Bacterial endophytes diversity of tree legumes from Argentina

MARTINEZ-ALCANTARA, VIRGINIA; MEDINA, ROCIO; GAUNA, JUAN MARCELO; BALATTI, PEDRO ALBERTO

Agrociencia Uruguay

RedBio

Año: 2020

2301-1548

The aim of this work was to isolate and characterize, based on microbiological as well as molecular markers, bacteria within nodules of three native trees species from South America: Poecilanthe parvifloraBenth (Lapachillo), Vachellia caven(Molina) Seigler & Ebinger (Espinillo), and Enterolobium contortisiliquum (Vell.) Morong (Timbó).In line with this, we isolated and characterized 15 bacteria from P. parviflora, 6 from V. cavenand 1 from E. contortisiliquum. Among them we identified representatives of Bradyrhizobium sp. from E. contor-siliquum and P. parviflora, as well as of Ensifer sp. (Sinorhizobium) and Mesorhizobium sp. from V. caven. Also, other bacteria were found, like representatives of Bacillus sp., Microbacterium sp. andCurtobacterim sp., as well as Caulobacter sp.,Dyella sp.,Pseudomonas sp. and Enterobacter sp. Some of these isolates inhibited the growth of two fungal plant pathogens. So, nodules of these native legumes not only are occupied by highly diverse rhizobia but also by other bacteria that might promote plant growth