A low‐cost protocol for the optical method of vulnerability curves to calculate P50

Premise The quantification of plant drought resistance, particularly embolism formation, within and across species, is critical for ecosystem management and agriculture. We developed a cost‐effective protocol to measure the water potential at which 50% of hydraulic conductivity (P50) is lost in stem...

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Published inApplications in plant sciences Vol. 13; no. 2
Main Authors González‐Rebeles, Georgina, Alonso‐Arevalo, Miguel Ángel, López, Eulogio, Méndez‐Alonzo, Rodrigo
Format Journal Article
LanguageEnglish
Published Hoboken John Wiley & Sons, Inc 01.03.2025
Wiley
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ISSN2168-0450
2168-0450
DOI10.1002/aps3.70004

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Abstract Premise The quantification of plant drought resistance, particularly embolism formation, within and across species, is critical for ecosystem management and agriculture. We developed a cost‐effective protocol to measure the water potential at which 50% of hydraulic conductivity (P50) is lost in stems, using affordable and accessible materials in comparison to the traditional optical method. Methods and Results Our protocol uses inexpensive USB microscopes, which are secured along with the plants to a pegboard base to avoid movement. A Python program automatized the image acquisition. This method was applied to quantify P50 in an exotic species (Nicotiana glauca) and native species (Rhus integrifolia) of the Mediterranean vegetation in Baja California, Mexico. Conclusions The intra‐ and interspecific patterns of variation in stem P50 of N. glauca and R. integrifolia were obtained using the low‐cost optical method with widely available and affordable materials that can be easily replicated for other species. Resumen Premisa La cuantificación inter e intraespecífica de la resistencia de las plantas a la sequía, mediante la formación de embolismos, es fundamental para el manejo de ecosistemas y agricultura. Desarrollamos un método rentable para medir el potencial hídrico en el que se pierde 50% de la conductividad hidráulica (P50) en tallos, utilizando materiales asequibles y accesibles en comparación con el método óptico tradicional. Métodos y resultados Nuestro protocolo consiste en utilizar microscopios USB económicos que se aseguran con plantas en una base perforada para evitar su movimiento. Automatizamos con Python la adquisición de imágenes y cuantificamos P50 en una especie exótica (Nicotiana glauca) y una nativa (Rhus integrifolia) de la vegetación mediterránea en Baja California, México. Conclusiones Los patrones intra e interespecíficos de variación en el P50 de N. glauca y R. integrifolia se obtuvieron con el método óptico con materiales disponibles y asequibles y puede replicarse fácilmente con otras especies.
AbstractList Premise The quantification of plant drought resistance, particularly embolism formation, within and across species, is critical for ecosystem management and agriculture. We developed a cost‐effective protocol to measure the water potential at which 50% of hydraulic conductivity (P50) is lost in stems, using affordable and accessible materials in comparison to the traditional optical method. Methods and Results Our protocol uses inexpensive USB microscopes, which are secured along with the plants to a pegboard base to avoid movement. A Python program automatized the image acquisition. This method was applied to quantify P50 in an exotic species (Nicotiana glauca) and native species (Rhus integrifolia) of the Mediterranean vegetation in Baja California, Mexico. Conclusions The intra‐ and interspecific patterns of variation in stem P50 of N. glauca and R. integrifolia were obtained using the low‐cost optical method with widely available and affordable materials that can be easily replicated for other species. Resumen Premisa La cuantificación inter e intraespecífica de la resistencia de las plantas a la sequía, mediante la formación de embolismos, es fundamental para el manejo de ecosistemas y agricultura. Desarrollamos un método rentable para medir el potencial hídrico en el que se pierde 50% de la conductividad hidráulica (P50) en tallos, utilizando materiales asequibles y accesibles en comparación con el método óptico tradicional. Métodos y resultados Nuestro protocolo consiste en utilizar microscopios USB económicos que se aseguran con plantas en una base perforada para evitar su movimiento. Automatizamos con Python la adquisición de imágenes y cuantificamos P50 en una especie exótica (Nicotiana glauca) y una nativa (Rhus integrifolia) de la vegetación mediterránea en Baja California, México. Conclusiones Los patrones intra e interespecíficos de variación en el P50 de N. glauca y R. integrifolia se obtuvieron con el método óptico con materiales disponibles y asequibles y puede replicarse fácilmente con otras especies.
