In wheat, major yield losses are caused by a variety of diseases including rusts, spike diseases, leaf spot and root diseases. The genetics of resistance against all these diseases have been studied in great detail and utilized for breeding resistant cultivars. The resistance against leaf spot diseases caused by each individual necrotroph/hemi-biotroph involves a complex system involving resistance (R) genes, sensitivity (S) genes, small secreted protein (SSP) genes and quantitative resistance loci (QRLs). This review deals with resistance for the following four-leaf spot diseases: (i) Septoria nodorum blotch (SNB) caused by ; (ii) Tan spot (TS) caused by -; (iii) Spot blotch (SB) caused by and (iv) Septoria tritici blotch (STB) caused by .
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http://dx.doi.org/10.3389/fpls.2023.1023824 | DOI Listing |
Plant Dis
January 2025
Guizhou University, Guizhou University, Guiyang, Guiyang, Guizhou, China, 550025;
During a field study in the Baili Azalea Forest Area in Guizhou Province, China (27°12'N, 105°48'E) between May and July 2023, symptoms of leaf spot were observed on Franch. The incidence of leaf spot on leaves was about 12% in a field of 1 hm2, significantly reducing their ornamental and economic value. The affected leaves bore irregular, grey-white lesions with distinct dark brown borders, accompanied by black conidiomata.
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January 2025
Institute for Biosecurity and Microbial Forensics (IBMF), Oklahoma State University, Stillwater, OK, USA.
Exclusion is a keystone of integrated pest management to prevent the introduction of pathogens. U.S.
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January 2025
Jiangxi Agricultural University, College of Agriculture, Nanchang, Jiangxi, China;
is a large cosmopolitan genus of plant pathogenic fungi that are commonly associated with leaf and fruit spots as well as blights on a wide range of plant hosts. is a member of this genus, causing sooty spot on kiwifruit worldwide. With the expansion of kiwifruit cultivation, the incidence of sooty spot has become severe in Fengxin County, Jiangxi Province, China.
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January 2025
USDA-ARS , Ithaca, United States.
Sci Rep
January 2025
USDA-ARS National Peanut Research Laboratory, 1011 Forrester Dr. S.E, 39842, Dawson, GA, USA.
Cercosporidium personatum (CP) causes peanut late leaf spot (LLS) disease with 70% yield losses unless controlled by fungicides. CP grows slowly in culture, exhibiting variable phenotypes. To explain those variations, we analyzed the morphology, genomes, transcriptomes and chemical composition of three morphotypes, herein called RED, TAN, and BROWN.
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