Lettuce Downy Mildew. Lettuce downy mildew is readily recognized by the white sporulation on the undersides of leaves. Oomycetes are known to use a diverse arsenal of secreted proteins (effectors) to manipulate their hosts.

Downy Mildew Research to Benefit Lettuce Growers and
Downy Mildew Research to Benefit Lettuce Growers and from caes.ucdavis.edu

Downy mildew is a foliar disease of lettuce that impacts the crop’s yield and quality. Many growers struggle with controlling the disease on lettuce crops grown in protected environments, especially during the fall and winter months. What is lettuce downy mildew?

If You’ve Ever Noticed Light Green Or Yellowish, Angular Spots On Your Lettuce Leaves, That Could Be A Symptom Of Downy Mildew.


113 rows bremia lactucae (downy mildew of lettuce); Lettuce leaves with brown spots are not appealing to eat. In addition to losses in the field, downy mildew’s impact is accompanied by significant postharvest losses.

Oomycetes Are Known To Use A Diverse Arsenal Of Secreted Proteins (Effectors) To Manipulate Their Hosts.


However, when growing lettuce in a protected setting during the colder months, downy mildew can affect the yield and quality of lettuce. Downy mildew can affect lettuce at any stage of growth. This is a common disease on both greenhouse and outdoor lettuces.

Downy Mildew Is A Foliar Disease Of Lettuce That Impacts The Crop’s Yield And Quality.


What is lettuce downy mildew? In addition to losses observed in the field, downy mildew’s impact is accompanied by significant postharvest losses. 55 rows if downy mildew infects the cotyledons of young seedlings, the plants can die.

Although The Incidence Of Disease Is Higher In Cool Humid Areas, It Can Occur Even In Desert Production Areas If Conditions Are Favorable.


Downy mildew is a major disease in lettuce production systems worldwide. As part of our investigation of disease resistance in lettuce, we generated mutants that have lost resistance to bremia lactucae, the casual fungus of downy mildew. Lettuce downy mildew is an important disease capable of causing the rapid destruction of the plant.

Bremia Lactucae (Downy Mildew Of Lettuce);


Crop losses are common and the spores that cause it can spread over long distances. Lettuce downy mildew is caused by the fungus bremia lactucae, which is the class of relatively primitive fungi known as the oomycetes. What is lettuce downy mildew?

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