Development of infection structures of <i>Uromyces transversalis</i> in leaves of the host and a nonhost

Ferreira, J. F.; Rijkenberg, F. H. J.

doi:10.1139/b89-059

Cited by 9 publications

(11 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reduced percentages of appressoda over stomata, due to apparent stomatal nonrecognition by the rusts, were also recorded when Phaseolus vulgaris and Camellia sinensis L. were inoculated with Hemileia vastatrix (Coutinho et al, 1992). Similarly, Ferreira and Rijkenberg (1989) observed that many of the germ tubes of gladiolus vus,i{Uromvces transversalis) aborted on maize (non-host) leaves, and of those that successfully formed appressoda on maize, many failed to penetrate the stomatal opening. However, the molecular events that allow the germ tube to recognize and respond to physical features of the plant surface and induce appressodum formation remain unknown.…”

Section: Discussionmentioning

confidence: 89%

See 1 more Smart Citation

Development of Early Infection Structures of Puccinia recondita f. sp. tritici in Non‐host Cereal Species

Rukenberg

1998

Journal of Phytopathology

View full text Add to dashboard Cite

The development of infection structures, derived from urediospores of Puccinia recondita f.sp. trilici in nearisogenic lines of susceptible and resistant wheat, and in non-hosts (viz. maize, oat, sorghum and barley), was examined by fluorescence microscopy and scanning electron microscopy (SEM). The infection structure formation on and in five cereal species follows a similar pattern. In sorghum, fungal development is arrested at the stage of substomatal vesicle formation, while, in maize, most fungal structures collapse during the stage of primary hypha development. By contrast, in wheat, barley and oat, the fungus forms many branched infection hyphae and haustorial mother cells.

show abstract

Section: Discussionmentioning

confidence: 89%

“…It was proposed that such alignment has co-evolved with, or adapted to. the orientation of the stomatal chamber of the host (Ferreira and Rijkenberg, 1989), but this does not appear to be the case for P. recondita f.sp. tritici.…”

Section: Discussionmentioning

confidence: 96%

Development of Early Infection Structures of Puccinia recondita f. sp. tritici in Non‐host Cereal Species

Rukenberg

1998

Journal of Phytopathology

View full text Add to dashboard Cite

show abstract

“…Typical of the genus Uromyces (Cummins and Hiratsuka 1983), uredia of gladiolus rust lack a periderm and paraphyses. On gladiolus leaves, elongate uredia are oriented at right angles to the veins between and along densely packed rows of the mesophyll cells similarly oriented at right angles to the long axis of the leaf (Ferreira and Rijkenberg 1989).…”

Section: Resultsmentioning

confidence: 99%

Ultrastructural morphology of the uredium and collar formation during urediosporogenesis of Uromyces transversalis on gladiolus

Ferreira¹,

Rijkenberg²

1990

Can. J. Bot.

