2009
DOI: 10.1094/phyto-99-3-0220
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Transgenic Suppression of Cell Death Limits Penetration Success of the Soybean Rust Fungus Phakopsora pachyrhizi into Epidermal Cells of Barley

Abstract: The basidiomycete Phakopsora pachyrhizi (P. pachyrhizi) causes Asian soybean rust, one of the most devastating plant diseases on soybean. When inoculated on the nonhost barley P. pachyrhizi caused only very small necrotic spots, typical for an incompatible interaction, which involves a hypersensitive cell death reaction. A microscopic inspection of the interaction of barley with P. pachyrhizi revealed that the fungus germinated on barley and formed functional appressoria on epidermal cells. The fungus attempte… Show more

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Cited by 28 publications
(32 citation statements)
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“…Penetration of epidermal cells of nonhost plants was a known phenomenon for P. pachyrhizi (Hoppe and Koch, 1989). We further verified this observation using barley plants and, most importantly, we could show that the inhibition of cell death in epidermal tissue of barley limits penetration success of the pathogen (Hoefle et al, 2009). It must be concluded, therefore, that P. pachyrhizi did not attack plants like a blind battering ram but rather utilizing subtle methods to cause cell death which might contribute to successful infection by avoiding active defense reactions.…”
Section: Discussionsupporting
confidence: 66%
“…Penetration of epidermal cells of nonhost plants was a known phenomenon for P. pachyrhizi (Hoppe and Koch, 1989). We further verified this observation using barley plants and, most importantly, we could show that the inhibition of cell death in epidermal tissue of barley limits penetration success of the pathogen (Hoefle et al, 2009). It must be concluded, therefore, that P. pachyrhizi did not attack plants like a blind battering ram but rather utilizing subtle methods to cause cell death which might contribute to successful infection by avoiding active defense reactions.…”
Section: Discussionsupporting
confidence: 66%
“…hordei (Assaad et al 2004;Collins et al 2003;Kwon et al 2008). Similarly, Required for mlo-specific resistance 1 (Ror1) and Ror2, an ortholog of PEN1, genes are also involved in penetration resistance in barley against nonhost rust pathogen P. pachyrhizi (Hoefle et al 2009). Ror2 is also involved in pre-invasive resistance against host pathogen B. graminis f. sp.…”
Section: Page 7 Of 37mentioning
confidence: 99%
“…The destructive potential of P. pachyrhizi, along with its recent introduction in major soybean-producing countries in the Western hemisphere, has generated a great deal of interest in understanding the molecular interactions of P. pachyrhizi in soybean plants and other non-host plants (Hoefle et al 2009;Goellner et al 2010), with the aim of identifying novel genes for resistance to the fungi, and to obtain varieties with durable resistance.…”
Section: Introductionmentioning
confidence: 99%