Yellow stripe1. Expanded roles for the maize iron-phytosiderophore transporter

被引:136
作者
Roberts, LA [1 ]
Pierson, AJ [1 ]
Panaviene, Z [1 ]
Walker, EL [1 ]
机构
[1] Univ Massachusetts, Dept Biol, Amherst, MA 01003 USA
关键词
D O I
10.1104/pp.103.037572
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Graminaceous monocots, including most of the world's staple grains (i.e. rice, corn, and wheat) use a chelation strategy (Strategy II) for primary acquisition of iron from the soil. Strategy 11 plants secrete phytosiderophores (PS), compounds of the mugineic acid family that form stable Fe(III) chelates in soil. Uptake of iron-PS chelates, which occurs through specific transporters at the root surface, thus represents the primary route of iron entry into Strategy II plants. The gene Yellow stripe1 (Ys1) encodes the Fe(III)-PS transporter of maize (Zea mays). Here the physiological functions performed by maize YS1 were further defined by examining the pattern of Ys1 mRNA and protein accumulation and by defining YS1 transport specificity in detail. YS1 is able to translocate iron that is bound either by PS or by the related compound, nicotianamine; thus, the role of YS1 may be to transport either of these complexes. Ys1 expression at both the mRNA and protein levels responds rapidly to changes in iron availability but is not strongly affected by limitation of copper or zinc. Our data provide no support for the idea that YS1 is a transporter of zinc-PS, based on YS1 biochemical activity and Ys1 mRNA expression patterns in response to zinc deficiency. YS1 is capable of transporting copper-PS, but expression data suggest that the copper-PS uptake has limited significance in primary uptake of copper.
引用
收藏
页码:112 / 120
页数:9
相关论文
共 43 条
[31]   ZmYS1 functions as a proton-coupled symporter for phytosiderophore- and nicotianamine-chelated metals [J].
Schaaf, G ;
Ludewig, U ;
Erenoglu, BE ;
Mori, S ;
Kitahara, T ;
von Wirén, N .
JOURNAL OF BIOLOGICAL CHEMISTRY, 2004, 279 (10) :9091-9096
[32]   TRANSPORT OF METAL MICRONUTRIENTS IN THE PHLOEM OF CASTOR BEAN (RICINUS-COMMUNIS) SEEDLINGS [J].
SCHMIDKE, I ;
STEPHAN, UW .
PHYSIOLOGIA PLANTARUM, 1995, 95 (01) :147-153
[33]   THE NORMALIZING FACTOR FOR THE TOMATO MUTANT CHLORONERVA .3. DISTRIBUTION OF NICOTIANAMINE, A PRESUMED SYMPLAST IRON TRANSPORTER, IN DIFFERENT ORGANS OF SUNFLOWER AND OF A TOMATO WILD-TYPE AND ITS MUTANT CHLORONERVA [J].
STEPHAN, UW ;
SCHOLZ, G ;
RUDOLPH, A .
BIOCHEMIE UND PHYSIOLOGIE DER PFLANZEN, 1990, 186 (02) :81-88
[34]   PHYSIOLOGICAL ASPECT OF MUGINEIC ACID, A POSSIBLE PHYTOSIDEROPHORE OF GRAMINACEOUS PLANTS [J].
TAKAGI, S ;
NOMOTO, K ;
TAKEMOTO, T .
JOURNAL OF PLANT NUTRITION, 1984, 7 (1-5) :469-477
[35]   Phytosiderophore release in Aegilops tauschii and Triticum species under zinc and iron deficiencies [J].
Tolay, I ;
Erenoglu, B ;
Römheld, V ;
Braun, HJ ;
Cakmak, I .
JOURNAL OF EXPERIMENTAL BOTANY, 2001, 52 (358) :1093-1099
[36]   Nicotianamine chelates both FeIII and FeII.: Implications for metal transport in plants [J].
von Wirén, N ;
Klair, S ;
Bansal, S ;
Briat, JF ;
Khodr, H ;
Shioiri, T ;
Leigh, RA ;
Hider, RC .
PLANT PHYSIOLOGY, 1999, 119 (03) :1107-1114
[37]   IRON INEFFICIENCY IN MAIZE MUTANT YS1 (ZEA-MAYS L CV YELLOW-STRIPE) IS CAUSED BY A DEFECT IN UPTAKE OF IRON PHYTOSIDEROPHORES [J].
VONWIREN, N ;
MORI, S ;
MARSCHNER, H ;
ROMHELD, V .
PLANT PHYSIOLOGY, 1994, 106 (01) :71-77
[38]  
VONWIREN N, 1995, PHYSIOL PLANTARUM, V93, P611, DOI 10.1111/j.1399-3054.1995.tb05107.x
[39]   Roots of iron-efficient maize also absorb phytosiderophore-chelated zinc [J].
vonWiren, N ;
Marschner, H ;
Romheld, V .
PLANT PHYSIOLOGY, 1996, 111 (04) :1119-1125
[40]   EFFECTS OF IRON NUTRITIONAL-STATUS AND TIME OF DAY ON CONCENTRATIONS OF PHYTOSIDEROPHORES AND NICOTIANAMINE IN DIFFERENT ROOT AND SHOOT ZONES OF BARLEY [J].
WALTER, A ;
PICH, A ;
SCHOLZ, G ;
MARSCHNER, H ;
ROMHELD, V .
JOURNAL OF PLANT NUTRITION, 1995, 18 (08) :1577-1593