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.com
Volume 07
Advances in Crop Science and Technology
ISSN: 2329-8863
Agri 2019
August 15-16, 2019
August 15-16, 2019 | Rome, Italy
14
th
International Conference on
Agriculture & Horticulture
Symbiont diversity of
Myzus persicae
complex
Marco A. Cabrera-Brandt
University of Talca, Chile
A
phids are herbivorous insectswidelydistributedaround theworld,many species of aphids are agricultural pests causing
significant economical loses due to direct damages by feeding and indirect damages by transmitting phytoviruses and
contributing to fungus proliferation. Aphids live in associationwith endosymbiont bacteria classified as obligate or primary
endosymbionts (without them the aphid does not survive) and facultative or secondary endosymbionts (the aphid can
survive without them, but owning them can modify their ecological and physiological features). Among the most relevant
aphid pests the peach-potato aphid,
Myzus persicae
(Sulzer), is a polyphagous insect able to utilize a wide range of weeds
and crops, and possess a subsepecies particularly well adapted to tobacco (
Nicotiana tabacum
) named
Myzus persicae
nicotianae
. Know the endosymbionts of this aphid is fundamental to understand aspects related to the evolution, ecology
and control of this pest; however, the technology required for this was, until recently, insufficient. Here, a metagenomic
approach was used to identify all the bacterial species present in this aphids, for which a samples were collected from
different hosts, in a north south transect of 1800 km in Chile. After the massive sequencing and bioinformatic analysis,
different bacteria were identified, that include some belonging different families, as the Oxalobacteraceae (related to
host plants use); Comamonadaceae and Pseudomonadaceae that are plants and human pathogens; Enterobacteriaceae
including the obligatory endosymbiont (
Buchnera aphidicola
) and facultative endosymbionts involved in the defense
against natural enemies and other bacteria species that are human pathogens.These results open a new research line aimed
at understanding the role of bacteria on evolutionary, ecological and physiological traits of this pest.
mcabrerabrandt@gmail.comAdv Crop Sci Tech 2019, Volume 07