2001
DOI: 10.1094/phyto.2001.91.2.149
|View full text |Cite
|
Sign up to set email alerts
|

Ultrastructure of the Infection ofSorghum bicolorbyColletotrichum sublineolum

Abstract: Ultrastructural studies of the infection of susceptible and resistant cultivars of Sorghum bicolor by Colletotrichum sublineolum were conducted. Initial penetration events were the same on both susceptible and resistant cultivars. Germ tubes originating from germinated conidia formed globose, melanized appressoria, that penetrated host epidermal cells directly. Appressoria did not produce appressorial cones, but each penetration pore was surrounded by an annular wall thickening. Inward deformation of the cutic… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

8
86
1
7

Year Published

2005
2005
2024
2024

Publication Types

Select...
5
4

Relationship

0
9

Authors

Journals

citations
Cited by 97 publications
(102 citation statements)
references
References 28 publications
8
86
1
7
Order By: Relevance
“…This structure is an extension of the penetration peg wall and may act on the hydrostatic pressure at the penetration spot. However, in this study the appressorial cone was not observed, which is also the case of C. sublineolum (WHARTON et al, 2001), C truncatum (O'CONNELL et al, 1993) and C. acutatum (ARROYO et al, 2005). The lack of a cone in some species and its presence in others suggests that mechanism of infection by species of Colletotrichum depends on the host species.…”
Section: Suspensions Of 10contrasting
confidence: 69%
“…This structure is an extension of the penetration peg wall and may act on the hydrostatic pressure at the penetration spot. However, in this study the appressorial cone was not observed, which is also the case of C. sublineolum (WHARTON et al, 2001), C truncatum (O'CONNELL et al, 1993) and C. acutatum (ARROYO et al, 2005). The lack of a cone in some species and its presence in others suggests that mechanism of infection by species of Colletotrichum depends on the host species.…”
Section: Suspensions Of 10contrasting
confidence: 69%
“…On its route toward the root vasculature, the fungus progresses intracellularly, displaying limited hyphal branching inside the cells, in contrast to the intense hyphal proliferation that almost entirely fills leaf sheath cells (Kankanala et al, 2007;Mosquera et al, 2009). Root infection by M. oryzae was marked by cellular features typical for biotrophic interactions: the presence of a plant-derived membrane surrounding intracellular IH separating fungal from host cytoplasm and a massive constriction of the fungal hyphae when crossing host cells leading to a nondestructive progression of the pathogen within the tissue (Wharton et al, 2001;Harrison et al, 2002;Lagopodi et al, 2002;Panstruga, 2003;Maciá -Vicente et al, 2009). Importantly, in leaf tissue, biotrophic growth is restricted to the front of infection since penetrated cells die once the fungus progresses to the neighboring cells (Kankanala et al, 2007).…”
Section: Discussionmentioning
confidence: 99%
“…The penetration peg has been observed and described at the ultrastructural level in other Colletotrichum spp. that infect other hosts (Coates et al 1993;Latunde-Dada et al 1996;Mercer et al 1975;Mould et al 1991b;O'Connell et al 1985;Politis and Wheeler 1973;Wharton et al 2001;Xuei et al 1988). Curry et al (2002) mentioned, but did not describe, the formation of the penetration peg from appressoria of C. fragariae infecting strawberry tissues, at the light microscope level but not the ultrastructural level.…”
Section: Discussionmentioning
confidence: 99%
“…Whereas other species of Colletotrichum produce a penetration peg and develop an intracellular infection vesicle (Bailey et al 1990;Latunde-Dada et al 1996;O'Connell et al 1985;Wharton et al 2001), C. acutatum produces a penetration peg that develops a subcuticular and intramural infection vesicle. These results demonstrate that this pathogen uses a subcuticular intramural invasion strategy, which is related to species with a wide host range that are considered generalist invaders (Bailey et al 1992).…”
Section: Discussionmentioning
confidence: 99%