A high activity zinc transporter OsZIP9 mediates zinc uptake in rice

Yang, Meng; Li, Yutong; Liu, Zonghao; Tian, Jingjing; Liang, Limin; Qiu, Yu; Wang, Guangyuan; Du, Qingqing; Deng, Cheng; Cai, Hongmei; Shi, Lei; Xu, Fangsen; Lian, Xingming

doi:10.1111/tpj.14855

Cited by 108 publications

(65 citation statements)

References 61 publications

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“…Recently, it was reported that another ZIPmember, OsZIP9, contributes to Zn uptake in rice (Tan et al 2020, Yang et al 2020, Huang et al 2020b). OsZIP9 was localized at the exodermis and endodermis of mature root region and knockout of this gene resulted in significant decrease of Zn uptake under Zn‐limited condition (Huang et al 2020b).…”

Section: Discussionmentioning

confidence: 99%

Silicon suppresses zinc uptake through down‐regulating zinc transporter gene in rice

Huang

Feng

2020

Physiologia Plantarum

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One of the beneficial effects of silicon (Si) is to improve nutrient imbalance including deficiency and excess of nutrients, however the molecular mechanisms underlying this effect are still poorly understood. In this study, we investigated the interaction between Si and zinc (Zn) in rice by using a mutant (lsi1) defective in Si uptake and its wild-type (WT, cv. Oochikara) at different Zn levels. High Zn inhibited the root elongation of both WT and lsi1 mutant, but Si did not alleviate this inhibition in both lines. By contrast, Si supply decreased Zn concentration in both the roots and shoots of the WT, but not in the lsi1 mutant. A short-term (24 h) labeling experiment with stable isotope 67 Zn showed that Si decreased 67 Zn uptake, but did not affect the root-to-shoot translocation and distribution ratio to different organs of 67 Zn in the WT. Furthermore, Si accumulated in the shoots, rather than Si in the external solution, is required for suppressing Zn uptake, but this was not caused by Si-decreased transpiration. A kinetic study showed that Si did not affect K m value of root Zn uptake, but decreased V max value in the WT. Analysis of genes related with Zn transport showed that among ZIP family genes, the expression of only OsZIP1 implicated in Zn uptake, was down-regulated by Si in the WT, but not in the lsi1 mutant. These results indicate that Si accumulated in the shoots suppresses the Zn uptake through down-regulating the transporter gene involved in Zn uptake in rice.

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Section: Discussionmentioning

confidence: 99%

Silicon suppresses zinc uptake through down‐regulating zinc transporter gene in rice

Huang

Feng

2020

Physiologia Plantarum

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“…Primary Zn uptake from the soil is likely performed by members of the ZIP (Zinc-regulated/Iron-regulated transporter Protein) family 8 – 10 . In rice, OsZIP9 was recently described as responsible for Zn acquisition from the rhizosphere 11 – 13 . The ZIP transporters were the first Fe and Zn transporters characterized in plants, and have been shown to transport Fe, Zn and other divalent cations in several plant species 14 – 17 .…”

Section: Introductionmentioning

confidence: 99%

Arabidopsis thaliana zinc accumulation in leaf trichomes is correlated with zinc concentration in leaves

Ricachenevsky

Punshon

Salt

et al. 2021

Sci Rep

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Zinc (Zn) is a key micronutrient for plants and animals, and understanding Zn homeostasis in plants can improve both agriculture and human health. While root Zn transporters in plant model species have been characterized in detail, comparatively little is known about shoot processes controlling Zn concentrations and spatial distribution. Previous work showed that Zn hyperaccumulator species such as Arabidopsis halleri accumulate Zn and other metals in leaf trichomes. To date there is no systematic study regarding Zn accumulation in the trichomes of the non-accumulating, genetic model species A. thaliana. Here, we used Synchrotron X-Ray Fluorescence mapping to show that Zn accumulates at the base of trichomes of A. thaliana. Using transgenic and natural accessions of A thaliana that vary in bulk leaf Zn concentration, we demonstrate that higher leaf Zn increases total Zn found at the base of trichome cells. Our data indicates that Zn accumulation in trichomes is a function of the Zn status of the plant, and provides the basis for future studies on a genetically tractable plant species to understand the molecular steps involved in Zn spatial distribution in leaves.

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“…Primary Zn uptake are from the soil is likely 63 performed by genes of the ZIP (Zinc-regulated/Iron-regulated transporter Protein) family 64 (Assuncao et al, 2010;Milner et al, 2013;Sinclair et al, 2018). In rice, OsZIP9 was as 65 recently described as responsible for Zn acquisition from the rhizosphere (Huang et al, 66 2020;Tan et al, 2020;Yang et al, 2020). The ZIP transporters were the first Iron (Fe) and 67…”

mentioning

confidence: 99%

Arabidopsis thalianazinc accumulation in leaf trichomes is correlated with zinc concentration in leaves

Ricachenevsky

Punshon

Salt

et al. 2020

Preprint

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Zinc (Zn) is a key micronutrient. In humans, Zn deficiency is a common nutritional disorder, and most people acquire dietary Zn from eating plants. In plants, Zn deficiency can decrease plant growth and yield. Understanding Zn homeostasis in plants can improve agriculture and human health. While root Zn transporters in plat model species have been characterized in detail, comparatively little is known about shoot processes controlling Zn concentrations and spatial distribution. Previous work showed that Zn hyperaccumulator species such as Arabidopsis halleri accumulate Zn and other metals in leaf trichomes. The model species Arabidopsis thaliana is a non-accumulating plant, and to date there is no systematic study regarding Zn accumulation in A. thaliana trichomes. Here, we used Synchrotron X-Ray Fluorescence mapping to show that Zn accumulates at the base of trichomes of A. thaliana, as had seen previously for hyperaccumulators. Using transgenic and natural accessions of A. thaliana that vary in bulk leaf Zn concentration, we demonstrated that higher leaf Zn increases total Zn found at the base of trichome cells. Furthermore, our data suggests that Zn accumulates in the trichome apoplast, likely associated with the cell wall. Our data indicates that Zn accumulation in trichomes is a function of the Zn status of the plant, and provides the basis for future studies on a genetically tractable plant species aiming at understanding the molecular steps involved in Zn spatial distribution in leaves.

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A high activity zinc transporter OsZIP9 mediates zinc uptake in rice

Cited by 108 publications

References 61 publications

Silicon suppresses zinc uptake through down‐regulating zinc transporter gene in rice

Silicon suppresses zinc uptake through down‐regulating zinc transporter gene in rice

Arabidopsis thaliana zinc accumulation in leaf trichomes is correlated with zinc concentration in leaves

Arabidopsis thalianazinc accumulation in leaf trichomes is correlated with zinc concentration in leaves

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