384 results match your criteria: "Tropical Research and Education Center[Affiliation]"

The flat mite, Brevipalpus yothersi (Baker, 1949) is widely distributed in the southern United States. This mite is associated with a citrus leprosis virus ((CiLV-C2) Cilevirus colombiaense strain hibiscus) infecting ornamental hibiscus (Hibiscus rosa-sinensis) in Florida and Hawaii. Because hibiscus is a highly traded ornamental plant, CiLV-C2 has the potential to spread.

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The flat mite Tenuipalpus uvae De Leon (Acari: Tenuipalpidae): descriptions of all stages, ontogeny of setae and morphometric analysis.

Zootaxa

July 2024

Programa de Pós-Graduação em Produção Vegetal; Universidade Estadual de Santa Cruz (UESC); Rodovia Jorge Amado km 16; Ilhéus; BA; 45662-900; Brazil.

Article Synopsis
  • - The flat mite species Tenuipalpus uvae, found in the Americas, is redescribed using both older and newly collected specimens from Florida and Brazil, revealing more details about its morphology, including new descriptions for various life stages.
  • - Three key distinguishing features were identified: a shorter seta v2, the serrated, rodlike sc1-2, and specific characteristics of the leg tibiae, which help differentiate T. uvae from other mites.
  • - Notable variations in dorsal surface morphology were observed, particularly in the Florida population, indicating potential influences from aging, environmental factors, or host relationships, suggesting that further research is necessary to understand these differences.
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causes rachis blight on coconut palms ( L.) in Florida.

Plant Dis

December 2024

University of Florida, Department of Plant Pathology, 3205 College Ave, Fort Lauderdale Research and Education Center, Davie, Florida, United States, 33314.

, a genus in the family Botryosphaeriaceae, has a broad host range and causes dieback, root rot, fruit rot, leaf rot, and blights in many plant species across sub-tropical and tropical geographical areas (Alves et al., 2008). In palms, this fungal pathogen is known to cause fruit and heart rot, wood decay and leaf blight around the globe (Atallah et al.

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Epigenetic modulation of fungal pathogens: a focus on .

Front Microbiol

October 2024

Department of Plant Pathology, Citrus Research and Education Center, University of Florida, IFAS, Lake Alfred, FL, United States.

Epigenetics has emerged as a potent field of study for understanding the factors influencing the effectiveness of human disease treatments and for identifying alternations induced by pathogens in host plants. However, there has been a paucity of research on the epigenetic control of the proliferation and pathogenicity of fungal plant pathogens. Fungal plant pathogens such as , a significant threat to global rice production, provide an important model for exploring how epigenetic mechanisms govern fungal proliferation and virulence.

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Polysaccharides from Ziziphus jujuba prolong lifespan and attenuate oxidative stress in Caenorhabditis elegans via DAF-16 and SKN-1.

Int J Biol Macromol

December 2024

Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China; Shandong Huayang Technology Co., Ltd., Tai'an, Shandong 271411, China. Electronic address:

Jujube is a commonly consumed traditional Chinese medicinal food. Recent evidence revealed crude polysaccharides of jujube extract (CPJE) exhibited bioactive properties in vitro; however, its antioxidant capacity in vivo remains unknown. The objectives of this study were to evaluate the effects of CPJE on growth, locomotion, reproduction, lifespan, and antioxidant defense system using Caenorhabditis elegans.

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A sustainable lignin-clay nano-absorbent for highly efficient methylene blue removal.

Int J Biol Macromol

December 2024

Agricultural and Biological Engineering, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA; School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30318, USA. Electronic address:

Water pollution caused by toxic dyes such as methylene blue (MB) has become a bottleneck for recycling or reusing enormous industrial wastewater. Designing a green and cost-effective bio-absorbent for the highly efficient removal of MB from wastewater is crucial but remains a great challenge. In this study, abundant, inexpensive, and environmentally benign lignin and bentonite were used as starting materials, and quaternary and amphiphilic lignin as a network macromolecule was designed to be inserted into the galleries of the stacked bentonite clay to prepare lignin-bentonite nanohybrids.

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Bacterial spot of tomato (BST), caused by Xanthomonas perforans, is an economically important disease of tomatoes in Florida. Due to the heavy reliance on copper-based bactericides for control of BST, copper-resistant strains of X. perforans are widely distributed in Florida, leading to reduced efficacy of copper-based bactericides for disease control.