Abstract Premise The quantification of plant drought resistance, particularly embolism formation, within and across species, is critical for ecosystem management and agriculture. We developed a cost‐effective protocol to measure the water potential at which 50% of hydraulic conductivity (P50) is lost in stems, using affordable and accessible materials in comparison to the traditional optical method. Methods and Results Our protocol uses inexpensive USB microscopes, which are secured along with the plants to a pegboard base to avoid movement. A Python program automatized the image acquisition. This method was applied to quantify P50 in an exotic species (Nicotiana glauca) and native species (Rhus integrifolia) of the Mediterranean vegetation in Baja California, Mexico. Conclusions The intra‐ and interspecific patterns of variation in stem P50 of N. glauca and R. integrifolia were obtained using the low‐cost optical method with widely available and affordable materials that can be easily replicated for other species.
Premisa La cuantificación inter e intraespecífica de la resistencia de las plantas a la sequía, mediante la formación de embolismos, es fundamental para el manejo de ecosistemas y agricultura. Desarrollamos un método rentable para medir el potencial hídrico en el que se pierde 50% de la conductividad hidráulica (P50) en tallos, utilizando materiales asequibles y accesibles en comparación con el método óptico tradicional. Métodos y resultados Nuestro protocolo consiste en utilizar microscopios USB económicos que se aseguran con plantas en una base perforada para evitar su movimiento. Automatizamos con Python la adquisición de imágenes y cuantificamos P50 en una especie exótica (Nicotiana glauca) y una nativa (Rhus integrifolia) de la vegetación mediterránea en Baja California, México. Conclusiones Los patrones intra e interespecíficos de variación en el P50 de N. glauca y R. integrifolia se obtuvieron con el método óptico con materiales disponibles y asequibles y puede replicarse fácilmente con otras especies.
PREMISE: The quantification of plant drought resistance, particularly embolism formation, within and across species, is critical for ecosystem management and agriculture. We developed a cost‐effective protocol to measure the water potential at which 50% of hydraulic conductivity (P₅₀) is lost in stems, using affordable and accessible materials in comparison to the traditional optical method. METHODS AND RESULTS: Our protocol uses inexpensive USB microscopes, which are secured along with the plants to a pegboard base to avoid movement. A Python program automatized the image acquisition. This method was applied to quantify P₅₀ in an exotic species (Nicotiana glauca) and native species (Rhus integrifolia) of the Mediterranean vegetation in Baja California, Mexico. CONCLUSIONS: The intra‐ and interspecific patterns of variation in stem P₅₀ of N. glauca and R. integrifolia were obtained using the low‐cost optical method with widely available and affordable materials that can be easily replicated for other species.
Author González‐Rebeles, Georgina
López, Eulogio
Alonso‐Arevalo, Miguel Ángel
Méndez‐Alonzo, Rodrigo
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Snippet Premise The quantification of plant drought resistance, particularly embolism formation, within and across species, is critical for ecosystem management and...
Premisa La cuantificación inter e intraespecífica de la resistencia de las plantas a la sequía, mediante la formación de embolismos, es fundamental para el...
PREMISE: The quantification of plant drought resistance, particularly embolism formation, within and across species, is critical for ecosystem management and...
Abstract Premise The quantification of plant drought resistance, particularly embolism formation, within and across species, is critical for ecosystem...
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Aggregation Database
Publisher
SubjectTerms Biodiversity
Brand names
computer software
cost effectiveness
cost‐effective protocols
curvas de vulnerabilidad
Digital cameras
Drought
drought tolerance
ecosystem management
embolism
hydraulic conductivity
Hydraulics
image processing
indigenous species
introduced species
Light
Methods
Mexico
Microscopes
método óptico
Nicotiana glauca
percentage of embolisms accumulated
Physiology
Plywood
porcentaje de embolismos acumulados
potencial hídrico del tallo
procesamiento de imágenes
protocols
Rhus
Scanners
Smartphones
species
stem water potential
tejido del xilema
vegetation
Water
water potential
xylem tissue
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Title A low‐cost protocol for the optical method of vulnerability curves to calculate P50
URI https://onlinelibrary.wiley.com/doi/abs/10.1002%2Faps3.70004
https://www.proquest.com/docview/3196048741
https://www.proquest.com/docview/3242065127
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Volume 13
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