Seedlings develop brown, cortical lesions on the internode between the scutellum and coleoptile, and the seminal roots are frequently destroyed. Stenocarpella macrospora stenocarpella maydis synchytrium endobioticum. The list includes country requirements that receive seed from cimmyt mexico. Twelve tropical inbred lines with varying resistance to. Stenocarpella maydis and stenocarpella macrospora species causing leaf spots and stem and ear rots, can be transported and disseminated between cultivating areas through seeds. In the postassembly tailoring steps, redox cascades can transform nascent chemical scaffolds into structurally complex final products. The association of the fungus stenocarpella maydis with corn seed may cause a reduction of seed germination and vigor of the emerged seedlings. Bioactive metabolites from stenocarpella maydis, a stalk.
Stalk rot, white ear rot and seedling blight of maize english. The increase in notill or reducedtill fields and the repeated planting of corn without rotation increase the likelihood that the disease, caused by the fungus, stenocarpella maydis, will be present in the field. Diplodiatoxin was the most cytotoxic followed by dipmatol. Identification, management, and population diversity doctor of philosophy kiersten a. The list includes country requirements that receive seed from cimmyt mexico the table attached contains information collected from the permits granted to cimmyt headquarters located in mexico for exportation of maize experimental seed. Read resistance breeding strategy for stenocarpella maydis and fusarium graminearum cob rots in tropical maize, plant breeding on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. The invention provides a method for analyzing spatial variations in field and crop performance. Head smut maize sphacelotheca reiliana, ustilago maydis gray leaf spot maize cercospora zea maydis maize leaf blight drechslera turcicum stalk rot ear rot maize fusarium graminearum, f.
Genomic selection to resistance to stenocarpella maydis in. Phyllachora maydis and monographella maydis the disease occurs in relatively cool, humid areas in the tropics, similar to the conditions where turcicum leaf blight is prevalent. The association of the fungus stenocarpella maydis with corn seed may. Evaluation for stable resistance to stenocarpella maydis in. Survival of stenocarpella maydis on corn residue in indiana martha p. Wise, department of plant pathology, purdue university, west lafayette, in 47907 accepted for publication 14 march 2017. A method for protecting a subject from a disease associated with infection by a pathogen, said method comprising providing cells of said plant with a class i defensin and a permeabilizing defensin or a precursor or a functional homolog, analog, derivative or variant thereof of either or both. Diplodiosis, a neuromycotoxicosis of cattle and sheep grazing on mouldy cobs infected by stenocarpella maydis, is considered the last major veterinary mycotoxicosis for which the causative mycotoxin is still unknown.
Stenocarpella maydis, auger beetle dinoderus bifoveolatus and maize leaf spot cochliobolus carbonum 4 seeds of rice oryza spp. Exposure of cell cultures to stenocarpella maydis metabolites the cell cultures were seeded in 24well plates at a density of 1. General information about stenocarpella maydis dipdma eppo global database. Combinatorial generation of complexity by redox enzymes in.
Stenocarpella maydis, stenocarpella macrospora, sphaceloteca reiliana trogoderma variabile, trogoderma versicolor. Stenocarpella maydis and fusarium graminearum affect grain yield and quality as a result of mycotoxins produced. Xylanases, cellulases, and acid protease produced by. Name of pest scientific name bipolaris sorokiniana sacc. Bioactive metabolites from stenocarpella maydis, a stalk and ear rot pathogen of maize donald t. Read purification and characterization of the extracellular aspartyl protease apsm1 from the phytopathogen fungus stenocarpella maydis, protein expression and purification on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at. Purification and characterization of the extracellular. Stenocarpella maydis purdue epubs purdue university.
