Associations of Pantoea with Rice Plants: As Friends or Foes?

Doni, Febri; Suhaimi, Nurul Shamsinah Mohd; Irawan, Budi; Zeriouh, Mohamed; Mispan, Muhamad Shakirin

doi:10.3390/agriculture11121278

Cited by 19 publications

(16 citation statements)

References 90 publications

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“…Different P. ananatis strains have diverse effects on maize seeds, ranging from weakly pathogenic to beneficial and growth-promoting effects ( Sheibani-Tezerji et al, 2015 ). Interestingly, the pathogenesis of P. ananatis appears to be strain-specific ( Kim et al, 2012 ; Doni et al, 2021 ). Our P. ananatis isolate did not show any pathogenic symptoms in rice seedlings and adult plants.…”

Section: Discussionmentioning

confidence: 99%

Bacterial Endophytes Contribute to Rice Seedling Establishment Under Submergence

et al. 2022

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Flooding events caused by severe rains and poor soil drainage can interfere with plant germination and seedling establishment. Rice is one of the cereal crops that has unique germination strategies under flooding. One of these strategies is based on the fast coleoptile elongation in order to reach the water surface and re-establish the contact with the air. Microorganisms can contribute to plant health via plant growth promoters and provide protection from abiotic stresses. To characterise the community composition of the microbiome in rice germination under submergence, a 16S rRNA gene profiling metagenomic analysis was performed of temperate japonica rice varieties Arborio and Lamone seedlings, which showed contrasting responses in terms of coleoptile length when submerged. This analysis showed a distinct microbiota composition of Arborio seeds under submergence, which are characterised by the development of a long coleoptile. To examine the potential function of microbial communities under submergence, culturable bacteria were isolated, identified and tested for plant growth-promoting activities. A subgroup of isolated bacteria showed the capacity to hydrolyse starch and produce indole-related compounds under hypoxia. Selected bacteria were inoculated in seeds to evaluate their effect on rice under submergence, showing a response that is dependent on the rice genotype. Our findings suggest that endophytic bacteria possess plant growth-promoting activities that can substantially contribute to rice seedling establishment under submergence.

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Section: Discussionmentioning

confidence: 99%

Bacterial Endophytes Contribute to Rice Seedling Establishment Under Submergence

et al. 2022

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“…It was previously reported that this microorganism is useful as a biocontrol agent for black rot in sweet potatoes [27]. In addition, several members of the genus have been potentially found to enhance growth and yield, control plant pathogenic microbes, and increase abiotic tolerance in rice plants [28]. To our knowledge, this is the first report describing the isolation of bacterial species from healthy wood of Aquilaria crassna with rapid detection method.…”

Section: Sequence Analysis Of the 16s Rrna Gene And Phylogenetic Anal...mentioning

confidence: 99%

Identification of bacterial species from healthy wood of Aquilaria crassna using colony PCR

et al. 2022

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Agarwood is one of the most expensive, sacred and valuable woods used in the biotechnology industry. This natural raw material is in high demand as a commodity and can be used to manufacture a variety of products. Isolating a microbe from its environment is crucial because several bacterial strains can produce novel compounds for biotechnological applications. Exploration of bacterial strains, such as bacterial endophytes, has been associated with bioactive compounds of the agarwood plant. The purpose of this study was to isolate and identify bacteria from Agarwood trees in the Kaeng Hang Maeo Sub-district of Chanthaburi Province, Thailand by using molecular biology techniques. A colony PCR technique without prior DNA extraction for rapid and simple detection of bacteria was performed. After the DNA sequence analysis, the results showed that most populations in the normal layer are belonged to Pantoea dispersa (99%). Through analysis of phylogenetic tree by neighbor-joining method, the sequences of the 16s rRNA gene were analyzed to understand evolutionary relationships of bacteria found in agarwood. In conclusion, good amplification of the 16s rRNA sequence (1.5 kb) was detected with the specificity of the target sequences of the 16s RNA. In addition, the isolated bacterial strains are the most common species in agarwood, however, there has been no previous research on isolating these bacterial strains in Aquilaria crassna.

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“…oryzae and Pantoea spp. is a major disease faced by rice growers in many countries, causing significant economic losses in rice yield world-wide, since the yield loss due to leaf blight can be more than 70% [ 16 , 130 ]. Over the years, many microbial inoculants have been evaluated as potential biocontrol agents against various bacterial diseases.…”

Section: Services Of Microbes In Protecting Rice Plants Against Plant Diseasesmentioning

confidence: 99%

“… Excessive use of biocides and chemical fertilizers resulted in the severe outbreaks of various rice diseases in Selangor, Malaysia: ( a ) Rice plants infected by Pantoea spp. with a yellowish leaf blight disease lesion on the leaves that leads to unfilled, empty, and discolored grains (photo courtesy of Muhammad Nazri Ishak), ( b ) Close-up view of the infected leaf with a lesion at the edge (adapted from Doni et al [ 16 ], the journal does not require permission to use materials), ( c ) Typical field symptoms of bacterial panicle blight caused by Burkholderia glumae with discoloration and sterility of grain as well as rotting and panicle blanking, ( d ) A close look at the severely infected panicle. The panicle remains upright rather than bending down with the weight of the grain (photo courtesy of Nurul Shamsinah Mohd Suhaimi).…”

Section: Figurementioning

confidence: 99%

“…The complex, structured, and interconnected microbial networks that exist in and around plants consist of many different taxa with complementary roles. Keystone species have been identified that are crucial for plant health and ecosystem functioning so that underground ecosystems parallel the ecological complexity and interdependence found above-ground [ 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

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Microbial Contributions for Rice Production: From Conventional Crop Management to the Use of ‘Omics’ Technologies

Doni

Suhaimi

Mispan

et al. 2022

IJMS

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Rice, the main staple food for about half of the world’s population, has had the growth of its production stagnate in the last two decades. One of the ways to further improve rice production is to enhance the associations between rice plants and the microbiome that exists around, on, and inside the plant. This article reviews recent developments in understanding how microorganisms exert positive influences on plant growth, production, and health, focusing particularly on rice. A variety of microbial species and taxa reside in the rhizosphere and the phyllosphere of plants and also have multiple roles as symbiotic endophytes while living within plant tissues and even cells. They alter the morphology of host plants, enhance their growth, health, and yield, and reduce their vulnerability to biotic and abiotic stresses. The findings of both agronomic and molecular analysis show ways in which microorganisms regulate the growth, physiological traits, and molecular signaling within rice plants. However, many significant scientific questions remain to be resolved. Advancements in high-throughput multi-omics technologies can be used to elucidate mechanisms involved in microbial–rice plant associations. Prospectively, the use of microbial inoculants and associated approaches offers some new, cost-effective, and more eco-friendly practices for increasing rice production.

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Associations of Pantoea with Rice Plants: As Friends or Foes?

Cited by 19 publications

References 90 publications

Bacterial Endophytes Contribute to Rice Seedling Establishment Under Submergence

Bacterial Endophytes Contribute to Rice Seedling Establishment Under Submergence

Identification of bacterial species from healthy wood of Aquilaria crassna using colony PCR

Microbial Contributions for Rice Production: From Conventional Crop Management to the Use of ‘Omics’ Technologies

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