RT info:eu-repo/semantics/article
T1 Histological description of Saxifraga paniculata leaves with special focus on structures that release CaCO3
A1 Michavila Puente-Villegas, Santiago
A1 Encina García, Antonio Esteban
A1 Frey Domínguez, Carlos
A1 Álvarez Nogal, Rafael
A2 Biologia Celular
K1 Biología
K1 Saxifraga paniculata Mill
K1 Leaf histology
K1 Hydathodes
K1 Epithem
K1 Camptodromus venation pattern
K1 Anomocytic stoma
K1 Calcium carbonate (CaCO3) and limestome rocks
K1 2417.16 Histología Vegetal
K1 2407.03 Morfología Celular
K1 2417.19 Fisiología Vegetal
AB [EN] Saxifraga paniculata is a subalpine succulent perennial plant arranged in a rosette that is usually found in shallow soil among limestone rocks. Stereoscopic, light and scanning electron microscopy were used to describe the anatomical structure of S. paniculata leaves, paying special attention to structures related to CaCO3 (calcium carbonate) release. Anomocytic stomata are unevenly distributed on each leaf face, being absent in the lower third. The basal leaf margin presents translucent pluricellular trichomes of variable length and width. Towards the apical margin, trichomes become teeth. Both trichomes and teeth are completely covered with whitish CaCO3 crystals. Each tooth has a circular cavity connected to a single hydathode through pores. Clearing treatment revealed camptodromous leaf venation. Anatomical structure shows a bifacial cross-section with spongy mesophyll cells at basal part, becoming heterogeneous at the apex with palisade mesophyll on the adaxial face. Hydathodes are epithematic and connected to outer cavities via two kidney-shaped guard cells showing large substomatal cavity. The epithem is surrounded by a thickened sheath and is formed of highly packed elongated cells with interspersed tracheary elements. CaCO3 deposits consist of microscopic crystals with varying geometries, of which the rhombus is the basic unit
PB Taylor and Francis
SN 1126-3504
LK https://hdl.handle.net/10612/19901
UL https://hdl.handle.net/10612/19901
NO Michavila, S., Encina, A., Frey, C., & Álvarez, R. (2022). Histological description of Saxifraga paniculata leaves with special focus on structures that release CaCO3. Plant Biosystems, 156(2), 497-505. https://doi.org/10.1080/11263504.2021.1887954
DS BULERIA. Repositorio Institucional de la Universidad de León
RD Jul 17, 2024