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Since 2015, Hood has emerged as the main pest of strawberries in Florida. Given the limited management options, there is a recognized need to expand on the management strategies for this pest. Therefore, we explored the possibility of using banker plants to recruit naturally occurring predators of thrips into strawberry fields to suppress .

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Article Synopsis
  • * A study evaluated the effects of various insecticides on the survival, feeding, and reproduction of three predatory mites, revealing that spinetoram had the most severe impact while C. javanica had the least.
  • * Overall, all insecticides reduced predator survival and feeding, with low predation on S. dorsalis, suggesting that using entomopathogenic fungi alongside predatory mites may be a viable approach for managing these pests in strawberries.
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  • Selecting the right rootstock is essential for fruit production and stress management in orchards, and this study focused on two types ('Flordaguard' and 'MP-29') under varying oxygen levels and temperature conditions.
  • The study assessed several physiological properties, like photosynthesis and transpiration, as well as biochemical responses including antioxidant activity and nutrient content in the leaves.
  • Results showed that 'MP-29' outperformed 'Flordaguard' in both physiological and biochemical responses when subjected to high temperatures and low oxygen conditions, indicating its superior resilience to adverse environmental conditions.
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Article Synopsis
  • Insect vectors pose a major threat to global agriculture by spreading plant viruses, with current control methods, including insecticides and genetic engineering, failing to provide complete protection.
  • Recent advancements in genomic technologies have produced genomes and transcriptomes of insect vectors, but a lack of understanding of gene functions limits the effectiveness of new control strategies.
  • RNA interference (RNAi) has been used to study gene functions, but its inconsistency makes it less reliable, while genome editing shows promise as a more effective tool to explore virus-vector interactions and improve vector management, despite challenges in editing target genes.
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Perspicacious insights into plant-virus-vector interactions applying omics.

BMC Genomics

September 2024

Advanced Centre for Plant Virology, Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, 11012, India.

Transmission of plant viruses by insect vectors is facilitated by unequivocal tri-partite interactions among host plants, viruses, and associated vectors. The advent of next-generation sequencing including whole genome sequencing, RNA/small RNA sequencing, proteomics, and metabolomics aided in elucidating the molecular mechanisms involved in virus transmission by insect vectors and infection in host plants.

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Integrated Metabolomics and Proteomics Analysis Provides Insights into the Formation of Volatile Compounds in Three Different Polyembryonic Mango Cultivars.

J Agric Food Chem

September 2024

Citrus Research & Education Center, Institute of Food and Agricultural Sciences, University of Florida, Lake Alfred, Florida 33850-2299, United States.

Understanding volatile compound formation is critical for enhancing the flavor quality of mangoes. Integrated untargeted metabolomics and proteomics were employed to explore volatile compound formation in three different polyembryonic mango cultivars ("Ah Ping," "Rosa," and "Rosigold"). A total of 87 volatile compounds were identified using SPME-GC-MS.

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Article Synopsis
  • The study investigates the distribution of the pepper weevil, an important pest affecting pepper crops, in Miami Dade County, Florida.
  • Researchers used 144 sample points across seven fields and applied three geospatial techniques to analyze the infestation patterns.
  • Findings show that the pepper weevil tends to cluster in specific areas, with this aggregation becoming more uniform over the growing season.
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Article Synopsis
  • The study examines how the age of the pepper weevil affects its reproductive success and overall impact on pepper crops, which are severely damaged by this pest.
  • Researchers collected infested fruit to observe the emergence of weevil adults at different ages (10, 20, and 30 days), and analyzed various reproductive metrics including egg production and hatching rates in a controlled lab setting.
  • Findings indicate younger weevils (10 days old) had higher egg counts and hatching success, while older weevils (30 days old) showed lower reproduction rates, highlighting the importance of understanding weevil age for effective pest management strategies among pepper growers.
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Laurel wilt (LW), a lethal vascular disease caused by the ambrosia fungus , has severely reduced avocado ( Mill.) production in Florida and decimated populations of native lauraceous trees across twelve U.S.

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Enhancing the SWAT model for creating efficient rainwater harvesting and reuse strategies to improve water resources management.

J Environ Manage

August 2024

Department of Environmental and Sustainable Engineering, University at Albany, State University of New York, 1400 Washington Avenue, Albany, NY, 12222, USA.

