Infected Root Length
Mostrando 1-11 de 11 artigos, teses e dissertações.
-
1. The effects of arbuscular mycorrhizal fungi inoculation on Euterpe oleracea Mart. seedlings.
With the objective of verifying the response of Euterpe oleracea Mart. seedling to seven arbuscular mycorrhizal fungi species, an experimental trial was carried out under greenhouse conditions. Seeds of E. oleracea were sown in carbonized rice husk. Germinating seeds were initially transferred to plastic cups, containing fumigated Reddish Yellow Quartz Sand
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
-
2. ObtenÃÃo de hÃbridos de pimentÃo com resistÃncia a nematÃides de galhas Meloidogyne incognita / Breeding sweet pepper hybrids with resistance to root knot nematodes Meloidoigyne incognita.
The sweet pepper breeding line PIX-027F-01-09-01 bears the Me1 alelle for resistance to races 1, 2, 3 and 4 of Meloidogyne incognita and Meloidogyne javanica, and was issued in crosses with lines PIM-003, PIM-013, PIM-016 and Myr-29. These four hybrids, presumable nematode resistance, were tested along with four susceptible hybrids of similar backgrounds and
Publicado em: 2005
-
3. Propagação de híbridos somáticos de citros e reação à infecção por Phytophthora nicotianae e vírus da tristeza dos citros. / Propagation of citrus somatic hybrids and response to Phytophthora nicotianae and Citrus Tristeza Virus infection.
Somatic hybridization is a new alternative in citric species breeding, yielding somatic hybrids which may integrally keep the genetic combination of both progenitors involved in the hybridization. Thus, the objective of this work was to study the propagation and growth of somatic hybrids parental combinations with potential to be used as rootstock and to ver
Publicado em: 2005
-
4. Novel Expression Pattern of Cytosolic Gln Synthetase in Nitrogen-Fixing Root Nodules of the Actinorhizal Host, Datisca glomerata1[w]
Gln synthetase (GS) is the key enzyme of primary ammonia assimilation in nitrogen-fixing root nodules of legumes and actinorhizal (Frankia-nodulated) plants. In root nodules of Datisca glomerata (Datiscaceae), transcripts hybridizing to a conserved coding region of the abundant nodule isoform, DgGS1-1, are abundant in uninfected nodule cortical tissue, but e
American Society of Plant Biologists.
-
5. A Small GTPase of the Rab Family Is Required for Root Hair Formation and Preinfection Stages of the Common Bean–Rhizobium Symbiotic Association[W]
Legume plants are able to establish a symbiotic relationship with soil bacteria from the genus Rhizobium, leading to the formation of nitrogen-fixing root nodules. Successful nodulation requires both the formation of infection threads (ITs) in the root epidermis and the activation of cell division in the cortex to form the nodule primordium. This study descr
American Society of Plant Biologists.
-
6. Initial stages in the morphogenesis of nitrogen-fixing stem nodules of Sesbania rostrata.
Morphogenesis of stem nodules in Sesbania rostrata was studied over a period of 6 days after inoculation with an appropriate species of Rhizobium. Nodulation sites were initially slightly raised, circular areas 0.3 to 0.6 mm in diameter and 4 to 5 mm apart in vertical rows along the length of the stem. Each site was underlaid by an adventitious root primordi
-
7. Characterization of streptomyces lydicus WYEC108 as a potential biocontrol agent against fungal root and seed rots.
The actinomycete Streptomyces lydicus WYEC108 showed strong in vitro antagonism against various fungal plant pathogens in plate assays by producing extracellular antifungal metabolites. When Pythium ultimum or Rhizoctonia solani was grown in liquid medium with S. lydicus WYEC108, inhibition of growth of the fungi was observed. When WYEC108 spores or mycelia
-
8. The Nuclear Ribosomal DNA Intergenic Spacer as a Target Sequence To Study Intraspecific Diversity of the Ectomycorrhizal Basidiomycete Hebeloma cylindrosporum Directly on Pinus Root Systems
Polymorphism of the nuclear ribosomal DNA intergenic spacer (IGS) of the ectomycorrhizal basidiomycete Hebeloma cylindrosporum was studied to evaluate whether this sequence could be used in field studies to estimate the diversity of strains forming mycorrhizas on individual Pinus pinaster root systems. This sequence was amplified by PCR from 125 haploid homo
American Society for Microbiology.
-
9. Glutathione and Homoglutathione Synthesis in Legume Root Nodules1
High-performance liquid chromatography (HPLC) with fluorescence detection was used to study thiol metabolism in legume nodules. Glutathione (GSH) was the major non-protein thiol in all indeterminate nodules examined, as well as in the determinate nodules of cowpea (Vigna unguiculata), whereas homoglutathione (hGSH) predominated in soybean (Glycine max), bean
American Society of Plant Physiologists.
-
10. Identification of root rot fungi in nursery seedlings by nested multiplex PCR.
The internal transcribed spacer (ITS) of the ribosomal DNA (rDNA) subunit repeat was sequenced in 12 isolates of Cylindrocladium floridanum and 11 isolates of Cylindrocarpon destructans. Sequences were aligned and compared with ITS sequences of other fungi in GenBank. Some intraspecific variability was present within our collections of C. destructans but not
-
11. Genetic structure of populations of Porphyromonas gingivalis associated with periodontitis and other oral infections.
One hundred isolates of the oral pathogenic bacterium Porphyromonas gingivalis were genetically characterized by determining the electrophoretic mobilities of 16 metabolic enzymes and the presence or absence of catalase activity. A total of 78 distinct electrophoretic types (ETs), representing multilocus genotypes, were identified, and cluster analysis place