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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/eru461
|2 doi
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|a pubmed25n0815.xml
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|a (DE-627)NLM244770263
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|a (NLM)25528599
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Zhu, Xiao Fang
|e verfasserin
|4 aut
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|a Pectin enhances rice (Oryza sativa) root phosphorus remobilization
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|c 2015
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 08.03.2016
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|a Date Revised 17.03.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © The Author 2014. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissionsoup.com.
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|a Plants growing in phosphorus (P)-deficient conditions can either increase their exploration of the environment (hence increasing P uptake) or can solubilize and reutilize P from established tissue sources. However, it is currently unclear if P stored in root cell wall can be reutilized. The present study shows that culture of the rice cultivars 'Nipponbare' (Nip) and 'Kasalath' (Kas) in P-deficient conditions results in progressive reductions in root soluble inorganic phosphate (Pi). However, Nip consistently maintains a higher level of soluble Pi and lower relative cell wall P content than does Kas, indicating that more cell wall P is released in Nip than in Kas. P-deficient Nip has a greater pectin and hemicellulose 1 (HC1) content than does P-deficient Kas, consistent with the significant positive relationship between pectin and root-soluble Pi levels amongst multiple rice cultivars. These observations suggest that increased soluble Pi might result from increased pectin content during P starvation. In vitro experiments showed that pectin releases Pi from insoluble FePO4. Furthermore, an Arabidopsis thaliana mutant with reduced pectin levels (qua1-2), has less root soluble Pi and is more sensitive to P deficiency than the wild type (WT) Col-0, whereas NaCl-treated WT plants exhibit both an increased root pectin content and an elevated soluble Pi content during P-starvation. These observations indicate that pectin can facilitate the remobilization of P deposited in the cell wall. This is a previously unknown mechanism for the reutilization of P in P-starved plants
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Arabidopsis.
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|a Phosphorus deficiency
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|a cell wall
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|a hemicellulose
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|a pectin
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|a rice
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|a Phosphates
|2 NLM
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| 650 |
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|a Plant Proteins
|2 NLM
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| 650 |
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|a Phosphorus
|2 NLM
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| 650 |
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|a 27YLU75U4W
|2 NLM
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| 650 |
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|a Pectins
|2 NLM
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| 650 |
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|a 89NA02M4RX
|2 NLM
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| 700 |
1 |
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|a Wang, Zhi Wei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wan, Jiang Xue
|e verfasserin
|4 aut
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| 700 |
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|a Sun, Ying
|e verfasserin
|4 aut
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|a Wu, Yun Rong
|e verfasserin
|4 aut
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| 700 |
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|a Li, Gui Xin
|e verfasserin
|4 aut
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|a Shen, Ren Fang
|e verfasserin
|4 aut
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|a Zheng, Shao Jian
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 66(2015), 3 vom: 20. Feb., Seite 1017-24
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:66
|g year:2015
|g number:3
|g day:20
|g month:02
|g pages:1017-24
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| 856 |
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|u http://dx.doi.org/10.1093/jxb/eru461
|3 Volltext
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|d 66
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|h 1017-24
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