Spatial and temporal scaling of intercellular CO2 concentration in a temperate rain forest dominated by Dacrydium cupressinum in New Zealand

In north Tunisia, the Quercus suber L. forests have shown a great decline indices as well as a non-natural regeneration. The climate changes could accentuate this unappreciated situation. In this study, the effect of water deficit on physiological behavior of Quercus suber seedlings was investigated. Photosynthetic responses of 15 months old Cork oak seedlings grown for 30 days under 40% and 80% soil water water content (control) were evaluated. Results showed a negative effect of water deficit and a positive effect of the intercellular CO2 concentration increase both on photosynthesis and transpiration. Stomata conductance might play a major role in balancing gas exchanges between the leaf and its environment. Moreover, global warming could negatively affect carbon uptake of Cork oak species in northern Tunisia. Elevated CO2 leaf content will benefit Cork oak growing under water deficit by decreasing both photoysnthesis and transpiration, which will decrease either the rate or the severity of water deficits, with limited effects on metabolism. the results suggest that high intercellular CO2 concentration could increase water use efficiency among Cork oak species.

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The impact of winter flooding with saline water on foliar carbon uptake and the volatile fraction of leaves and fruits of lemon (Citrus×limon) trees

Functional Plant Biology ◽

10.1071/fp11231 ◽

2012 ◽

Vol 39 (3) ◽

pp. 199 ◽

Cited By ~ 12

Author(s):

Violeta Velikova ◽

Tommaso La Mantia ◽

Marco Lauteri ◽

Marco Michelozzi ◽

Isabel Nogues ◽

...

Keyword(s):

Saline Water ◽

Intercellular Co2 Concentration ◽

Co2 Concentration ◽

Volatile Fraction ◽

Citrus Limon ◽

Young Leaves ◽

Quality Water ◽

Winter Flooding ◽

The Impact ◽

Intercellular Co2

We investigated the consequences of recurrent winter flooding with saline water on a lemon (Citrus × limon (L.) Burm.f.) orchard, focussing on photosynthesis limitations and emission of secondary metabolites (isoprenoids) from leaves and fruits. Measurements were carried out immediately after flooding (December), at the end of winter (April) and after a dry summer in which plants were irrigated with optimal quality water (September). Photosynthesis was negatively affected by flooding. The effect was still visible at the end of winter, whereas the photosynthetic rate was fully recovered after summer, indicating an unexpected resilience capacity of flooded plants. Photosynthesis inhibition by flooding was not due to diffusive limitations to CO2 entry into the leaf, as indicated by measurements of stomatal conductance and intercellular CO2 concentration. Biochemical and photochemical limitations seemed to play a more important role in limiting the photosynthesis of flooded plants. In young leaves, characterised by high rates of mitochondrial respiration, respiratory rates were enhanced by flooding. Flooding transiently caused large and rapid emission of several volatile isoprenoids. Emission of limonene, the most abundant compound, was stimulated in the leaves, and in young and mature fruits. Flooding changed the blend of emitted isoprenoids, but only few changes were observed in the stored isoprenoids pool.

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Distribution, abundance and biomass of epiphyte-lianoid communities in a New Zealand lowland Nothofagus-podocarp temperate rain forest: tropical comparisons

Journal of Biogeography ◽

10.1046/j.1365-2699.2001.00613.x ◽

2002 ◽

Vol 28 (8) ◽

pp. 1033-1049 ◽

Cited By ~ 36

Author(s):

Robert G. M. Hofstede ◽

Katharine J. M. Dickinson ◽

Alan F. Mark

Keyword(s):

New Zealand ◽

Rain Forest ◽

Temperate Rain Forest

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Effects of lead on growth, osmotic adjustment, antioxidant activity and photosynthetic responses in Phoebe chekiangensis seedlings

Notulae Botanicae Horti Agrobotanici Cluj-Napoca ◽

10.15835/nbha48311933 ◽

2020 ◽

Vol 48 (3) ◽

pp. 1637-1648

Author(s):

Yujie YANG ◽

Wenjie LI ◽

Xinru HE ◽

Die HU ◽

Yongjun FEI

Keyword(s):

Intercellular Co2 Concentration ◽

Co2 Concentration ◽

Root Surface ◽

Root Surface Area ◽

Photosynthetic Parameters ◽

Root Volume ◽

Root Shoot Ratio ◽

Mda Content ◽

Photosynthetic Responses ◽

Intercellular Co2

Experiments were conducted on 1-year Phoebe chekiangensis seedlings treated by different concentration (0, 300, 600, 900, 1200 mg/L) of Pb (NO3)2. Sixty days later, determination was implemented on seedling growth, physiological and photosynthetic parameters. The results showed that the lower concentration treated could promote the growth of the seedlings. But with the increase of concentration of lead, P. chekiangensis seedling height increment, ground diameter growth, whole biomass, total root surface area, root volume, total root length and root activity decreased, while root-shoot ratio present a rising trend. With the increase of concentration of Pb(NO3)2 solution, the membrane permeability and MDA content of P. chekiangensis seedlings showed a trend of rise after the first reduce; the protein content and chlorophyll content presented a trend of decrease after the first increase; while the POD, SOD and CAT activity increased firstly but decreased afterwards; the net photosynthetic rate, stomatal conductance, intercellular CO2 concentration, transpiration rate were all increase at first then decrease, which indicated that protection enzyme activity and membrane was damaged thus the growth of P. chekiangensis seedlings was inhibited.