Raje t helminthosporium maydis nisikado et miyake 8. Survival of stenocarpella maydis on corn residue in. Ijms free fulltext isolation of bacteria with antifungal. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
Department of agriculture usda prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability. This article is within the scope of wikiproject fungi, a collaborative effort to improve the coverage of fungi on wikipedia. Diplodia una enfermedad poco conocida del maiz unisem. Throughout its evolution, maize has undergone an intensive domestication process and concurrently it has presented particular susceptibility to certain pathogenic microorganisms that directly influence kernel production and quality, such as stenocarpella maydis, which is a fungus responsible for rot in ears and kernels and causes a disease known as ear rot. In this chapter the characteristics of the above diseases, such as their life cycle, pathogenicity factors, control methods, as well as the biotechnological potential of. Management of diplodia stalk and ear rots in corn pdf. Multiple models have been used to examine stability in many crops, but little of such exits for kenaf. Stenocarpella maydis can significantly reduce yield or grain quality see symptoms and signs as there is a decrease on kernel size, and lower test weight. Influence of inoculum from buried and surface corn residues. Available formats pdf please select a format to send. Activity levels of extracellular hydrolytic enzymes produced by stenocarpella maydis, a fungal pathogen of maize, have so far not been reported. In the present study, the use of these primers was not efficient in differentiating stenocarpella maydis from s.
Jul 01, 2002 read effect of diplodiatoxin stenocarpella maydis on some enzymatic profiles in male and female rats, ecotoxicology and environmental safety on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Should originate from zones free from bacterial rice blight xanthomonas. Get a printable copy pdf file of the complete article 6. An stenocarpella maydis in uska species han fungi in nahilalakip ha divisio nga ascomycota, ngan nga syahan ginhulagway ni miles joseph berkeley, ngan ginhatag han pagkayana nga asya nga ngaran ni brian charles sutton hadton 1980. Of several specimen preparation methods studied, parducz fixation followed by criticalpoint or freezedrying gave adequate preservation for pycnidia, mycelia, and spores. Stenocarpella maydis dipdmaoverview eppo global database. The objective of this study was to investigate the appropriateness of multiple infection as a selection and breeding strategy for multiple resistance to f. Mycelial and spore morphology of diplodia maydis were investigated by using scanning electron microscopy after growth on various media and natural substrates oat and corn kernels, and corn husks. Cabi, wallingford bernstein b, zehr ei, dean ra, shabi e 1995 characteristics of colletotrichum from peach, apple, pecan, and other hosts. Survival of stenocarpella maydis on corn residue in indiana. The current study was aimed at characterizing the cell death observed in mouse neuroblastoma neuro2a, chinese hamster ovary chok1 and madindarby bovine kidney mdbk cell.
Effects of stenocarpella maydis in seeds and in the initial. Quarantine pests fungal diseases declined entry into. Effect of busseola fusca on the incidence of maize ear rot caused by fusarium moniliforme and stenocarpella maydis. Although species of stenocarpella are wellknown as causal agents of cob and. From the seed pathology point of view, both species are important pathogens, causing. The objective was to transform isolates of species of stenocarpella with gfp and dsred and to correlate different inoculum potentials with the effect caused by the presence of these pathogens in the tissues. Pdf stenocarpella macrospora and stenocarpella maydis in.
This work was carried out in order to evaluate the effects of s. Ecology of the maize stalk borer, busseola fusca fuller. Gloerc abacterial food pathogens and mycology, national center for agricultural utilization research, agricultural research service. According to xia and achar 2001, the use of primers allows an accurate detection of stenocarpella maydis associated with maize seeds. The pdf file you selected should load here if your web browser has a pdf reader plugin installed for example, a recent version of adobe acrobat reader if you would like more information about how to print, save, and work with pdfs, highwire press provides a helpful frequently asked questions about pdfs. The method allows analysis of the field and crop performance as a function of various treatment andor environmental conditions. A dnabased method to quantify stenocarpella maydis in maize.
Diplodia leaf streak nlb is a common fungal leaf disease with elongated, mostly oval lesions main difference lesions of nlb do not contain pycnidia diplodia leaf streak left and northern corn leaf blight right disease management crop rotation, as the fungus survives in infected crop residue. Effects of stenocarpella maydis in seeds and in the. Characteristic black, raised, shiny spots are initially produced photo 16. Relationship of stability estimates of various models reveals the importance of one or more estimates for reliable predictions of cultivar behaviour and stability. Common quarantine phytosanitary requirements imposed on. If infection occurs early, some ears may not produce harvestable grain or seed vigor can be compromised. Pdf stenocarpella macrospora and stenocarpella maydis in the. This method is an advance over the prior art in that it allows better defined, more accurate comparisons of adjacent test areas, eliminating the need for extrapolation of. Evaluation for stable resistance to stenocarpella maydis. Pdf a dnabased method to quantify stenocarpella maydis in.
