Dictionary.com
definitions
  • synonyms

phytoplasma

[fī′tə-plăzmə]
  1. Any of a group of extremely small bacteria that are similar to mycoplasmas in that they have a cell membrane instead of cell walls and can assume a variety of shapes, but are parasitic solely in plants. In many plants, phytoplasmas invade cells of the food-carrying tissue known as phloem and are usually spread by plant-sucking insects, such as the leafhopper, which draws its food from phloem. Phytoplasmas cause some 200 plant diseases affecting several hundred genera of plants. See also mycoplasma.
Show More
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.