A transporter at the node responsible for intervascular transfer of silicon in rice

Research output: Contribution to journalArticle

96 Citations (Scopus)

Abstract

The concentration of essential mineral nutrients in the edible portion of plants such as grains may affect the nutritional value of these foods, while concentrations of toxic minerals in the plant are matter of food safety. Minerals taken up by the roots from soils are normally redirected at plant nodes before they are finally transported into developing seeds. However, the molecular mechanisms involved in this process have not been identified so far. Herein, we report on a transporter (Lsi6) responsible for the redirection of a plant nutrient at the node. Lsi6 is a silicon transporter in rice (Oryza sativa), and its expression in node I below the panicles is greatly enhanced when the panicle is completely emerged. Lsi6 is mainly localized at the xylem transfer cells located at the outer boundary region of the enlarged large vascular bundles in node I. Knockout of Lsi6 decreased Si accumulation in the panicles but increased Si accumulation in the flag leaf. These results suggest that Lsi6 is a transporter involved in intervascular transfer (i.e., transfer of silicon from the large vascular bundles coming from the roots to the diffuse vascular bundles connected to the panicles). These findings will be useful for selectively enhancing the accumulation of essential nutrients and reducing toxic minerals in the edible portion of cereals.

Original languageEnglish
Pages (from-to)2878-2883
Number of pages6
JournalPlant Cell
Volume21
Issue number9
DOIs
Publication statusPublished - 2009

Fingerprint

Silicon
silicon
Minerals
transporters
vascular bundles
minerals
Blood Vessels
rice
Food
inflorescences
Poisons
nutrients
Xylem
Edible Plants
Food Safety
Nutritive Value
xylem
food safety
Seeds
Oryza sativa

ASJC Scopus subject areas

  • Plant Science
  • Cell Biology

Cite this

A transporter at the node responsible for intervascular transfer of silicon in rice. / Yamaji, Naoki; Ma, Jian Feng.

In: Plant Cell, Vol. 21, No. 9, 2009, p. 2878-2883.

Research output: Contribution to journalArticle

@article{7aa8a78edd6b485fa2e1e67ad07e706d,
title = "A transporter at the node responsible for intervascular transfer of silicon in rice",
abstract = "The concentration of essential mineral nutrients in the edible portion of plants such as grains may affect the nutritional value of these foods, while concentrations of toxic minerals in the plant are matter of food safety. Minerals taken up by the roots from soils are normally redirected at plant nodes before they are finally transported into developing seeds. However, the molecular mechanisms involved in this process have not been identified so far. Herein, we report on a transporter (Lsi6) responsible for the redirection of a plant nutrient at the node. Lsi6 is a silicon transporter in rice (Oryza sativa), and its expression in node I below the panicles is greatly enhanced when the panicle is completely emerged. Lsi6 is mainly localized at the xylem transfer cells located at the outer boundary region of the enlarged large vascular bundles in node I. Knockout of Lsi6 decreased Si accumulation in the panicles but increased Si accumulation in the flag leaf. These results suggest that Lsi6 is a transporter involved in intervascular transfer (i.e., transfer of silicon from the large vascular bundles coming from the roots to the diffuse vascular bundles connected to the panicles). These findings will be useful for selectively enhancing the accumulation of essential nutrients and reducing toxic minerals in the edible portion of cereals.",
author = "Naoki Yamaji and Ma, {Jian Feng}",
year = "2009",
doi = "10.1105/tpc.109.069831",
language = "English",
volume = "21",
pages = "2878--2883",
journal = "Plant Cell",
issn = "1040-4651",
publisher = "American Society of Plant Biologists",
number = "9",

}

TY - JOUR

T1 - A transporter at the node responsible for intervascular transfer of silicon in rice

AU - Yamaji, Naoki

AU - Ma, Jian Feng

PY - 2009

Y1 - 2009

N2 - The concentration of essential mineral nutrients in the edible portion of plants such as grains may affect the nutritional value of these foods, while concentrations of toxic minerals in the plant are matter of food safety. Minerals taken up by the roots from soils are normally redirected at plant nodes before they are finally transported into developing seeds. However, the molecular mechanisms involved in this process have not been identified so far. Herein, we report on a transporter (Lsi6) responsible for the redirection of a plant nutrient at the node. Lsi6 is a silicon transporter in rice (Oryza sativa), and its expression in node I below the panicles is greatly enhanced when the panicle is completely emerged. Lsi6 is mainly localized at the xylem transfer cells located at the outer boundary region of the enlarged large vascular bundles in node I. Knockout of Lsi6 decreased Si accumulation in the panicles but increased Si accumulation in the flag leaf. These results suggest that Lsi6 is a transporter involved in intervascular transfer (i.e., transfer of silicon from the large vascular bundles coming from the roots to the diffuse vascular bundles connected to the panicles). These findings will be useful for selectively enhancing the accumulation of essential nutrients and reducing toxic minerals in the edible portion of cereals.

AB - The concentration of essential mineral nutrients in the edible portion of plants such as grains may affect the nutritional value of these foods, while concentrations of toxic minerals in the plant are matter of food safety. Minerals taken up by the roots from soils are normally redirected at plant nodes before they are finally transported into developing seeds. However, the molecular mechanisms involved in this process have not been identified so far. Herein, we report on a transporter (Lsi6) responsible for the redirection of a plant nutrient at the node. Lsi6 is a silicon transporter in rice (Oryza sativa), and its expression in node I below the panicles is greatly enhanced when the panicle is completely emerged. Lsi6 is mainly localized at the xylem transfer cells located at the outer boundary region of the enlarged large vascular bundles in node I. Knockout of Lsi6 decreased Si accumulation in the panicles but increased Si accumulation in the flag leaf. These results suggest that Lsi6 is a transporter involved in intervascular transfer (i.e., transfer of silicon from the large vascular bundles coming from the roots to the diffuse vascular bundles connected to the panicles). These findings will be useful for selectively enhancing the accumulation of essential nutrients and reducing toxic minerals in the edible portion of cereals.

UR - http://www.scopus.com/inward/record.url?scp=70849095981&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70849095981&partnerID=8YFLogxK

U2 - 10.1105/tpc.109.069831

DO - 10.1105/tpc.109.069831

M3 - Article

VL - 21

SP - 2878

EP - 2883

JO - Plant Cell

JF - Plant Cell

SN - 1040-4651

IS - 9

ER -