Discerning the effects of phosphate status on the metabolism of hybrid poplar.
Identifieur interne : 000601 ( Main/Corpus ); précédent : 000600; suivant : 000602Discerning the effects of phosphate status on the metabolism of hybrid poplar.
Auteurs : Letitia M. Da Ros ; Raju Y. Soolanayakanahally ; Shawn D. MansfieldSource :
- Tree physiology [ 1758-4469 ] ; 2020.
English descriptors
- KwdEn :
- MESH :
- chemical : Phosphates.
- genetics : Populus.
- Nutrients, Plant Leaves, Plant Roots.
Abstract
Accumulation of phosphate in leaves as external environmental phosphate concentrations increase has been observed across the plant kingdom. The excess storage of anions, such as phosphate, has various metabolic trade-offs, including a corresponding influx of counter-ions to maintain charge balance and/or the reduction in organic acid content to maintain internal pH. The leaves and roots of four hybrid poplar genotypes were tested for differences in metabolic response to increasing external phosphate and further effects on patterns of anion resorption among hybrid poplar and willow were explored. Organic acid concentrations increased or remained constant across treatments, suggesting that metabolic adjustments were made in response to greater influxes of inorganic cations rather than a response to increasing phosphate. During senescence, the hybrid poplar Tristis had higher sulfate and organic acid resorption, while hybrid willow, AAFC-5, had higher phosphate resorption proficiencies, suggesting differing anion remobilization mechanisms. Furthermore, phosphate accumulation was shown to continue well after bud-set in poplar hybrids, which may contribute to the low phosphorus resorption efficiency. This indicates that closely related species, with similar growth strategies, show preferential resorption toward different nutrients.
DOI: 10.1093/treephys/tpz114
PubMed: 31748816
Links to Exploration step
pubmed:31748816Le document en format XML
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<author><name sortKey="Da Ros, Letitia M" sort="Da Ros, Letitia M" uniqKey="Da Ros L" first="Letitia M" last="Da Ros">Letitia M. Da Ros</name>
<affiliation><nlm:affiliation>University of British Columbia, Department of Wood Science, 2424 Main Mall, Vancouver, BC V6T1Z4, Canada.</nlm:affiliation>
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<author><name sortKey="Soolanayakanahally, Raju Y" sort="Soolanayakanahally, Raju Y" uniqKey="Soolanayakanahally R" first="Raju Y" last="Soolanayakanahally">Raju Y. Soolanayakanahally</name>
<affiliation><nlm:affiliation>Indian Head Research Farm, Agriculture and Agri-Food Canada, Indian Head, SK S0G 2K0, Canada.</nlm:affiliation>
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<author><name sortKey="Mansfield, Shawn D" sort="Mansfield, Shawn D" uniqKey="Mansfield S" first="Shawn D" last="Mansfield">Shawn D. Mansfield</name>
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<author><name sortKey="Mansfield, Shawn D" sort="Mansfield, Shawn D" uniqKey="Mansfield S" first="Shawn D" last="Mansfield">Shawn D. Mansfield</name>
<affiliation><nlm:affiliation>University of British Columbia, Department of Wood Science, 2424 Main Mall, Vancouver, BC V6T1Z4, Canada.</nlm:affiliation>
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<series><title level="j">Tree physiology</title>
<idno type="eISSN">1758-4469</idno>
<imprint><date when="2020" type="published">2020</date>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Nutrients (MeSH)</term>
<term>Phosphates (MeSH)</term>
<term>Plant Leaves (MeSH)</term>
<term>Plant Roots (MeSH)</term>
<term>Populus (genetics)</term>
</keywords>
<keywords scheme="MESH" type="chemical" xml:lang="en"><term>Phosphates</term>
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<keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Populus</term>
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<front><div type="abstract" xml:lang="en">Accumulation of phosphate in leaves as external environmental phosphate concentrations increase has been observed across the plant kingdom. The excess storage of anions, such as phosphate, has various metabolic trade-offs, including a corresponding influx of counter-ions to maintain charge balance and/or the reduction in organic acid content to maintain internal pH. The leaves and roots of four hybrid poplar genotypes were tested for differences in metabolic response to increasing external phosphate and further effects on patterns of anion resorption among hybrid poplar and willow were explored. Organic acid concentrations increased or remained constant across treatments, suggesting that metabolic adjustments were made in response to greater influxes of inorganic cations rather than a response to increasing phosphate. During senescence, the hybrid poplar Tristis had higher sulfate and organic acid resorption, while hybrid willow, AAFC-5, had higher phosphate resorption proficiencies, suggesting differing anion remobilization mechanisms. Furthermore, phosphate accumulation was shown to continue well after bud-set in poplar hybrids, which may contribute to the low phosphorus resorption efficiency. This indicates that closely related species, with similar growth strategies, show preferential resorption toward different nutrients.</div>
</front>
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<DateRevised><Year>2020</Year>
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<Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1758-4469</ISSN>
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<Title>Tree physiology</Title>
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<Abstract><AbstractText>Accumulation of phosphate in leaves as external environmental phosphate concentrations increase has been observed across the plant kingdom. The excess storage of anions, such as phosphate, has various metabolic trade-offs, including a corresponding influx of counter-ions to maintain charge balance and/or the reduction in organic acid content to maintain internal pH. The leaves and roots of four hybrid poplar genotypes were tested for differences in metabolic response to increasing external phosphate and further effects on patterns of anion resorption among hybrid poplar and willow were explored. Organic acid concentrations increased or remained constant across treatments, suggesting that metabolic adjustments were made in response to greater influxes of inorganic cations rather than a response to increasing phosphate. During senescence, the hybrid poplar Tristis had higher sulfate and organic acid resorption, while hybrid willow, AAFC-5, had higher phosphate resorption proficiencies, suggesting differing anion remobilization mechanisms. Furthermore, phosphate accumulation was shown to continue well after bud-set in poplar hybrids, which may contribute to the low phosphorus resorption efficiency. This indicates that closely related species, with similar growth strategies, show preferential resorption toward different nutrients.</AbstractText>
<CopyrightInformation>© The Author(s) 2019. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.</CopyrightInformation>
</Abstract>
<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Da Ros</LastName>
<ForeName>Letitia M</ForeName>
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<AffiliationInfo><Affiliation>University of British Columbia, Department of Wood Science, 2424 Main Mall, Vancouver, BC V6T1Z4, Canada.</Affiliation>
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<MeshHeading><DescriptorName UI="D018515" MajorTopicYN="N">Plant Leaves</DescriptorName>
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<MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName>
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<MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName>
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<KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="Y">PHT1 family</Keyword>
<Keyword MajorTopicYN="Y">Salicaceae</Keyword>
<Keyword MajorTopicYN="Y">anion resorption</Keyword>
<Keyword MajorTopicYN="Y">ion homeostasis</Keyword>
<Keyword MajorTopicYN="Y">metabolic trade-offs</Keyword>
<Keyword MajorTopicYN="Y">nutrient allocation</Keyword>
<Keyword MajorTopicYN="Y">phosphorus</Keyword>
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