Rain barrels/cisterns are a type of green infrastructure (GI) practice that can help restore urban hydrology. Roof runoff captured and stored by rain barrels/cisterns can serve as a valuable resource for landscape irrigation, which would reduce municipal water usage and decrease runoff that other stormwater infrastructures need to treat. The expected benefits of rainwater harvesting and reuse with rain barrels/cisterns are comprehensive but neither systematically investigated nor well documented.

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First Gynogenesis of for Haploid Production and Ploidy Verification Protocol.

Plants (Basel)

June 2024

Plant Breeding Graduate Program, Tropical Research and Education Center, University of Florida, 18905 S.W. 280 Street, Homestead, FL 33031, USA.

Vanilla orchids are members of the Vanilloideae orchid subfamily, and they hold significant economic value as a spice crop in tropical regions. Despite the presence of 180 known species within this subfamily, commercial production focuses on only three species (, , and ) and one hybrid (), prized for their aromatic qualities and bioactive compounds. Limited modern breeding initiatives have been undertaken with vanilla orchids, although recent advancements in genomic research are shedding light on this crop's potential.

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While hydroponics is considered an efficient vegetable production system, there is a compelling need to investigate the efficiency of the current generic nutrient dosing recommendation primarily based on electrical conductivity (EC) measurements. Such information is critical to fine-tune and optimize the current hydroponic management practices for improved nutrient uptake efficiency. This study investigated the dynamics of some micro and macronutrients (N, P, Ca, Mg, K, Fe, and Mn) in a recirculating nutrient film technique (NFT) hydroponic system under lettuce cultivation.

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Spatialization and analysis of the gross domestic product of second and tertiary industries (GDP) can effectively depict the socioeconomic status of regional development. However, existing studies mainly conduct GDP spatialization using nighttime light data; few studies specifically concentrated on the spatialization and analysis of GDP in a built-up area by combining multi-source remote sensing images. In this study, the NPP-VIIRS-like dataset and Sentinel-2 multi-spectral remote sensing images in six years were combined to precisely spatialize and analyze the variation patterns of the GDP in the built-up area of Zibo city, China.

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Edamame ( (L.) Merr.), a specialty soybean prized for its nutritional value and taste, has witnessed a surge in demand within the U.

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Florida's strawberry industry is currently valued at $511 million annually but faces challenges from pathogens and arthropod pests especially Tetranychus urticae Koch (twospotted spider mite) and Scirtothrips dorsalis Hood (chilli thrips). Predatory mites, particularly Neoseiulus cucumeris Oudemans, Neoseiulus californicus McGregor, and Amblyseius swirskii Athias-Henriot, play a crucial role in pest management. However, there are concerns regarding how these biological control agents are affected by fungicides used in current pathogen management strategies.

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Spatiotemporal assessment of pathogenic in subtropical coastal watersheds.

J Water Health

May 2024

Department of Biological and Environmental Sciences, Georgia College and State University, Campus Box 81, Milledgeville, GA 31061, USA.

The World Health Organization classifies leptospirosis as a significant public health concern, predominantly affecting impoverished and unsanitary regions. By using the Pensacola Bay System as a case study, this study examines the underappreciated susceptibility of developed subtropical coastal ecosystems such as the Pensacola Bay System to neglected zoonotic pathogens such as . We analyzed 132 water samples collected over 12 months from 44 distinct locations with high levels of (>410 most probable number/100 mL).

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Article Synopsis
  • Essential oil-based products, like thyme and savory oil, are being studied as alternatives to copper fungicides for controlling diseases in organic mango orchards.
  • In laboratory tests, thyme and savory oils showed fungicidal effects, while tea tree oil was ineffective.
  • However, in real-world applications, none of the oils successfully prevented anthracnose, and copper hydroxide was still the most effective option, highlighting the limitations of essential oils for this purpose.
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Article Synopsis
  • The hibiscus bud weevil (HBW) poses a serious threat to tropical hibiscus in Florida since its invasion in 2017, making early detection vital.
  • This study investigates the effectiveness of using pheromone lures, previously successful for other pests, in attracting HBW, testing various trap types, colors, and lure sizes.
  • Results show yellow sticky traps with cranberry weevil lures are particularly effective for capturing HBW, but further research is needed to confirm the lure's overall efficiency.
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