Pathogen-induced activation of disease-suppressive functions in the endophytic root microbiome

Science, Год журнала: 2019, Номер 366(6465), С. 606 - 612

Опубликована: Окт. 31, 2019

Protecting plants from the inside out Some soils show a remarkable ability to suppress disease caused by plant pathogens, an that is attributed plant-associated microbiota. Carrión et al. investigated role of endophytes, intimate microbial community found within roots, in fungal suppression (see Perspective Tringe). The wilt fungus Rhizoctonia solani infects sugar beets, whereupon transcriptional analysis shows several bacterial endophyte species activate biosynthetic gene clusters cause suppression. These organisms produce antifungal effectors, including enzymes can digest cell walls, and secondary metabolites, phenazines, polyketides, siderophores, which may contribute phenotype. Science , this issue p. 606 ; see also 568

Язык: Английский

---

Disease-induced assemblage of a plant-beneficial bacterial consortium

The ISME Journal, Год журнала: 2018, Номер 12(6), С. 1496 - 1507

Опубликована: Март 7, 2018

Disease suppressive soils typically develop after a disease outbreak due to the subsequent assembly of protective microbiota in rhizosphere. The role plant immune system assemblage rhizosphere microbiome is largely unknown. In this study, we demonstrate that Arabidopsis thaliana specifically promotes three bacterial species upon foliar defense activation by downy mildew pathogen Hyaloperonospora arabidopsidis. promoted bacteria were isolated and found interact synergistically biofilm formation vitro. Although separately these did not affect significantly, together they induced systemic resistance against growth plant. Moreover, show soil-mediated legacy primary population infected plants confers enhanced protection second growing same soil. Together our results indicate can adjust their root infection recruit group resistance-inducing growth-promoting beneficial microbes, therewith potentially maximizing chance survival offspring will grow

Язык: Английский

---

Understanding and exploiting plant beneficial microbes

Current Opinion in Plant Biology, Год журнала: 2017, Номер 38, С. 155 - 163

Опубликована: Июнь 14, 2017

After a century of incremental research, technological advances, coupled with need for sustainable crop yield increases, have reinvigorated the study beneficial plant-microbe interactions attention focused on how microbiomes alter plant phenotypes. We review recent advances in microbiome and describe potential applications increasing productivity. The phylogenetic diversity is increasingly well characterized, their functional becoming more accessible. Large culture collections are available controlled experimentation, to come. Genetic resources being brought bear questions function. expect that microbial amendments varying complexities will expose rules governing contributing growth promotion disease resistance, enabling agriculture.

Язык: Английский

---

Root exudates drive the soil-borne legacy of aboveground pathogen infection

Microbiome, Год журнала: 2018, Номер 6(1)

Опубликована: Сен. 12, 2018

Plants are capable of building up beneficial rhizosphere communities as is evidenced by disease-suppressive soils. However, it not known how and why soil bacterial impacted plant exposure to foliar pathogens if such responses might improve performance in the presence pathogen. Here, we conditioned growing multiple generations (five) Arabidopsis thaliana inoculated aboveground with Pseudomonas syringae pv tomato (Pst) same soil. We then examined a subsequent generation (sixth) grown pathogen-conditioned versus control-conditioned Moreover, assessed role altered root exudation profiles shaping microbiome infected plants.Plants showed increased levels jasmonic acid improved disease resistance. Illumina Miseq 16S rRNA gene tag sequencing revealed that both bulk were Pst infection. Infected plants exhibited significantly higher amino acids, nucleotides, long-chain organic acids (LCOAs) (C > 6) lower for sugars, alcohols, short-chain (SCOAs) ≤ 6). Interestingly, addition exogenous LCOA also elicited response.Collectively, our data suggest can recruit via modification patterns response benefit generations.

Язык: Английский

---

Modulation of the Root Microbiome by Plant Molecules: The Basis for Targeted Disease Suppression and Plant Growth Promotion

Frontiers in Plant Science, Год журнала: 2020, Номер 10

Опубликована: Янв. 24, 2020

Plants host a mesmerizing diversity of microbes inside and around their roots, known as the microbiome. The microbiome is composed mostly fungi, bacteria, oomycetes, archaea that can be either pathogenic or beneficial for plant health fitness. To grow healthy, plants need to surveil soil niches roots detection microbes, in parallel maximize services nutrients uptake growth promotion. employ palette mechanisms modulate including structural modifications, exudation secondary metabolites coordinated action different defence responses. Here, we review current understanding on composition activity root how molecules shape structure root-associated microbial communities. Examples are given interactions occur rhizosphere between soilborne fungi. We also present some well-established examples harnessing highlight fitness by selecting Understanding manipulate aid design next-generation inoculants targeted disease suppression enhanced growth.

Язык: Английский

---

Disease Suppressive Soils: New Insights from the Soil Microbiome

Phytopathology, Год журнала: 2017, Номер 107(11), С. 1284 - 1297

Опубликована: Июнь 26, 2017

Soils suppressive to soilborne pathogens have been identified worldwide for almost 60 years and attributed mainly or antagonistic microorganisms. Rather than identifying, testing applying potential biocontrol agents in an inundative fashion, research into soils has attempted understand how indigenous microbiomes can reduce disease, even the presence of pathogen, susceptible host, favorable environment. Recent advances next-generation sequencing provided new tools reexamine further characterize nature these soils. Two general types suppression described: specific suppression, theories developed around two models. In this review, we will present three examples currently-studied model systems with features representative suppressiveness: take-all (Gaeumannomyces graminis var. tritici), Rhizoctonia bare patch wheat (Rhizoctonia solani AG-8), Streptomyces. To compare contrast models versus propose a number hypotheses about ecology microbial populations communities We outline limitations molecular techniques that provide novel ways hypotheses. Finally, consider greater understanding phytobiome facilitate sustainable disease management agriculture by harnessing soil microbes.

Язык: Английский

---

Initial soil microbiome composition and functioning predetermine future plant health

Science Advances, Год журнала: 2019, Номер 5(9)

Опубликована: Сен. 6, 2019

Soil microbiome composition and functioning determine the outcome of plant-pathogen interactions under natural field conditions.

Язык: Английский

---

The Soil-Borne Legacy

Cell, Год журнала: 2018, Номер 172(6), С. 1178 - 1180

Опубликована: Март 1, 2018

Язык: Английский

---

Plant microbial diversity is suggested as the key to future biocontrol and health trends

FEMS Microbiology Ecology, Год журнала: 2017, Номер 93(5)

Опубликована: Апрель 19, 2017

The microbiome of plants plays a crucial role in both plant and ecosystem health. Rapid advances multi-omics tools are dramatically increasing access to the consequently identification its links with diseases control those diseases. Recent insights reveal close, often symbiotic relationship between microorganisms plants. Microorganisms can stimulate germination growth, prevent diseases, promote stress resistance general fitness. Plants their associated form holobiont have be considered as co-evolved species assemblages consisting bacterial, archaeal diverse eukaryotic species. beneficial interplay host is responsible for maintaining health holobiont, while correlated microbial dysbioses. Microbial diversity was identified key factor preventing implemented biomarker protection strategies. Targeted predictive biocontrol approaches possible by developing microbiome-based solutions. Moreover, combined breeding strategies required. analysis data has brought about paradigm shift our understanding disease substantial consequences issues.

Язык: Английский

---

Let the Core Microbiota Be Functional

Trends in Plant Science, Год журнала: 2017, Номер 22(7), С. 583 - 595

Опубликована: Май 23, 2017

Язык: Английский

---