Taxonomic implications of normal and abnormal stomatal complexes in Indigofera L. (Indigofereae, Faboideae, Fabaceae).

Autor: Badry MO; Department of Botany & Microbiology, Faculty of Science, South Valley University, Qena, 83523, Egypt. mohamedowis@svu.edu.eg., Osman AK; Department of Botany & Microbiology, Faculty of Science, South Valley University, Qena, 83523, Egypt., Aboulela M; Botany and Microbiology Department, Faculty of Science, Assiut University, Assiut, 71516, Egypt., Gafar S; Department of Botany & Microbiology, Faculty of Science, South Valley University, Qena, 83523, Egypt., Nour IH; Botany and Microbiology Department, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt.
Jazyk: angličtina
Zdroj: Protoplasma [Protoplasma] 2024 Sep; Vol. 261 (5), pp. 991-1021. Date of Electronic Publication: 2024 Apr 19.
DOI: 10.1007/s00709-024-01951-0
Abstrakt: This study is the first to report the foliar and stem epidermal micro-morphology of 13 taxa of Indigofera L. (Fabaceae) using light (LM) and scanning electron microscopy (SEM). The micro-morphological characteristics studied here are related to the epidermal cell shape, size, frequency, anticlinal wall pattern, and stomatal complex types, size, position, frequency, and index. The study revealed 19 major normal stomatal types with eight subtypes and seven major abnormal stomatal types with 13 subtypes. The stomatal index was lower on the abaxial leaf surface than on the adaxial surface. Notably, the adaxial surface of I. hochstetteri had the highest stomatal index (27.46%), while the abaxial surface of I. oblongifolia had the lowest (9.95%). The adaxial surface of I. hochstetteri also displayed the highest average stomatal frequency (38.67), while the adaxial surface of I. spinosa had the lowest average frequency (9.37). SEM analysis revealed that most leaves had slightly sunken to sunken stomata, while stem stomata were positioned at the same level as epidermal cells in most taxa. Indigofera's foliar and stem epidermal anatomy recommends their application as baseline data coupled with other taxonomic data for the delimitation and differentiation of closely related taxa in the genus. The study provides a comprehensive description, illustrations, images, and micrographs of the stomatal types, as well as a taxonomic key for distinguishing the studied taxa of Indigofera.
(© 2024. The Author(s).)
Databáze: MEDLINE
Externí odkaz: