Root-Associated Endophytic Bacterial Community Composition of Asparagus officinalis of Three Different Varieties

Su, Zhuowen; Cai, Shulin; Liu, Jianbin; Zhao, Juan; Liu, Ya; Yin, Jiong; Zhang, Dianpeng

doi:10.1007/s12088-021-00926-6

Cited by 7 publications

(4 citation statements)

References 43 publications

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“…Virgisporangium belongs to the Actinobacteriota , specifically within the Micromonosporaceae , and it is frequently found in tropical and subtropical soils [ 91 ]. Moreover, Virgisporangium has been identified as an endophyte in the roots of various plants, including desert shrubs [ 92 ], wheat [ 93 ], grass [ 52 ], and Asparagus officinalis [ 94 ]. Notably, the abundance of Virgisporangium has been observed to significantly increase when the host plants were treated with gibberellic acid (GA) [ 95 ] and nitrogen [ 96 ], respectively.…”

Section: Discussionmentioning

confidence: 99%

Core Endophytic Bacteria and Their Roles in the Coralloid Roots of Cultivated Cycas revoluta (Cycadaceae)

Liu,

Xu,

Wang

et al. 2023

Microorganisms

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As a gymnosperm group, cycads are known for their ancient origin and specialized coralloid root, which can be used as an ideal system to explore the interaction between host and associated microorganisms. Previous studies have revealed that some nitrogen-fixing cyanobacteria contribute greatly to the composition of the endophytic microorganisms in cycad coralloid roots. However, the roles of host and environment in shaping the composition of endophytic bacteria during the recruitment process remain unclear. Here, we determined the diversity, composition, and function prediction of endophytic bacteria from the coralloid roots of a widely cultivated cycad, Cycas revoluta Thunb. Using next-generation sequencing techniques, we comprehensively investigated the diversity and community structure of the bacteria in coralloid roots and bulk soils sampled from 11 sites in China, aiming to explore the variations in core endophytic bacteria and to predict their potential functions. We found a higher microbe diversity in bulk soils than in coralloid roots. Meanwhile, there was no significant difference in the diversity and composition of endophytic bacteria across different localities, and the same result was found after removing cyanobacteria. Desmonostoc was the most dominant in coralloid roots, followed by Nostoc, yet these two cyanobacteria were not shared by all samples. Rhodococcus, Edaphobacter, Niastella, Nordella, SH-PL14, and Virgisporangium were defined as the core microorganisms in coralloid roots. A function prediction analysis revealed that endophytic bacteria majorly participated in the plant uptake of phosphorus and metal ions and in disease resistance. These results indicate that the community composition of the bacteria in coralloid roots is affected by both the host and environment, in which the host is more decisive. Despite the very small proportion of core microbes, their interactions are significant and likely contribute to functions related to host survival. Our study contributes to an understanding of microbial diversity and composition in cycads, and it expands the knowledge on the association between hosts and symbiotic microbes.

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Section: Discussionmentioning

confidence: 99%

Core Endophytic Bacteria and Their Roles in the Coralloid Roots of Cultivated Cycas revoluta (Cycadaceae)

Liu,

Xu,

Wang

et al. 2023

Microorganisms

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“…The stress tolerance in the isolated microflora has revealed the more significant role of these endosymbiosiome entities shortly in changing global climate scenarios 54 – 59 . The stress tolerance in the bacteria can be attributed to many factors, like temperature, water, and other indigenous factors of the bacterial niche from which they are isolated 60 . Therefore, the possible reason to stress tolerance in the isolated microflora of the present investigation could be that the isolation in the present study was done where the temperature goes as high as 35 °C in the active growing season of B. rapa and during winters, the frozen environment causes the water deficit conditions and as such the associated microflora has evolved to challenge this stress.…”

Section: Discussionmentioning

confidence: 99%

Dynamics, phylogeny and phyto-stimulating potential of chitinase synthesizing bacterial root endosymbiosiome of North Western Himalayan Brassica rapa L.

