Brazilian Journal of Microbiology Brazilian Journal of Microbiology
Braz J Microbiol 2018;49:714-22 - Vol. 49 Num.4 DOI: 10.1016/j.bjm.2017.12.013
Environmental Microbiology
Cultivated bacterial diversity associated with the carnivorous plant Utricularia breviscapa (Lentibulariaceae) from floodplains in Brazil
Felipe Rezende Limaa,b, Almir José Ferreiraa,b, Cristine Gobbo Menezesc, Vitor Fernandes Oliveira Mirandac, Manuella Nóbrega Douradoa,, , Welington Luiz Araújoa,b,,
a Departmento de Microbiologia, Instituto de Ciencias Biomedicas, Universidade de São Paulo, Av. Prof. Lineu Prestes, 1374-Ed. Biomédicas II, Cidade Universitária, 05508-900 São Paulo, SP, Brazil
b Núcleo Integrado de Biotecnologia, NIB, Universidade de Mogi das Cruzes, Av. Dr. Cândido Xavier de Almeida Souza, 200, Centro cívico, 08780-911 Mogi das Cruzes, SP, Brazil
c Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista UNESP, Via de acesso Prof. Paulo Donato Castellane s/n, Centro, 14884-900 Jaboticabal, SP, Brazil
Received 18 September 2017, Accepted 24 December 2017
Abstract

Carnivorous plant species, such as Utricularia spp., capture and digest prey. This digestion can occur through the secretion of plant digestive enzymes and/or by bacterial digestive enzymes. To comprehend the physiological mechanisms of carnivorous plants, it is essential to understand the microbial diversity related to these plants. Therefore, in the present study, we isolated and classified bacteria from different organs of Utricularia breviscapa (stolons and utricles) and from different geographic locations (São Paulo and Mato Grosso). We were able to build the first bacterium collection for U. breviscapa and study the diversity of cultivable bacteria. The results show that U. breviscapa bacterial diversity varied according to the geographic isolation site (São Paulo and Mato Grosso) but not the analyzed organs (utricle and stolon). We reported that six genera were common to both sample sites (São Paulo and Mato Grosso). These genera have previously been reported to be beneficial to plants, as well as related to the bioremediation process, showing that these isolates present great biotechnological and agricultural potential. This is the first report of an Acidobacteria isolated from U. breviscapa. The role of these bacteria inside the plant must be further investigated in order to understand their population dynamics within the host.

Keywords
Utricularia breviscapa, Microbial ecology, Aquatic microbiota, Microbial communities
Braz J Microbiol 2018;49:714-22 - Vol. 49 Num.4 DOI: 10.1016/j.bjm.2017.12.013