SIGN UP LOG IN

The largest wine encyclopedia in the world

22.743 Keywords • 48.611 Synonyms • 5.293 Translations • 7.912 Pronunciations • 150.111 Cross-references

0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

phytoplasmas

Plant parasitic microorganisms (formerly Mycoplasma-like organisms), which were renamed phytoplasmas (phyto = plant) in 1994 to differentiate them from animal parasitic mycoplasmas. They are the bacteria similar, but in contrast to these have no cell walls, but are surrounded only by a flexible cell membrane. Therefore, their shape is irregular and may be oval, oblong or multifarious. In contrast to virus are they capable of self-sufficient reproduction? They are so tiny that they can no longer be perceived in the light microspop. This organism group was first established in 1967 in connection with the causes research of yellowing diseases Xylem (Phloem) discovered by plants.

Phytoplasmas - Blackwood Disease by Stolbur Virus

Phytoplasmas colonize the sieve tubes and the cells adjacent to the phloem. In the host plants, they cause abnormal and terminally fatal changes. These are yellowing, shoot shortening, leaf deformation and broom growth, In some plant species they enlarge the flowers, these take on the shape of leaves. Phytoplasmas are caused by insects such as cicadas transfer. This will cause different vine diseases like Flavescence dorée (Golden yellowing yellowing), Blackwood's disease (by the type Stolbur), grapes wilt and yellowing (Grapevine yellows) caused. Phytoplasmas are classified as quarantine organisms due to their hazardous nature in the EU. They are quite successfully fought with hot water. See also a complete list of all diseases and pests below Vine enemies,

Image: Public domain, Link

World's largest wine knowledge database, made with by our author Norbert Tischelmayer.

About the Glossary

Calendar EVENTS NEAR YOU

Privacy Notice: ×

Cookies facilitate the provision of our services. By using our services, you agree that we use cookies.