The Role of Iron Competition in the Antagonistic Action of the Rice Endophyte Streptomyces sporocinereus OsiSh-2 Against the Pathogen Magnaporthe oryzae

Zeng, Jiarui; Xu, Ting; Cao, Lidan; Tong, Chunyi; Zhang, Xuan; Luo, Dingyi; Han, Song; Pei, P; Fu, Weibin; Yan, Jindong; Liu, Xuanming; Zhu, Yonghua

doi:10.1007/s00248-018-1189-x

Cited by 40 publications

(24 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Diverse types of siderophores produced by antagonistic bacteria have been identified and reported; some of them are recognized and utilized by different microorganisms, while others are specific for each bacterial species (Table 3). Their production confers competitive advantages to the bacteria used as BCA by excluding other microorganisms (including phytopathogens) of the host [40,41]. Under competition conditions to acquire iron, siderophore production by antagonistic bacteria can determine a greater phytopathogen inhibition in the host [42].…”

Section: Siderophoresmentioning

confidence: 99%

Biocontrol of Postharvest Fruit Fungal Diseases by Bacterial Antagonists: A Review

et al. 2019

View full text Add to dashboard Cite

This review deals with the main mechanisms of action exerted by antagonistic bacteria, such as competition for space and nutrients, suppression via siderophores, hydrolytic enzymes, antibiosis, biofilm formation, and induction of plant resistance. These mechanisms inhibit phytopathogen growth that affects postharvest fruit since quality and safety parameters are influenced by the action of these microorganisms, which cause production losses in more than 50% of fruit tree species. The use of synthetic fungicide products has been the dominant control strategy for diseases caused by fungi. However, their excessive and inappropriate use in intensive agriculture has brought about problems that have led to environmental contamination, considerable residues in agricultural products, and phytopathogen resistance. Thus, there is a need to generate alternatives that are safe, ecological, and economically viable to face this problem. Phytopathogen inhibition in fruit utilizing antagonist microorganisms has been recognized as a type of biological control (BC), which could represent a viable and environmentally safe alternative to synthetic fungicides. Despite the ecological benefit that derives from the use of controllers and biological control agents (BCA) at a commercial level, their application and efficient use has been minimal at a global level.

show abstract

Section: Siderophoresmentioning

confidence: 99%

Biocontrol of Postharvest Fruit Fungal Diseases by Bacterial Antagonists: A Review

et al. 2019

View full text Add to dashboard Cite

show abstract

“…In addition to their therapeutic uses, endophytic actinomycetes have a broad potential and value in agricultural application. The endophytes can promote plant growth via direct and indirect mechanisms, including phosphorus solubilization, production of 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase, siderophores, induction of pathogen resistance, and aiding resistance to abiotic stresses like those imposed by high salinity and drought (Conn et al, 2008; Qin et al, 2014, 2017; Trujillo et al, 2015; Zeng et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Community Composition and Metabolic Potential of Endophytic Actinobacteria From Coastal Salt Marsh Plants in Jiangsu, China

Chen

Zhang

et al. 2019

Front. Microbiol.

View full text Add to dashboard Cite

The diversity and functional roles of the plant associated endophytic actinobacteria in unique habitats remain poorly understood. In this paper, we examined the phylogenetic diversity and community composition of endophytic actinobacteria associated with native coastal salt marsh plants in Jiangsu, China using a combination of cultivation and 16S rRNA gene-based high-throughput sequencing (HTS) methods. Further, we evaluated the antifungal, fibrinolytic activities and the secondary metabolite biosynthesis potential of isolates via gene screening. A total of 278 actinobacterial isolates were isolated from 19 plant samples. 16S rRNA gene sequencing revealed that the isolates were highly diverse and belonged to 23 genera within the Actinomycetales order, with Streptomyces , Saccharopolyspora , and Pseudonocardia comprising the most abundant genera. In addition, more than 10 of the isolates were novel actinobacterial taxa distributed across eight genera. HTS analyses of seven representative plant root samples revealed that Actinobacteria phylum constituted 0.04–28.66% of root endophytic bacterial communities. A total of four actinobacterial classes, 14 orders, 35 families, and 63 known genera were detected via HTS, and these communities were found to be dominated by the members of the order Actinomycetales including the genera Streptomyces , Mycobacterium , Arthrobacter , Nocardioides , and Micromonospora . In addition, 30.4% of the representative isolates exhibited antifungal activities, 40.5% of them showed fibrinolytic activities, while 43.0% of the strains harbored secondary metabolite biosynthesis genes. These results demonstrated that coastal salt marsh plants in the Jiangsu Province represented an underexplored new reservoir of diverse and novel endophytic actinobacteria that may be of potential interest in the discovery of bioactive compounds with potential as biocontrol agents and for fibrinolytic enzyme production.

show abstract

“…It can be predicted that Streptomyces exploration and alkaline, iron‐deficient environment will have a significant impact on the composition of surrounding microbial community. Moreover, from an application perspective, iron competition presents significant potential in biocontrol, such as the antagonistic capacity of the rice endophyte S. sporocinereus OsiSh‐2 towards the fungal pathogen Magnaporthe oryzae …”

Section: Siderophores As Molecular Tools For Resource Competitionmentioning

confidence: 99%

Cryptic Chemical Communication: Secondary Metabolic Responses Revealed by Microbial Co‐culture

Liu

Kakeya

2020

Chemistry An Asian Journal

View full text Add to dashboard Cite

Microbial secondary metabolites (SMs) have long been viewed as as ignificants ource of novel pharmaceutical and agrochemical molecules. With the increasing availability of genomic data, numerous biosynthetic gene clusters (BGCs) have been discovered. Despite the presence of tens of thousands of BGCs that can theoretically produce extremely diverse SMs, many gene clusters remain in as ilent state under axenic culture conditions. Co-culture is ap romising research approach as it stimulates the expression of cryptic BGCs to produce novel metabolites and also mimics naturali nterspeciesi nteractions in al aboratory environment. In recenty ears, the roles of SMs in microbial communication have caught the attention of researchers and our understanding of microbes and their productiono fr emarkable SMs has improved. SMs may be extensively involved in av ariety of communication eventsa mong microorganisms. We herein summarize certainr epresentative findings in the field of chemical communication involving SMs in co-culture systems.

show abstract

The Role of Iron Competition in the Antagonistic Action of the Rice Endophyte Streptomyces sporocinereus OsiSh-2 Against the Pathogen Magnaporthe oryzae

Cited by 40 publications

References 51 publications

Biocontrol of Postharvest Fruit Fungal Diseases by Bacterial Antagonists: A Review

Biocontrol of Postharvest Fruit Fungal Diseases by Bacterial Antagonists: A Review

Community Composition and Metabolic Potential of Endophytic Actinobacteria From Coastal Salt Marsh Plants in Jiangsu, China

Cryptic Chemical Communication: Secondary Metabolic Responses Revealed by Microbial Co‐culture

Contact Info

Product

Resources

About