A negative association of yield with resistance to cob rots has been reported. The pdf file you selected should load here if your web browser has a pdf. An stenocarpella maydis in nahilalakip ha genus nga stenocarpella, ordo nga diaporthales, classis nga sordariomycetes, divisio nga ascomycota, ngan regnum nga fungi. Diplodia stalk rot pioneer agronomy sciences, tm, sm trademarks and service marks of pioneer hi bred. The project works to allow users to contribute quality articles and media files to the encyclopedia and track their progress as they are developed.
Diplodia ear rot has become a common disease in indiana corn. Links to pubmed are also available for selected references. The objectives of this study were therefore to investigate the influence of cob characteristics on the response to f. Maize is produced mainly in the northwest, the northwestern, northern and eastern free state, the mpumalanga highveld and the kwazulunatal midlands. Abstract stenocarpella maydis is one of the main fungi associated with maize seeds, being a. Redox enzymes play a central role in generating structural complexity during natural product biosynthesis. Bioactive metabolites from stenocarpella maydis, a stalk and. Corn disease anagement 6 mycoto aqs july 2016 the u. Romero luna, department of plant pathology, james j. Hybrid genetics and weather are also major factors that. One of the most prevalent moulds on harvested maize throughout the world. Sensibility of the pcr technique in the detection of. Fine mapping of a qtl for the number of spikelets per panicle by using near. Chaetoglobosin a 1 is biosynthesized by a hybrid polyketide synthasenonribosomal peptide synthetase.
Gloerc abacterial food pathogens and mycology, national center for agricultural utilization research, agricultural research service, u. Stability analyses of fibres yield of kenaf using multiple. Diplodiatoxin and dipmatol affected mitochondrial succinate dehydrogenase mtt assay and the overall viability of cells as assessed in. Seed health summary notes university of nairobi personal. Stenocarpella macrospora and stenocarpella maydis 3 detection and identification symptoms seedlings infected seed gives rise to preemergence death in cold soils or blighted seedlings in warmer soils. Find support for a specific problem on the support section of our website. The cytotoxicity of three stenocarpella maydis metabolites diplodiatoxin, dipmatol and diplonine was investigated on neuro2a, chok1 and mdbk cell lines.
Stenocarpella macrospora and stenocarpella maydis may result in the seedlings death or cause rotting at the corn stalk base and in all or part of the ear. Xylanases, cellulases, and acid protease produced by stenocarpella maydis grown in solidstate and submerged fermentation. Feb 01, 20 read resistance breeding strategy for stenocarpella maydis and fusarium graminearum cob rots in tropical maize, plant breeding on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Stenocarpella macrospora and stenocarpella maydis in the. To evaluate such effects, seeds of cultivars rb9308yg c1 and rb9108 c2 were inoculated by the osmotic. Morphological observations of diplodia maydis on synthetic. Twumasiafriyie2 1international maize and wheat improvement center cimmyt, mexico 2 cimmyt, ethiopia introduction maize zea mays l. Maize cob rot caused by fusarium graminearum and stenocarpella maydis affects grain yield and quality. Resistance breeding strategy for stenocarpella maydis and. Ear rot of corn caused by stenocarpella maydis diplodia maydis. Stenocarpella maydis and sporisorium reilianum are phytopathogenic fungi that cause white rot in corn cob and head smut in maize zea mays l. Characterization of cell death caused by diplodiatoxin and. Cytotoxicity of diplodiatoxin, dipmatol and diplonine.
Pdf a dnabased method to quantify stenocarpella maydis. Full text is available as a scanned copy of the original print version. Indirect selection for resistance to stenocarpella maydis. Us6505146b1 method and system for spatial evaluation of. Art ic le diaporthaceae associated with root and crown rot of maize. Fungi imperfecti with pycnidia, acervuli and stromata. Diplodia ear rot is caused by the fungus diplodia maydis. Resistance in south african maize inbred lines to the.
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