B2146 - LABORATORIO DI BIODIVERSITA' ED EVOLUZIONE DELLE PIANTE E DEGLI ORGANISMI FOTOAUTOTROFI

Learning outcomes

The main educational objective of this course is to offer an advanced-level overview of the characteristics of all the main groups of photoautotrophic organisms, discussed by identifying the key morphological, physiological, functional, ecological adaptations, which are also the basis for the use of these organisms as indicators and proxies in environmental sciences. Special emphasis is on the acquisition of professional knowledge on distinctive characters, procedures, materials and resources (texts, websites, etc.) for the taxonomic identification of organisms of the groups considered, i.e.: cyanoprokaryotes, diatoms, all the main algal groups, bryophytes (hornworts, liverworts, mosses), tracheophytes (vascular plants: lycophytes, ferns, Gymnosperms, Angiosperms).

Course contents

Taxonomy, systematics, evolution. Biological events in geological time. Cyanoprokaryotes (and Prochlorophytes). Endosymbiosis. Red algae. Cryptophytes. Dinoflagellates. Algal blooms. Xanthophytes. Diatoms. Chrysophytes. Brown alagae. Euglenophytes. Green algae. Lichens. Desmidiaceae. Carophytes. Algal groups believed to be ancestors of land plants. Adaptations of plants to life on land. Bryophytes (hornworts, liverworts, acrocarpal and pleurocarpal mosses). Pteridophytes (horsetails, lycopods, spikemosses, quillworts, true ferns and life cycle). Gymnosperms (cycadophytes, Ginkgo, gnetophytes, conifers). Angiosperms: origin, basal groups, central groups. Magnoliaceae. Insights on Asteraceae, Solanaceae, Rosaceae, Apiaceae, Lamiaceae, Fabaceae, Brassicaceae, Liliaceae, Poaceae. Main macrophyte species of Italian lakes. Ten tree species of the Apennine woods of central Italy. Microscopy laboratories (analysis of materials from three environments): - siliceous spring of the Adamello-Brenta Natural Park: epiphytic diatoms, liverworts, mosses, ferns, gymnosperms; - carbonate springs of the Adamello-Brenta Natural Park, little fountain in the Botanical Gardens and petrifying spring of Labante (observation of permanent diatoms mounts in immersion oil at x1000): focus on cyanoprokaryotes, in particular on morpho-functional structures that optimize the assimilation of macronutrients (e.g., heterocytes, calyptra) and staining to highlight the possible presence of phosphatase (BCIP), green algae; - rocky shore algae of Lake Garda: green algae, red algae (assessment of resistance to desiccation of Bangia atropurpurea), angiosperms. Excursion to the petrifying spring of Labante: it allows you to see in nature (even with a portable microscope) representatives of all the main groups covered in the course, from cyanoprokaryotes to angiosperms. Practical activity in the field at the Parco dei Gessi Bolognesi focused on the analysis of plant diversity (taxonomic level) and, specifically, on the observation and identification of angiosperms.

Readings/Bibliography

Study materials on Virtuale.

Strasburger – Botanica, Evoluzione, Sistematica ed Ecologia (Vol. II), 10ª ed. Volume 2 – EVOLUZIONE, SISTEMATICA ED ECOLOGIA

Judd W.S. , Christopher S. Campbell, Elizabeth A. Kellogg, Peter F. Stevens, Michael J. Donoghue. 2019. Botanica Sistematica - Un approccio filogenetico. ISBN: 978-88-299-2998-6. 708 pp.

Teaching methods

Frontal lessons. Lessons-laboratories (lessons with Power-Point and possibility of observing materials relating to the taxonomic groups treated). Microscopy laboratories with preparations and stains.

Excursions and practical activity in the field.

In consideration of the types of activities and teaching methods adopted, the attendance of this training activity requires the performance of all students of modules 1 and 2 in e-learning mode and participation in module 3 of specific training on safety and health in the places of study. Information on dates and methods of attendance of module 3 can be consulted in the specific section of the degree program website.

Assessment methods

Oral exam with at least three main questions, one of which refers to laboratories, laboratory-lessons, or excursions.

Possibility of presenting (at least the evening before the exam) a report, with extensive iconography, on one of the laboratories. If evaluated positively, it improves the final exam score.

Teaching tools

PowerPoint presentations. Selected videos. Fresh materials relating to the taxonomic groups treated, even outside of laboratories and laboratory-lessons.

Equipment for laboratory and field exercises (including equipment for sampling water and sediment and for measuring ecological factors to characterize the habitats of photoautotrophic communities).

Office hours

See the website of Marco Cantonati