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- Title
Host Genotype and Precipitation Influence of Fungal Endophyte Symbiosis and Mycotoxin Abundance in a Locoweed.
- Authors
He, Wei; Guo, Linwei; Wang, Lei; Zhao, Qianqian; Guo, Lizhu; Cao, Wei; Mur, Luis A. J.; Wei, Yahui
- Abstract
Many plant endophytes produce mycotoxins, but how host genetic variation influences endophyte colonization and mycotoxin production under natural conditions is poorly understood. This interaction has not been fully considered in many previous studies which used controlled experiments with agronomic or model plant species. Here, we investigated this interaction in a naturally occurring forb (a locoweed species) Oxytropis ochrocephala, its symbiotic endophyte Alternaria oxytropis, and the mycotoxin swainsonine. Host genetic variation was characterized by microsatellite markers. Endophyte infection rate and swainsonine levels were determined by PCR and HPLC, respectively. Genetic markers defined two distinct host populations and revealed that host genetics were significantly correlated with geographical location, elevation, and precipitation. As the host diverged, symbiotic interactions were reduced or failed to produce detectable swainsonine in one host population. Host genotype and precipitation had a significant impact in shaping swainsonine production at the population level. This study highlights the effect of host genotype in influencing this interaction in locoweeds.
- Subjects
ENDOPHYTES; ASTRAGALUS (Plants); SWAINSONINE; SYMBIOSIS; MICROSATELLITE repeats; GENOTYPES; GENETIC markers; MYCOTOXINS
- Publication
International Journal of Molecular Sciences, 2019, Vol 20, Issue 21, p5285
- ISSN
1661-6596
- Publication type
Article
- DOI
10.3390/ijms20215285