Relationship between hydraulic resistance and leaf morphology in broadleaf Quercus species: a new interpretation of leaf lobation

Sisó, Sergio; Camarero, J. Julio; Gil‐Pelegrín, Eustaquio

doi:10.1007/s004680100110

Cited by 78 publications

(58 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Similar results have been found for Quercus in response to different levels of ambient light and to nutritional stress (Balaguer et al, 2001;Valladares et al, 2000). Sisó et al (2001) have shown that leaf hydraulic resistance was negatively related to ILB in broadleaf Quercus species, suggesting that the lower hydraulic resistance in deeply lobed leaves may constitute a mechanism for improving water balance under dry atmospheric conditions.…”

Section: Discussionsupporting

confidence: 79%

Adaptive diversity in Castanea sativa Mill. half-sib progenies in response to drought stress

Ciordia

Feito

Pereira‐Lorenzo

et al. 2012

Environmental and Experimental Botany

View full text Add to dashboard Cite

a b s t r a c tVariation patterns in phenotypic expression after cultivation in two water regimes: 50% and 90% substrate saturation were studied in progenies of chestnut (Castanea sativa Mill.) cultivars originating from two main origins in the Iberian Peninsula: North (specifically from Asturias and Galicia) and Central Iberian Peninsula (specifically from the Canary Islands and Andalusia in Southern Spain related to this gene pool). The restricted water supply reduced the water potential of all the families as well as their growth, both in terms of height and weight. Root development increased whilst leaf area decreased as a result of reduction in number and surface area of individual leaves as well as sprouting rather than through defoliation. Drought stress also modified the morphology of the leaves and the relationships indicating the rate of relative development of the leaves compared to the rest of the plant. A correlation with the minimum summer rainfall in the regions of provenance was observed for several traits. The phenotypic variation observed was greater than expected from progenies of selected fruit cultivars. The results of this study show that (i) phenotypic variation exists between the two origins of variability corresponding to the two identified gene pools; (ii) the Northern group might be considered more tolerant to drought stress when considering plantlets' ability to recover water potential, though important phenotypic plasticity was found in both origins of variability; and (iii) the pattern of variation found in some physiological and morphological traits suggests that Spanish chestnut stands have great potential to respond to the expected increase in drought in the Iberian Peninsula over the present century.

show abstract

Section: Discussionsupporting

confidence: 79%

Adaptive diversity in Castanea sativa Mill. half-sib progenies in response to drought stress

Ciordia

Feito

Pereira‐Lorenzo

et al. 2012

Environmental and Experimental Botany

View full text Add to dashboard Cite

show abstract

“…In this experiment, the effects of light and temperature were not decoupled and warrant further investigation. Lobed leaves may also reduce self-shading, increase interception of horizontally projected light, or help plants cope with moisture stress (Rich et al 1995;Sisó et al 2001). Conversely, leaf lobing could be a selectively neutral trait that evolved under past climates (McGlone & Webb 1981).…”

Section: Discussionmentioning

confidence: 99%

Plastic heteroblasty in beach groundsel (Senecio lautus)

Burns¹

2005

New Zealand Journal of Botany

View full text Add to dashboard Cite

Senecio lautus (Asteraceae) is a heteroblastic herb that produces entire juvenile leaves and lobed adult leaves. Juveniles commonly grow from rock fissures where they are shaded and sheltered from high winds, whereas adult plants are exposed to high light and wind as they outgrow these refuges. Because the duration each plant is sheltered varies with the depth of rock fissures, I hypothesised that heteroblasty in S. lautus varies plastically in response to environmental conditions. I tested this hypothesis in a glasshouse experiment, which exposed developing plants to different light and wind conditions. Plants grown in windy conditions showed similar ontogenetic changes in leaf morphology to plants growing in a control treatment. However, the juvenile-adult transition was slowed in shaded conditions, indicating that heteroblasty in S. lautus varies plastically in response to light. Results were therefore consistent with the hypothesis that plastic heteroblasty is favoured in species that experience unpredictable environmental gradients during ontogeny.

show abstract

“…resistencia al flujo) de las partes aéreas de la planta, como uno de los requerimientos básicos que han garantizado la colonización de los ambientes terrestres por parte del mundo vegetal (Gil-Pelegrín 1993). Mientras que la humedad edáfica, o su equivalente energético, ha sido objeto de una extrema atención por parte de los fisiólogos vegetales (en especial por aqué-llos vinculados al universo de las plantas cultivadas) se ha prestado mucha menos atención al potencial hídrico atmosférico (Sisó et al 2001b), pudiendo ser un pará-metro que defina la transición de los paisajes típica-mente templados (sin sequía edáfica o atmosférica) a los genuínamente mediterráneos (con sequía edáfica y atmosférica). Los paisajes de transición podrían responder a situaciones donde la disponibilidad de agua en el suelo es alta pero donde se desarrollan elevados gradientes de potencial entre la hoja y el aire.…”

