Controllable Bypass Suppression in Magnaporthe oryzae

Jacob, Stefan; Bersching, Katharina

doi:10.1007/978-1-0716-1613-0_18

Cited by 1 publication

(1 citation statement)

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“…As a species, M. oryzae is known to infect a wide range of cultivated and wild grass plant species; however, individual isolates have a narrow host range due to incompatibility factors present in the plant (Couch & Kohn, 2002; Gladieux et al ., 2018; Jacob, 2021; Ou, 1985). The effector gene AVR1 - CO39 was lost during the early evolution of the rice-specific subgroup of M. oryzae , allowing it to infect rice cultivars in which the corresponding R gene Pi - CO39(t) is present (Tosa et al ., 2005).…”

Section: Discussionmentioning

confidence: 99%

Barley MLA3 recognizes the host-specificity determinant PWL2 from rice blast (M. oryzae)

Brabham

Cruz

Were

et al. 2022

Preprint

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Plant nucleotide-binding leucine-rich repeat immune receptors (NLRs) directly or indirectly recognize pathogen-secreted effector molecules to initiate plant defense. Recognition of multiple pathogens by a single NLR is rare and usually occurs via monitoring for changes to host proteins; few characterized NLRs have been shown to recognize multiple effectors. The barley NLRMlahas undergone functional diversification andMlaalleles recognize host-adapted isolates of barley powdery mildew (Blumeria graminisf. sp.hordei; Bgh). Here, we show thatMla3also confers resistance to rice blast (Magnaporthe oryzae) in a dosage dependent manner. Using a forward genetic screen, we discovered that the recognized effector fromM. oryzaeisPWL2, a host range determinant factor that preventsM. oryzaefrom infecting weeping lovegrass (Eragrostis curvula).Mla3has therefore convergently evolved the capacity to recognize effectors from diverse pathogens.

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