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http://dx.doi.org/10.11626/KJEB.2019.37.4.493

Identification of novel genes for improvement of downy mildew resistance in Zea mays  

Min, Kyeong Do (Department of Plant Resources, College of Industrial Science, Kongju National University)
Kim, Hyo Chul (Department of Life Science, Dongguk University-Seoul)
Kim, Kyung-Hee (Department of Life Science, Dongguk University-Seoul)
Moon, Jun-Cheol (Agriculture and Life Sciences Research Institute, Kangwon National University)
Lee, Byung-Moo (Department of Life Science, Dongguk University-Seoul)
Kim, Jae Yoon (Department of Plant Resources, College of Industrial Science, Kongju National University)
Publication Information
Korean Journal of Environmental Biology / v.37, no.4, 2019 , pp. 493-502 More about this Journal
Abstract
Maize (Zea mays L.) is a C4-plant and one of the three major crops grown worldwide. Because of its high productivity, maize is considered as one of the most important food and feed stocks in the world. Recently, bioethanol from maize was predominantly generated in the USA and Brazil. Infection of maize by several diseases resulted in a huge disaster and prevented maize production. Downy mildew, caused by Peronosclerospora sorghi, is one of the most serious diseases of maize. Despite efforts to develop downy mildew-resistant cultivars or seed treatment with metalaxyl, downy mildew persists as a serious pathogen and is still prevalent in specific geographical locations. Analysis of soils infected with downy mildew and investigation of candidates associated with downy mildew resistance is an attractive method to overcome downy mildew damage in maize. In a previous study, we reported that maize chromosome 6 carries a possible candidate gene for downy mildew resistance. Using bioinformatics tools and RT-PCR analysis, five novel genes including bZIP, OFP transcription factor, and Ppr were identified as candidate genes associated with downy mildew resistance.
Keywords
Zea mays; downy mildew; disease resistance; candidate gene;
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