Environmental influences on cuticle development and resultant foliar penetration

Hull, Herbert M.; Morton, Howard L.; Wharrie, J. R.

doi:10.1007/bf02860832

Cited by 174 publications

(100 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The fact that sun leaf CMs were found to be thicker than those of shade leaves at the ultrastructural level in Q. velutina contradicts the findings of HULL et a l. (1975) and REED and TUKEY (1 982). Their studies examined the correlative environ mental effects of both light intensity and temper ature on experimentally grown plants.…”

Section: Discussionmentioning

confidence: 75%

Morphological and Ultrastructural Studies of Plant Cuticular Membranes. I. Sun and Shade Leaves of Quercus velutina (Fagaceae)

Osborn¹,

Taylor²

1990

Botanical Gazette

View full text Add to dashboard Cite

Sun and shade leaves of Quercus velutina Lam. were evaluated with respect to differences in gross anat omy, morphology, and cuticle (cuticular membrane (CM|) ultrastructure and micromorphology. Sun leaves are smaller, with more deeply lobed margins, and have more stomata, thicker mesophylls, and thicker CMs when compared with shade leaves. Cuticular membranes are thicker on both the adaxial and abaxial surfaces of sun leaves as a result of deposition of more cuticular components and scaly epicuticular wax. Both the adaxial and abaxial epidermises have the same basic fine structure in sun and shade leaves with respect to the outer periclinal cell wall and overlying CM. The cell wall is lamellate and the CM is composed of a two-zoned, reticulate cuticular layer and an amorphous cuticle proper. The outer periclinal wall and asso ciated CM of the adaxial epidermis is thicker than that of the abaxial epidermis with both epidermal layers thicker in sun leaves compared with shade leaves. Difference in thickness of both epidermal layers, between sun and shade leaves, can be attributed to an increase in the inner reticulate region of the CM of sun leaves. Cells of the abaxial epidermis have ultrastructurally different CMs. Nonstomatal epidermal cells have a distinct amorphous cuticle proper whereas subsidiary cells have reticulations that traverse most of the outer CM. Guard cells have radially aligned reticulations through the entire outer CM and, therefore, lack an amorphous cuticle proper. Moreover, an internal CM, which is only sparsely reticulate, lines substomatal chambers. The internal CM of sun leaves is thicker and extends considerably deeper into substomatal chambers.

show abstract

Section: Discussionmentioning

confidence: 75%

Morphological and Ultrastructural Studies of Plant Cuticular Membranes. I. Sun and Shade Leaves of Quercus velutina (Fagaceae)

Osborn¹,

Taylor²

1990

Botanical Gazette

View full text Add to dashboard Cite

show abstract

“…Among the factors studied, sunlight (X), median temperature (Z) and relative humidity (W) correlated with nonacosane (y = 101.110 + 3.644X -0.905Z -1.185W, R 2 = 0.99, P<0.0001). The leaf nonacosane in kale, a principal component of wax in the Brassicaceae (Eigenbrode & Pillai, 1998), has been related to plant adoption to hydric stress (Hull et al, 1975).…”

Section: Resultsmentioning

confidence: 99%

Bemisia tabaci, Brevicoryne brassicae and Thrips tabaci abundance on Brassica oleracea var. acephala

Leite

Picanço

Jham

et al. 2005

Pesq. agropec. bras.

View full text Add to dashboard Cite

Bemisia tabaci, Brevicoryne brassicae and Thrips tabaci on Brassica oleracea 197Bemisia tabaci, Brevicoryne brassicae and Thrips tabaci abundance on Brassica oleracea var. acephalaGermano Leão Demolin Leite (1) , Marcelo Picanço (2) , Gulab Newandram Jham (3) and Márcio Dionízio Moreira Abstract -Kale Brassica oleracea var. acephala is attacked by whitefly Bemisia tabaci, aphid Brevicoryne brassicae and Thrips tabaci. One of the main reasons for extensive insecticide application is the lack of information about factors that control insect population. The objectives of this study were to investigate the relationships between predators and parasitoids, organic compound leaves, levels of leaf nitrogen and potassium, total rainfall, relative humidity, sunlight and median temperature on the abundance of whitefly, aphid, and thrips in kale genotype "Talo Roxo". The beating tray method, direct counting and magnifying lens were used to estimate the number of these pests, predators and parasitoids. Median temperature, sunlight and relative humidity correlated to the amount of leaf nonacosane, which in turn was associated with aphids population increase. A tendency in the reduction of aphids and thrips populations with increase in total rainfall was observed. The whitefly can be a harmful pest in kale producing regions of higher temperature and smaller rainfall. In regions which present moderate temperature, where there is a high incidence of aphids, genotype with low leaf wax content should be chosen. Natural enemies, especially the parasitoid Adialytus spp., can control agents of the aphids population in kale. Index terms: population dynamics, nonacosane, climatic factors, Braconidae. Abundância de Bemisia tabaci, Brevicoryne brassicae e Thrips tabaci em Brassica oleracea var. acephalaResumo -A couve, Brassica oleracea var. acephala, é atacada por mosca-branca Bemisia tabaci, pulgão Brevicoryne brassicae e tripes Thrips tabaci. Uma das principais razões para o uso intensivo de inseticidas é a falta de informação sobre os fatores que controlam a população de insetos. O objetivo deste estudo foi investigar as relações entre predadores e parasitóides, compostos orgânicos foliares, níveis foliares de nitrogênio e de potássio, pluviosidade total, umidade relativa, insolação e temperatura média na abundância da mosca-branca, pulgões e tripes em couve genótipo Talo Roxo. Foi usado o método da batida em bandeja, contagem direta e lupas de aumento para estimar o número dessas pragas, de predadores e de parasitóides. A temperatura média, insolação e umidade relativa correlacionaram com nonacosano foliar que, por sua vez, esteve associado com o aumento populacional de pulgões. Foi observada uma tendência na redução de pulgões e de tripes com o aumento da pluviosidade total. A mosca-branca pode ser uma praga prejudicial em regiões produtoras de couve de maior temperatura e de menor pluviosidade. Em regiões onde se tem maior incidência de pulgões (regiões de temperatura moderada) deve-se escolher um genótipo com baixo conte...

show abstract

“…The heavier wax deposit on leaves of the tolerant cultivar substantially decreased the rate and extent of herbicide penetration of the cuticle. The development of leaf cuticle of velvet mesquite was investigated [22] and detected well defined crystalline wax structures on even the youngest leaves. The amount of wax appeared to increase with leaf maturity, and a dendritic-shaped wax plate was formed in July in addition to the small, linear structure already present.…”

Section: Introductionmentioning

confidence: 99%

Variability in Epicuticular Wax in 35 Woody Plants in Linares, Northeast Mexico

Maiti¹,

Hg²

2016

Forest Res

View full text Add to dashboard Cite

Environmental influences on cuticle development and resultant foliar penetration

Cited by 174 publications

References 55 publications

Morphological and Ultrastructural Studies of Plant Cuticular Membranes. I. Sun and Shade Leaves of Quercus velutina (Fagaceae)

Morphological and Ultrastructural Studies of Plant Cuticular Membranes. I. Sun and Shade Leaves of Quercus velutina (Fagaceae)

Bemisia tabaci, Brevicoryne brassicae and Thrips tabaci abundance on Brassica oleracea var. acephala

Variability in Epicuticular Wax in 35 Woody Plants in Linares, Northeast Mexico

Contact Info

Product

Resources

About