Section: El Continuo Suelo-planta-atmósfera Como Un Modelo Integradorunclassified

“…Los paisajes de transición podrían responder a situaciones donde la disponibilidad de agua en el suelo es alta pero donde se desarrollan elevados gradientes de potencial entre la hoja y el aire. En estas condiciones, los «derrochadores de agua», en el sentido que les da Levitt (1972), podrían ser adecuados como alternativa a los «ahorradores» estrictos (Sisó et al 2001b, Vilagrosa et al 2003b). …”

Section: El Continuo Suelo-planta-atmósfera Como Un Modelo Integradorunclassified

“…Desde una perspectiva práctica, resulta muy difícil cuantificar ambos procesos por separado, por lo que los métodos de medida de este parámetro proporcionan un valor integrado de ambos (Sisó et al 2001a. Cuando se han realizado comparaciones entre especies ha podido comprobarse que las diferencias en el valor de esta resistencia al paso del agua en fase líquida a través de la lámina foliar no son en absoluto despreciables, pudiendo explicar algunas evidencias funcionales o, incluso morfológicas (Sisó et al 2001b) (Figura 4).…”

Section: El Movimiento De Agua En La Plantaunclassified

See 1 more Smart Citation

The soil-plant-atmosphere continuous as an integrating model of forest ecophysiology

et al. 2005

View full text Add to dashboard Cite

ResumenLa gran complejidad que las plantas exhiben en su estructura y funcionamiento hace necesaria la existencia de modelos teóricos que engloben todos estos aspectos. El modelo SPAC es una buena aproximación teórica y funcional, ya que analiza el flujo de agua en la planta desde el suelo como fuente hasta la atmósfera como sumidero final, teniendo en cuenta las peculiaridades de cada parte de la estructura del vegetal y las limitaciones edáficas y atmosféricas al transporte de agua. La ruptura de este continuo en cualquiera de sus partes, por diversos motivos (regulación estomática, procesos de embolia, etc.), impide el óptimo funcionamiento de la planta, limitando las posibilidades de supervivencia de la misma.Palabras clave: spac, ecofisiología, potencial hídrico, conductividad hidráulica, embolia. Abstract The soil-plant-atmosphere continuous as an integrating model of forest ecophysiologyThe great complexity showed by plants in their structure and performance makes neccesary the development of theoretical models that include all aspects of this question. The SPAC model is a good theoretic and functional approach because it analyzes water in the plant from soil as source to atmosphere as sink, taking into account the characteristics of the structure of the plant, and the edaphic and atmospheric limitations to water transport. The breaking of this continuous in whatever place, by several causes (stomatal regulation, embolism processes, etc.), prevents the optimal performance of the plant and, therefore, limits the possibilities of survival.Key words: SPAC, ecophysiology, water potential, hydraulic conductivity, embolism. IntroducciónLa información que proporcionan las distintas técni-cas ecofisiológicas ha sido considerada una base fiable sobre la que edificar modelos de funcionamiento de los vegetales. No es de extrañar, por lo tanto, la progresiva generalización de las medidas de carácter fisiológico en la ciencia forestal, tanto para explicar procesos de decaimiento masivo del arbolado (Tyree et al. 1994) como para establecer mecanismos de mejora genética (Fernández et al. 2000) o para explorar las posibilidades del empleo de diversas especies en reforestación (Vilagrosa et al. 2003a, Vilagrosa et al. 2003b. Sin embargo, a pesar de todo lo anteriormente expuesto en cuanto al empleo de técnicas ecofisiológicas, hay que tener en cuenta algunas consideraciones básicas: (i) el funcionamiento de una planta, tanto si demuestra un excelente vigor como si presenta señales de decaimiento, es la manifestación de un complejo entramado de procesos que actúan combinadamente; (ii) no todos estos procesos son propiamente fisiológicos, estando en muchas ocasiones mediados por respuestas fenológi-cas, morfológicas o anatómicas; (iii) las variables fisiológicas que pueden obtenerse tras el estudio de una planta casi nunca integran esta complejidad, aportando tan sólo visiones parciales sobre procesos puntuales

show abstract

Relationship between hydraulic resistance and leaf morphology in broadleaf Quercus species: a new interpretation of leaf lobation

Cited by 78 publications

References 23 publications

Adaptive diversity in Castanea sativa Mill. half-sib progenies in response to drought stress

Adaptive diversity in Castanea sativa Mill. half-sib progenies in response to drought stress

Plastic heteroblasty in beach groundsel (Senecio lautus)

The soil-plant-atmosphere continuous as an integrating model of forest ecophysiology

Contact Info

Product

Resources

About