The Plant Pathology Journal 2011;27(2):103-109.
Published online June 30, 2011.
Regulation of Pathogenesis by Light in Cercospora zeae-maydis: An Updated Perspective
Hun Kim, John B. Ridenour, Larry D. Dunkle, Burton H. Bluhm
Abstract
The fungal genus Cercospora is one of the most ubiquitous groups of plant pathogenic fungi, and gray leaf spot caused by C. zeae-maydis is one of the most widespread and damaging foliar diseases of maize in the world. While light has been implicated as a critical environmental regulator of pathogenesis in C. zeae-maydis, the relationship between light and the development of disease is not fully understood. Recent discoveries have provided new insights into how light influences pathogenesis and morphogenesis in C. zeae-maydis, particularly at the molecular level. This review is focused on integrating old and new information to provide an updated perspective of how light influences pathogenesis, and provides a working model to explain some of the underlying molecular mechanisms. Ultimately, a thorough molecular-level understanding of how light regulates pathogenesis will augment efforts to manage gray leaf spot by improving host resistance and disease management strategies.
Key Words: Cercospora, photoreceptor, stomatal tropism
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