An arbuscular mycorrhizal fungus and Epichloë festucae var. lolii reduce Bipolaris sorokiniana disease incidence and improve perennial ryegrass growth

Li, Fang; Guo, Yufen; Christensen, Michael J.; Gao, Peng; Li, Yanzhong; Duan, Taizhong

doi:10.1007/s00572-017-0813-9

Cited by 43 publications

(28 citation statements)

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“…Several beneficial fungal species with mycorrhizal or endophytic lifestyles are able to defend their plant hosts against pathogen infection (Bonfante & Genre, 2010;Druzhinina et al, 2011;Zuccaro et al, 2014;Weiss et al, 2016;Li et al, 2018). Like S. indica, S. vermifera was previously shown to induce systemic resistance to foliar infections by the obligate biotrophic pathogen Blumeria graminis f.sp.…”

Section: Serendipita Vermifera-mediated Local and Systemic Barley Promentioning

confidence: 99%

The inconspicuous gatekeeper: endophytic Serendipita vermifera acts as extended plant protection barrier in the rhizosphere

et al. 2019

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Summary In nature, beneficial and pathogenic fungi often simultaneously colonise plants. Despite substantial efforts to understand the composition of natural plant−microbe communities, the mechanisms driving such multipartite interactions remain largely unknown. Here we address how the interaction between the beneficial root endophyte Serendipita vermifera and the pathogen Bipolaris sorokiniana affects fungal behaviour and determines barley host responses using a gnotobiotic soil‐based split‐root system. Fungal confrontation in soil resulted in induction of B. sorokiniana genes involved in secondary metabolism and a significant repression of genes encoding putative effectors. In S. vermifera, genes encoding hydrolytic enzymes were strongly induced. This antagonistic response was not activated during the tripartite interaction in barley roots. Instead, we observed a specific induction of S. vermifera genes involved in detoxification and redox homeostasis. Pathogen infection but not endophyte colonisation resulted in substantial host transcriptional reprogramming and activation of defence. In the presence of S. vermifera, pathogen infection and disease symptoms were significantly reduced despite no marked alterations of the plant transcriptional response. The activation of stress response genes and concomitant repression of putative effector gene expression in B. sorokiniana during confrontation with the endophyte suggest a reduction of the pathogen's virulence potential before host plant infection.

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Section: Serendipita Vermifera-mediated Local and Systemic Barley Promentioning

confidence: 99%

The inconspicuous gatekeeper: endophytic Serendipita vermifera acts as extended plant protection barrier in the rhizosphere

et al. 2019

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“…AMF colonisation increases watermelon yield in drought stress (Mo et al, ). In addition, AMF reduce Fusarium infections in tomato ( Solanum lycopersicum ), Bipolaris sorokiniana disease in perennial ryegrass ( Lolium perenne L.) and nematode infections in pigeon pea ( Cajanus cajan ) (Goswami et al , ; Steinkellner et al, ; Li, Guo, Michael, et al, ). In the present study, we demonstrated that nursery cultivation seedlings with AMF improved watermelon yield and suppressed wilt disease in continuously cropped watermelon fields.…”

Section: Discussionmentioning

confidence: 99%

Mechanism of application nursery cultivation arbuscular mycorrhizal seedling in watermelon in the field

Ren

Wang

Yue

et al. 2018

Annals of Applied Biology

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Arbuscular mycorrhizal fungi (AMF) colonisation of plant root facilitates the absorption of nutrients such as phosphorus (P) and enhances plant biotic and abiotic resistance generally. However, arbuscular mycorrhiza (AM) colonisation decreases with application of chemical fertiliser. Here, we investigated whether AMF inoculation in nurseries would facilitate AM colonisation and take physiological and ecological functions in watermelon (Citrullus lanatus) in the field. Pot experiments were carried out to study the change of AMF colonised seedling on physiology and gene expression in nursery site. Field experiments were performed to investigate the effect of nursery AMF inoculation on yield, quality and disease resistance of watermelon in the field. The results showed that nursery-inoculated seedlings produced more dry matter and root surface area than non-inoculated seedlings. Expression of the secretory purple acid phosphatase (PAP) genes ClaPAP10 and ClaPAP26 was up-regulated following AMF colonisation. Accordingly, acid phosphatase activities at the root surface and P concentrations in seedling were enhanced. After transplantation to the field, the shoot dry matter and P concentration in old stem were higher in the nursery AMF inoculated seedlings than that in non-AMF inoculated seedling. AMF inoculation also induced increase of yields and decrease of wilt disease indexes and soluble sugar content. In addition, acid phosphatase activities and AMF spore densities were increased by nursery-inoculation in watermelon rhizosphere soil in the field. In conclusion, nursery colonisation AMF seedling enhanced watermelon growth and yield by improving the root growth and P acquisition in nursery cultivating stage, as well as optimised soil properties in the field. Nursery cultivation of watermelon seedling with AMF was an effective technique to reduce wilt disease in continuous cropped management in watermelon. K E Y W O R D Sacid phosphatase, arbuscular mycorrhiza, Citrullus lanatus, nursery seedling cultivation, phosphorus absorption

