Evidence of Xylella fastidiosa Infection and Associated Thermal Signatures in Southern Highbush Blueberry ( Vaccinium corymbosum Interspecific Hybrids).

Abstract

Xylella fastidiosa , a gram-negative bacterium vectored to plants via feeding of infected insects, causes a number of notorious plant diseases throughout the world, such as Pierce's disease (grapes), olive quick decline syndrome, and coffee leaf scorch. Detection of Xf in infected plants can be challenging because the early foliar disease symptoms are subtle and may be attributed to multiple minor physiological stresses and/or borderline nutrient deficiencies. Furthermore, Xf may reside within an infected plant for one or more growing seasons before traditional visible diagnostic disease symptoms emerge. Any method that can identify infection during the latent period or pre-diagnostic disease progress state could substantially improve the outcome of disease control interventions. Because Xf locally and gradually impairs water movement through infected plant stems and leaves over time, infected plants may not be able to effectively dissipate heat through transpiration-assisted cooling, and this heat signature may be an important pre-diagnostic disease trait. Here, we report on the association between thermal imaging, the early stages of Xf infection, and disease development in blueberry plants, and discuss the benefits and limitations of using thermal imaging to detect bacterial leaf scorch of blueberries.

Plant phenotyping relevance

熱画像を用いてブルーベリーの感染初期状態と病害進展を検出する方法を評価しており、植物病態の表現型取得が研究の中心である。

Code and data availability

The paper's thermal imaging measurements and analysis data are not publicly deposited; the Data Availability Statement says data are available only upon request to the corresponding author. No public dataset, image, or code repository is provided. The Fotric 228GRD URL is merely a commercial product page for the camera

No evidence-backed public reproduction asset is currently recorded.