A node-based switch for preferential distribution of manganese in rice

Yamaji, Naoki; Sasaki, Akimasa; Xia, Jixing; Yokosho, Kengo; Feng, Jian

doi:10.1038/ncomms3442

Cited by 208 publications

(175 citation statements)

References 21 publications

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“…Recently, identification of mineral nutrient transporters in node and physiological studies shed a new light on the importance of node for preferential distribution of mineral nutrients to developing and reproductive organs (2,14,(18)(19)(20)(21)(22)(23). The xylem flow in EVBs and DVBs, which are connected by nodal vascular anastomosis (NVA) at the base of the node, are simply divided following the transpiration rate of each upper organ.…”

Section: Discussionmentioning

confidence: 99%

“…Although different transporters are supposed to be involved in these steps, only a few of them in some steps have been identified. For instance, Lsi6 is involved in Si unloading from EVB (14, 18); OsHMA5 and OsYSL16 are involved in Cu exclusion from xylem and loading to phloem of DVB, respectively (19,20), whereas OsHMA2 is required for Zn/Cd reloading to phloem of DVB (21); and OsNramp3 has a dual role for both xylem unloading from EVB and phloem reloading to DVB of Mn (22). In the present study, by integrating in vivo experiments with mathematical modeling, we were able to identify all factors involved in the intervascular transfer for preferential distribution of Si in node (Fig.…”

Section: Discussionmentioning

confidence: 99%

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Orchestration of three transporters and distinct vascular structures in node for intervascular transfer of silicon in rice

Yamaji

Sakurai

Mitani‐Ueno

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

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Requirement of mineral elements in different plant tissues is not often consistent with their transpiration rate; therefore, plants have developed systems for preferential distribution of mineral elements to the developing tissues with low transpiration. Here we took silicon (Si) as an example and revealed an efficient system for preferential distribution of Si in the node of rice (Oryza sativa). Rice is able to accumulate more than 10% Si of the dry weight in the husk, which is required for protecting the grains from water loss and pathogen infection. However, it has been unknown for a long time how this hyperaccumulation is achieved. We found that three transporters (Lsi2, Lsi3, and Lsi6) located at the node are involved in the intervascular transfer, which is required for the preferential distribution of Si. Lsi2 was polarly localized to the bundle sheath cell layer around the enlarged vascular bundles, which is next to the xylem transfer cell layer where Lsi6 is localized. Lsi3 was located in the parenchyma tissues between enlarged vascular bundles and diffuse vascular bundles. Similar to Lsi6, knockout of Lsi2 and Lsi3 also resulted in decreased distribution of Si to the panicles but increased Si to the flag leaf. Furthermore, we constructed a mathematical model for Si distribution and revealed that in addition to cooperation of three transporters, an apoplastic barrier localized at the bundle sheath cells and development of the enlarged vascular bundles in node are also required for the hyperaccumulation of Si in rice husk.node | rice transporter | apoplastic barrier | silicon distribution | mathematical model

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Orchestration of three transporters and distinct vascular structures in node for intervascular transfer of silicon in rice

Yamaji

Sakurai

Mitani‐Ueno

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

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179

122

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“…Moreover, Arabidopsis does not have Si channel homologous to rice Lsi1 in the genome . This regulation mechanism is similar to that for Mn in rice (Yamaji et al, 2013;Shao et al, 2017). OsNramp3 in the node required for Mn distribution, rather than OsNramp5 and OsMTP9 in the roots for Mn uptake, is regulated at the protein level in response to environmental Mn change (Shao et al, 2017).…”

Section: Different Regulation Of B Accumulation In Rice and Arabidopsismentioning

confidence: 87%

“…At times indicated, the roots, shoot basal region, and shoots were sampled. The expression of OsNIP3;1 was also investigated in different organs at different growth stages in rice grown in a paddy field using the same samples described previously (Yamaji et al, 2013).…”

Section: Gene Expression Pattern Of Osnip3;1 and Oslsi1mentioning

confidence: 99%

“…Several transporters involved in the intervascular transfer from enlarged vascular bundle to diffuse vascular bundle for preferential distribution have been identified, but most transporters localized in the nodes have not been functionally characterized. Our genomewide transcriptional analysis with rice node found that a member of nodulin 26-like intrinsic protein (NIP), OsNIP3;1, was highly expressed in the node (Yamaji et al, 2013). OsNIP3;1 is the closest homolog of AtNIP5;1 .…”

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confidence: 99%

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Preferential Distribution of Boron to Developing Tissues Is Mediated by the Intrinsic Protein OsNIP3

et al. 2017

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Boron is especially required for the growth of meristem and reproductive organs, but the molecular mechanisms underlying the preferential distribution of B to these developing tissues are poorly understood. Here, we show evidence that a member of nodulin 26-like intrinsic protein (NIP), OsNIP3;1, is involved in this preferential distribution in rice (Oryza sativa). OsNIP3;1 was highly expressed in the nodes and its expression was up-regulated by B deficiency, but down-regulated by high B. OsNIP3;1 was polarly localized at the xylem parenchyma cells of enlarged vascular bundles of nodes facing toward the xylem vessels. Furthermore, this protein was rapidly degraded within a few hours in response to high B. Knockout of this gene hardly affected the uptake and root-to-shoot translocation of B, but altered B distribution in different organs in the above-ground parts, decreased distribution of B to the new leaves, and increased distribution to the old leaves. These results indicate that OsNIP3;1 located in the nodes is involved in the preferential distribution of B to the developing tissues by unloading B from the xylem in rice and that it is regulated at both transcriptional and protein level in response to external B level.

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Biofortification of common bean (Phaseolus vulgaris L.) with iron and zinc: Achievements and challenges

Huertas

Karpińska

Ngala

et al. 2022

Food and Energy Security

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Micronutrient deficiencies (hidden hunger), particularly in iron (Fe) and zinc (Zn), remain one of the most serious public health challenges, affecting more than three billion people globally. A number of strategies are used to ameliorate the problem of micronutrient deficiencies and to improve the nutritional profile of food products. These include (i) dietary diversification, (ii) industrial food fortification and supplements, (iii) agronomic approaches including soil mineral fertilisation, bioinoculants and crop rotations, and (iv) biofortification through the implementation of biotechnology including gene editing and plant breeding.These efforts must consider the dietary patterns and culinary preferences of the consumer and stakeholder acceptance of new biofortified varieties. Deficiencies in Zn and Fe are often linked to the poor nutritional status of agricultural soils, resulting in low amounts and/or poor availability of these nutrients in staple food crops such as common bean. This review describes the genes and processes associated with Fe and Zn accumulation in common bean, a significant food source in Africa that plays an important role in nutritional security. We discuss the conventional plant breeding, transgenic and gene editing approaches that are being deployed to improve Fe and Zn accumulation in beans. We also consider the requirements of successful bean biofortification programmes, highlighting gaps in current knowledge, possible solutions and future perspectives.

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A node-based switch for preferential distribution of manganese in rice

Cited by 208 publications

References 21 publications

Orchestration of three transporters and distinct vascular structures in node for intervascular transfer of silicon in rice

Orchestration of three transporters and distinct vascular structures in node for intervascular transfer of silicon in rice

Preferential Distribution of Boron to Developing Tissues Is Mediated by the Intrinsic Protein OsNIP3

Biofortification of common bean (Phaseolus vulgaris L.) with iron and zinc: Achievements and challenges

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