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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1111/nph.14245
|2 doi
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|a pubmed25n0884.xml
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|a (NLM)27735069
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|a DE-627
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|e rakwb
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|a eng
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|a Nardini, Andrea
|e verfasserin
|4 aut
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|a X-ray microtomography observations of xylem embolism in stems of Laurus nobilis are consistent with hydraulic measurements of percentage loss of conductance
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|c 2017
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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 21.02.2018
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2016 The Authors. New Phytologist © 2016 New Phytologist Trust.
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|a Drought-induced xylem embolism is a serious threat to plant survival under future climate scenarios. Hence, accurate quantification of species-specific vulnerability to xylem embolism is a key to predict the impact of climate change on vegetation. Low-cost hydraulic measurements of embolism rate have been suggested to be prone to artefacts, thus requiring validation by direct visualization of the functional status of xylem conduits using nondestructive imaging techniques, such as X-ray microtomography (microCT). We measured the percentage loss of conductance (PLC) of excised stems of Laurus nobilis (laurel) dehydrated to different xylem pressures, and compared results with direct observation of gas-filled vs water-filled conduits at a synchrotron-based microCT facility using a phase contrast imaging modality. Theoretical PLC calculated on the basis of microCT observations in stems of laurel dehydrated to different xylem pressures overall were in agreement with hydraulic measurements, revealing that this species suffers a 50% loss of xylem hydraulic conductance at xylem pressures averaging -3.5 MPa. Our data support the validity of estimates of xylem vulnerability to embolism based on classical hydraulic techniques. We discuss possible causes of discrepancies between data gathered in this study and those of recent independent reports on laurel hydraulics
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|a Journal Article
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|a X-ray microtomography (microCT)
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|a embolism
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|a hydraulics
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|a laurel (Laurus nobilis)
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|a percentage loss of conductance (PLC)
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|a synchrotron
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|a xylem
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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1 |
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|a Savi, Tadeja
|e verfasserin
|4 aut
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|a Losso, Adriano
|e verfasserin
|4 aut
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| 700 |
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|a Petit, Giai
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Pacilè, Serena
|e verfasserin
|4 aut
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|a Tromba, Giuliana
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Mayr, Stefan
|e verfasserin
|4 aut
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|a Trifilò, Patrizia
|e verfasserin
|4 aut
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1 |
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|a Lo Gullo, Maria A
|e verfasserin
|4 aut
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|a Salleo, Sebastiano
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1990
|g 213(2017), 3 vom: 05. Feb., Seite 1068-1075
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:213
|g year:2017
|g number:3
|g day:05
|g month:02
|g pages:1068-1075
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|u http://dx.doi.org/10.1111/nph.14245
|3 Volltext
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