A polarly localized transporter for efficient manganese uptake in rice

Ueno, Daisei; Sasaki, Akimasa; Yamaji, Naoki; Miyaji, Takaaki; Fujii, Yumi; Takemoto, Yuma; Moriyama, Sawako; Che, Jianfei; Moriyama, Yoshinori; Iwasaki, Katsurô; Feng, Jian

doi:10.1038/nplants.2015.170

Cited by 149 publications

(90 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…d). Cd uptake is mediated by a Mn transporter (OsNramp5) (Sasaki et al , ; Ueno et al , ), while As uptake is mediated by Si transporters (OsLsi1 and OsLsi2) (Ma et al , ; Clemens & Ma, ). However, the expression levels of these transporter genes did not differ between upland and flooded conditions (Figs b, S5c).…”

Section: Resultsmentioning

confidence: 99%

Plastic transport systems of rice for mineral elements in response to diverse soil environmental changes

et al. 2019

Self Cite

View full text Add to dashboard Cite

Summary Climate change will increase frequency of drought and flooding, which threaten global crop productivity and food security. Rice (Oryza sativa) is unique in that it is able to grow in both flooded and upland conditions, which have large differences in the concentrations and chemical forms of mineral elements available to plants. To comprehensively understand the mechanisms of rice for coping with different water status, we performed ionomics and transcriptomics analysis of the roots, nodes and leaves of rice grown in flooded and upland conditions. Focusing the analysis on genes encoding proteins involved in transport functions for mineral elements, it was found that, although rice plants maintained similar levels of each element in the shoots for optimal growth, different transporters for mineral elements were utilised for nitrogen, iron, copper and zinc to deal with different soil water conditions. For example, under flooded conditions, rice roots take up nitrogen using transporters for both ammonium (OsAMT1/2) and nitrate (OsNPF2.4, OsNRT1.1A and OsNRT2.3), whereas under upland conditions, nitrogen uptake is mediated by different nitrate transporters (OsNRT1.1B and OsNRT1.5A). This study shows that rice possesses plastic transport systems for mineral elements in response to different water conditions (upland and flooding).

show abstract

Section: Resultsmentioning

confidence: 99%

Plastic transport systems of rice for mineral elements in response to diverse soil environmental changes

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…For example, boron (B) uptake in Arabidopsis is mediated by AtNIP5;1 (influx) and AtBOR1/2 (efflux) at the epidermal cells, and by AtNIP5;1 and AtBOR1 (efflux) at the endodermis of the mature root zone (Takano et al ., , ; Miwa et al ., ; Yoshinari & Takano, ). In rice, OsLsi1 (influx) and OsLsi2 (efflux) are responsible for Si uptake (Ma et al ., , ), and OsNramp5 (influx) and OsMTP9 (efflux) are required for efficient Mn uptake (Sasaki et al ., ; Ueno et al ., ). These transporters are located at the exodermis and endodermis of mature root zones of rice (Ma et al ., , ; Sasaki et al ., ; Ueno et al ., ), and knockout of either results in a significant decrease in root Si or Mn uptake.…”

Section: Efficient Uptake System Formed By Influx and Efflux Transpormentioning

confidence: 97%

Efficient and flexible uptake system for mineral elements in plants

2018

Self Cite

View full text Add to dashboard Cite

Contents Summary 513 I. Introduction 513 II. Efficient uptake system formed by influx and efflux transporters of mineral elements 514 III. Polarity of transporters for mineral elements 515 IV. Regulation of transporters in response to environmental change 515 V. Sensing and signaling pathways regulating the uptake of mineral elements 515 VI. Conclusions and perspectives 516 Acknowledgements 516 References 516 SUMMARY: Mineral elements required for plant growth and development must first be taken up by the roots from soil. Plants have developed an efficient uptake system for the radial transport of mineral elements from soil to central stele through the allocation of various transporters at different root cells. These transporters are regulated at transcriptional, translational and/or post-translational level to cope with the fluctuation of mineral elements in soil. In this insight, we describe an efficient uptake system for mineral elements formed by influx and efflux transporters, regulatory mechanisms and polarity of these transporters, and sensing and signal pathways, in response to spatial and temporal changes of mineral elements in soil. An understanding of the mineral element uptake system in different plant species, and its regulatory network, will contribute to high and safe crop production under varying environments.

show abstract

“…The rice homolog OsMTP8.1 localized to tonoplast also plays an important role in the detoxification of excess Mn in rice (Chen et al, 2013). Recently, OsMTP9 is found to be polarly localized to plasma membrane of exodermal and endodermal cells at proximal sides and is involved in Mn translocation from roots to shoots (Ueno et al, 2015). In Arabidopsis, two CAX proteins, AtCAX2 and AtCAX4, also play a role in the sequestration of Mn into vacuoles to detoxify excess Mn (Hirschi et al, 2000;Cheng et al, 2002;Pittman et al, 2004;Edmond et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

NRAMP2, a trans‐Golgi network‐localized manganese transporter, is required for Arabidopsis root growth under manganese deficiency

et al. 2017

View full text Add to dashboard Cite

SummaryTo cope with manganese (Mn) deficiency, plants have evolved an efficient transport system to uptake and redistribute Mn. However, the underlying molecular mechanisms remain to be demonstrated.We carried out a forward genetic screen in a root high-affinity Mn transporter nramp1 mutant background in Arabidopsis thaliana and identified an uncharacterized Mn transport NRAMP2. We investigated the effect of nramp2 mutation on root growth and reactive oxygen species (ROS) accumulation and we also examined the NRAMP2 expression pattern, and the subcellular localization and transport activity of NRAMP2.Mutation of NRAMP2 impaired plant growth, while overexpression of NRAMP2 improved plant growth under low Mn conditions. In the nramp2-1nramp1 double mutant, Mn deficiency inhibited root cell elongation and root hair development, which was associated with increased hydrogen peroxide (H 2 O 2 ) accumulation. NRAMP2 is preferentially localized to the trans-Golgi network. NRAMP2 has Mn influx transport activity in yeast, and mutation of NRAMP2 led to greater Mn retention in roots.Our results suggest that under Mn-deficient conditions, increased accumulation of H 2 O 2 is partially responsible for the root growth inhibition and NRAMP2 is involved in remobilization of Mn in Golgi for root growth.

show abstract

A polarly localized transporter for efficient manganese uptake in rice

Cited by 149 publications

References 33 publications

Plastic transport systems of rice for mineral elements in response to diverse soil environmental changes

Plastic transport systems of rice for mineral elements in response to diverse soil environmental changes

Efficient and flexible uptake system for mineral elements in plants

NRAMP2, a trans‐Golgi network‐localized manganese transporter, is required for Arabidopsis root growth under manganese deficiency

Contact Info

Product

Resources

About