3 years ago

Seed-associated fungi in the alpine tundra: Both mutualists and pathogens could impact plant recruitment

Seed-borne microbes are important pathogens and mutualists in agricultural crops but are understudied in natural systems. To understand the diversity and function of seed-borne fungi in alpine tundra, we cultured fungi from seeds of six dominant plant species prior to seed dispersal and evaluated their function using germination experiments in Zea mays. A total of 55 fungal cultures (9 species) were isolated with up to 4 genera per plant species. Dominant orders included Pleosporales and Hypocreales. Sixty-six percent of the isolates showed pathogenic effects. The most common genus was Alternaria which had a negative effect on both seed germination and plant growth. Cladosporium was only isolated from the two dominant plant species and showed positive effects on germination and plant growth. The high number of pathogenic fungi found coupled with the variation in seed endophytic communities among plant species suggests that seed-associated fungi could affect community composition through differential seedling recruitment.

Publisher URL: www.sciencedirect.com/science

DOI: S175450481730096X

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.