Differential bacterial endophytome in Foc‐resistant banana cultivar displays enhanced antagonistic activity against Fusarium oxysporum f.sp. cubense (Foc)

Saravanan, R; Nakkeeran, S.; Nallusamy, Saranya; Shanmugam, Haripriya; Mathiyazhagan, Kavino; Anandham, Rangasamy; Subbiah, Krishnamoorthy Akkanna; Ganesan, Malathi Varagur

doi:10.1111/1462-2920.15800

Cited by 21 publications

(10 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was reported that B. paraconglomeratum YEBPT2 isolated from banana contributed to antifungal activity against Fusarium oxysporum f.sp. cubense (Foc), and nine bioactive metabolites were identified as diethyl hydrazine, carbonic acid, nitrosopyrrolidine, 4H-pyran, valeric acid, butanoic acid, trioxsalen, deoxy-d-mannoic acid, and amino caprylic acid [ 32 ].…”

Section: Discussionmentioning

confidence: 99%

Observation of the Antimicrobial Activities of Two Actinomycetes in the Harvester Ant Messor orientalis

Liu

et al. 2022

Insects

View full text Add to dashboard Cite

Observations have shown that seeds collected by harvester ants are less likely to mold. Based on evolutionary analysis and other research, it was hypothesized that harvester ants could apply actinomycetes to protect seeds, similar to the protection of mutualistic fungi by leafcutter ants. Two actinomycetes were successfully isolated from the harvester ant Messor orientalis. The taxonomic status of the actinomycetes was determined by 16S rRNA sequence analysis and biochemical experimental observations. Their inhibitory effects on plant pathogens were measured. One of the bacteria was identified as Brachybacterium phenoliresistens and denoted as B. phenoliresistens MO. The other belonged to the genus Microbacterium. It was named Microbacterium sp. Growth rate determination and coculture experiments were performed to explore the inhibitory effect of actinomycetes on indicator plant pathogens. The inhibition rates of the actinomycetes toward Peronophythora litchii and Rhizoctonia solani were 100% in media containing 30% or more fermentation broth, and they also showed an inhibitory effect on Colletotrichum siamense. The coculture experiment supported this result by showing that the growth of P. litchii and R. solani was inhibited in the presence of actinomycetes. Therefore, the results of this study show the agricultural application potential of these bacteria and may provide a reference for research on the symbiosis of harvester ants with actinomycetes.

show abstract

Section: Discussionmentioning

confidence: 99%

Observation of the Antimicrobial Activities of Two Actinomycetes in the Harvester Ant Messor orientalis

Liu

et al. 2022

Insects

View full text Add to dashboard Cite

show abstract

“…Knowledge of soil and rhizosphere microbial diversity and composition is hence fundamental to implement sustainable crop management, as well as to determine the impact of one or more biological/technical factors on the indigenous BCA. Progress has been achieved in determining the links between Fusarium wilt and banana-associated microorganisms (Effendi et al, 2019 ; Kaushal et al, 2020 ; Gómez-Lama Cabanás et al, 2021 ; Ravi et al, 2021 ). However, the potential of soil microorganisms to manage plant production in a more sustainable way, relying solely on indigenous species, is not yet fully exploited.…”

Section: Introductionmentioning

confidence: 99%

“…Beneficial microorganisms that contribute to plant production include species acting as generalists or, on the contrary, inhabiting specific trophic niches, ranging from endophytes to pathogens or BCA, which affect plant health and thus farm productivity (Bulgarelli et al, 2013 ; Xue et al, 2015 ; Granzow et al, 2017 ; Kaushal et al, 2020 ; Zhang et al, 2020 ; Gómez-Lama Cabanás et al, 2021 ; Ravi et al, 2021 ). Apart from plant growth promoters, soil harbors endosymbionts or BCA often specifically associated with their hosts.…”

Section: Introductionmentioning

confidence: 99%

Rhizosphere 16S-ITS Metabarcoding Profiles in Banana Crops Are Affected by Nematodes, Cultivation, and Local Climatic Variations

Ciancio

Rosso

Borrego³

et al. 2022

Front. Microbiol.

