Physiological and isotopic (delta(13)C and delta(18)O) responses of three tropical tree species to water and nutrient availability

Lucas Cernusak, K WINTER, B TURNER

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    Water-use efficiency and stable isotope composition were studied in three tropical tree species. Seedlings of Tectona grandis, Swietenia macrophylla and Platymiscium pinnatum were grown at either high or low water supply, and with or without added fertilizer. These three species previously exhibited low, intermediate and high whole-plant water-use efficiency (TE) when grown at high water supply in unfertilized soil. Responses of TE to water and nutrient availability varied among species. The TE was calculated as experiment-long dry matter production divided by cumulative water use. Species-specific offsets were observed in relationships between TE and whole-plant 13C discrimination (?13Cp). These offsets could be attributed to a breakdown in the relationship between ?13C p and the ratio of intercellular to ambient CO2 partial pressures (ci/ca) in P. pinnatum, and to variation among species in the leaf-to-air vapour pressure difference (v). Thus, a plot of v�TE against ci/ca showed a general relationship among species. Relationships between ?18O of stem dry matter and stomatal conductance ranged from strongly negative for S. macrophylla to no relationship for T. grandis. Results suggest inter-specific variation among tropical tree species in relationships between stable isotope ratios (?13C and ?18O) and the gas exchange processes thought to affect them. � 2009 Blackwell Publishing Ltd.
    Original languageEnglish
    Pages (from-to)1441-1455
    Number of pages15
    JournalPlant, Cell and Environment
    Volume32
    Issue number10
    Publication statusPublished - 2009

    Fingerprint

    Platymiscium pinnatum
    Swietenia macrophylla
    Tectona grandis
    nutrient availability
    water supply
    water use efficiency
    stable isotopes
    Food
    Water
    Water Supply
    vapor pressure
    interspecific variation
    Isotopes
    dry matter accumulation
    gas exchange
    stomatal conductance
    water
    carbon dioxide
    Meliaceae
    fertilizers

    Cite this

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    title = "Physiological and isotopic (delta(13)C and delta(18)O) responses of three tropical tree species to water and nutrient availability",
    abstract = "Water-use efficiency and stable isotope composition were studied in three tropical tree species. Seedlings of Tectona grandis, Swietenia macrophylla and Platymiscium pinnatum were grown at either high or low water supply, and with or without added fertilizer. These three species previously exhibited low, intermediate and high whole-plant water-use efficiency (TE) when grown at high water supply in unfertilized soil. Responses of TE to water and nutrient availability varied among species. The TE was calculated as experiment-long dry matter production divided by cumulative water use. Species-specific offsets were observed in relationships between TE and whole-plant 13C discrimination (?13Cp). These offsets could be attributed to a breakdown in the relationship between ?13C p and the ratio of intercellular to ambient CO2 partial pressures (ci/ca) in P. pinnatum, and to variation among species in the leaf-to-air vapour pressure difference (v). Thus, a plot of v�TE against ci/ca showed a general relationship among species. Relationships between ?18O of stem dry matter and stomatal conductance ranged from strongly negative for S. macrophylla to no relationship for T. grandis. Results suggest inter-specific variation among tropical tree species in relationships between stable isotope ratios (?13C and ?18O) and the gas exchange processes thought to affect them. � 2009 Blackwell Publishing Ltd.",
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    author = "Lucas Cernusak and K WINTER and B TURNER",
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    language = "English",
    volume = "32",
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    Physiological and isotopic (delta(13)C and delta(18)O) responses of three tropical tree species to water and nutrient availability. / Cernusak, Lucas; WINTER, K; TURNER, B.

