Biotechnological potential of the yeast Kluyveromyces marxianus /Nádia Cristina Viana. --versão revisada de acordo com a Resolução CoPGr 6018 de 2011. --Piracicaba, 2023. 93 p. Tese (Doutorado) --USP / Escola Superior de Agricultura "Luiz deQueiroz". 1. Leveduras não convencionais 2. Fermentação alcoólica 3. Fatores estressantes 4.Caracterização I. Título 88882.378331/2019-01). I would like to thank, with all my heart, my doctoral supervisor Prof. Dr. Sandra Helena da Cruz for all the support, supervision, care and comprehension. Thank you for having me in your research group and supporting my growth, not only as scientist, but also as a person, during all those years working together. The lessons, the laughter, the guidance you shared with me have shaped me into the person I am today, and for that I am deeply grateful. I would like to thank the team at LBAB -Pedro Lucentini, Rosemary Silva and Sylvino Torrezan, for all the help, support and friendship, thank you for welcoming me from the very start and being part of my journey. I am also thankful for the unwavering support from the SmartYeast crew -Dr. Cauré Portugal, Dr. Renata Furlan and MSc. Lethicia Corniani, for keeping me company and supporting the development of my research. I am extremely grateful for Prof. Dr. Antonio Sampaio Baptista, who so kindly accepted to collaborate with me on this project, for welcoming me into your laboratory and allowing me develop a vital part of my research with you. The team at LTSBioespecially MSc. Ana Paula Maria da Silva and MSc. Laysa Macielfor all the support and teachings. I would like to thank Prof. Dr. Simone Lira, the coordinator of the postgraduate program in Agricultural Microbiology, for the support you gave me and the other students, always encouraging us to do better and succeed. I would like to thank Prof. Dr. Luiz Humberto Gomes (in memorian) for the support at the beginning of my research; I would have loved to share the results of this work with you.To all my friends and colleagues who have come and gone throughout these four years working together, I am so thankful! Thiara, Carolina, Rafaela, Helen, Graziela, Marcelle, Bianca, Carolinne and the Agricultural Microbiology team of amazing people, thank you for everything.To my dear best friend Beatris, for your company, support and love, for always cheering me on, I am more grateful than I could ever put into words.Lastly, I would like to thank my beautiful parents, Olga and Paulo, for their incredible support, for being there for me in every step of the way, being an amazing support system and being so caring towards me. I did what I did and I came this far because you were there 8