum L. var. “Lumai22”)”
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