Foliar Penetration and Accumulation of Organic Chemicals in Plant Cuticles

Schönherr, Jörg; Riederer, Markus

doi:10.1007/978-1-4613-8850-0_1

Cited by 286 publications

(175 citation statements)

References 69 publications

Supporting

Mentioning

169

Contrasting

Unclassified

Order By: Relevance

“…In contrast, the water permeability observed for the latter waxes is approximately 10 times lower than the controls (wax free paper discs). According to Schönherr and Riederer (1989) removal of the epicuticular waxes leads to an increase in water permeability of 10 to 10.000 times.…”

Section: Resultsmentioning

confidence: 99%

“…The efficiency of cuticles to restrain water permeability has been evaluated either with intact leaves (Hall and Jones 1961), reconstituted waxes (Grncarevic and Radler 1967), isolated cuticles (Schönherr and Riederer 1989) or foliar discs (Hoad et al 1996). Experimental devices in such studies enable the evaluation of the influence on water permeability of various factors, such as thickness of waxy films, wax architecture and chemical composition.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Epicuticular waxes from caatinga and cerrado species and their efficiency against water loss

Oliveira

Meirelles

Salatino

2003

An. Acad. Bras. Ciênc.

103

View full text Add to dashboard Cite

The effects of the contents and chemical composition of the foliar epicuticular waxes of species from the caatinga (Aspidosperma pyrifolium, Capparis yco, Maytenus rigida and Ziziphus joazeiro) and cerrado (Aristolochia esperanzae, Didymopanax vinosum, Strychnos pseudoquina and Tocoyena formosa) were evaluated as to the resistance to water loss by means of an experimental device constructed for this purpose. In general, the waxes of the caatinga species investigated were more efficient against water loss than cerrado species. Increase of the thickness of the waxy deposits from 40 to 90µ g.cm −2 had no significant effect on the resistance to water loss. The chemistry of the wax constituents was shown to be an important factor to determine the degree of resistance to evaporation. n-Alkanes and alcoholic triterpenes were the most efficient barriers, while hentriacontan-16-one (a ketone) and ursolic acid (an acid triterpene) revealed low efficiency. The higher efficiency of the waxes of the leaves from caatinga species (mainly those of C. yco and Z. joazeiro) is probably accounted for the predominance of n-alkanes in their composition. The lower efficiency of the waxes of A. pyrifolium (caatinga), T. formosa and A. esperanzae (both species from the cerrado) is probably a consequence of the predominance of triterpenoids in the waxes of the two former species and hentriacontan-16-one in the latter.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Epicuticular waxes from caatinga and cerrado species and their efficiency against water loss

Oliveira

Meirelles

Salatino

2003

An. Acad. Bras. Ciênc.

103

View full text Add to dashboard Cite

show abstract

“…Radiochemical purity higher than 98 "o was determined by radio-TLC. PCP is a weak phenolic acid (pK, = 4-75) and the pH of the external donor solutions was adjusted to 3-0 (citric buffer/KOH) since only the nonionized form of the molecule can permeate the plant cuticle in substantial amounts (Schonherr & Riederer, 1989). At this pH 98% of the PCP molecules are in the protonated form.…”

Section: Chemicals and Analytical Methodsmentioning

confidence: 99%

Comparative investigations of cuticular permeability of conifer needles from healthy and damaged trees

Schreiber

1994

New Phytologist

View full text Add to dashboard Cite

Using pentachlorophenol (PCP) and conifer needles, rates of cutitular PCP uptake and effective leaf surface areas were measured, and PCP permeances of the cuticular membranes were calculated. Needles from healthy and damaged conifer trees of the species Picea abies (L.) Karst., Pinus sylvetris L. and Abies alba Mill, were investigated. Significant differences of the rates of cuticular uptake, effective leaf surface areas and permeances of the cuticular membranes between healthy and damaged trees were not evident. Thus, it must be concluded tbat damaged cuticular tran.sport barriers of tht needles cannot have contributed to the damage symptoms obseried with the trees investigated in tbis study. However, it was found that increasingly older spruce needles bad significantly higher permeances, indicating a decrease of cuticular barrier properties with needle age. Additionally, due to larger effective leaf surfaces spruce needles of higher altitudes (1100 m above sea level) possessed bigher rates of cuticular transport compared to needles from lower altitudes (400 m above sea-level). Therefore, these findings might help to understand why older needles and trees growing in bigber geographical sites are more sensitive to detrimental en\ ironmentaf influences causing symptoms of novel forest decline.

show abstract

“…Given its location and its fundamental protective role, it is with the epicuticular wax, the initial and main barrier to penetration of xenobiotics deposited on the aerial parts of plants. The cuticular permeability to water, nutrients, pollutants and pesticides has already been investigated (Price, 1982;Chamel, 1986;Schonherr & Riederer, 1989;Bukovac et al, 1990;Chamel, Pined & Escoubes, 1991;Chaumat et al, 1992) using isolated cuticles of various leaves and fruit.…”

Section: Introductionmentioning

confidence: 99%

Ultrastructure and chemical composition of some isolated plant cuticles in relation to their permeability to the herbicide, diuron

1993

View full text Add to dashboard Cite

SUMMARYThe ultrastructure of leaf and fruit cuticles from nine species was investigated before and after their enzymatic isolation. No major alteration was observed in the internal ultrastructure of cuticles after the isolation process. The isolated cuticle preparations showed several levels of complexity from the Pyrus communis L. leaf cuticle represented by a simple layer, to the Vanilla planifolia Andr. leaf cuticle preparation having extensive cell walls on its inner face. Two main ultrastructural types were distinguished; cuticles characterized by an almost entirely reticulate structure and cuticles characterized by an outer lamellate region with an inner reticulate region. The permeability of isolated cuticles to diuron was measured with a double water compartment device using '*Cdiuron. The permeability coefficient (P) ranged from 1-9 to 40-1 nm s ' for seven species. The mean value of P for cuticles having an entirely reticulate structure was higher than that for cuticles with an outer lamellate zone. Moreover, for each of the two ultrastructural types, the permeability decreased with an increase in soluble wax content expressed per surface unit.

show abstract

Foliar Penetration and Accumulation of Organic Chemicals in Plant Cuticles

Cited by 286 publications

References 69 publications

Epicuticular waxes from caatinga and cerrado species and their efficiency against water loss

Epicuticular waxes from caatinga and cerrado species and their efficiency against water loss

Comparative investigations of cuticular permeability of conifer needles from healthy and damaged trees

Ultrastructure and chemical composition of some isolated plant cuticles in relation to their permeability to the herbicide, diuron

Contact Info

Product

Resources

About