Bacterial leaf stripe on wheat
Exudate produced by bacterial leaf stripe on wheat. Under humid conditions, lesions on leaves may produce droplets of sticky, yellowish, honey-like exudate. If undisturbed, these harden into granules that stud the surface of the lesion and are easily detachable. With dew or rain the droplets coalesce to form conspicuous milky drops that may spread over the leaf surface and dry as a thin, grayish, almost transparent film or flakes.
The disease is caused by Xanthomonas translucens. Wheat is mainly affected by the pathovar X. translucens pv. undulosa, and occasionally by X. translucens pv. cerealis. The same pathogen also causes black chaff.
For more information, see CIMMYT's Wheat Doctor: wheatdoctor.cimmyt.org/index.php?option=com_content&t....
Photo credit: CIMMYT.
Bacterial leaf stripe on wheat
Exudate produced by bacterial leaf stripe on wheat. Under humid conditions, lesions on leaves may produce droplets of sticky, yellowish, honey-like exudate. If undisturbed, these harden into granules that stud the surface of the lesion and are easily detachable. With dew or rain the droplets coalesce to form conspicuous milky drops that may spread over the leaf surface and dry as a thin, grayish, almost transparent film or flakes.
The disease is caused by Xanthomonas translucens. Wheat is mainly affected by the pathovar X. translucens pv. undulosa, and occasionally by X. translucens pv. cerealis. The same pathogen also causes black chaff.
For more information, see CIMMYT's Wheat Doctor: wheatdoctor.cimmyt.org/index.php?option=com_content&t....
Photo credit: CIMMYT.