Biology:Bacterial leaf scorch

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Short description: Bacterial disease of plants
Bacterial leaf scorch
2013-05-04 14 07 38 Large Pin Oak (Quercus palustris) stricken with bacterial leaf scorch during leaf-out near the house at 988 Terrace Boulevard in Ewing, New Jersey.JPG
Large pin oak (Quercus palustris) stricken with bacterial leaf scorch during leaf-out
Common namesBLS
Causal agentsXylella fastidiosa
Hoststrees and crops
Vectorsleafhoppers

Bacterial leaf scorch (commonly abbreviated BLS, also called bacterial leaf spot) is a disease state affecting many crops, caused mainly by the xylem-plugging bacterium Xylella fastidiosa.[1] It can be mistaken for ordinary leaf scorch caused by cultural practices such as over-fertilization.[1]

Hosts

BLS can be found on a wide variety of hosts, ranging from ornamental trees (elm, maple, oak) and shrubs, to crop species including blueberry and almond.[citation needed]

Bacterial spot of peppers and tomatoes

Bacterial spot of peppers and tomatoes is caused by the bacteria Xanthomonas campestris pv. vesicatoria.[citation needed]

Bacterial spot of peaches

Bacterial spot of peaches is caused by the bacteria Xanthomonas campestris pv. pruni. Spots may form on the leaves and they can be mistaken for peach scab, which is caused by a fungus.[citation needed]

Bacterial spot of pecans

Main page: Biology:Pecan bacterial leaf scorch

Symptoms

An irregular browning leaf margin which may or may not be bordered by a pale halo.[2]

Symptoms re-occur every year, spreading throughout the tree crown, eventually killing the host plant.[2]

Vectors

Xylem-feeding leafhoppers can transmit the disease bacteria.[2]

Treatment

There are no known effective treatments for BLS, consequently, removal of affected plants is recommended.[2]

See also

References

External links