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dc.contributor.author
Striker, Gustavo Gabriel
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dc.contributor.author
Kotula, Lukasz
dc.contributor.author
Colmer, Timothy D.
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dc.date.available
2022-09-12T03:31:33Z
dc.date.issued
2019-01
dc.identifier.citation
Striker, Gustavo Gabriel; Kotula, Lukasz; Colmer, Timothy D.; Tolerance to partial and complete submergence in the forage legume Melilotus siculus: An evaluation of 15 accessions for petiole hyponastic response and gas-filled spaces, leaf hydrophobicity and gas films, and root phellem; Oxford University Press; Annals of Botany; 123; 1; 1-2019; 169-180
dc.identifier.issn
0305-7364
dc.identifier.uri
http://hdl.handle.net/11336/168239
dc.description.abstract
• Background and Aims: Submergence is a severe stress for most plants. Melilotus siculus is a waterlogging- (i.e. root zone hypoxia) tolerant annual forage legume, but data were lacking for the effects of partial and full submergence of the shoots. The aim was to compare the tolerance to partial and full submergence of 15 M. siculus accessions and to assess variation in traits possibly contributing to tolerance. Recovery ability post-submergence was also evaluated. • Methods: A factorial experiment imposed treatments of water level [aerated root zone with shoots in air as controls, stagnant root zone with shoots in air, stagnant root zone with partial (75 %) or full shoot submergence] on 15 accessions, for 7 d on 4-week-old plants in a 20/15 °C day/night phytotron. Measurements included: shoot and root growth, hyponastic petiole responses, petiole gas-filled spaces, leaflet sugars, leaflet surface hydrophobicity, leaflet gas film thickness and phellem area near the base of the main root. Recovery following full submergence was also assessed. • Key Results: Accessions differed in shoot and root growth during partial and full shoot submergence. Traits differing among accessions and associated with tolerance were leaflet gas film thickness upon submergence, gas-filled spaces in petioles and phellem tissue area near the base of the main root. All accessions were able to re-orientate petioles towards the vertical under both partial and full submergence. Petiole extension rates were maintained during partial submergence, but decreased during full submergence. Leaflet sugars accumulated during partial submergence, but were depleted during full submergence. Growth resumption after full submergence differed among accessions and was positively correlated with the number of green leaves retained at desubmergence. • Conclusions: Melilotus siculus is able to tolerate partial and full submergence of at least 7 d. Leaflet surface hydrophobicity and associated gas film retention, petiole gas-filled porosity and root phellem abundance are important traits contributing to tolerance. Post-submergence recovery growth differs among accessions. The ability to retain green leaves is essential to succeed during recovery.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oxford University Press
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
AERENCHYMATOUS PHELLEM
dc.subject
DESUBMERGENCE
dc.subject
FLOODING STRESS
dc.subject
FORAGE PASTURE LEGUME
dc.subject
LEAF GAS FILMS
dc.subject
LEAF HYDROPHOBICITY
dc.subject
LEAF SUGARS
dc.subject
MESSINA
dc.subject
PETIOLE ANGLE
dc.subject
PETIOLE ELONGATION
dc.subject
PETIOLE GAS-FILLED POROSITY
dc.subject
WATERLOGGING
dc.subject.classification
Agricultura
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dc.subject.classification
Agricultura, Silvicultura y Pesca
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dc.subject.classification
CIENCIAS AGRÍCOLAS
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dc.title
Tolerance to partial and complete submergence in the forage legume Melilotus siculus: An evaluation of 15 accessions for petiole hyponastic response and gas-filled spaces, leaf hydrophobicity and gas films, and root phellem
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-12-15T14:18:22Z
dc.journal.volume
123
dc.journal.number
1
dc.journal.pagination
169-180
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Oxford
dc.description.fil
Fil: Striker, Gustavo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina. University of Western Australia; Australia
dc.description.fil
Fil: Kotula, Lukasz. University of Western Australia; Australia
dc.description.fil
Fil: Colmer, Timothy D.. University of Western Australia; Australia
dc.journal.title
Annals of Botany
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/aob/mcy153
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/aob/article/123/1/169/5075050
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