Abstract:The phylloplane yeast Pseudozyma antarctica secretes an esterase, named PaE, and xylanase when cultivated with xylose. We previously observed that the lipophilic layer of Micro-Tom tomato leaves became thinner after the culture filtrate treatment. The leaves developed reduced water-holding ability and became wilted. In this study, the purified enzymes were spotted on Micro-Tom leaves. PaE, but not xylanase, thinned the lipophilic layer of leaves and decreased leaf resistance to the phytopathogenic fungus Botry… Show more
“…A stressed and nutrient-poor condition of the leaf surface makes this environment selective to certain microorganisms. Hence, different microbial mechanisms such as ability to extract nutrients, produce hormones and surfactants, as well as motility and biofilm formation can be key to colonization success ( Nadakuduti et al , 2012 ; Ueda et al , 2018 ; Leveau, 2019 ; Oso et al , 2019 ; Streletskii et al , 2019 ). Most epiphytes survive on the leaf surface by forming large aggregates which help them to cope with the surrounding milieu and maintain a hydrated surface by production of extracellular polymeric substances (EPSs) ( Morris and Kinkel, 2002 ; Lindow and Brandl, 2003 ; Baldotto and Olivares, 2008 ; Vorholt, 2012 ).…”
The aerial portion of a plant, namely the leaf, is inhabited by pathogenic and non-pathogenic microbes. The leaf's physical and chemical properties, combined with fluctuating and often challenging environmental factors, create surfaces that require a high degree of adaptation for microbial colonization. As a consequence, specific interactive processes have evolved to establish a plant leaf niche.
Little is known about the impact of the host immune system on phyllosphere colonization by non-pathogenic microbes. These organisms can trigger plant basal defenses and benefit the host by priming for enhanced resistance to pathogens. In most disease resistance responses, microbial signals are recognized by extra- or intracellular receptors. The interactions tend to be species-specific and it is unclear how they shape leaf microbial communities.
In natural habitats, microbe-microbe interactions are also important for shaping leaf communities. To protect resources, plant colonizers have developed direct antagonistic or host manipulation strategies to fight competitors.
Phyllosphere-colonizing microbes respond to abiotic and biotic fluctuations and are therefore an important resource for adaptive and protective traits. Understanding the complex regulatory host-microbe-microbe networks is needed to transfer current knowledge to biotechnological applications such as plant-protective probiotics.
“…A stressed and nutrient-poor condition of the leaf surface makes this environment selective to certain microorganisms. Hence, different microbial mechanisms such as ability to extract nutrients, produce hormones and surfactants, as well as motility and biofilm formation can be key to colonization success ( Nadakuduti et al , 2012 ; Ueda et al , 2018 ; Leveau, 2019 ; Oso et al , 2019 ; Streletskii et al , 2019 ). Most epiphytes survive on the leaf surface by forming large aggregates which help them to cope with the surrounding milieu and maintain a hydrated surface by production of extracellular polymeric substances (EPSs) ( Morris and Kinkel, 2002 ; Lindow and Brandl, 2003 ; Baldotto and Olivares, 2008 ; Vorholt, 2012 ).…”
The aerial portion of a plant, namely the leaf, is inhabited by pathogenic and non-pathogenic microbes. The leaf's physical and chemical properties, combined with fluctuating and often challenging environmental factors, create surfaces that require a high degree of adaptation for microbial colonization. As a consequence, specific interactive processes have evolved to establish a plant leaf niche.
Little is known about the impact of the host immune system on phyllosphere colonization by non-pathogenic microbes. These organisms can trigger plant basal defenses and benefit the host by priming for enhanced resistance to pathogens. In most disease resistance responses, microbial signals are recognized by extra- or intracellular receptors. The interactions tend to be species-specific and it is unclear how they shape leaf microbial communities.
In natural habitats, microbe-microbe interactions are also important for shaping leaf communities. To protect resources, plant colonizers have developed direct antagonistic or host manipulation strategies to fight competitors.
Phyllosphere-colonizing microbes respond to abiotic and biotic fluctuations and are therefore an important resource for adaptive and protective traits. Understanding the complex regulatory host-microbe-microbe networks is needed to transfer current knowledge to biotechnological applications such as plant-protective probiotics.
“…There are many kinds of weeds in Shandong province, and the harm of weeds is the main factor affecting and restricting wheat production 2 . At present, a large number of studies on weed control‐technology at home and abroad, includes agricultural controls for different weed communities, containing manual weeding, chemical weed technology, photochemical weeding and electric current weeding 3–7 . Based on the national conditions of China, chemical weeding will continue to be the most practical method 8 …”
“…Puccinia spp. develop better and sporulate on the target plant, without damage to the crops, due to the microclimate of the decomposing straw in no-tillage, controlling different weeds like Fallopia japonica (Ueda et al, 2018). The straw can improve the environment for natural enemies (Trewavas, 2004), like this fungus, due to humidity and mild temperatures while reducing the competition between O. latifolia and garlic plants.…”
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