Characterizing endophytic competence and plant growth promotion of bacterial endophytes inhabiting the seed endosphere of Rice

BMC Microbiology
Denver I WalitangTongmin Sa

Abstract

Rice (Oryza sativa L. ssp. indica) seeds as plant microbiome present both an opportunity and a challenge to colonizing bacterial community living in close association with plants. Nevertheless, the roles and activities of bacterial endophytes remain largely unexplored and insights into plant-microbe interaction are compounded by its complexity. In this study, putative functions or physiological properties associated with bacterial endophytic nature were assessed. Also, endophytic roles in plant growth and germination that may allow them to be selectively chosen by plants were also studied. The cultivable seed endophytes were dominated by Proteobacteria particularly class Gammaproteobacteria. Highly identical type strains were isolated from the seed endosphere regardless of the rice host's physiological tolerance to salinity. Among the type strains, Flavobacterium sp., Microbacterium sp. and Xanthomonas sp. were isolated from the salt-sensitive and salt-tolerant cultivars. PCA-Biplot ordination also showed that specific type strains isolated from different rice cultivars have distinguishing similar characteristics. Flavobacterium sp. strains are phosphate solubilizers and indole-3-acetic acid producers with high tolerance to sal...Continue Reading

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Citations

Oct 15, 2019·Molecular Plant-microbe Interactions : MPMI·Susan MosquitoVittorio Venturi
Oct 14, 2019·Journal of Applied Microbiology·Yumei DaiTao Wang
Oct 22, 2019·Molecular Plant-microbe Interactions : MPMI·Davide GernaIlse Kranner
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Aug 31, 2021·World Journal of Microbiology & Biotechnology·Gisela Manuela de França BettencourtCarlos Ricardo Soccol
Jan 5, 2022·Current Microbiology·Santosh Kumar JanaSukhendu Mandal
Dec 28, 2021·FEMS Microbiology Ecology·Zayda P Morales MoreiraJames J Germida

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Datasets Mentioned

BETA
KY393309-KY393357

Methods Mentioned

BETA
PCR
salt stress
deamination

Software Mentioned

SPSS
SAS
CLUSTAL W
Primer
MEGA
BLAST

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