The nature of disease resistance in plants. I

Wingard, S. A.

doi:10.1007/bf02872445

Cited by 25 publications

(10 citation statements)

References 54 publications

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“…Proteins in Arabidopsis thaliana interacting in SNARE complexes were shown to be responsible for non-host resistance to powdery mildew of barley (Collins et al 2003). VIT_14s0068g01970, which is involved in xylan biosynthesis, is another promising candidate gene because the presence of xylan, a type of hemicellulose, was shown to be associated with increased infection of Fusarium herbarum on wheat (Wingard 1941). Unfortunately, most differentially transcribed genes were associated with proteins of unknown functionality.…”

Section: Discussionmentioning

confidence: 99%

Construction of a dense SNP map of a highly heterozygous diploid potato population and QTL analysis of tuber shape and eye depth

Prashar

Hornyik

Young³

et al. 2014

Theor Appl Genet

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Key message Downy mildew resistance across days post-inoculation, experiments, and years in two interspecific grapevine F 1 families was investigated using linear mixed models and Bayesian networks, and five new QTL were identified. Abstract Breeding grapevines for downy mildew disease resistance has traditionally relied on qualitative gene resistance, which can be overcome by pathogen evolution. Analyzing two interspecific F 1 families, both having ancestry derived from Vitis vinifera and wild North American Vitis species, across 2 years and multiple experiments, we found multiple loci associated with downy mildew sporulation and hypersensitive response in both families using a single phenotype model. The loci explained between 7 and 17% of the variance for either phenotype, suggesting a complex genetic architecture for these traits in the two families studied. For two loci, we used RNA-Seq to detect differentially transcribed genes and found that the candidate genes at these loci were likely not NBS-LRR genes. Additionally, using a multiple phenotype Bayesian network analysis, we found effects between the leaf trichome density, hypersensitive response, and sporulation phenotypes. Moderate-high heritabilities were found for all three phenotypes, suggesting that selection for downy mildew resistance is an achievable goal by breeding for either physical-or non-physical-based resistance mechanisms, with the combination of the two possibly providing durable resistance.

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Section: Discussionmentioning

confidence: 99%

Construction of a dense SNP map of a highly heterozygous diploid potato population and QTL analysis of tuber shape and eye depth

Prashar

Hornyik

Young³

et al. 2014

Theor Appl Genet

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“…A resistência da planta a pragas é geralmente definida pela habilidade da mesma em diminuir, inibir ou superar o ataque do patógeno (Wingard, 1953). Na Entomologia, a resistência é definida por características herdadas da planta que influenciam no dano causado pelo inseto-praga, sendo a não-preferência, a antibiose e a tolerância os três tipos de resistência.…”

Section: Uso De Variedades Resistentesunclassified

Manejo integrado de nematóides na cultura da bananeira

Ritzinger

Fancelli

2006

Rev. Bras. Frutic.

