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Ultrastructural changes in the leaves of Zea mays L. plants treated with atrazine
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. Malan --- , J.H. Visser --- Department of Botany, H.A. van de Venter --- Department of Botany,Veinal chlorosis was induced in the lower leaves of young maize plants following treatment with atrazine (2-chloro-4-ethylamino-6- isopropylamino-s-triazine). An ultrastructural investigation indicated that mesophyll chloroplasts, consisting of grana, thylakoids and stroma showed severe disintegration. The seemingly unaffected bundle sheath chloroplasts... -
Ultrastructural changes caused by post-emergence herbicides in leaves of bengal wandering jew (Commelina benghalensis L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.I. Ferreira --- , Republic of South Africa C.F. van der Merwe --- Laboratory for Microscopy and Micro-Analysis, Republic of South Africa C.F. Reinhardt --- Department of Plant Production and Soil Science, Republic of South AfricaThe leaf surface morphology of C. benghalensis and the ultra structura I changes in C. benghalensis leaves caused by herbicide treatments in combination with adjuvants were studied with electron microscopes. The study indicated u It ra structural changes in treated... -
EFFECT OF PHOSPHATE CONCENTRATION ON THE FINE STRUCTURE OF THE CYANOBACTERIUM, MICROCYSTIS AERUGINOSA KÜTZ. EMEND. ELENKIN
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: DerylJ. Barlow --- , South Africa W. L.J. van Rensburl --- , South Africa A. J.H. Pieterse --- , South Africa J.N. Eloff --- , South AfricaMicrocystis aeruginosa toxic strain UV-006 stored a fixed amount of polyphosphate in spherical granules located in the centroplasm. Twenty four hours of phosphate starvation induced use of stored polyphosphate, manifested by reduction in granule numbers. Reintroduction of 2, 4 or... -
Histopathological biomarkers and genotoxicity in gill and liver tissues of Nile tilapia Oreochromis niloticus from a polluted part of the Nile River, Egypt
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AA Baiomy --- Zoology Department, EgyptFish health is affected by water pollution. Oreochromis niloticus collected during summer 2014 from El-Serw, a polluted site on the Nile River, were compared with fish from a reference site, El-Zamalek. Histopathological changes were detected in gill and liver tissue... -
Curcumin mitigates fenthion-induced testicular toxicity in rats: histopathological and immunohistochemical study
Item type: Journal Article • Journal: African Zoology • Authors: Amel I Othman --- Department of Zoology, Faculty of Science, Egypt Manal Abdel-Hamid --- Department of Zoology, Faculty of Science, EgyptFenthion is a widely used organophosphorus pesticide in agriculture that induces different cytotoxic effects, including male reproductive toxicity. The present work aimed to study the ameliorative effects of curcumin, a potential therapeutic agent against several chronic diseases, on reproductive toxicity...