Phosphatidylcholine-induced reactivation of photosystem II membranes pretreated with Triton X-100

Ruan, Xiang; Li, Donghai; Xu, Qiang; Mao, Haibin; Li, Guofu; Gong, Yu; Kuang, Tingyun; Zhao, Nanming

doi:10.1016/s1011-1344(02)00235-x

Cited by 8 publications

(2 citation statements)

References 34 publications

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“…Table 3. surfactant concentrations have been shown to compromise the biophysical integrity of PSII membranes and to modify the kinetics of chlorophyll fluorescence (Ruan et al 2002). Thus, EcoS treatment could potentially impact chlorophyll fluorescence, assuming some absorption of the product by the roots of plants growing in EcoS-treated substrate.…”

Section: Chlorophyll Fluorescencementioning

confidence: 99%

Humectants as Post-plant Soil Amendments: Effects on Growth and Physiological Activity of Drought-stressed, Container-grown Tree Seedlings

Roberts¹,

Linder²,

Krause³

et al. 2012

AUF

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One-year-old seedlings of red maple (Acer rubrum L.) and yellow poplar (Liriodendron tulipifera L.) were treated with Hydretain ES™(HydES) or EcoSential™(EcoS) applied as a soil drench. A progressive drought cycle was imposed after treatment, and as each seedling wilted, the leaves and roots were harvested. Foliar growth was unaffected by HydES or EcoS, but root growth (roots < 1 mm diameter) was significantly less for seedlings grown in the humectant-treated media. These data, along with measurements of substrate moisture content taken during a similar dry down period, suggest that drought-induced fine root growth in humectant-treated media was slower because there was less need for these roots to extend and proliferate in search of additional soil moisture supplies. In studies conducted the following year, HydES or EcoS were applied as a soil drench to one-year-old seedlings of red maple and river birch (Betula nigra L.) prior to withholding irrigation. In these studies, measurements of chlorophyll fluorescence, leaf gas exchange, and xylem water potential indicate that physiological activity was greater for drought-stressed seedlings grown in HydES-treated media compared to similar seedlings grown in EcoS-treated media, a condition attributed to lower levels of plant-water stress (higher xylem water potentials) in the HydES-treated seedlings.

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Section: Chlorophyll Fluorescencementioning

confidence: 99%

Humectants as Post-plant Soil Amendments: Effects on Growth and Physiological Activity of Drought-stressed, Container-grown Tree Seedlings

Roberts¹,

Linder²,

Krause³

et al. 2012

AUF

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“…The spectra resulted from the overlapping of the DCIP absorption band visible in the range 550-650 nm and the typical thylakoid spectrum (Fig. 1A), having the main peaks at about 675 and 436 nm due to chlorophyll a and shoulders in the range 450-550 nm attributable to carotenoids [40][41][42][43]. Although a slight photobleaching effect is produced by light stress on the inner pigments, observable as decrements in the chlorophyll 675 and 436 nm peaks, this does not influence the range 550-650 nm, where DCIP absorbs light radiation; therefore, for these systems, in the range 550-650 nm, the most important light effect is the DCIP reduction by the photosynthetic samples, visible as decrement of its absorption band intensity.…”

Section: Hill Reaction Assaysmentioning

confidence: 99%

Interactions between heavy metals and photosynthetic materials studied by optical techniques

Ventrella

Catucci

Piletska

et al. 2009

Bioelectrochemistry

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In this work studies on rapid inhibitory interactions between heavy metals and photosynthetic materials at different organization levels were carried out by optical assay techniques, investigating the possibility of applications in the heavy metal detection field. Spinach chloroplasts, thylakoids and Photosystem II proteins were employed as biotools in combination with colorimetric assays based on dichlorophenol indophenole (DCIP) photoreduction and on fluorescence emission techniques. It was found that copper and mercury demonstrated a strong and rapid photosynthetic activity inhibition, that varied from proteins to membranes, while other metals like nickel, cobalt and manganese produced only slight inhibition effects on all tested photosynthetic materials. By emission measurements, only copper was found to rapidly influence the photosynthetic material signals. These findings give interesting information about the rapid effects of heavy metals on isolated photosynthetic samples, and are in addition to the literature data concerning the effects of growth in heavy metal enriched media.

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Protection of phosphatidylcholine to photosystem II membrane during heat treatment

Gong

et al. 2003

Sci. Bull.

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Phosphatidylcholine-induced reactivation of photosystem II membranes pretreated with Triton X-100

Cited by 8 publications

References 34 publications

Humectants as Post-plant Soil Amendments: Effects on Growth and Physiological Activity of Drought-stressed, Container-grown Tree Seedlings

Humectants as Post-plant Soil Amendments: Effects on Growth and Physiological Activity of Drought-stressed, Container-grown Tree Seedlings

Interactions between heavy metals and photosynthetic materials studied by optical techniques

Protection of phosphatidylcholine to photosystem II membrane during heat treatment

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