View full text Add to dashboard Cite

Agriculture affects soil and root microbial communities. However, detailed knowledge is needed on the effects of cropping on rhizosphere, including biological control agents (BCA) of nematodes. A metabarcoding study was carried out on the microbiota associated with plant parasitic and other nematode functional groups present in banana farms in Tenerife (Canary Islands, Spain). Samples included rhizosphere soil from cv Pequeña Enana or Gruesa and controls collected from adjacent sites, with the same agroecological conditions, without banana roots. To characterize the bacterial communities, the V3 and V4 variable regions of the 16S rRNA ribosomal gene were amplified, whereas the internal transcribed spacer (ITS) region was used for the fungi present in the same samples. Libraries were sequenced with an Illumina MiSeq™ in paired ends with a 300-bp read length. For each sample, plant parasitic nematodes (PPN) and other nematodes were extracted from the soil, counted, and identified. Phytoparasitic nematodes were mostly found in banana rhizosphere. They included Pratylenchus goodeyi, present in northern farms, and Helicotylenchus spp., including H. multicinctus, found in both northern and southern farms. Metabarcoding data showed a direct effect of cropping on microbial communities, and latitude-related factors that separated northern and southern controls from banana rizosphere samples. Several fungal taxa known as nematode BCA were identified, with endophytes, mycorrhizal species, and obligate Rozellomycota endoparasites, almost only present in the banana samples. The dominant bacterial phyla were Proteobacteria, Actinobacteria, Planctomycetes, Bacteroidetes, Chloroflexi, and Acidobacteria. The ITS data showed several operational taxonomic units (OTUs) belonging to Sordariomycetes, including biocontrol agents, such as Beauveria spp., Arthrobotrys spp., Pochonia chlamydosporia, and Metarhizium anisopliae. Other taxa included Trichoderma harzianum, Trichoderma longibrachiatum, Trichoderma virens, and Fusarium spp., together with mycoparasites such as Acrostalagmus luteoalbus. However, only one Dactylella spp. showed a correlation with predatory nematodes. Differences among the nematode guilds were found, as phytoparasitic, free-living, and predatory nematode groups were correlated with specific subsets of other bacteria and fungi. Crop cultivation method and soil texture showed differences in taxa representations when considering other farm and soil variables. The data showed changes in the rhizosphere and soil microbiota related to trophic specialization and specific adaptations, affecting decomposers, beneficial endophytes, mycorrhizae, or BCA, and plant pathogens.

show abstract

“…cubense antifungal activity in resistant and susceptible banana cultivars. A study in this issue examined the diversity of cultivable bacterial endophytes by isolating them from resistant Yengambi KM5 (AAA) and susceptible Ney Poovan (AB) banana cultivars (Ravi et al ., 2021). This study reported that 56 cultivable bacterial endophytes and six nectar‐associated bacteria were present in YKM5 and 31 cultivable bacterial endophytes within Ney Poovan.…”

mentioning

confidence: 99%

The assessment of microbial ecology: a special emphasis on the Indian scenario

Lal

Singh

Sarkar

et al. 2022

Environ Microbiol Rep

View full text Add to dashboard Cite

Differential bacterial endophytome in Foc‐resistant banana cultivar displays enhanced antagonistic activity against Fusarium oxysporum f.sp. cubense (Foc)

Cited by 21 publications

References 46 publications

Observation of the Antimicrobial Activities of Two Actinomycetes in the Harvester Ant Messor orientalis

Observation of the Antimicrobial Activities of Two Actinomycetes in the Harvester Ant Messor orientalis

Rhizosphere 16S-ITS Metabarcoding Profiles in Banana Crops Are Affected by Nematodes, Cultivation, and Local Climatic Variations

The assessment of microbial ecology: a special emphasis on the Indian scenario

Contact Info

Product

Resources

About