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“…The seeds were provided by the Entry-Exit Quarantine Bureau of Gansu Province, Lanzhou City, China. Seeds were surface-sterilized in 3% sodium hypochlorite for 30 s, and subsequently rinsed five times with sterile water (Li et al 2018). The sterilized seeds then were placed on two pieces of wet filter paper in glass Petri dishes with 9 cm diameter.…”

Section: Plant and Fungal Materialsmentioning

confidence: 99%

Dual inoculation of alfalfa ( Medicago sativa L.) with Funnelliformis mosseae and Sinorhizobium medicae can reduce Fusarium wilt

Wang

Ding²,

Li³

et al. 2020

J Appl Microbiol

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Aims: This study was designed to evaluate the biocontrol of the arbuscular mycorrhizal fungus (AMF) Funnelliformis mosseae and the rhizobium Sinorhizobium medicae on alfalfa (Medicago sativa) wilt caused by Fusarium oxysporum, a severe soil-borne fungal pathogen. Methods and Results: The effects of co-inoculation of F. mosseae and S. medicae on alfalfa growth, nitrogen, phosphorus uptake and wilt caused by F. oxysporum were tested. Plant defence-related chemicals were measured to reveal the biochemical mechanism by which alfalfa responds to pathogen infection and how it is regulated by AMF and rhizobium. Pathogen infection caused typical yellowing of alfalfa leaflets and significantly reduced plant AMF colonization. AMF or rhizobium alone and the co-inoculation reduced the plant disease index by 83Á2, 48Á4 and 81Á8% respectively. Inoculation with AMF or rhizobium alone increased the dry weight of alfalfa by more than 13 and 3 times respectively; it also increased plant chlorophyll content by 65Á6 and 16Á6% respectively. Co-inoculation of AMF and rhizobium induced the plant to accumulate more disease-related antioxidant enzymes, plant hydrolase and plant hormones, such as superoxide dismutase, b-1,3-glucanase, chitinase, and phenylalanine ammonialyase, abscisic acid, ethylene and H 2 O 2 , under pathogen stress. Conclusions: Co-inoculation with F. mosseae and S. medicae offered complementarily improved alfalfa nutrient uptake and growth, which increased plant health. The co-inoculation of AMF and rhizobium regulated plant physiological and biochemical processes and induced plants to produce defence-related compounds, thus decreasing the severity of disease. The simultaneous application of F. mosseae and S. medicae is a potential biocontrol strategy to increase the systemic defence responses of alfalfa to Fusarium wilt. Significance and Impact of the Study: This research showed that complex plant-pathogen interactions are affected by rhizobium and AMF, providing insight into plant-microbiome interactions in the rhizosphere as well as the application of the microbiome in agriculture production.

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An arbuscular mycorrhizal fungus and Epichloë festucae var. lolii reduce Bipolaris sorokiniana disease incidence and improve perennial ryegrass growth

Cited by 43 publications

References 50 publications

The inconspicuous gatekeeper: endophytic Serendipita vermifera acts as extended plant protection barrier in the rhizosphere

The inconspicuous gatekeeper: endophytic Serendipita vermifera acts as extended plant protection barrier in the rhizosphere

Mechanism of application nursery cultivation arbuscular mycorrhizal seedling in watermelon in the field

Dual inoculation of alfalfa ( Medicago sativa L.) with Funnelliformis mosseae and Sinorhizobium medicae can reduce Fusarium wilt

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