scholarly journals Cloning Two Genes for Nicotianamine Aminotransferase, a Critical Enzyme in Iron Acquisition (Strategy II) in Graminaceous Plants

1999 ◽  
Vol 121 (3) ◽  
pp. 947-956 ◽  
Author(s):  
Michiko Takahashi ◽  
Hirotaka Yamaguchi ◽  
Hiromi Nakanishi ◽  
Takayuki Shioiri ◽  
Naoko-Kishi Nishizawa ◽  
...  
Keyword(s):  
Iron Acquisition ◽  
Acquisition Strategy ◽  
Graminaceous Plants

Comparison of iron acquisition from Fe–pyoverdine by strategy I and strategy II plants

Botany ◽  
2011 ◽  
Vol 89 (10) ◽  
pp. 731-735 ◽  
Author(s):  
Matt Shirley ◽  
Laure Avoscan ◽  
Eric Bernaud ◽  
Gérard Vansuyt ◽  
Philippe Lemanceau
Keyword(s):  
Arabidopsis Thaliana ◽  
Plant Species ◽  
Iron Uptake ◽  
Iron Acquisition ◽  
Iron Status ◽  
Iron Nutrition ◽  
Perennial Species ◽  
Major Class ◽  
Graminaceous Plants ◽  
Strategy I

Iron is an essential micronutrient for plants and associated microorganisms. However, the bioavailability of iron in cultivated soils is low. Plants and microorganisms have thus evolved active strategies of iron uptake. Two different iron uptake strategies have been described in dicotyledonous and monocotyledonous graminaceous species. In bacteria, this strategy relies on the synthesis of siderophores. Pyoverdines, a major class of siderophores produced by fluorescent pseudomonads, were previously shown to promote iron nutrition of the dicotyledonous species Arabidopsis thaliana L. (Heynh.), whereas contradictory reports were made on the contribution of those siderophores to the nutrition of graminaceous annuals. Furthermore, no information has so far been available on graminaceous perennials. Here, the contribution of purified pyoverdine of Pseudomonas fluorescens C7R12 to the iron nutrition of two annual and perennial graminaceous plants was assessed and compared with that of two dicotyledonous plant species. Fe–Pyoverdine promoted the iron status of all plant species tested. With the exception of wheat, this promotion was more dramatic in graminaceous species than in dicotyledonous species and was the highest in fescue, a perennial species. The incorporation of 15N-labeled pyoverdine was consistent with the effect on the iron status of the plants tested.

A Practical Synthesis of the Phytosiderophore 2′-Deoxymugineic Acid: A Key to the Mechanistic Study of Iron Acquisition by Graminaceous Plants

2007 ◽  
Vol 119 (37) ◽  
pp. 7190-7193 ◽  
Author(s):  
Kosuke Namba ◽  
Yoshiko Murata ◽  
Manabu Horikawa ◽  
Takashi Iwashita ◽  
Shoichi Kusumoto
Keyword(s):  
Iron Acquisition ◽  
Mechanistic Study ◽  
Deoxymugineic Acid ◽  
Practical Synthesis ◽  
Graminaceous Plants

Plant iron acquisition strategy exploited by an insect herbivore

Science ◽  
2018 ◽  
Vol 361 (6403) ◽  
pp. 694-697 ◽  
Author(s):  
L. Hu ◽  
P. Mateo ◽  
M. Ye ◽  
X. Zhang ◽  
J. D. Berset ◽  
...  
Keyword(s):  
Iron Uptake ◽  
Host Plants ◽  
Iron Acquisition ◽  
Insect Herbivore ◽  
Insect Herbivores ◽  
Corn Rootworm ◽  
Specialist Herbivore ◽  
Maize Plants ◽  
Acquisition Strategy ◽  
Root Feeding

Insect herbivores depend on their host plants to acquire macro- and micronutrients. Here we asked how a specialist herbivore and damaging maize pest, the western corn rootworm, finds and accesses plant-derived micronutrients. We show that the root-feeding larvae use complexes between iron and benzoxazinoid secondary metabolites to identify maize as a host, to forage within the maize root system, and to increase their growth. Maize plants use these same benzoxazinoids for protection against generalist herbivores and, as shown here, for iron uptake. We identify an iron transporter that allows the corn rootworm to benefit from complexes between iron and benzoxazinoids. Thus, foraging for an essential plant-derived complex between a micronutrient and a secondary metabolite shapes the interaction between maize and a specialist herbivore.

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