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The significance of cuticular transpiration for the calculation of intercellular CO2 concentration

Biologia Plantarum ◽

10.1007/bf02880430 ◽

1984 ◽

Vol 26 (1) ◽

pp. 74-76 ◽

Cited By ~ 5

Author(s):

R. Hak ◽

L. Nate

Keyword(s):

Intercellular Co2 Concentration ◽

Co2 Concentration ◽

Cuticular Transpiration ◽

Intercellular Co2

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Crassulacean acid metabolism (CAM) in Kalancho�: Changes in intercellular CO2 concentration during a normal CAM cycle and during cycles in continuous light or darkness

Planta ◽

10.1007/bf00384990 ◽

1981 ◽

Vol 152 (1) ◽

pp. 87-92 ◽

Cited By ~ 37

Author(s):

M. Kluge ◽

Ch. B�hlke ◽

O. Queiroz

Keyword(s):

Crassulacean Acid Metabolism ◽

Acid Metabolism ◽

Intercellular Co2 Concentration ◽

Continuous Light ◽

Co2 Concentration ◽

Intercellular Co2

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Intercellular CO2 concentration and water-use efficiency of temperate plants with different life-forms and from different microhabitats

Oecologia ◽

10.1007/bf01036741 ◽

1986 ◽

Vol 68 (3) ◽

pp. 370-374 ◽

Cited By ~ 48

Author(s):

F. Yoshie

Keyword(s):

Water Use Efficiency ◽

Water Use ◽

Intercellular Co2 Concentration ◽

Co2 Concentration ◽

Life Forms ◽

Use Efficiency ◽

Intercellular Co2

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Transpiration, Intracellular Carbon Dioxide Concentration and Carbon-Isotope Discrimination of 24 Wild Species Differing in Relative Growth Rate

Functional Plant Biology ◽

10.1071/pp9940507 ◽

1994 ◽

Vol 21 (4) ◽

pp. 507 ◽

Cited By ~ 26

Author(s):

H Poorter ◽

GD Farquhar

Keyword(s):

Growth Rate ◽

Relative Growth Rate ◽

Carbon Isotope Discrimination ◽

Growth Parameters ◽

Intercellular Co2 Concentration ◽

Co2 Concentration ◽

Root Weight ◽

Relative Growth ◽

Unit Leaf ◽

Intercellular Co2

Various aspects of the water economy were investigated for a range of herbaceous species varying in relative growth rate. Plants were grown in a growth chamber with a non-limiting supply of water and nutrients, and the rate of transpiration, short-term intercellular CO2 concentration and long-term carbon isotope discrimination (Δ) in the leaves were determined. No correlation was found between the relative growth rate of these species, and the transpiration rate per unit leaf area, the intercellular CO2 concentration and the 13C-discrimination. There was a positive correlation, however, with the rate of water uptake per unit root weight. From these observations we infer that the previously observed differences in photosynthetic nitrogen-use efficiency, the rate of photosynthesis per unit leaf nitrogen, can not be explained by variation in intercellular CO2 concentration. These data were also used to analyse correlations between Δ and both growth parameters and chemical composition. Apart from parameters related to the water economy, Δ only correlated (positively) with the fractional biomass allocation to the roots (root weight ratio) and the specific root length (root length divided by root weight), and not with any other investigated growth parameters.

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RELATIONSHIPS AND DIVERGENCE PATTERNS IN HYPOPTERYGIUM ‘ROTULATUM’ S.L. (HYPOPTERYGIACEAE, BRYOPSIDA) INFERRED FROM trnL INTRON SEQUENCES. STUDIES IN AUSTRAL TEMPERATE RAIN FOREST BRYOPHYTES 7

Edinburgh Journal of Botany ◽

10.1017/s0960428600000226 ◽

2000 ◽

Vol 57 (2) ◽

pp. 291-307 ◽

Cited By ~ 10

Author(s):

T. PFEIFFER

Keyword(s):

New Zealand ◽

Rain Forest ◽

Latitudinal Gradient ◽

Distribution Patterns ◽

Distinct Species ◽

Global Scale ◽

Trnl Intron ◽

Temperate Rain Forest ◽

Morphological Species ◽

Relationship Of

The phylogenetic relationship of species within the Hypopterygium ‘rotulatum’ (Hedw.) Brid. s.l. complex is analysed by sequencing the trnL intron of cp DNA. Furthermore, the divergence in variable New Zealand H. ‘rotulatum’ samples is investigated along a latitudinal gradient. The presented data strongly support the delimitation of at least two distinct species within Hypopterygium ‘rotulatum’ s.l. in New Zealand, Australia and Tasmania, which correspond with the morphological species H. muelleri Hampe (possibly conspecific with H. debile Reichardt) and H. didictyon Müll. Hal., a species known from Chile. The distribution patterns of these species are discussed on a regional (New Zealand) and global scale; indicating an australasian distribution pattern of H. muelleri and a palaeoaustral pattern of H. didictyon.

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