| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-06-13 |
| タイトル |
|
|
タイトル |
The phytosiderophore analogue proline-2'-deoxymugineic acid is more efficient than conventional chelators for improving iron nutrition in maize |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Chelation |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
iron fertilizer |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
maize |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
mugineic acid family phytosiderophores |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
proline- 2′-deoxymugineic acid |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 著者 |
SUZUKI,Motofumi
SUZUKI,Yutaro
HOSODA,Kensuke
NAMBA,Kosuke
KOBAYASHI,Takanori
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Iron (Fe) is an essential nutrient but has poor bioavailability because of its low solubility under conditions of high pH, such as calcareous soils. Previously, we synthesized an analogue of the natural Fe(III) chelator 2′-deoxymugineic acid secreted by graminaceous plants for efficient Fe uptake, designated as proline-2′- deoxymugineic acid (PDMA). Soil application of Fe(III)-PDMA ameliorated symptoms of Fe deficiency in rice. In the present study, we explored the potential of PDMA as Fe nutrition supplement in maize, a major graminaceous crop, and rice for comparison. In calcareous soil pots, Fe deficiency chlorosis of maize was efficiently recovered by a single application of Fe(III)-PDMA. In contrast, maize plants treated with conventional Fe(III)-chelator complexes, such as Fe(III)-ethylenediaminetetraacetic acid (EDTA) or Fe(III)-N,N′-di(2-hydroxybenzyl)ethylenediamine-N,N′-diacetic acid monohydrochloride (HBED), showed little or no recovery. Similarly, rice Fe chlorosis in calcareous soil pots was efficiently recovered by a single application of Fe(III)-PDMA, but not by other conventional Fe(III)-chelator complexes. Application of Fe(III)-PDMA was also effective in ameliorating Fe deficiency chlorosis in hydroponically grown maize seedlings; other Fe(III)-chelator complexes showed minimal or no efficacy. Addition of low concentrations of metal-free PDMA recovered Fe chlorosis of maize or rice in the presence of Fe(III)-EDTA, suggesting possible ligand exchange from EDTA to PDMA for subsequent Fe(III)-PDMA uptake by ZmYS1 and OsYSL15 transporters. Similar effects were observed with Fe(III)-HBED, which has a higher stability constant, but to a lesser extent than Fe(III)-EDTA, suggesting that ligand exchange from HBED to PDMA might be less prone to occur than for chelators with moderate stability constants, such as EDTA. Ferric-chelate reductase assays of maize roots showed substantial reduction of Fe(III)-PDMA, but this reduction activity was not increased under Fe-deficient condition. These results suggested that PDMA is an efficient reagent for improvement of Fe nutrition in graminaceous crops, including maize, because of suitability of Fe(III)-PDMA as a substrate for chelation-based Fe uptake systems. |
|
言語 |
en |
| bibliographic_information |
en : Soil Science and Plant Nutrition
巻 70,
号 5月6日,
p. 435-446,
発行日 2024
|
| 出版者 |
|
|
出版者 |
Tailor & Francis |
|
言語 |
en |
| item_10001_source_id_9 |
|
|
収録物識別子タイプ |
PISSN |
|
収録物識別子 |
0038-0768 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
本文(pdf) (5.8 MB)
