Physiological response of <i>Pinus halepensis</i> needles under ozone and water stress conditions

Manes, Fausto; Donato, E.; Vitale, Marcello

doi:10.1034/j.1399-3054.2001.1130213.x

Cited by 36 publications

(21 citation statements)

References 59 publications

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“…On the other hand, Manes et al (2001) showed a complex relationship between ozone stress and water stress using the potted P. halepensis Mill. They showed that ozone stress with water stress decreased gl but that ozone stress without water stress decreased the activity of the Calvin cycle.…”

Section: Physiological Relationshipsmentioning

confidence: 98%

Seasonal changes in needle water content and needle ABA concentration of Japanese red pine, Pinus densiflora, in declining forests on Mt. Gokurakuji, Hiroshima prefecture, Japan

et al. 2006

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To evaluate the effects of air pollution on the decline of Pinus densiflora forests, various research has been conducted around Mt. Gokurakuji (34 degrees 23'N, 132 degrees 19'E, 693 m a.s.l.) north of the Seto Inland Sea, west Japan. To investigate the mechanisms responsible for decreases in photosynthesis (Pn) and stomatal conductance (gl), delta13C of needles and seasonal changes in the water content (WC) and abscisic acid concentration (ABA) of needles were measured in various stands. The delta13C values were less negative in declining stands and younger needles. ABA and WC were not correlated with each other. WC decreased consistently with needle age while the ABA showed a minimum in August and a smaller content in older needles. Monthly precipitation and the daily maximum vapor pressure were not correlated with ABA and WC. In declining stands, WC and ABA tended to be higher and lower, respectively, than in nondeclining stands. These results suggest that the trees in declining stands received less water stress than those in nondeclining stands and the differences in gl and delta13C are not caused by the difference in water stress. The possibilities of the effects of air pollution and the infection of pine-wood nematode on the physiological decline on the pine needles are discussed.

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Section: Physiological Relationshipsmentioning

confidence: 98%

Seasonal changes in needle water content and needle ABA concentration of Japanese red pine, Pinus densiflora, in declining forests on Mt. Gokurakuji, Hiroshima prefecture, Japan

et al. 2006

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“…Though decreasing conductance is a common response to O 3 exposure, many studies demonstrate that conductance and transpiration rates can also increase after chronic O 3 exposure (Freersmith and Dobson 1989;Maiermaercker and Koch 1991;Manes et al 1998Manes et al , 2001McLaughlin et al 2007;Mills et al 2009) due to functional changes in stomata and stomatal signaling. For example, O 3 has been reported to cause stomata to respond sluggishly to stimuli, resulting in higher integrated daily transpiration rates (Paoletti 2005).…”

Section: Introductionmentioning

confidence: 96%

“…In Wittig et al (2007)'s metaanalysis of tree responses to O 3 compared to ambient background air, O 3 caused an average stomatal conductance decrease of 6% compared to an 18% decrease in photosynthesis. Several studies suggest that decreases in conductance are a secondary response to chronic O 3 exposure and only occur following a reduction in carboxylation efficiency (Farage et al 1991;Manes et al 2001;Noormets et al 2001;Paoletti and Grulke 2005;Paoletti et al 2007;Reich 1987).…”

Section: Introductionmentioning

confidence: 99%

“…Mills et al (2009) suggested that some grass species increased stomatal conductance after chronic O 3 exposure due to a decreased sensitivity of stomatal cells to abscisic acid. Additionally, stomatal cells sometimes lose functionality after O 3 exposure by altering stomatal cell ion exchange (Manes et al 2001;Torsethaugen et al 1999) and causing the collapse of epidermal cells that surround the stomatal guard cells (Hassan et al 1994), so that the stomata remain open in spite of external stimuli.…”

Section: Introductionmentioning

confidence: 99%

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Ozone exposure causes a decoupling of conductance and photosynthesis: implications for the Ball-Berry stomatal conductance model

et al. 2012

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Industrialization has significantly altered atmospheric chemistry by increasing concentrations of chemicals such as nitrogen oxides (NO( x )) and volatile organic carbon, which react in the presence of sunlight to produce tropospheric ozone (O(3)). Ozone is a powerful oxidant that causes both visual and physiological damage to plants, impairing the ability of the plant to control processes like photosynthesis and transpiration. Damage to photosynthesis and stomatal conductance does not always occur at the same rate, which generates a problem when using the Ball-Berry model to predict stomatal conductance because the calculations directly rely on photosynthesis rates. The goals of this work were to develop a modeling framework to modify Ball-Berry stomatal conductance predictions independently of photosynthesis and to test the framework using experimental data. After exposure to elevated O(3) in open-top chambers, photosynthesis and stomatal conductance in tulip poplar changed at different rates through time. We were able to accurately model observed photosynthetic and stomatal conductance responses to chronic O(3) exposure in a Ball-Berry framework by adjusting stomatal conductance in addition to photosynthesis. This led to a significant improvement in the modeled ability to predict both photosynthesis and stomatal conductance responses to O(3).

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“…Among other responses, Paoletti et al (2004), Manes et al (2001) and Nussbaum et al (2001) observed a reduction in φPo (Eqn. 7).…”

Section: Quantum Efficienciesmentioning

confidence: 99%

Use of O-J-I-P Chlorophyll Fluorescence Transients to Probe Multiple Effects of UV-C Radiation on the Photosynthetic Apparatus of Euglena

Beneragama

Balasooriya

Perera

2014

Int J Appl Sci Biotechnol

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Although the kinetic chlorophyll fluorescence signals are rich in information, most of the chlorophyll fluorescence related studies deal only with the quantum yield of primary photochemistry (Fv/Fm). JIP-test based OJIP fluorescence transient analysis is relatively a new technique to investigate the environmental stress responses of photosynthetic organisms. In the present study, the deleterious effects of ultraviolet (UV) radiation on the photosynthetic machinery were probed by the JIP-test in Euglena, one of the most potent organisms for the future space stations. The cells were exposed to a series of UV-C doses and immediately after exposure, survival percentage was determined with Neutral Red staining, and the chlorophyll fluorescence was measured using AquaPen AP-C 100 fluorometer. Resultant OJIP transients were analyzed according to JIP-test, and several functional and structural parameters were derived to explain the PSII behavior. Results indicated that the UV-C induced inhibition of electron transport is severely affected due to higher sensitivity of dark reactions after QA -, represented as ψo, the electron transfer probability, than of the light dependent reactions, represented as φPo, the trapping probability. The performance index (PIABS) of PSII, which is a combination of the indices of three independent parameters, decreased markedly in exponential manner in response to UV-C. Results illustrate the advantage of using a number of fluorescent parameters over the use of one parameter, often the Fv/Fm.

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Physiological response of Pinus halepensis needles under ozone and water stress conditions

Cited by 36 publications

References 59 publications

Seasonal changes in needle water content and needle ABA concentration of Japanese red pine, Pinus densiflora, in declining forests on Mt. Gokurakuji, Hiroshima prefecture, Japan

Seasonal changes in needle water content and needle ABA concentration of Japanese red pine, Pinus densiflora, in declining forests on Mt. Gokurakuji, Hiroshima prefecture, Japan

Ozone exposure causes a decoupling of conductance and photosynthesis: implications for the Ball-Berry stomatal conductance model

Use of O-J-I-P Chlorophyll Fluorescence Transients to Probe Multiple Effects of UV-C Radiation on the Photosynthetic Apparatus of Euglena

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