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Alexander H. Purcell
Researcher at University of California, Berkeley
Publications - 89
Citations - 7705
Alexander H. Purcell is an academic researcher from University of California, Berkeley. The author has contributed to research in topics: Xylella fastidiosa & Sharpshooter (insect). The author has an hindex of 42, co-authored 85 publications receiving 7089 citations.
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Facultative bacterial endosymbionts benefit pea aphids Acyrthosiphon pisum under heat stress
TL;DR: Natural populations of pea aphids in California contain at least two facultative bacterial secondary symbionts (pea aphidsecondary symbiont, PASS, or pea Aphid rickettsia, PAR) in a range of frequencies throughout the state.
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The biology of xylem fluid-feeding insect vectors of Xylella fastidiosa and their relation to disease epidemiology.
Richard A. Redak,Alexander H. Purcell,João Roberto Spotti Lopes,Matthew J. Blua,Russell F. Mizell,Peter C. Andersen +5 more
TL;DR: Two Xylella diseases, citrus variegated chlorosis (CVC) and Pierce's disease of grapevines, have emerged as important issues within the past decade and are discussed.
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Xylella fastidiosa: Cause of Pierce's Disease of Grapevine and Other Emergent Diseases.
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Fastidious xylem-limited bacterial plant pathogens
TL;DR: Molecular and genetic comparisons of strains of XLB lag behind progress being made for many other plant-pathogenic bacteria, but such studies are needed to answer important questions: how do XLB move from cell to cell within plants?
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Fitness effects of two facultative endosymbiotic bacteria on the pea aphid, Acyrthosiphon pisum, and the blue alfalfa aphid, A. kondoi
TL;DR: Alate production in pea aphids was significantly increased in large populations of two PASS‐ and PAR‐positive subclones relative to their parent clones, and this ameliorative effect of facultative bacteria at 25 °C was not found for two other sets of parent clones and their derived sub clones.