caa a22 4500 606208313 CHVBK 20210128101022.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s00425-015-2341-1 doi (NATIONALLICENCE)springer-10.1007/s00425-015-2341-1 Micromorphology, histochemistry and ultrastructure of the foliar trichomes of Withania somnifera (L.) Dunal (Solanaceae) [Elektronische Daten] [Prelina Munien, Yougasphree Naidoo, Gonasageran Naidoo] Main conclusion : The leaves of Withania somnifera contained four morphologically distinct trichome types: glandular capitate, non-glandular dendritic (branched), non-glandular bicellular and non-glandular multicellular trichomes. Major phytochemical compounds present within glandular and non-glandular trichomes were alkaloids and phenolic compounds. The aim of this study was to characterize the micromorphology of the foliar trichomes of Withania somnifera as well as to elucidate the location and composition of the secretory products. Trichome density and length was also determined in three developmental stages of the leaves. Light microscopy and scanning electron microscopy showed the presence of four morphologically distinct trichome types: glandular capitate, non-glandular dendritic, non-glandular bicellular and non-glandular multicellular. The dendritic trichomes exhibited cuticular warts which are involved in the "Lotus-Effect”. Glandular capitate and non-glandular dendritic trichomes were aggregated on the mid-vein of young and mature leaves, possibly to protect underlying vasculature. Histochemical staining also revealed the presence of two major classes of phytochemical compounds that are of medicinal importance, i.e. alkaloids and phenolic compounds. These compounds are used to treat a wide variety of ailments and also act as chemical deterrents in plants. The results of this study explain possible roles of four morphologically distinct trichome types based on their morphology, foliar distribution and content. Springer-Verlag Berlin Heidelberg, 2015 Alkaloids nationallicence Calcium oxalate crystals nationallicence Capitate trichomes nationallicence Cuticular warts nationallicence Dendritic trichomes nationallicence Phenolic compounds nationallicence Munien Prelina School of Life Sciences, University of KwaZulu-Natal, P/Bag X54001, 4000, Durban, South Africa aut Naidoo Yougasphree School of Life Sciences, University of KwaZulu-Natal, P/Bag X54001, 4000, Durban, South Africa aut Naidoo Gonasageran School of Life Sciences, University of KwaZulu-Natal, P/Bag X54001, 4000, Durban, South Africa aut Planta Springer Berlin Heidelberg 242/5(2015-11-01), 1107-1122 0032-0935 242:5<1107 2015 242 425 https://doi.org/10.1007/s00425-015-2341-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00425-015-2341-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Munien Prelina School of Life Sciences, University of KwaZulu-Natal, P/Bag X54001, 4000, Durban, South Africa aut NATIONALLICENCE 700 1- Naidoo Yougasphree School of Life Sciences, University of KwaZulu-Natal, P/Bag X54001, 4000, Durban, South Africa aut NATIONALLICENCE 700 1- Naidoo Gonasageran School of Life Sciences, University of KwaZulu-Natal, P/Bag X54001, 4000, Durban, South Africa aut NATIONALLICENCE 773 0- Planta Springer Berlin Heidelberg 242/5(2015-11-01), 1107-1122 0032-0935 242:5<1107 2015 242 425