Evaluation of the effects of spores and their heat-treated residues from different <i>Bacillus</i> strains on the initial growth of rice plants

Seerat, Ali Yawar; Ookawa, Taiichiro; Kojima, Katsuhiro; Ohkama‐Ohtsu, Naoko; Maeda, Masumi; Djedidi, Salem; Habibi, Safiullah; Sekimoto, Hitoshi; Abe, Akira; Yokoyama, Tadashi

doi:10.1080/00380768.2018.1551042

Cited by 11 publications

(11 citation statements)

References 48 publications

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“…Thirty 21-day-old seedlings were randomly selected from three locations in each nursery tray, and the following data were recorded: shoot length, and shoot and root fresh and dry weight. For the purpose of root colonization, we used a TUAT-1 strain with antibiotic resistance to streptomycin and rifampicin [27]. Colonization was examined using 15 plants randomly sampled and combined (Table 1).…”

Section: Methodsmentioning

confidence: 99%

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Influence of rice-husk biochar and Bacillus pumilus strain TUAT-1 on yield, biomass production, and nutrient uptake in two forage rice genotypes

et al. 2019

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Biochar is widely used as a soil amendment to increase crop yields. However, the impact of the interaction between the biochar and microbial inoculants (e.g., biofertilizer) on plant nutrient uptake and yield in forage rice is not fully understood. A greenhouse study was conducted to evaluate the synergistic effects of rice-husk biochar and Bacillus pumilus strain TUAT-1 biofertilizer application on growth, yield, and nutrient uptake in two forage rice genotypes; Fukuhibiki and the newly bred line, LTAT-29. Positive effects of biochar and biofertilizer, alone or in a combination, on growth traits, nutrient uptake, and yield components were dependent on the rice genotypes. Biochar and TUAT-1 biofertilizer influenced the overall growth of plants positively and increased straw and above-ground biomass in both genotypes. However, although biochar application significantly increased grain yield in LTAT-29, this was not the case in Fukuhibiki. Biochar and TUAT-1 biofertilizer, either alone or combined, significantly affected plant nutrient uptake but the effect largely depended on rice genotype. Results of this study indicate that biochar amendment and TUAT-1 biofertilizer can enhance forage rice productivity depending on genotypes, and therefore, there is a need to consider plant genetic composition when evaluating the potential for crop response to these soil amendments before application on a commercial scale.

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Section: Methodsmentioning

confidence: 99%

“…One gram of fresh root was crushed under sterile conditions in 10 ml of phosphate buffer, using a pestle and mortar. The suspension was serially diluted and spread on TSA medium with 100 mg L −1 of streptomycin and rifampicin [27]. The plates were incubated at 28°C for 24 h before determining the CFU mL −1 .…”

Section: Methodsmentioning

confidence: 99%

Influence of rice-husk biochar and Bacillus pumilus strain TUAT-1 on yield, biomass production, and nutrient uptake in two forage rice genotypes

et al. 2019

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“…Genome analysis of TUAT1 revealed the presence of several genes that have been reported to be involved in the plant growth promotion effects, including those involved in indole-3-acetic acid synthesis ( ysnE , locus tag BTUAT1_32950, and yhcX, BTUAT1_08910), siderophore biosynthesis protein (BTUAT1_10350), or acetoin metabolism ( acuABC , locus tags BTUAT1_26940, BTUAT1_26950, and BTUAT1_26960). Interestingly, our preliminary experiments indicated that the spore of TUAT1 exhibited a higher plant growth promotion activity than vegetative cells of TUAT1 (10). Understanding of sporulation and its regulation in TUAT1 would contribute to the development of a better inoculant using TUAT1.…”

Section: Announcementmentioning

confidence: 99%

Complete Genome Sequence of Plant Growth-Promoting Bacillus pumilus TUAT1

Okazaki

Sano

Yamada

et al. 2019

Microbiol Resour Announc

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“…Although the root-colonizing capacity of Lysinibacillus strains was not investigated in the present study, strain GIC41 may have colonized the spinach roots more efficiently than the other strains and continuously secreted IAA into the rhizosphere; therefore, this strain exerted stronger and more stable PGP effects than the other strains. Moreover, previous studies reported that nutrients released from the dead cells of introduced PGPB were taken up by plants and increased their biomass ( Macedo-Raygoza et al , 2019 ; Seerat et al , 2019 ). Therefore, in addition to the direct growth stimulation via IAA production, a certain proportion of cells may die as GIC41 continues to proliferate around spinach roots, and spinach plants utilize the nutrients released from these dead cells, which results in a significant increase in shoot biomass.…”

Section: Discussionmentioning

confidence: 99%

<i>Lysinibacillus xylanilyticus</i> Strain GIC41 as a Potential Plant Biostimulant

et al. 2021

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To identify Lysinibacillus strains with the potential to function as plant biostimulants, we screened 10 previously isolated Lysinibacillus strains from the rhizosphere and soil for their plant growth-promoting (PGP) effects. In vitro tests showed that all strains produced indole-3-acetic acid. In primary screening, the PGP effects of these strains were assessed on spinach seedlings grown on Jiffy-7 pellets; strains GIC31, GIC41, and GIC51 markedly promoted shoot growth. In secondary screening, the PGP efficacies of these three strains were examined using spinach seedlings grown in pots under controlled conditions. Only GIC41 exerted consistent and significant PGP effects; therefore, it was selected for subsequent experiments. The results of 6-week glasshouse experiments revealed that GIC41 markedly increased shoot dry weight by ca. 12–49% over that of the control. The impact of fertilization levels on the PGP efficacy of GIC41 was investigated using pot experiments. The application of a specific level of fertilizer was required for the induction of sufficient PGP effects by this strain. The phylogenetic analysis based on the 16S rDNA sequence identified GIC41 as L. xylanilyticus . Collectively, these results show the potential of strain GIC41 to function as a plant biostimulant.

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Evaluation of the effects of spores and their heat-treated residues from different Bacillus strains on the initial growth of rice plants

Cited by 11 publications

References 48 publications

Influence of rice-husk biochar and Bacillus pumilus strain TUAT-1 on yield, biomass production, and nutrient uptake in two forage rice genotypes

Influence of rice-husk biochar and Bacillus pumilus strain TUAT-1 on yield, biomass production, and nutrient uptake in two forage rice genotypes

Complete Genome Sequence of Plant Growth-Promoting Bacillus pumilus TUAT1

<i>Lysinibacillus xylanilyticus</i> Strain GIC41 as a Potential Plant Biostimulant

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