    In: Plant, Cell and Environment, Vol. 32, No. 10, 2009, p. 1441-1455.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Physiological and isotopic (delta(13)C and delta(18)O) responses of three tropical tree species to water and nutrient availability

    AU - Cernusak, Lucas

    AU - WINTER, K

    AU - TURNER, B

    PY - 2009

    Y1 - 2009

    N2 - Water-use efficiency and stable isotope composition were studied in three tropical tree species. Seedlings of Tectona grandis, Swietenia macrophylla and Platymiscium pinnatum were grown at either high or low water supply, and with or without added fertilizer. These three species previously exhibited low, intermediate and high whole-plant water-use efficiency (TE) when grown at high water supply in unfertilized soil. Responses of TE to water and nutrient availability varied among species. The TE was calculated as experiment-long dry matter production divided by cumulative water use. Species-specific offsets were observed in relationships between TE and whole-plant 13C discrimination (?13Cp). These offsets could be attributed to a breakdown in the relationship between ?13C p and the ratio of intercellular to ambient CO2 partial pressures (ci/ca) in P. pinnatum, and to variation among species in the leaf-to-air vapour pressure difference (v). Thus, a plot of v�TE against ci/ca showed a general relationship among species. Relationships between ?18O of stem dry matter and stomatal conductance ranged from strongly negative for S. macrophylla to no relationship for T. grandis. Results suggest inter-specific variation among tropical tree species in relationships between stable isotope ratios (?13C and ?18O) and the gas exchange processes thought to affect them. � 2009 Blackwell Publishing Ltd.

    AB - Water-use efficiency and stable isotope composition were studied in three tropical tree species. Seedlings of Tectona grandis, Swietenia macrophylla and Platymiscium pinnatum were grown at either high or low water supply, and with or without added fertilizer. These three species previously exhibited low, intermediate and high whole-plant water-use efficiency (TE) when grown at high water supply in unfertilized soil. Responses of TE to water and nutrient availability varied among species. The TE was calculated as experiment-long dry matter production divided by cumulative water use. Species-specific offsets were observed in relationships between TE and whole-plant 13C discrimination (?13Cp). These offsets could be attributed to a breakdown in the relationship between ?13C p and the ratio of intercellular to ambient CO2 partial pressures (ci/ca) in P. pinnatum, and to variation among species in the leaf-to-air vapour pressure difference (v). Thus, a plot of v�TE against ci/ca showed a general relationship among species. Relationships between ?18O of stem dry matter and stomatal conductance ranged from strongly negative for S. macrophylla to no relationship for T. grandis. Results suggest inter-specific variation among tropical tree species in relationships between stable isotope ratios (?13C and ?18O) and the gas exchange processes thought to affect them. � 2009 Blackwell Publishing Ltd.

    KW - carbon

    KW - carbon dioxide

    KW - oxygen

    KW - water

    KW - carbon isotope

    KW - gas exchange

    KW - interspecific competition

    KW - nutrient availability

    KW - oxygen isotope

    KW - physiological response

    KW - seedling

    KW - soil fertility

    KW - species richness

    KW - stable isotope

    KW - transpiration

    KW - tree

    KW - tropical region

    KW - water availability

    KW - water supply

    KW - water use

    KW - water use efficiency

    KW - article

    KW - evapotranspiration

    KW - legume

    KW - Meliaceae

    KW - metabolism

    KW - photosynthesis

    KW - physiology

    KW - plant leaf

    KW - plant stoma

    KW - soil

    KW - species difference

    KW - tropic climate

    KW - vapor pressure

    KW - Verbenaceae

    KW - Carbon

    KW - Carbon Dioxide

    KW - Carbon Isotopes

    KW - Fabaceae

    KW - Oxygen

    KW - Oxygen Isotopes

    KW - Photosynthesis

    KW - Plant Leaves

    KW - Plant Stomata

    KW - Plant Transpiration

    KW - Seedling

    KW - Soil

    KW - Species Specificity

    KW - Trees

    KW - Tropical Climate

    KW - Vapor Pressure

    KW - Water

    KW - Platymiscium pinnatum

    KW - Swietenia macrophylla

    KW - Tectona grandis

    M3 - Article

    VL - 32

    SP - 1441

    EP - 1455

    JO - Plant, Cell and Environment

    JF - Plant, Cell and Environment

    SN - 0140-7791

    IS - 10

    ER -