Abstract
Plant fertilization with iodine may be an alternative source of this element in human diet. Iodine influence on nitrogen metabolism in plants has not yet been thoroughly described. Thus, there is an urgent need to determine the effect of iodine application on nitrate(V) accumulation in plants. The aim of the study was to determine the influence of soil and foliar application of iodine forms (I-, IO3-) on nitrate accumulation and concentration of selected compounds in radish plants. The following treatments were applied in the experiment: 1 – control (without application of iodine), 2 – foliar application in KI form, 3 – foliar application in KIO3 form, 4 – soil fertilization in KI form, 5 – soil fertilization in KIO3 form, 6 – soil fertilization in KI form + foliar application in KI form, 7 – soil fertilization in KIO3 form + foliar application in KIO3 form. Soil fertilization with iodine was carried out before radish sowing to the level of 15 mg I·dm-3 soil. Foliar application of this element was performed twice using iodine solution in a concentration per pure element of 0.2%, in dose of 0.4 dm3· m-2. In all tested combinations with iodine treatment an increase of ammonium ion content in radish roots was observed in comparison to the control. Both, foliar nutrition with KI as well as nitrogen fertilization with KIO3 (combination 2 and 6, respectively) resulted in a significant increase of free amino acids concentration in radish roots. No significant influence of tested factors was noted for the root and leaf content of: dry mass, nitrates(V), nitrates(III) as well as root level of total soluble sugars and leaf concentration of photosynthetic pigments and ammonium ions in radish.
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Claims 6
Claim · model-written summary
Every iodine treatment increased ammonium ion content in radish roots versus control.
- Taxon
- radish
Raphanus sativuse0 - Organ / stage
- rootse0
- Treatment
- iodine treatmente0
- Outcome
- ammonium ion contente0
- Direction
- increasee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In all tested combinations with iodine treatment an increase of ammonium ion content in radish roots was observed in comparison to the control”
Claim · model-written summary
Foliar KI increased free amino acids in radish roots significantly.
- Taxon
- radishRaphanus sativuse0
- Organ / stage
- rootse0
- Treatment
- foliar nutrition with KIe0
- Outcome
- free amino acids concentratione0
- Direction
- increasee0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar nutrition with KI as well as nitrogen fertilization with KIO3 (combination 2 and 6, respectively) resulted in a significant increase of free amino acids concentration in radish roots”
e1“control (without application of iodine)”
Claim · model-written summary
The reported KIO3 fertilization combination significantly increased free amino acids in radish roots.
- Taxon
- radishRaphanus sativuse0
- Organ / stage
- rootse0
- Treatment
- nitrogen fertilization with KIO3e0
- Outcome
- free amino acids concentratione0
- Direction
- increasee0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrogen fertilization with KIO3 (combination 2 and 6, respectively) resulted in a significant increase of free amino acids concentration in radish roots”
e1“control (without application of iodine)”
Claim · model-written summary
The tested factors had no significant influence on root and leaf dry mass or nitrate contents.
- Taxon
- RADISH PLANTS (Raphanus sativus L.)Raphanus sativust0
- Organ / stage
- root and leafe0
- Treatment
- tested factorse0
- Outcome
- dry mass, nitrates(V), nitrates(III)e0
- Comparator
- controle1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant influence of tested factors was noted for the root and leaf content of: dry mass, nitrates(V), nitrates(III)”
e1“control (without application of iodine)”
t0“RADISH PLANTS (Raphanus sativus L.)”
Claim · model-written summary
The tested factors had no significant influence on root total soluble sugars.
- Taxon
- RADISH PLANTS (Raphanus sativus L.)Raphanus sativust0
- Organ / stage
- roote0
- Treatment
- tested factorse0
- Outcome
- total soluble sugarse0
- Comparator
- controle1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant influence of tested factors was noted for the root and leaf content of: dry mass, nitrates(V), nitrates(III) as well as root level of total soluble sugars”
e1“control (without application of iodine)”
t0“RADISH PLANTS (Raphanus sativus L.)”
Claim · model-written summary
The tested factors had no significant influence on leaf photosynthetic pigments or ammonium ions.
- Taxon
- radishRaphanus sativuse0
- Organ / stage
- leafe0
- Treatment
- tested factorse0
- Outcome
- photosynthetic pigments and ammonium ionse0
- Comparator
- controle1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant influence of tested factors was noted for the root and leaf content of: dry mass, nitrates(V), nitrates(III) as well as root level of total soluble sugars and leaf concentration of photosynthetic pigments and ammonium ions in radish”
e1“control (without application of iodine)”
The same questions in other papers
fertilization · molecular: metabolites · Raphanus sativus (radish)Positive and negative results
7 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- negative
7 papers more in this group
See all 11 papers →micronutrient · molecular: metabolites · Raphanus sativus (radish)Results agree
1 paper in the same direction as this paper
- positive
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.