Abstract
Abstract The effect of varied zinc (Zn) and iron (Fe) supply on the release of Zn and Fe mobilizing phytosiderophores from roots was studied in Zn‐efficient Aroona and Zn‐inefficient Durati wheat genotypes (Triticum aestivum cv. Aroona; T. durum cv. Durati) grown under controlled environmental conditions in nutrient solution for 25 days. Phytosiderophore release was determined by the measurement of Zn and Fe mobilizing capacity of root exudates from a Zn‐loaded resin and from freshly precipitated FeIII hydroxide as well as identification by HPLC analysis. Visual Zn‐deficiency symptoms, such as necrotic patches on leaves and reduction in shoot length, appeared first and more severely in Zn‐inefficient Durati, although the concentrations of total Zn in shoot and root tissues were the same in both genotypes. Zinc‐efficient Aroona responded to Zn deficiency by increasing phytosiderophore release usually after 10 days growth in nutrient solution, whereas the phytosiderophore release in Durati remained at a very low level during 25 days growth. In contrast, under Fe deficiency and also under both Fe and Zn deficiency, Aroona and Durati released similarly high amounts of phytosidero‐ phores. HPLC analysis of root exudates revealed that the same phytosiderophores were released under Zn as under Fe deficiency, 2'‐deoxymugineic acid (DMA) being the dominant phytosiderophore. Besides DMA, 3‐hydroxymugineic acid (HMA) could also be identified mainly, however, in root exudates of Zn and of Fe‐deficient Aroona. In Zn‐deficient Durati, both DMA and HMA were released in much lower amounts. The results demonstrate that phytosiderophore release can occur under Zn deficiency as well as under Fe deficiency, and enhanced release of phytosiderophores under Zn‐deficiency stress may be causally involved in Zn efficiency in genotypes of graminaceous species.
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Claims 11
Claim · model-written summary
Zinc deficiency symptoms appeared earlier and more severely in Durati than Aroona.
- Taxon
- wheat
Triticum aestivumt0 - Material
- Duratie0
- Organ / stage
- leavese0
- Outcome
- Zn‐deficiency symptomse0
- Direction
- more severelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Visual Zn‐deficiency symptoms, such as necrotic patches on leaves and reduction in shoot length, appeared first and more severely in Zn‐inefficient Durati”
t0“wheat”
Claim · model-written summary
Shoot and root zinc concentrations were the same in both genotypes.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- concentrations of total Zn in shoot and root tissuese0
- Direction
- the samee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the concentrations of total Zn in shoot and root tissues were the same in both genotypes”
t0“wheat”
Claim · model-written summary
Under zinc deficiency, Aroona increased phytosiderophore release after about 10 days.
- Taxon
- wheatTriticum aestivumt0
- Material
- Aroonae0
- Treatment
- Zn deficiencye0
- Outcome
- phytosiderophore releasee0
- Direction
- increasinge0
- Qualifier
- after 10 days growth in nutrient solutione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc‐efficient Aroona responded to Zn deficiency by increasing phytosiderophore release usually after 10 days growth in nutrient solution”
t0“wheat”
Claim · model-written summary
Under zinc deficiency, Durati phytosiderophore release remained low for 25 days.
- Taxon
- wheatTriticum aestivumt0
- Material
- Duratie0
- Outcome
- phytosiderophore releasee0
- Direction
- very lowe0
- Qualifier
- during 25 days growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the phytosiderophore release in Durati remained at a very low level during 25 days growth”
t0“wheat”
Claim · model-written summary
Under iron deficiency, Aroona and Durati released similarly high phytosiderophore amounts.
- Taxon
- wheatTriticum aestivumt0
- Material
- Aroona and Duratie0
- Treatment
- Fe deficiencye0
- Outcome
- amounts of phytosidero‐ phorese0
- Direction
- similarly highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under Fe deficiency and also under both Fe and Zn deficiency, Aroona and Durati released similarly high amounts of phytosidero‐ phores”
t0“wheat”
Claim · model-written summary
Under combined iron and zinc deficiency, Aroona and Durati released similarly high phytosiderophore amounts.
- Taxon
- wheatTriticum aestivumt0
- Material
- Aroona and Duratie0
- Treatment
- both Fe and Zn deficiencye0
- Outcome
- amounts of phytosidero‐ phorese0
- Direction
- similarly highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under Fe deficiency and also under both Fe and Zn deficiency, Aroona and Durati released similarly high amounts of phytosidero‐ phores”
t0“wheat”
Claim · model-written summary
The same phytosiderophores were released under zinc and iron deficiency.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Zne0
- Outcome
- same phytosiderophores were releasede0
- Comparator
- Fe deficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the same phytosiderophores were released under Zn as under Fe deficiency”
t0“wheat”
Claim · model-written summary
DMA was the dominant phytosiderophore.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- 2'‐deoxymugineic acid (DMA) being the dominant phytosiderophoree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“2'‐deoxymugineic acid (DMA) being the dominant phytosiderophore”
t0“wheat”
Claim · model-written summary
HMA was identified mainly in exudates of zinc- and iron-deficient Aroona.
- Taxon
- wheatTriticum aestivumt0
- Material
- Aroonae0
- Organ / stage
- root exudatese0
- Outcome
- 3‐hydroxymugineic acid (HMA) could also be identifiede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“3‐hydroxymugineic acid (HMA) could also be identified mainly, however, in root exudates of Zn and of Fe‐deficient Aroona”
t0“wheat”
Claim · model-written summary
Under zinc deficiency, Durati released much lower amounts of DMA and HMA.
- Taxon
- wheatTriticum aestivumt0
- Material
- Duratie0
- Outcome
- DMA and HMAe0
- Direction
- much lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Zn‐deficient Durati, both DMA and HMA were released in much lower amounts.”
t0“wheat”
Claim · model-written summary
Enhanced phytosiderophore release under zinc deficiency may contribute causally to zinc efficiency in grasses.
Verbatim
e0“enhanced release of phytosiderophores under Zn‐deficiency stress may be causally involved in Zn efficiency in genotypes of graminaceous species”
The same questions in other papers
zinc atom · molecular: metabolites · Triticum aestivum (wheat)Results differ
25 papers in the same direction as this paper · 85 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- negative
- positive
- positive
107 papers more in this group
See all 111 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.