A Review of the Studies and Interactions ofPseudomonas syringaePathovars on Wheat

Abstract

<jats:p>Wheat is affected by some pathovars of<jats:italic>Pseudomonas syringae</jats:italic>and by other<jats:italic>Pseudomonas</jats:italic>species. Of these,<jats:italic>P. syringae</jats:italic>pv.<jats:italic>syringae</jats:italic>is the major one responsible for reduction. Recent studies have been made to characterize and identify the pathogen and to determine its aggressiveness and the pattern of colonization in seed and its effects on seed yield, yield components, and source-sink relationships during postanthesis. It was found that the reduction in the aerial biomass production is the best way to evaluate the aggressiveness of this bacterium, and the spray inoculation is good tool to make evaluations at seedling stage. The characterization of bacteria fingerprintings with molecular markers such as RAPD-PCR, ERIC, and REP-PCR is available. Genomic evolution has been elucidated with next-generation genome sequencing. Also, the colonization pattern shows that, early on, microcolonies are frequently detected in the aleurone layer, later in the endosperm and finally close to the crease and even in some cells of the embryo itself. In the wheat cultivars Seri M82 and Rebeca F2000 seed yield and its components are negatively affected. In general,<jats:italic>P. syringae</jats:italic>pv.<jats:italic>syringae</jats:italic>reduces the plant height, seed yield, and yield components, as well as the growth of most organs. When this bacterium attacks, the stems are the predominant sink organs and the leaf laminae and panicles are the predominant source organs.</jats:p>

Large-scale analysis of NBS domain-encoding resistance gene analogs in Triticeae

“…Nevertheless, it has been reported that, out of almost 50 known P. syringae pathovars, P. syringae pv. atrofaciens causes “basal glume blotch” in wheat and barley (Toben et al , 1991; Valencia-Botín and Cisneros-López, 2012), P. syringae pv. syringae causes “leaf blight” in wheat and barley (Toben et al , 1991; Valencia-Botín and Cisneros-López, 2012), P. syringae pv.…”

“…atrofaciens causes “basal glume blotch” in wheat and barley (Toben et al , 1991; Valencia-Botín and Cisneros-López, 2012), P. syringae pv. syringae causes “leaf blight” in wheat and barley (Toben et al , 1991; Valencia-Botín and Cisneros-López, 2012), P. syringae pv. japonica can cause blight or striated areas on the nodes (Valencia-Botín and Cisneros-López, 2012), in addition to other Pseudomonads that are known to infect wheat, such as P. cichorii, causing stem or shank melanosis and P. fuscovaginae that induces a black rot in the wheat sheath.…”

Leveraging Pseudomonas Stress Response Mechanisms for Industrial Applications

“…There are also plant beneficial species such as P. chlororaphis that have been utilized as biopesticides to control microbial pathogens, insects, and nematodes ( Anderson and Kim, 2018 ). The plant pathogen P. syringae has been studied for its broad host range in commercial crops and the resulting yield reduction ( Valencia-Botín and Cisneros-López, 2012 ). The opportunistic pathogen P. aeruginosa is known for infecting immunocompromised individuals and has a natural resistance to many antibiotics ( Priebe and Goldberg, 2014 ).…”

An Optimized in situ Quantification Method of Leaf H2O2 Unveils Interaction Dynamics of Pathogenic and Beneficial Bacteria in Wheat

“…As a consequence, PGPR have emerged as a promising alternative to increase oxidative stress tolerance and disease resistance in plants (Islam et al, 2014;Pieterse et al, 2014). Wheat (Triticum aestivum) is challenged by several bacterial pathogens, which can cause severe diseases and pests (Valencia-Botín and Cisneros-López, 2012). The pathogen Pseudomonas syringae pv.…”