Leaf endophytic microbiomes of different almond cultivars grafted to the same rootstock

Author:

Saldierna Guzmán J. Paola123ORCID,Dove Nicholas C.4,Hart Stephen C.25

Affiliation:

1. Quantitative and Systems Biology University of California Merced California USA

2. Sierra Nevada Research Institute University of California Merced California USA

3. Howard Hughes Medical Institute Salk Institute for Biological Studies La Jolla California USA

4. Biosciences Division Oak Ridge National Laboratory Oak Ridge Tennessee USA

5. Department of Life & Environmental Sciences University of California Merced California USA

Abstract

Abstract Aims We compared the bacterial endophytic communities of three genetically different almond cultivars that were all grafted on the same type of rootstock, growing side by side within a commercial orchard. Methods and Results We examined the diversity of leaf bacterial endophytes using cultivation-independent techniques and assessed the relative abundance of bacterial families. Two of these three cultivars were dominated by Pseudomonadaceae, while the bacterial composition of the third cultivar consisted mainly of Streptococcaceae. Conclusions The experimental set up allowed us to analyse the impact of the shoot cultivar on endophytes, minimizing the influence of rootstock, biogeography, and cultivation status. Our data suggest that the shoot cultivar can shape the leaf endophytic community composition of almond trees. Significance and Impact of the Study Our results suggest that the shoot cultivar controls the composition of the foliar bacterial endophytic community of almonds. Overall, our results could provide a first step to develop strategies for a more sustainable almond agriculture.

Funder

UC MEXUS-CONACYT

Yara North America Almond Fellowship

NASA MIRO

Oak Ridge National Laboratory

Publisher

Oxford University Press (OUP)

Subject

Applied Microbiology and Biotechnology,General Medicine,Biotechnology

Reference71 articles.

1. A new method for non-parametric multivariate analysis of variance;Anderson;Austral Ecology,2001

2. Regulation and function of root exudates;Badri;Plant, Cell & Environment,2009

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