Lead deposited in the cell wall of Funaria hygrometrica protonemata is not stable – A remobilization can occur

Krzesłowska, Magdalena; Lenartowska, Marta; Samardakiewicz, Sławomir; Bilski, Henryk; Woźny, Adam

doi:10.1016/j.envpol.2009.06.035

Cited by 95 publications

(59 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Most likely, callose is used to transiently stabilize the membranes when it is necessary (Brown & Lemmon 2009). It has been suggested that callose may function as a "molecular sieve" enabling the plant (or plant cell) to regulate the intake (uptake) of minerals (including toxic metals) (Krzeslowska 2010). At the same time, it may act as a "physiological sealant" and prevent a leakage of assimilates (or other nutrients), as well as it can cause inhibition of cell-to-cell trafficking (Sjölund 1997;Chen & Kim 2009) in the stress conditions.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Study on metal-triggered callose deposition in roots of maize and soybean

et al. 2012

View full text Add to dashboard Cite

Callose plays important roles in a variety of processes of plant development, and/or in a response to a range of biotic and abiotic stresses. In the current work we have studied and compared the effect of lead, cadmium and arsenic on accumulation of newly formed callose deposits in the roots of maize and soybean. We observed formation of characteristic callose deposits in the root cell walls, probably associated with plasmodesmata, depending on the type of metal and the plant species investigated. Further, the callose turnover was analysed by measuring of total callose content as well as activities of total β-(1,3)-glucanases in roots. The latter enzymes are responsible for callose depletion, and their possible role during metal stress has previously been proposed. However, neither of these biochemical values appeared to be sufficiently reliable for scoring the altered callose turnover (including local deposits) in plant tissue. The microscopical observations are discussed in light of the biochemical data obtained.

show abstract

Section: Discussionmentioning

confidence: 99%

“…Formation of characteristic callose deposits was also observed as a general response of plants to many other metals. Exposure to excess of metals, e.g., lead, manganese, has led to variable callose deposition (Peterson & Rauser 1979;Wissemeier et al 1992;FechtChristophers et al 2002;Krzeslowska et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Study on metal-triggered callose deposition in roots of maize and soybean

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Part of the lead present in the soil solution is adsorbed onto the roots, and then becomes bound to carboxyl groups of mucilage uronic acid, or directly to the polysaccharides of the rhizoderm cell surface (Seregin and Ivanov 2001). Lead adsorption onto roots has been documented to occur in several plant species: Vigna unguiculata (Kopittke et al 2007), Festuca rubra (Ginn et al 2008), Brassica juncea (Meyers et al 2008), Lactuca sativa (Uzu et al 2009), and Funaria hygrometrica (Krzesłowska et al 2009(Krzesłowska et al , 2010. Once adsorbed onto the rhizoderm roots surface, lead may enter the roots passively and follow translocating water streams.…”

Section: Lead Uptake By Plantsmentioning

confidence: 99%

“…After penetrating into the central cylinder of the stem, lead can again be transported via the apoplastic pathway. The lead is then translocated to leaf areas via vascular flow (Sharma and Dubey 2005;Krzesłowska et al 2010). While passing through the xylem, lead can form complexes with amino or organic acids (Roelfsema and Hedrich 2005;Vadas and Ahner 2009;M a e s t r ie ta l .2010).…”

Section: Lead Accumulation In Plantsmentioning

confidence: 99%

“…Plants have developed various methods for responding to toxic metal exposures. They have internal detoxification mechanisms to deal with metal toxicity that includes selective metal uptake, excretion, complexation by specific ligands, and compartmentalization (Gupta et al 2009;Krzesłowska et al 2010;Maestri et al 2010;Sing et al 2010;Jiang and Liu 2010).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Lead Uptake, Toxicity, and Detoxification in Plants

Pourrut

Shahid

Dumat

et al. 2011

Reviews of Environmental Contamination and Toxicology

468

388

View full text Add to dashboard Cite

show abstract

Cadmium Bioavailability, Uptake, Toxicity and Detoxification in Soil-Plant System

Shahid

Dumat

Khalid

et al. 2016

Reviews of Environmental Contamination and Toxicology

225

175

View full text Add to dashboard Cite

This review summarizes the findings of the most recent studies, published from 2000 to 2016, which focus on the biogeochemical behavior of Cd in soil-plant systems and its impact on the ecosystem. For animals and people not subjected to a Cd-contaminated environment, consumption of Cd contaminated food (vegetables, cereals, pulses and legumes) is the main source of Cd exposure. As Cd does not have any known biological function, and can further cause serious deleterious effects both in plants and mammalian consumers, cycling of Cd within the soil-plant system is of high global relevance.The main source of Cd in soil is that which originates as emissions from various industrial processes. Within soil, Cd occurs in various chemical forms which differ greatly with respect to their lability and phytoavailability. Cadmium has a high phytoaccumulation index because of its low adsorption coefficient and high soil-plant mobility and thereby may enter the food chain. Plant uptake of Cd is believed to occur mainly via roots by specific and non-specific transporters of essential nutrients, as no Cd-specific transporter has yet been identified. Within plants, Cd causes phytotoxicity by decreasing nutrient uptake, inhibiting photosynthesis, plant growth and respiration, inducing lipid peroxidation and altering the antioxidant system and functioning of membranes. Plants tackle Cd toxicity via different defense strategies such as decreased Cd uptake or sequestration into vacuoles. In addition, various antioxidants combat Cd-induced overproduction of ROS. Other mechanisms involve the induction of phytochelatins, glutathione and salicylic acid.

show abstract

Lead deposited in the cell wall of Funaria hygrometrica protonemata is not stable – A remobilization can occur

Cited by 95 publications

References 52 publications

Study on metal-triggered callose deposition in roots of maize and soybean

Study on metal-triggered callose deposition in roots of maize and soybean

Lead Uptake, Toxicity, and Detoxification in Plants

Cadmium Bioavailability, Uptake, Toxicity and Detoxification in Soil-Plant System

Contact Info

Product

Resources

About