Economic Contributions of the Florida Citrus Industry in 2015-16

Court, Christa D.; Hodges, Alan W.; Rahmani, Mohammad; Spreen, Thomas H.

doi:10.32473/edis-fe1021-2017

Cited by 23 publications

(17 citation statements)

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“…Since detection in Florida in 2005, citrus production has decreased by 74% 3, 4 . As one of the largest citrus‐producing states in the US, Florida has experienced a decline of about 5000 jobs and $1 billion annually since 2015 2, 5, 6 . HLB causes citrus trees to develop weakened root systems, discolored leaves, and greener fruit that prematurely falls off the tree, leading to lower crop yields 7, 8 .…”

Section: Introductionmentioning

confidence: 99%

“…3,4 As one of the largest citrus-producing states in the US, Florida has experienced a decline of about 5000 jobs and $1 billion annually since 2015. 2,5,6 HLB causes citrus trees to develop weakened root systems, discolored leaves, and greener fruit that prematurely falls off the tree, leading to lower crop yields. 7,8 Chemical changes in fruit due to HLB infection results in distinctly bitter juice that lacks sweetness and fruity/orange flavor.…”

Section: Introductionmentioning

confidence: 99%

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Quantification of insecticide spatial distribution within individual citrus trees and efficacy through Asian citrus psyllid reductions under different application methods

Rehberg

Trivedi

Bahureksa

et al. 2020

Pest Management Science

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BACKGROUND Citrus greening disease (Huanglongbing, HLB) has infected >90% of Florida's oranges and thus growers are desperate to improve pest management strategies. In this field study, insecticide application efficacy was investigated with liquid chromatography mass spectrometry to determine if insecticide concentration and distribution were effective at killing the target pest Asian citrus psyllids (ACP). Sample discs attached to leaves were sprayed with imidacloprid and malathion at a field site in Florida. Application method, canopy height and depth, cardinal side of tree, and leaf side were considered to assess the spatial distribution of insecticides throughout citrus trees. Furthermore, ACP were inspected before and after insecticide applications to quantify psyllid population response. RESULTS Our findings show that although insecticide concentrations were high enough to kill ACP, the spatial distribution of insecticides throughout individual trees was highly variable and live ACP were detected after insecticide application. The top side of leaves received significantly more insecticide than the underside of leaves. Additionally, inadequate distribution to different areas of the tree canopy was observed for all application methods tested (aerial, ground speed‐sprayer, and ground side‐sprayer). Inspections of ACP populations before and after insecticide applications resulted in reductions of 85% (malathion) and 48–80% (imidacloprid). CONCLUSIONS The variability in insecticide spatial distribution due to application method allows remaining ACP to continue spreading citrus greening disease to unprotected trees. Further research is needed to improve insecticide application methods and technology for citrus trees in order to implement effective pest management strategies and fully target ACP to eliminate HLB. © 2020 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quantification of insecticide spatial distribution within individual citrus trees and efficacy through Asian citrus psyllid reductions under different application methods

Rehberg

Trivedi

Bahureksa

et al. 2020

Pest Management Science

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“…Citrus, grape, and olive industries have been seriously affected by these bacterial vector-borne pathogens in recent decades. Huanglongbing disease (HLB) caused by Candidatus Liberibacter asiaticus(CLas)isthe mostdamaging disease of citrus, resulting in estimated losses of over $7.8 billion in Florida since 2007 ( Court et al, 2018 ), and the phytoplasma disease lime witches’ broom threatens the lime industry in the Middle East ( Donkersley et al, 2018 ). Moreover, coconut phytoplasmas have destroyed millions of palms for centuries and are spreading locally ( Gurr et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Bacterial Vector-Borne Plant Diseases: Unanswered Questions and Future Directions

et al. 2020

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Vector-borne plant diseases have significant ecological and economic impacts, affecting farm profitability and forest composition throughout the world. Bacterial vector-borne pathogens have evolved sophisticated strategies to interact with their hemipteran insect vectors and plant hosts. These pathogens reside inplant vascular tissue, and their study represents an excellent opportunity to uncover novel biological mechanisms regulating intracellular pathogenesis and to contribute to the control of some of the world’s most invasive emerging diseases. In this perspective, we highlight recent advances and major unanswered questions in the realm of bacterial vector-borne disease, focusing on liberibacters, phytoplasmas, spiroplasmas, and Xylella fastidiosa .

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“…Trees infected with "Ca. L. asiaticus" are short-lived, have reduced yields, and produce smaller, lopsided fruit with poor quality juice [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

The Chorion Proteome of Diaphorina citri, the Vector of Huanglongbing Disease in Citrus

Santos‐Ortega

Killiny

2021

Insects

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Nowadays, the Asian citrus psyllid, Diaphorina citri (Kuwayama) (Hemiptera: Liviidae) is considered the most devastating pest of citrus because it transmits “Candidatus Liberibacter asiaticus”, the putative causal agent of huanglongbing (HLB) or citrus greening. Controlling the vector is the main strategy used to mitigate HLB. Targeting D. citri at the very early stages of its development may offer an effective control strategy. Identifying chorion proteins will contribute to a better understanding of embryo development and egg hatching and thus could lead to valuable targets to better control psyllid populations. Herein, we analyze the chorion proteins of D. citri. Mass spectrometry-based bottom-up/shotgun proteomics and databases were queried to achieve protein identification. Fifty-one proteins were identified in D. citri chorion. The D. citri chorion proteins were divided into eight categories according to their biological or molecular function: i—enzymes (25%); ii—binding proteins (10%); iii—structural proteins (8%); iv—homeostasis-related proteins, mostly vitellogenins (8%); v—proteins related to gene expression (6%); vi—immune system proteins (6%); vii—other proteins (16%); and viii—uncharacterized proteins (21%). The composition of the chorion proteome suggested that the hatching rate could be reduced by silencing chorion-related genes. The proteomic analysis of D. citri chorion tissue allowed us to identify its proteins, providing promising new targets for D. citri control through RNA interference technology.

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Economic Contributions of the Florida Citrus Industry in 2015-16

Cited by 23 publications

References 0 publications

Quantification of insecticide spatial distribution within individual citrus trees and efficacy through Asian citrus psyllid reductions under different application methods

Quantification of insecticide spatial distribution within individual citrus trees and efficacy through Asian citrus psyllid reductions under different application methods

Bacterial Vector-Borne Plant Diseases: Unanswered Questions and Future Directions

The Chorion Proteome of Diaphorina citri, the Vector of Huanglongbing Disease in Citrus

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