Self Cite

View full text Add to dashboard Cite

1990. Ultrastructural morphology of the uredium and collar formation during urediosporogenesis of Uromyces transversalis on gladiolus. Can. J . Bot. 68: 605412. The transverse uredia of Uromyces transversalis on gladiolus leaves were investigated by scanning and transmission electron microscopy. The basal cell forms one or more protuberances distally, each being delimited by a septum to become a urediospore initial. The initial elongates and lays down a septum to form a urediospore and pedicel. The first protuberance on the basal cell forms holoblastically, and evidence is found at the same locus for the subsequent enteroblastic formation of up to three successive urediospore initials. The pedicel wall of a spore thus formed remains on the basal cell and becomes a collar around the next protuberance. The basal layer of the two-layered septum that delimited the pedicel from the basal cell grows out to form the wall of the subsequent protuberance, and in the process ruptures and laterally displaces the terminal septa1 layer. A new basipetal septum forms to delimit the subsequent urediospore initial. In this manner, several collars form retrogressively and concentrically at one locus. FERREIRA. J. F., et RIJKENBERG, F. H. J. 1990. Ultrastructural morphology of the uredium and collar formation during urediosporogenesis of Uromyces transversalis on gladiolus. Can. J. Bot. 68 : 605412. Les auteurs ont CtudiC, B I'aide de la microscopic Clectronique par balayage et par transmission, 1'Uromyces transversalis venant sur feuilles de glayeul. La cellule basale forme une ou plusieurs protuberances en position distale, chacune ttant dtlimitte par un septum avant de devenir I'initiale de l'urediospore. La cellule initiale s'allonge et depose un septum pour former une urediospore et un pkdicelle.La premibre protuberance sur la cellule basale se forme de fason holoblastique et au mCme lieu on peut trouver la preuve de la formation enttroblastique subsequente, allant jusqu'B trois initiales d'urediospore successives. La paroi du ptdicelle de la spore ainsi formte demeure sur la cellule basale et devient un collier autour de la protuberance suivante. La couche basale constitute par le septum B deux couches, qui delimite le ptdicelle de la cellule basale, s'accroit pour former la paroi de la protubtrance subskquente; au cours de ce processus, il y a rupture et deplacement lattral de la couche septale terminale. Un nouveau septum basipbte se forme pour delimiter I'initiale de l'urediospore subsequente. De cette manikre, plusieurs colliers se foment de fason retrogressive et concentrique sur un meme lieu.[Traduit par la revue]

show abstract

“…In host tissue, the infection wedge is single, similar to that of Uromyces transversalis (Ferreira and Rijkenberg 1989) but unlike the bifurcate infection peg of Puccinia sorghi (Hughes and Rijkenberg 1985). The primary infection hyphae of H. vastatrix are formed in pairs, and their development is synchronous and at right angles to the stomatal slit (Figs.…”

Section: Infection Structure Morphology Within the Nonhost P Vulgarismentioning

confidence: 99%

“…In recent years this technique has been applied to various other rust -host interactions, including those of Uromyces transversalis (Thiim. ) Winter -Gladiolus L. (Ferreira and Rijkenberg 1989) and Puccinia graminis f.sp. tritici Erikss.…”

Section: Introductionmentioning

confidence: 99%

Development of infection structures by Hemileia vastatrix in resistant and susceptible selections of Coffea and in Phaseolus vulgaris

Coutinho¹,

Rijkenberg²,

Asch³

1993

Can. J. Bot.

Self Cite

View full text Add to dashboard Cite

J. 1993. Development of infection structures by Hetnileia vastatrix in resistant and susceptible selections of Coffea and in Phaseolus vulgaris. Can. J. Bot. 71: 1001 -1008.The sequence of events leading to successful infection of Coffea by Hemileia vastatrix, following the formation of an appressorium over a stoma, was investigated using scanning electron microscopy. In the host, Coffea arabica, a torpedoshaped substomatal vesicle initial develops bilaterally from the apex of the infection wedge, while in the nonhost, Phaseolus vulgaris, the infection wedge protrudes into the substomatal chamber. The substomatal vesicle in both host and nonhost, at 48 h postinoculation, is anchor shaped. Haustorial mother cells are formed on stubby primary infection hyphae that curve back onto subsidiary cells. No differences in appearance of these structures were noted between resistant and susceptible coffee selections. A much-branched mycelium ramifies through the intercellular spaces of the mesophyll cells 96 h postinoculation in the host. In bean, the SSV began to collapse 48 h postinoculation.

show abstract

Development of infection structures of Uromyces transversalis in leaves of the host and a nonhost

Cited by 9 publications

References 5 publications

Development of Early Infection Structures of Puccinia recondita f. sp. tritici in Non‐host Cereal Species

Development of Early Infection Structures of Puccinia recondita f. sp. tritici in Non‐host Cereal Species

Ultrastructural morphology of the uredium and collar formation during urediosporogenesis of Uromyces transversalis on gladiolus

Development of infection structures by Hemileia vastatrix in resistant and susceptible selections of Coffea and in Phaseolus vulgaris

Contact Info

Product

Resources

About