Journal Article10.1111/1758-2229.12181
Bacterial seed endophytes: genera, vertical transmission and interaction with plants
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TL;DR: The role of seed-associated microorganisms, and especially seed endophytic bacteria, still is underestimated, but these associations could be beneficial for germination and seedling establishment as seed endophical bacteria are already present in these very early plant growth stages.
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Abstract: Summary
Although the importance of plant-associated microorganisms for plant growth and health was getting more recognition recently, the role of seed-associated microorganisms, and especially seed endophytic bacteria, still is underestimated. Nevertheless, these associations could be beneficial for germination and seedling establishment as seed endophytic bacteria are already present in these very early plant growth stages. Moreover, bacteria with beneficial characteristics can be selected by the plants and could be transferred via the seed to benefit the next generation. In this paper, the current literature concerning bacterial endophytes that have been isolated from seeds of different plant species is reviewed. Their colonization routes, localization inside seeds and mode of transmission as well as their role and fate during germination and seedling development are discussed. At the end, some examples of bacterial seed endophytes with applications as a plant growth-promoting or biocontrol agent are given.
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Citations
Glimpse into the Genomes of Rice Endophytic Bacteria: Diversity and Distribution of Firmicutes.
TL;DR: In the present study, whole genome sequencing of 21 rice seed endophytic bacterial species belonging to the phylum Firmicutes was performed to ascertain their phylogenetic position and to get clue of the genomic signatures for their adaptation toendophytic lifestyle.
Microbiota and Host Nutrition across Plant and Animal Kingdoms.
Stéphane Hacquard,Ruben Garrido-Oter,Antonio González,Stijn Spaepen,Gail Ackermann,Sarah L. Lebeis,Alice C. McHardy,Jeffery L. Dangl,Rob Knight,Ruth Ley,Paul Schulze-Lefert +10 more
TL;DR: It is shown that there is no overlap of abundant bacterial taxa between the microbiotas of the mammalian gut and plant roots, whereas taxa overlap does exist between fish Gut and plant root communities.
Conservation and Dynamics of Maize Seed Endophytic Bacteria Across Progeny Transmission
Kaihui Zhai,Shouxin Zhang,Zhao Cai-hong,Qing Wang,Xiquan Gao +4 more
TL;DR: Maize seeds host a diverse endophytic bacterial community, with a core composition of 16 OTUs, including Ralstonia solanacearum and Delftia tsuruhatensis, that is conserved across three seed generations and enriched in metabolic processes.
Additional file 4 of Insights into the endophytic bacterial community comparison and their potential role in the dimorphic seeds of halophyte Suaeda glauca
Wang Hong-fei,Gao Yan-li,Li Xinyang,Gao Rui,Xie Yuan-guo,LI QiuLi,Li Wen-jun +6 more
- 13 May 2021
TL;DR: This study presents a table (Table S2) detailing the relative abundance of bacterial phyla in Suaeda glauca samples, with a cutoff of 0.01, providing insights into the endophytic bacterial community composition in this halophyte species.
Additional file 4 of Insights into the endophytic bacterial community comparison and their potential role in the dimorphic seeds of halophyte Suaeda glauca
Wang Hong-fei,Gao Yan-li,Li Xinyang,Gao Rui,Xie Yuan-guo,LI QiuLi,Li Wen-jun +6 more
- 13 May 2021
Abstract: Additional file 4: Table S2. The relative abundance of the phylum in each sample (cutoff of 0.01).
References
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TL;DR: Historically, endophytic bacteria have been thought to be weakly virulent plant pathogens but have recently been discovered to have several beneficial effects on host plants, such as plant growth promotion and increased resistance against plant pathogens and parasites.
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Plant growth-promoting bacteria in the rhizo- and endosphere of plants: Their role, colonization, mechanisms involved and prospects for utilization
TL;DR: The individual steps of plant colonization are described and the known mechanisms responsible for rhizosphere and endophytic competence are surveyed to better predict how bacteria interact with plants and whether they are likely to establish themselves in the plant environment after field application as biofertilisers or biocontrol agents.
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TL;DR: The results indicate that plants have different abilities to influence their abundance by changing the structure of their soil communities, and that this is an important regulator of plant community structure.
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TL;DR: Molecular analysis showed that plant defense responses limit bacterial populations inside plants, and delivery of endophytes to the environment or agricultural fields should be carefully evaluated to avoid introducing pathogens.
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