Seed-Derived Microbial Colonization of Wild Emmer and Domesticated Bread Wheat (Triticum dicoccoides and T. aestivum) Seedlings Shows Pronounced Differences in Overall Diversity and Composition.

MBio
Ezgi ÖzkurtEva H Stukenbrock

Abstract

The composition of the plant microbiota may be altered by ecological and evolutionary changes in the host population. Seed-associated microbiota, expected to be largely vertically transferred, have the potential to coadapt with their host over generations. Strong directional selection and changes in the genetic composition of plants during domestication and cultivation may have impacted the assembly and transmission of seed-associated microbiota. Nonetheless, the effect of plant speciation and domestication on the composition of these microbes is poorly understood. Here, we have investigated the composition of bacteria and fungi associated with the wild emmer wheat (Triticum dicoccoides) and domesticated bread wheat (Triticum aestivum). We show that vertically transmitted bacteria, but not fungi, of domesticated bread wheat species T. aestivum are less diverse and more inconsistent among individual plants compared to those of the wild emmer wheat species T. dicoccoides. We propagated wheat seeds under sterile conditions to characterize the colonization of seedlings by seed-associated microbes. Hereby, we show markedly different community compositions and diversities of leaf and root colonizers of the domesticated bread wheat co...Continue Reading

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Citations

Feb 16, 2021·Environmental Microbiology·Ryszard SoluchTal Dagan
Jun 9, 2021·MSystems·Aude RochefortAlain Sarniguet
Aug 7, 2021·Communications Biology·Riccardo SoldanGail M Preston
Aug 24, 2021·Frontiers in Microbiology·Hyun Kim, Yong-Hwan Lee
Oct 26, 2021·Frontiers in Microbiology·Natalia González-BenítezMaría Carmen Molina

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Methods Mentioned

BETA
PCR

Software Mentioned

QIIME2
custom R scripts
q2
R
ampvis2
metagenomeSeq
PERMANOVA
PMCMR R package
bcl2fastq Conversion
Image Lab

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