@article{paul_ostermann_chen_saville_yang_gu_whitfield_ristaino_wei_2021, title={Integrated microneedle-smartphone nucleic acid amplification platform for in-field diagnosis of plant diseases}, volume={187}, ISSN={["1873-4235"]}, url={https://doi.org/10.1016/j.bios.2021.113312}, DOI={10.1016/j.bios.2021.113312}, abstractNote={We demonstrate an integrated microneedle (MN)-smartphone nucleic acid amplification platform for "sample-to-answer" diagnosis of multiplexed plant pathogens within 30 min. This portable system consists of a polymeric MN patch for rapid nucleic acid extraction within a minute and a 3D-printed smartphone imaging device for loop-mediated isothermal amplification (LAMP) reaction and detection. We expanded the extraction of the MN technology for DNA targets as in the previous study (ACS Nano, 2019, 13, 6540–6549) to more fragile RNA biomarkers, evaluated the storability of the extracted nucleic acid samples on MN surfaces, and developed a smartphone-based LAMP amplification and fluorescent reader device that can quantify four LAMP reactions on the same chip. In addition, we have found that the MN patch containing as few as a single needle tip successfully extracted enough RNA for RT-PCR or RT-LAMP analysis. Moreover, MN-extracted RNA samples remained stable on MN surfaces for up to three days. The MN-smartphone platform has been used to detect both Phytophthora infestans DNA and tomato spotted wilt virus (TSWV) RNA down to 1 pg, comparable to the results from a benchtop thermal cycler. Finally, multiplexed detection of P. infestans and TSWV through a single extraction from infected tomato leaves and amplification on the smartphone without benchtop equipment was demonstrated.}, journal={BIOSENSORS & BIOELECTRONICS}, publisher={Elsevier BV}, author={Paul, Rajesh and Ostermann, Emily and Chen, Yuting and Saville, Amanda C. and Yang, Yuming and Gu, Zhen and Whitfield, Anna E. and Ristaino, Jean B. and Wei, Qingshan}, year={2021}, month={Sep} }
 @article{badillo-vargas_chen_martin_rotenberg_whitfield_2019, title={Discovery of Novel Thrips Vector Proteins That Bind to the Viral Attachment Protein of the Plant Bunyavirus Tomato Spotted Wilt Virus}, volume={93}, ISSN={["1098-5514"]}, url={https://doi.org/10.1101/416560}, DOI={10.1128/JVI.00699-19}, abstractNote={
            Thrips-transmitted viruses cause devastating losses to numerous food crops worldwide. For negative-sense RNA viruses that infect plants, the arthropod serves as a host as well by supporting virus replication in specific tissues and organs of the vector. The goal of this work was to identify thrips proteins that bind directly to the viral attachment protein and thus may play a role in the infection cycle in the insect. Using the model plant bunyavirus tomato spotted wilt virus (TSWV), and the most efficient thrips vector, we identified and validated six TSWV-interacting proteins from
            Frankliniella occidentalis
            first-instar larvae. Two proteins, an endocuticle structural glycoprotein and cyclophilin, were able to interact directly with the TSWV attachment protein, G
            N
            , in insect cells. The TSWV G
            N
            -interacting proteins provide new targets for disrupting the viral disease cycle in the arthropod vector and could be putative determinants of vector competence.
          }, number={21}, journal={Journal of Virology}, author={Badillo-Vargas, I.E. and Chen, Y. and Martin, K.M. and Rotenberg, D. and Whitfield, A.E.}, year={2019}, pages={e00699–19} }
 @article{chen_dessau_rotenberg_rasmussen_whitfield_2019, title={Entry of bunyaviruses into plants and vectors}, volume={104}, ISBN={["978-0-12-818394-6"]}, ISSN={["1557-8399"]}, DOI={10.1016/bs.aivir.2019.07.001}, abstractNote={The majority of plant-infecting viruses are transmitted by arthropod vectors that deliver them directly into a living plant cell. There are diverse mechanisms of transmission ranging from direct binding to the insect stylet (non-persistent transmission) to persistent-propagative transmission in which the virus replicates in the insect vector. Despite this diversity in interactions, most arthropods that serve as efficient vectors have feeding strategies that enable them to deliver the virus into the plant cell without extensive damage to the plant and thus effectively inoculate the plant. As such, the primary virus entry mechanism for plant viruses is mediated by the biological vector. Remarkably, viruses that are transmitted in a propagative manner (bunyaviruses, rhabdoviruses, and reoviruses) have developed an ability to replicate in hosts from two kingdoms. Viruses in the order Bunyavirales are of emerging importance and with the advent of new sequencing technologies, we are getting unprecedented glimpses into the diversity of these viruses. Plant-infecting bunyaviruses are transmitted in a persistent, propagative manner must enter two unique types of host cells, plant and insect. In the insect phase of the virus life cycle, the propagative viruses likely use typical cellular entry strategies to traverse cell membranes. In this review, we highlight the transmission and entry strategies of three genera of plant-infecting bunyaviruses: orthotospoviruses, tenuiviruses, and emaraviruses.}, journal={VIRUS ENTRY}, author={Chen, Yuting and Dessau, Moshe and Rotenberg, Dorith and Rasmussen, David A. and Whitfield, Anna E.}, year={2019}, pages={65–96} }