Chilean Journal of Agricultural Research
Chilean Journal of Agricultural Research
5 years ago

Plant growth promoting rhizobacteria from Juan Fernández archipelago improve germination rate of endangered plant Solanum fernandezianum Phil.

Plant growth promoting rhizobacteria from Juan Fernández archipelago improve germination rate of endangered plant <em>Solanum fernandezianum</em> Phil.
Jorge Carrasco-Fernández, Matías Guerra, Jean Franco Castro, Luis Bustamante, Lorena Barra-Bucarei, Ricardo Ceballos, Natalí Fernández, Steve Edgington, Andrés France
Robinson Crusoe Island, Chile, has one of the highest densities of endemic plants in the world, however many of its native and endemic species, such as Solanum fernandezianum Phil., are currently declared endangered. Coating the seeds of native plants with locally sourced plant-growth-promoting bacteria can be used as a tool for conservation programs of endangered plant species. Isolation and screening of rhizosphere bacteria from Robinson Crusoe Island resulted in the selection of three bacteria: Serratia sp. RGM 2525, Raoultella sp. RGM 2526, and Pseudomonas sp. RGM 2607, due to their capacity of producing indole compounds (30-45 μL mL-1) and indoleacetic acid (IAA) (5-10 μg mL-1). The effect of these strains on the seed germination rate of S. fernandezianum was evaluated under five treatments: individual inoculation of each bacteria, inoculation of a mixture of the three bacteria and a treatment without bacteria (control). Inoculation of bacteria improved the seed germination rate of S. fernandezianum compared to the control treatment, with the bacterial mix as the best treatment with 26.9% germination (p < 0.05), 10.2% higher than control. Bioinoculants formulated with bacteria isolated from rhizosphere soils could improve the seed germination rate of the endangered plant S. fernandezianum.

Publisher URL: https://scielo.conicyt.cl/scielo.php

DOI: 10.4067/s0718-58392020000100041

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.