JUB1 suppresses Pseudomonas syringae-induced defense responses through accumulation of DELLA proteins
AuthorShahnejat-Bushehri, S; Nobmann, B; Allu, AD; Balazadeh, S
Source TitlePlant Signaling and Behavior
PublisherTAYLOR & FRANCIS INC
University of Melbourne Author/sDEVI ALLU, ANNAPURNA
AffiliationAgriculture and Food Systems
Document TypeJournal Article
CitationsShahnejat-Bushehri, S., Nobmann, B., Allu, A. D. & Balazadeh, S. (2016). JUB1 suppresses Pseudomonas syringae-induced defense responses through accumulation of DELLA proteins. PLANT SIGNALING & BEHAVIOR, 11 (6), https://doi.org/10.1080/15592324.2016.1181245.
Access StatusOpen Access
Phytohormones act in concert to coordinate plant growth and the response to environmental cues. Gibberellins (GAs) are growth-promoting hormones that recently emerged as modulators of plant immune signaling. By regulating the stability of DELLA proteins, GAs intersect with the signaling pathways of the classical primary defense hormones, salicylic acid (SA) and jasmonic acid (JA), thereby altering the final outcome of the immune response. DELLA proteins confer resistance to necrotrophic pathogens by potentiating JA signaling and raise the susceptibility to biotrophic pathogens by attenuating the SA pathway. Here, we show that JUB1, a core element of the GA - brassinosteroid (BR) - DELLA regulatory module, functions as a negative regulator of defense responses against Pseudomonas syringae pv. tomato DC3000 (Pst DC3000) and mediates the crosstalk between growth and immunity.
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