aster yellows
noun plural Date: 1922 a widespread disease affecting more than 40 families of plants, characterized especially by yellowing and stunting, and caused by a phytoplasma transmitted by leafhoppers

New Collegiate Dictionary. 2001.

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  • Aster yellows — is a disease caused by a phytoplasma (Aster Yellows Phytoplasma) [Bai et al. Living with genome instability: the adaptation of phytoplasmas to diverse environments of their insect and plant hosts. J. Bacteriol. 2006 May;188(10):3682 96.]… …   Wikipedia

  • aster yellows — noun plural : a widespread virus disease of the aster and many other plants characterized by yellowing and dwarfing and a greenish tinge to the flower heads and transmitted by leafhoppers * * * Plant Pathol. a dwarfing and yellowing of asters and …   Useful english dictionary

  • aster yellows — Plant Pathol. a dwarfing and yellowing of asters and various other plants, caused by a mycoplasma transmitted by a leafhopper. [1920 25] * * * ▪ disease       plant disease once thought to be caused by a virus but now believed to be of… …   Universalium

  • yellows — /ˈjɛloʊz/ (say yelohz) noun 1. Botany any of various plant diseases such as peach yellows, cabbage yellows, and aster yellows, whose most prominent symptom is a loss of green pigment in the leaves. 2. jaundice, especially in animals. 3. Obsolete… …   Australian English dictionary

  • Jaunisse de l'aster — La jaunisse de l aster (en anglais Aster yellows) est une maladie des plantes chronique et systémique provoquée par un micro organisme semblable à une bactérie appelé phytoplasme[1]. Cette maladie est largement répandue en Amérique en Europe et… …   Wikipédia en Français

  • asteryellows — aster yellows pl.n. (used with a sing. verb) A widespread disease of plants caused by a mycoplasma, usually resulting in stunted growth and yellowing of infected individuals. * * * …   Universalium

  • Phytoplasma — Phyllody induced by phytoplasma infection on a coneflower (Echinacea purpurea). Scientific classification Division …   Wikipedia

  • Plant disease symptoms — ▪ Table Plant disease symptoms description and causes examples prenecrotic symptom expression that precedes the death of cells or the disintegration of tissues water soaking a water soaked, translucent condition of tissues caused by water moving… …   Universalium

  • List of spinach diseases — This article is a list of diseases of spinach (Spinacia oleracea). Contents 1 Bacterial diseases 2 Fungal diseases 3 Nematodes, parasitic 4 Viral diseases …   Wikipedia

  • List of barley diseases — This article is a list of diseases of barley (Hordeum vulgare). Contents 1 Bacterial diseases 2 Nematodes, parasitic 3 Virus, viroid and virus like diseases 4 …   Wikipedia

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