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host tissue

Listing 1 - 10 from 340 for host tissue

Plant Pathology: Plant Diseases Overview
... host tissue, wilting, abnormal growth and differentiation and discolouration of host tissue. Some parasites, called necrotrophs, secrete enzymes that kill host tissue, extract nutrients from the cells and then live in the dead tissue ... with water conduction within the plant (i.e. infection of the vascular tissue), or loss of control of transpiration. Abnormal growth and differentiation results from ...
bugs.bio.usyd.edu.au

Plant Pathology: Infection Process
... host tissue, a spore must germinate and grow on the surface of the plant. In the case of motile pathogens, they must find the host and negotiate its surface before entering the host ... all tissues. Some downy mildews can also systemically infect their host by invading the vascular tissue and growing throughout the host, causing deformation, rather than necrosis. Finally, there are some pathogens ...
bugs.bio.usyd.edu.au

Sclerotia Questions
... answer here Submit Answer 2 Answer 2 Very little difference exists. Stromata commonly form in host tissue, and therefore may incorporate plant cells. However, all stromata form fruiting bodies at the completion ... fungi require moisture, while some plant pathogens require a specific molecule released by a potential host plant. Top Question 4 There are no further questions for this topic. Type your ...
bugs.bio.usyd.edu.au

Verticillium Wilt of Strawberry, HYG-3012-95
... to differentiate from those caused by other root infecting fungi. Isolation from diseased tissue and culturing the fungus in the laboratory are necessary for positive disease identification ... tissue. The destruction of water-conducting tissue results in reduced water uptake by the plant; thus, the plants wilt and wither. As fungal colonies get older they produce microsclerotia in infected host tissue ...
ohioline.osu.edu

Black Root Rot of Greenhouse Floral Crops, HYG-3066-96
... There are also methods to culture the fungus from the tissue. Since the pathogen grows slowly onto the culture plate, ... the fungus is very common and widespread. It has a wide host range and affects many other hosts besides greenhouse floral crops ... or nearly so. Thielaviopsis produces resistant "resting" spores on infected host tissue in tremendous numbers. These spores can be splashed about or ...
ohioline.osu.edu

Pecan
... weather conditions are favorable, the spores germinate and enter the host tissue. Within 7-10 days new lesions are formed on the host. Lesions formed on the lower leaf surface [Photo] are characteristically ... rot is caused by a soil-inhabiting fungus pathogen that attacks a wide range of host plants including pecan. Roots of pecan tree can be invaded at any time except during ...
plantpathology.tamu.edu

Lespedza
... itself around the stems of lespedeza plants. It produces suckers or haustoria that penetrate the host tissue and serve to extract nutrients from it. When it occurs in a localized area, a ...
plantpathology.tamu.edu

Disease Cycle
... enlarged image. In most of the United States and Canada, Phytophthora infestans requires a living host to survive between seasons. Usually it lives in infected potato tubers (Fig. 2), which can ... dry conditions no sporulation occurs and the lesion has a brown dead center, surrounded by host tissue that has collapsed and appears either water soaked, gray-green, or yellowed (Fig. 6). Both ...
ppathw3.cals.cornell.edu

On-Line Glossary: S
... 2) somaclonal variation. Variability in clones generated from a single mother plant, leaf, etc. by tissue culture. (2) sooty mold. A fungus of the family Capnodiaceae and of certain other ... with delicate lines, grooves, or ridges. (7) stroma. A compact mass of vegetative tissue, sometimes intermixed with host tissue, often bearing sporocarps either within or upon its surface. (Pl. stromata.) (15) ...
ppathw3.cals.cornell.edu

Canadian Journal of Plant Pathology, Volume 26, Number 1, March 2004
... and cell biology / Biochimie et biologie cellulaire Virulence of Chalara elegans on bean leaves, and host-tissue responses to infection Zamir K. Punja Pages 52-62 Abstract / Résumé Disease control / Moyens ...
pubs.nrc-cnrc.gc.ca