Geographic Distribution and Host Range of Lethal Bronzing Associated with Phytoplasma Subgroup 16SrIV-D on Palms in Southern Louisiana

Document Type

Article

Publication Date

1-1-2020

Abstract

Lethal bronzing (LB), also previously known as date palm lethal‎decline or Texas Phoenix palm decline, associated with phytoplasma‎subgroup 16SrIV-D, was first identified in Louisiana in‎December 2013. A survey of palms showed that the disease was‎not only confined to City Park in New Orleans, where it was first‎detected, but is present in other parts of Orleans Parish, as well as‎two adjacent parishes. Canary Island date palms (Phoenix canariensis)‎tested positive at the highest frequency, and some edible‎date palms (P. dactylifera) and a small proportion of cabbage‎palms (Sabal palmetto) tested positive as well. Symptoms do not‎appear to be a reliable indicator of LB, because a substantial‎proportion of palms indicated as symptomatic tested negative.‎Furthermore, not all infected palms showed symptoms. Since the‎palm survey conducted in 2015 to 2016, LB has positively been‎identified from silver date palm (P. sylvestris) and Chinese windmill‎palm (Trachycarpus fortunei) in three additional parishes in‎Louisiana.

Publication Source (Journal or Book title)

Plant Health Progress

First Page

350

Last Page

355

This document is currently not available here.

Share

COinS