The node, a hub for mineral nutrient distribution in graminaceous plants

Yamaji, Naoki; Feng, Jian

doi:10.1016/j.tplants.2014.05.007

Cited by 271 publications

(236 citation statements)

References 25 publications

Supporting

Mentioning

225

Contrasting

Unclassified

Order By: Relevance

“…However, the molecular mechanisms for these systems are poorly understood. Recently, several studies have shown that nodes function as a hub for distribution of mineral elements in graminaceous plants (2).…”

mentioning

confidence: 99%

See 1 more Smart Citation

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.

Self Cite

176

122

View full text Add to dashboard Cite

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

show abstract

mentioning

confidence: 99%

“…Node is a key component of the phytomer in graminaceous plants, which is connected with a leaf, a tiller (or a tiller bud), and crown roots (or these primordia) to the culm or panicle (2,3). Therefore, graminaceous plants are composed of repeated nodes.…”

mentioning

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.

Self Cite

176

122

View full text Add to dashboard Cite

show abstract

“…In this study, we found that OsNIP3;1 localized in the nodes is required for this preferential distribution of B in rice. Nodes are the hub of distribution of mineral elements (Yamaji and Ma, 2014), which have a complexed but well organized vascular system. We found that OsNIP3;1 is highly expressed in the nodes at both the vegetative and reproductive growth stage (Fig.…”

Section: Silicon Transporter Lsi1 Largely Contributes To B Uptakementioning

confidence: 99%

“…8B). However, because OsNIP3;1 is a passive channel for boric acid, a cooperative efflux transporter for the intervascular transfer of B is required as a driving force (Yamaji and Ma, 2014;Yamaji et al, 2015;Yamaji and Ma, 2017), which remains to be identified. Localization of OsNIP3;1 is also observed in the xylem region of leaf sheath and peduncle (Fig.…”

Section: Silicon Transporter Lsi1 Largely Contributes To B Uptakementioning

confidence: 99%

“…Therefore, there must be a system for such preferential distribution of B especially under B-limited condition, but for a long time it has been a mystery on how B taken up by the roots is preferentially distributed to the developing tissues. Recently, nodes in gramineous plants were found to play an important role in distribution of mineral elements (Yamaji and Ma, 2014;. 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.…”

mentioning

confidence: 99%

See 1 more Smart Citation

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

et al. 2017

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Shoots

Kraehmer

2019

Grasses

View full text Add to dashboard Cite

The node, a hub for mineral nutrient distribution in graminaceous plants

Cited by 271 publications

References 25 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

Shoots

Contact Info

Product

Resources

About