Endophytic colonization of Arabidopsis thaliana by Gluconacetobacter diazotrophicus and its effect on plant growth promotion, plant physiology, and activation of plant defense

2015 ◽  
Vol 399 (1-2) ◽  
pp. 257-270 ◽  
Author(s):  
A. L. S. Rangel de Souza ◽  
S. A. De Souza ◽  
M. V. V. De Oliveira ◽  
T. M. Ferraz ◽  
F. A. M. M. A. Figueiredo ◽  
...  
Keyword(s):  
Plant Physiology ◽  
Arabidopsis Thaliana ◽  
Plant Growth ◽  
Plant Defense ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Gluconacetobacter Diazotrophicus ◽  
Endophytic Colonization

scholarly journals Streptomyces consortia-mediated plant defense against Fusarium wilt and plant growth-promotion in chickpea

2021 ◽  
pp. 104961
Author(s):  
Sravani Ankati ◽  
Vadlamudi Srinivas ◽  
Sambangi Pratyusha ◽  
Subramaniam Gopalakrishnan
Keyword(s):  
Plant Growth ◽  
Plant Defense ◽  
Fusarium Wilt ◽  
Plant Growth Promotion ◽  
Growth Promotion

scholarly journals Characterization of Selected Plant Growth-Promoting Rhizobacteria and Their Non-Host Growth Promotion Effects

2021 ◽  
Author(s):  
Di Fan ◽  
Donald L. Smith
Keyword(s):  
Arabidopsis Thaliana ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Plant Growth Promoting Rhizobacteria ◽  
Content Type ◽  
Host Growth ◽  
Plant Growth Promoting ◽  
Growth Promoting

There are pressing needs to reduce the use of agrochemicals, and PGPR are receiving increasing interest in plant growth promotion and disease protection. This study follows up our previous report that the four newly isolated rhizobacteria promote the growth of Arabidopsis thaliana .

scholarly journals Plantibacter flavus, Curtobacterium herbarum, Paenibacillus taichungensis, and Rhizobium selenitireducens Endophytes Provide Host-Specific Growth Promotion of Arabidopsis thaliana, Basil, Lettuce, and Bok Choy Plants

2019 ◽  
Vol 85 (19) ◽  
Author(s):  
Evan Mayer ◽  
Patricia Dörr de Quadros ◽  
Roberta Fulthorpe
Keyword(s):  
Arabidopsis Thaliana ◽  
Plant Growth ◽  
Root Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Plant Growth Promoting Bacteria ◽  
Bacterial Endophytes ◽  
Content Type ◽  
Plant Growth Promoting ◽  
Growth Promoting

ABSTRACT A collection of bacterial endophytes isolated from stem tissues of plants growing in soils highly contaminated with petroleum hydrocarbons were screened for plant growth-promoting capabilities. Twenty-seven endophytic isolates significantly improved the growth of Arabidopsis thaliana plants in comparison to that of uninoculated control plants. The five most beneficial isolates, one strain each of Curtobacterium herbarum, Paenibacillus taichungensis, and Rhizobium selenitireducens and two strains of Plantibacter flavus were further examined for growth promotion in Arabidopsis, lettuce, basil, and bok choy plants. Host-specific plant growth promotion was observed when plants were inoculated with the five bacterial strains. P. flavus strain M251 increased the total biomass and total root length of Arabidopsis plants by 4.7 and 5.8 times, respectively, over that of control plants and improved lettuce and basil root growth, while P. flavus strain M259 promoted Arabidopsis shoot and root growth, lettuce and basil root growth, and bok choy shoot growth. A genome comparison between P. flavus strains M251 and M259 showed that both genomes contain up to 70 actinobacterial putative plant-associated genes and genes involved in known plant-beneficial pathways, such as those for auxin and cytokinin biosynthesis and 1-aminocyclopropane-1-carboxylate deaminase production. This study provides evidence of direct plant growth promotion by Plantibacter flavus. IMPORTANCE The discovery of new plant growth-promoting bacteria is necessary for the continued development of biofertilizers, which are environmentally friendly and cost-efficient alternatives to conventional chemical fertilizers. Biofertilizer effects on plant growth can be inconsistent due to the complexity of plant-microbe interactions, as the same bacteria can be beneficial to the growth of some plant species and neutral or detrimental to others. We examined a set of bacterial endophytes isolated from plants growing in a unique petroleum-contaminated environment to discover plant growth-promoting bacteria. We show that strains of Plantibacter flavus exhibit strain-specific plant growth-promoting effects on four different plant species.

Study of mechanisms for plant growth promotion elicited by rhizobacteria in Arabidopsis thaliana

2005 ◽  
Vol 268 (1) ◽  
pp. 285-292 ◽  
Author(s):  
Choong-Min Ryu ◽  
Chia-Hui Hu ◽  
Robert D. Locy ◽  
Joseph W. Kloepper
Keyword(s):  
Arabidopsis Thaliana ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion

scholarly journals Genome-wide Association Studies Reveal Important Candidate Genes for the Bacillus pumilus TUAT-1-Arabidopsis thaliana Interaction

2020 ◽  
Author(s):  
Marina Soneghett Cotta ◽  
Fernanda Plucani do Amaral ◽  
Leonardo Magalhães Cruz ◽  
Roseli Wassem ◽  
Fábio de Oliveira Pedrosa ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Root Architecture ◽  
Bacillus Pumilus ◽  
Growth Promotion ◽  
Root Traits ◽  
Genome Wide Association ◽  
Genome Wide Association Studies ◽  
Genome Wide

ABSTRACTThe plant growth promoting bacterium (PGPB) Bacillus pumilus TUAT-1 is an indole acetic acid producer that can increase plant growth. Inoculation with this strain has been shown to confer greater plant tolerance to drought and saline conditions. Although the ability of TUAT-1 to enhance plant growth is well documented, little is known about what mechanisms underlie the plant response to this bacterium. Applying genome-wide association study (GWAS), we evaluated the interaction between TUAT-1 and Arabidopsis thaliana, screening 288 plant ecotypes for root architecture traits comparing non-inoculated and inoculated plants. Most of the ecotypes were significantly affected by TUAT-1 inoculation (66.7%) for at least one of the root traits measured. For example, some ecotypes responded positively increasing root growth while others showed reduced growth upon inoculation. A total of 96 ecotypes (33.3%) did not respond significantly to PGPB inoculation. These results are consistent with the widely reported strain-genotype specificity shown in many plant-microbe interactions. The GWAS analysis revealed significant SNPs associated to specific root traits leading to identification of several genes putatively involved in enabling the Bacillus pumilus TUAT-1 and A. thaliana association and contributing to plant growth promotion. Our results show that root architecture features are genetic separable traits associated with plant growth in association with TUAT-1. Our findings validate previous reported genes involved in Bacillus spp.-plant interaction, growth promotion and highlight potential genes involved in plant microbe interaction. We suggest that plant-bacterial interaction and the plant growth promotion are quantitative and multigenic traits. This knowledge expands our understanding of the functional mechanisms driving plant growth promotion by PGPB.

Sign in / Sign up

Export Citation Format

Share Document