Padder

Rather

Bhat

et al. 2022

Sci Rep

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The less phytopathogen susceptibility in Himalayan Brassica rapa L. has made it an exceptional crop eluding synthetic pesticide inputs, thereby guarantying economically well-founded and ecologically sustainable agriculture. The relevance of niche microflora of this crop has not been deliberated in this context, as endosymbiosiome is more stable than their rhizosphere counterparts on account of their restricted acquaintance with altering environment; therefore, the present investigation was carried out to study the endophytic microfloral dynamics across the B. rapa germplasm in context to their ability to produce chitinase and to characterize the screened microflora for functional and biochemical comportments in relevance to plant growth stimulation. A total of 200 colonies of bacterial endophytes were isolated from the roots of B. rapa across the J&K UT, comprising 66 locations. After morphological, ARDRA, and sequence analysis, eighty-one isolates were selected for the study, among the isolated microflora Pseudomonas sp. Bacillus sp. dominated. Likewise, class γ-proteobacteria dominated, followed by Firmicutes. The diversity studies have exposed changing fallouts on all the critical diversity indices, and while screening the isolated microflora for chitinase production, twenty-two strains pertaining to different genera produced chitinase. After carbon source supplementation to the chitinase production media, the average chitinase activity was significantly highest in glycerol supplementation. These 22 strains were further studied, and upon screening them for their fungistatic behavior against six fungal species, wide diversity was observed in this context. The antibiotic sensitivity pattern of the isolated strains against chloramphenicol, rifampicin, amikacin, erythromycin, and polymyxin-B showed that the strains were primarily sensitive to chloramphenicol and erythromycin. Among all the strains, only eleven produced indole acetic acid, ten were able to solubilize tricalcium phosphate and eight produced siderophores. The hydrocyanic acid and ammonia production was observed in seven strains each. Thus, the present investigation revealed that these strains could be used as potential plant growth promoters in sustainable agriculture systems besides putative biocontrol agents.

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“…Plants may benefit from endophytic bacteria associated with roots. However, the composition of the endophytic bacterial community associated with asparagus roots is challenging to elucidate [56]. Spider Plant is characterised by high biomass yield, easy cultivation, intense competitiveness, and wide geographical distribution [55].…”

Section: Spider Plantmentioning

confidence: 99%

Small-scale botanical in enhancing indoor air quality: A bibliometric analysis (2011-2020) and short review

Tan

Wong²,

Kek³

et al. 2022

PROGEE

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Poor indoor air quality (IAQ) has developed a positive relationship with human health risks. Recently, research findings reported that the pollution level of indoor air could be 2 – 5 times higher than the outdoor air. In some studies, the poor IAQ could reach up to 100 times or more in a natural/ mechanical ventilated building. IAQ depends heavily on the ambient air quality and pollutants/ contaminants produced by household activities. Poor IAQ could lead to various health issues, i.e., asthma, lung cancer, dizziness, fatigue, headaches, etc. One of the possible solutions to overcome the poor IAQ problem is the utilisation of indoor botanical to improve the IAQ. The phytoremediation of botanical is an affordable and environmentally friendly approach to purify the polluted indoor air. Although there is no established recommendation for determining the best indoor botanical in improving the IAQ, many studies have revealed the ability of specific indoor botanicals to remove pollutants/ contaminants. This paper presents the bibliometric analysis and short review based on 79 publications issued in 2011 – 2021. Those articles were extracted from the Web of Science database. Based on the analysis, the number of publications has increased significantly starting from the year 2017. Indoor Air was identified as one of the top productive journals for this research topic.

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Root-Associated Endophytic Bacterial Community Composition of Asparagus officinalis of Three Different Varieties

Cited by 7 publications

References 43 publications

Core Endophytic Bacteria and Their Roles in the Coralloid Roots of Cultivated Cycas revoluta (Cycadaceae)

Core Endophytic Bacteria and Their Roles in the Coralloid Roots of Cultivated Cycas revoluta (Cycadaceae)

Dynamics, phylogeny and phyto-stimulating potential of chitinase synthesizing bacterial root endosymbiosiome of North Western Himalayan Brassica rapa L.

Small-scale botanical in enhancing indoor air quality: A bibliometric analysis (2011-2020) and short review

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