Root or shoot nitrate assimilation in terrestrial vascular plants – does it matter?

Andrews, M; Raven, JA

Root or shoot nitrate assimilation in terrestrial vascular plants – does it matter?

Andrews, M Raven, JA

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Publisher:: Springer Nature
Publication Type:: Journal Article
Citation:: Plant and Soil, 2022, 476, (1-2), pp. 31-62
Issue Date:: 2022-01-31

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Field	Value	Language
dc.contributor.author	Andrews, M
dc.contributor.author	Raven, JA
dc.date.accessioned	2023-04-12T21:05:38Z
dc.date.available	2023-04-12T21:05:38Z
dc.date.issued	2022-01-31
dc.identifier.citation	Plant and Soil, 2022, 476, (1-2), pp. 31-62
dc.identifier.issn	0032-079X
dc.identifier.issn	1573-5036
dc.identifier.uri	http://hdl.handle.net/10453/169655
dc.description.abstract	BackgroundMost terrestrial vascular plants can assimilate soil obtained NO3- in their root and shoot.ScopeData from the literature are collated and analysed with respect to genotype and environmental effects on the partitioning of NO3- assimilation between root and shoot of terrestrial vascular plants.ConclusionsTemperate evergreen woody species in the Ericaceae and Pinaceae carry out most of their NO3- assimilation in the root when growing in low (0.5 mM) up to at least 5 mM soil NO3-. The root is the main site of NO3- assimilation for temperate deciduous woody species and perennial and annual herbaceous legume species at 0.5–1 mM NO3- but for many, shoot assimilation increases in importance with increased NO3- supply. Temperate perennial grasses and annual non-legume species and tropical/ sub-tropical species regardless of life-form, carry out a substantial, usually major proportion of their NO3- assimilation in shoots at NO3- concentrations above 0.5 mM. Furthermore, high NH4+ supply, mycorrhizal infection and infection by parasitic plants can increase the proportion of total plant NO3- assimilation carried out in the shoot while abiotic stress and elevated atmospheric [CO2] can cause this to decrease. Shoot NO3- assimilation is an advantage under non-stress conditions due to its positive effect on leaf expansion but can be a disadvantage under freezing and chilling stress conditions. Increased reliance on root NO3- assimilation at elevated CO2 was associated with increased and conversely decreased plant growth and NO3- assimilation depending on study. Resolution of these different findings across studies is an important area for further research.
dc.language	en
dc.publisher	Springer Nature
dc.relation.ispartof	Plant and Soil
dc.relation.isbasedon	10.1007/s11104-021-05164-9
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	05 Environmental Sciences, 06 Biological Sciences, 07 Agricultural and Veterinary Sciences
dc.subject.classification	Agronomy & Agriculture
dc.title	Root or shoot nitrate assimilation in terrestrial vascular plants – does it matter?
dc.type	Journal Article
utslib.citation.volume	476
utslib.for	05 Environmental Sciences
utslib.for	06 Biological Sciences
utslib.for	07 Agricultural and Veterinary Sciences
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
utslib.copyright.status	closed_access	*
dc.date.updated	2023-04-12T21:05:36Z
pubs.issue	1-2
pubs.publication-status	Published
pubs.volume	476
utslib.citation.issue	1-2

Abstract:

BackgroundMost terrestrial vascular plants can assimilate soil obtained NO3- in their root and shoot.ScopeData from the literature are collated and analysed with respect to genotype and environmental effects on the partitioning of NO3- assimilation between root and shoot of terrestrial vascular plants.ConclusionsTemperate evergreen woody species in the Ericaceae and Pinaceae carry out most of their NO3- assimilation in the root when growing in low (0.5 mM) up to at least 5 mM soil NO3-. The root is the main site of NO3- assimilation for temperate deciduous woody species and perennial and annual herbaceous legume species at 0.5–1 mM NO3- but for many, shoot assimilation increases in importance with increased NO3- supply. Temperate perennial grasses and annual non-legume species and tropical/ sub-tropical species regardless of life-form, carry out a substantial, usually major proportion of their NO3- assimilation in shoots at NO3- concentrations above 0.5 mM. Furthermore, high NH4+ supply, mycorrhizal infection and infection by parasitic plants can increase the proportion of total plant NO3- assimilation carried out in the shoot while abiotic stress and elevated atmospheric [CO2] can cause this to decrease. Shoot NO3- assimilation is an advantage under non-stress conditions due to its positive effect on leaf expansion but can be a disadvantage under freezing and chilling stress conditions. Increased reliance on root NO3- assimilation at elevated CO2 was associated with increased and conversely decreased plant growth and NO3- assimilation depending on study. Resolution of these different findings across studies is an important area for further research.

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http://hdl.handle.net/10453/169655