Trace elements present in airborne particulate matter—Stressors of plant metabolism

Pavlı́k, Milan; Pavlı́ková, Daniela; Zemanová, Veronika; Hnilička, František; Urbanová, Veronika; Száková, Jiřina

doi:10.1016/j.ecoenv.2011.12.009

Cited by 70 publications

(43 citation statements)

References 36 publications

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“…Samples were analyzed for AA contents by the gas chromatography coupled with mass spectrometry detection using a HP 6890N/5975 instrument (Agilent Technologies, Torrance, USA; as described by Pavlík et al (2012)). …”

Section: Methodsmentioning

confidence: 99%

The changes of contents of selected free amino acids associated with cadmium stress in Noccaea caerulescens and Arabidopsis halleri

Zemanová¹,

Pavlı́k²,

Pavlı́ková³

et al. 2013

Plant Soil Environ.

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Changes of free amino acid (AA) contents (glutamic acid, glutamine, aspartic acid, asparagines, proline, hydroxyproline) in Noccaea caerulescens and Arabidopsis halleri under cadmium soil contamination (Cd1 = 30, Cd2 = 60, Cd3 = 90 mg/kg soil) are reported. Results of the pot experiment confirmed different effect of Cd on N. caerulescens in contrast to A. halleri and the higher stress adaptation of A. halleri. Total free AA contents in both plant species were not significantly modified by Cd contamination. The glutamic acid and glutamate contents in plant biomass were decreased under Cd2 and Cd3 stress. The declines of contents of both AA can be caused by intensive syntheses of plant defense elicitors, but declines in A. halleri were significantly lower in contrast to N. caerulescens. The content of aspartic acid was increased in N. caerulescens under Cd stress, but in A. halleri its changes were not observed. The different pathways of nitrogen utilization of tested plants were confirmed: the major AA forms used for nitrogen transport are glutamate for N. caerulescens and asparagine for A. halleri. The increase of proline content was determined only in N. caerulescens growing under Cd stress in the beginning of growing period.

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Section: Methodsmentioning

confidence: 99%

The changes of contents of selected free amino acids associated with cadmium stress in Noccaea caerulescens and Arabidopsis halleri

Zemanová¹,

Pavlı́k²,

Pavlı́ková³

et al. 2013

Plant Soil Environ.

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“…Glu is regulated by the feedback of Pro (Pavlíková et al 2007). Its intermediate product glutamate-5-semaldehyde leads to chlorophyll biosynthesis via 5-aminolevulinate (Pavlík et al 2012). Glu is a substrate not only for chlorophyll biosynthesis, but also for antioxidative and stress metabolites (glutathione and phytochelatins), and therefore the chlorophyll content and its degradation are associated with senescence (MeneguelliSouza et al 2016).…”

Section: Resultsmentioning

confidence: 99%

“…The contents of free AAs were determined by GC-MS (Hewlett Packard 6890N/5975 MSD, Agilent Technologies, Torrance, USA) according to Pavlík et al (2012) after their derivatization in extracts (1.0 g of fresh biomass, 15 mL of methanol and double distilled H 2 O (7:3, v/v), 24 h) by EZ:faast set (Phenomenex, Santa Clara, USA).…”

Section: Methodsmentioning

confidence: 99%

The contents of free amino acids and elements in As-hyperaccumulator Pteris cretica and non-hyperaccumulator Pteris straminea during reversible senescence

Pavlı́ková¹,

Zemanová²,

Pavlı́k³

2017

PLANT SOIL ENVIRON

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Several species of the genus Pteris including P. vittata and P. cretica (PC) have been identified as arsenic hyperaccumulators (Luongo and Ma 2005). On the other hand, Meharg (2003) first reported P. straminea (PS) as a non-hyperaccumulator plant. The phytochelatins play a key role in As (arsenic) detoxification in non-hyperaccumulators (Raab et al. 2004). In contrast to non-hyperaccumulators, hyperaccumulators complex only 1-3% As with phytochelatins (Zhao et al. 2003, Vetterlein et al. 2009), because As detoxification is associated with the conversion of As V to As III and As methylation (Gonzaga et al. 2006). The low As content in Pteris hyperaccumulators promotes plant growth; a high content inhibits growth (Cao et al. 2004). This finding confirms that As induces a hormetic response in these plants. A high level of detoxified As leads to its re-oxidation and to demethylation and As becomes toxic after degradation of complexes that substituted As III/V species with CH 3 in cells (Tu et al. 2003 The objectives of this study were to analyse the relationship between the contents of elements and free amino acids (AAs) in fronds of As-hyperaccumulator Pteris cretica cv. Albo-lineata (PC) and non-hyperaccumulator Pteris straminea (PS) during reversible senescence. The time-course effect on senescence was also investigated. The two ferns were grown in a pot experiment with soil containing 16 mg As total /kg soil for 160 days. The contents of elements and AAs in both ferns and in individual sampling periods differed. The highest accumulation of elements and AAs was measured in PS fronds after 83 days; however, the accumulation of As, Ca, Cu, Fe, Mg, P and asparagin in PC fronds was highest after 160 days. The results of principal component analysis showed more rapid senescence of PS compared to PC. This was caused by changes in the relationship between the contents of elements (cofactors of metalloenzymes, stress metabolites) and AAs (transport of NH 2 group and stress metabolites). The hyperaccumulator plant (PC) was more resistant than the bioindicator plant (PS) to the conversion from reversible to irreversible senescence.

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“…Adequate external K 2 CO 3 application effectively improved salt adaptation ability. Plants respond to environmental conditions by characteristic changes in gas exchange parameters (Pavlík et al 2012, Pavlíková et al 2014, which are closely linked to oxidative stress, induction of senescence and stress metabolism. Stomatal limitation is often considered as an early physiological response to stress condition, which results in decreasing P n through limiting CO 2 availability in the mesophyll (Cornic 2000).…”

Section: Resultsmentioning

confidence: 99%

Adequate potassium application enhances salt tolerance of moderate-halophyte Sophora alopecuroides

Wei¹,

Cheng²,

Liu³

et al. 2015

PLANT SOIL ENVIRON

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Trace elements present in airborne particulate matter—Stressors of plant metabolism

Cited by 70 publications

References 36 publications

The changes of contents of selected free amino acids associated with cadmium stress in Noccaea caerulescens and Arabidopsis halleri

The changes of contents of selected free amino acids associated with cadmium stress in Noccaea caerulescens and Arabidopsis halleri

The contents of free amino acids and elements in As-hyperaccumulator Pteris cretica and non-hyperaccumulator Pteris straminea during reversible senescence

Adequate potassium application enhances salt tolerance of moderate-halophyte Sophora alopecuroides

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