Abstract
Abstract The effects of copper (Cu), zinc (Zn), and manganese (Mn) deficiencies on the activities of Superoxide dismutase (SOD) and ascorbate peroxidase (APx) were investigated in seedlings of Nicotiana tabacum cv. Xanthin. After germinating in sand for 7 days, plants were transplanted to solution culture with all nutrients or without Cu, Zn, or Mn. Plants grown without Mn developed visual deficiency symptoms 15 days after transplanting (DAT), and those grown without Zn showed Zn deficiency symptoms 26 DAT. In contrast, plants grown without Cu showed only minor symptoms of Cu deficiency at 33 DAT. When harvested 41 DAT, ‐Mn plants suffered the largest, and ‐Cu the smallest reduction in shoot dry weight compared to plants supplied with all nutrients. Nutrient analysis in leaf tissue showed a considerable decrease in concentration of nutrients not supplied to plants. Total SOD, MnSOD+FeSOD, Cu/Zn SOD, and APx activities declined drastically in ‐Mn and ‐Zn plants, while total SOD, MnSOD+FeSOD and APx activities in ‐Cu plants remained significantly higher than those of control plants. It was concluded that micronutrient deficiencies (Cu, Zn, and Mn) can alter the activities of antioxidative enzymes in tobacco plants depending on the severity and the type of the deficiency stress.
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Claims 11
Claim · model-written summary
Plants grown without Mn developed visual deficiency symptoms 15 days after transplanting.
- Taxon
- Nicotiana tabacum
Nicotiana tabacume0 - Material
- cv. Xanthine0
- Treatment
- without Mne1
- Outcome
- visual deficiency symptomse1
- Value
- 15 days after transplanting (DAT)e1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of Nicotiana tabacum cv. Xanthin”
e1“Plants grown without Mn developed visual deficiency symptoms 15 days after transplanting (DAT)”
Claim · model-written summary
Plants grown without Zn showed Zn deficiency symptoms 26 days after transplanting.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Material
- cv. Xanthine0
- Treatment
- without Zne2
- Outcome
- Zn deficiency symptomse2
- Value
- 26 DATe2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of Nicotiana tabacum cv. Xanthin”
e2“those grown without Zn showed Zn deficiency symptoms 26 DAT”
Claim · model-written summary
Plants grown without Cu showed only minor Cu deficiency symptoms at 33 days after transplanting.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Material
- cv. Xanthine0
- Treatment
- without Cue3
- Outcome
- minor symptoms of Cu deficiencye3
- Value
- 33 DATe3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of Nicotiana tabacum cv. Xanthin”
e3“plants grown without Cu showed only minor symptoms of Cu deficiency at 33 DAT”
Claim · model-written summary
Without Mn, shoot dry weight suffered the largest reduction compared with plants supplied with all nutrients.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- ‐Mne4
- Outcome
- shoot dry weighte4
- Direction
- the largeste4
- Comparator
- plants supplied with all nutrientse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of Nicotiana tabacum cv. Xanthin”
e4“When harvested 41 DAT, ‐Mn plants suffered the largest, and ‐Cu the smallest reduction in shoot dry weight compared to plants supplied with all nutrients”
Claim · model-written summary
Without Cu, shoot dry weight suffered the smallest reduction compared with plants supplied with all nutrients.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- ‐Cue4
- Outcome
- shoot dry weighte4
- Direction
- the smalleste4
- Comparator
- plants supplied with all nutrientse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of Nicotiana tabacum cv. Xanthin”
e4“When harvested 41 DAT, ‐Mn plants suffered the largest, and ‐Cu the smallest reduction in shoot dry weight compared to plants supplied with all nutrients”
Claim · model-written summary
Nutrients not supplied to plants decreased their concentration in leaf tissue.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Organ / stage
- leaf tissuee5
- Treatment
- nutrients not supplied to plantse5
- Outcome
- concentration of nutrientse5
- Direction
- decreasee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of Nicotiana tabacum cv. Xanthin”
e5“Nutrient analysis in leaf tissue showed a considerable decrease in concentration of nutrients not supplied to plants”
Claim · model-written summary
Total SOD, MnSOD+FeSOD and Cu/Zn SOD activities declined in Mn-deficient plants.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- ‐Mne6
- Outcome
- Total SOD, MnSOD+FeSOD, Cu/Zn SODe6
- Direction
- declinede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of Nicotiana tabacum cv. Xanthin”
e6“Total SOD, MnSOD+FeSOD, Cu/Zn SOD, and APx activities declined drastically in ‐Mn and ‐Zn plants”
Claim · model-written summary
APx activity declined in Mn-deficient plants.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- ‐Mne6
- Outcome
- APx activitiese6
- Direction
- declinede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of Nicotiana tabacum cv. Xanthin”
e6“Total SOD, MnSOD+FeSOD, Cu/Zn SOD, and APx activities declined drastically in ‐Mn and ‐Zn plants”
Claim · model-written summary
Total SOD, MnSOD+FeSOD and Cu/Zn SOD activities declined in Zn-deficient plants.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- ‐Zne6
- Outcome
- Total SOD, MnSOD+FeSOD, Cu/Zn SODe6
- Direction
- declinede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of Nicotiana tabacum cv. Xanthin”
e6“Total SOD, MnSOD+FeSOD, Cu/Zn SOD, and APx activities declined drastically in ‐Mn and ‐Zn plants”
Claim · model-written summary
APx activity declined in Zn-deficient plants.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- ‐Zne6
- Outcome
- APx activitiese6
- Direction
- declinede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of Nicotiana tabacum cv. Xanthin”
e6“Total SOD, MnSOD+FeSOD, Cu/Zn SOD, and APx activities declined drastically in ‐Mn and ‐Zn plants”
Claim · model-written summary
Total SOD, MnSOD+FeSOD and APx activities were significantly higher in Cu-deficient plants than in control plants.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- ‐Cu plantse7
- Outcome
- Total SOD, MnSOD+FeSOD and APx activitiese7
- Direction
- highere7
- Comparator
- control plantse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of Nicotiana tabacum cv. Xanthin”
e7“total SOD, MnSOD+FeSOD and APx activities in ‐Cu plants remained significantly higher than those of control plants”
The same questions in other papers
manganese atom · disease · Nicotiana tabacum (tobacco)Positive and negative results
1 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- negative
copper atom · disease · Nicotiana tabacum (tobacco)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- negative
- positive
- positive
1 paper more in this group
See all 5 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.