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RESUMO -O manejo integrado é uma exigência dos mercados importadores, sobretudo da Comunidade Européia (CE), rigorosa em requisitos de qualidade e sustentabilidade, que enfatiza primordialmente a proteção do meio ambiente, segurança alimentar, condições de trabalho, saúde humana e viabilidade econômica. Neste contexto, a utilização da matéria orgânica no manejo dos solos é uma das estratégias que mais benefícios traz à biodiversidade e conservação dos solos. É prática conhecida desde os primórdios da civilização. Contudo, sua utilização de forma efetiva depende ainda do conhecimento de muitas interações que ocorrem no agroecossistema. São apresentados alguns estudos de sua utilização no manejo integrado de fitonematóides e perspectivas de validação, com enfoque na cultura da bananeira e possibilidades de sua adoção para atender à demanda de sustentabilidade. Termos para indexação: biodiversidade, agroecossistemas, sustentabilidade, pragas, controle biológico, mecanismos. INTEGRATED MANAGEMENT OF NEMATODES IN THE BANANA TREE CULTUREABSTRACT -The integrated management is a requirement of the European Community (CE) which demands rigorous quality product and sustainability, which is emphasized primarily on the environment protection, food safety, work conditions, human health and economical viability. In this context, the use of organic amendments for soil management is one of the strategies that brings the most benefits to soil biodiversity and conservation. This practice is known since the beginning of the civilization. Nevertheless, an effective use still depends on the knowledge of the many interactions in the agro-ecosystem. This review presents some studies of its use in integrated management of plant parasitic nematodes, validation perspectives focused in banana and use possibilities to assist the sustainability demand. Index Terms: biodiversity, agro-ecosystems, sustainability, pest, biological control, mechanisms. REVISÃO / REVIEW1 Embrapa Mandioca e Fruticultura Tropical, Caixa postal, 007, CEP 44380-000, Cruz das Almas, BA, e-mail: cecilia@cnpmf.embrapa.br.Os nematóides constituem o mais abundante grupo de animais multicelulares em número de indivíduos no universo, estimado em um milhão de espécies (Viglierchio, 1991). Muitas espécies são importantes na agricultura, pelos danos causados à produção, e outros, de vida livre, exatamente pelo seu efeito benéfico à agricultura. Os nematóides fitoparasitas, que promovem a destruição do sistema radicular, induzindo a formação de nodulações ou lesões necróticas nas raízes, impedem as plantas de absorverem água e nutrientes.As perdas devidas ao ataque de nematóides na agricultura mundial estão estimadas em aproximadamente, US$ 80 bilhões/ano (Agrios, 1997). Na agricultura americana, essas perdas são estimadas em US$ 8 bilhões/ano, o que corresponde a 10% em relação à agricultura mundial (Barker et al., 1994). No Brasil, a quantificação de perdas não é precisa, devido principalmente às interações com danos provocados por pragas e outras doenças, condições climátic...

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“…For example the hydrophobic nature of leaf surfaces affects infection by water-dispersed spores (Wingaard 1941;Dickinson 1960) and chemical components of leaf surface materials inhibit spore germination (Martin, Batt, and Burchill 1957 ;Shepherd and Mandryk 1963). The importance of these effects would vary as leaves age because weathering is likely to reduce glaucousness and to remove or chemically alter germination inhibitors.…”

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confidence: 99%

Leaf Characteristics of Euoalyptus Bicostata Maiden Et Al. Seedlings Affecting the Deposition and Germination of Spores of Phaeoseptoria Eucalypti (Hansf.) Walker

Heatrer¹

1967

Aust. Jnl. Of Bio. Sci.

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SummaryThe water·soluble fraction of the ether·soluble moiety of the glaucous coating on the juvenile leaves of seedlings of Eucalyptus bicostata Maiden et al. inhibited the in vitro germination of the conidia of Phaeoseptoria eucalypti (Hansf.) Walker. A negative correlation was obtained between susceptibility of leaves to P. eucalypti leaf spot and the weight per unit leaf area of ether-soluble substances also soluble in water. Glaucousness of seedling leaves and inhibition of spore germination both increased acropetally, glaucousness also increasing when seedlings were raised at lower temperatures. The glaucous coating of leaves was strongly hydrophobic and affected the deposition of conidia from water suspensions as did the leaf angle.Hydrophobicity of glaucous surfaces and leaf angle are probably more important than chemical inhibition of spore germination in affecting field infection of E. bicostata leaves by P. eucalypti.

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The nature of disease resistance in plants. I

Cited by 25 publications

References 54 publications

Construction of a dense SNP map of a highly heterozygous diploid potato population and QTL analysis of tuber shape and eye depth

Construction of a dense SNP map of a highly heterozygous diploid potato population and QTL analysis of tuber shape and eye depth

Manejo integrado de nematóides na cultura da bananeira

Leaf Characteristics of Euoalyptus Bicostata Maiden Et Al. Seedlings Affecting the Deposition and Germination of Spores of Phaeoseptoria Eucalypti (Hansf.) Walker

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