Characterization of endophytic bacteria isolated from wild rice plants in the Mekong Delta, Vietnam DOI Open Access

Quach Văn Cao Thi,

NGUYEN LU KHOI MINH,

Nguyen Phuong Thuy

et al.

Biodiversitas Journal of Biological Diversity, Journal Year: 2024, Volume and Issue: 25(6)

Published: June 27, 2024

Abstract. Thi QVC, Minh NLK, Thuy NP, Tat TQ, Tran T. 2024. Characterization of endophytic bacteria isolated from wild rice plants in the Mekong Delta, Vietnam. Biodiversitas 25: 2576-2585. Endophytic bring many benefits to plants, such as stimulating plant growth and inhibiting microbial pathogens that cause diseases. Hence, this investigation aimed evaluate association with (Oryza rufipogon) can fix nitrogen, solubilize phosphorus produce indole-3-acetic acid (IAA). Twelve-five bacterial strains were recovered stems roots collected Vinh Long Tien Giang provinces Delta. Among these strains, six had solubilizing seven nitrogen-fixing activity. Strain BR3.5 fixed highest i.e. ammonia (NH4+) content 0.109 ± 0.002 mg/L after eight-day incubation. However, solubilization was recorded two isolates, RR3.7 RR1.1, clear zone diameters 0.800 0.020 mm 0.030 mm, respectively. In addition, could synthesize IAA, BR2.5 produced highest, i.e., 0.067 ?g/mL, IAA Notably, strain exhibited multiple activities like nitrogen fixation (0.109 mg/L), (1.02 mm), synthesis (0.056 0.00 ?g/mL). identified Pantoea sp. based on 16S rRNA gene sequencing (92.69% similarity) together morpho-physiological biochemical characteristics. The findings indicate may be used for production biofertilizers farming.

Language: Английский

Mitigation of salinity stress in salt‐sensitive rice seedlings via phytohormone synthesis, antioxidant defence enhancement, and ion balance regulation induced by 5‐aminolevulinic acid‐producing purple non‐sulfur bacteria DOI Open Access
Laurence Shiva Sundar, Jun Wu, Yu‐Kang Tu

et al.

Plant Biology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 3, 2025

Abstract Salt stress, intensified by climate change, is a significant threat to rice production, vital staple for over half the world's population. This makes addressing salt stress in cultivation pressing issue. study investigates role of PNSB as biostimulant enhancing salinity tolerance salt‐sensitive seedlings, existing gaps knowledge on physiological and biochemical impacts under saline stress. We inoculated seedlings with 80 mmol NaCl controlled environment. After 5‐day treatment, we conducted analyses. Salinity induced oxidative seedlings. However, application 5‐ALA‐producing mitigated elevated 5‐ALA shoots 23%, roots 190.5%, chlorophyll content 105.0%. treatment also reduced superoxide radicals (O 2 •− ) H O 26.7% 38.7%, respectively, related increased activity antioxidant enzymes, SOD (142.9%) APX (41.8%). led lower electrolyte leakage (25.2%) MDA (17.4%), indicating ROS. Additionally, proline soluble sugar decreased 29.2% 72.5%, respectively. sodium potassium ion both (31.2%) (27.4%) salt‐stressed These findings suggest that may facilitate nutrient solubilization balance, thereby mitigating adverse effects salinity, potential implications sustainable agricultural practices improve crop yield environments. Future research should focus elucidating specific pathways involved PNSB‐mediated exploring their across diverse species varying conditions.

Language: Английский

Citations

1
Differentiation and response mechanisms of the endophytic flora of plants ecologically restored in the ilmenite area DOI Creative Commons
Xin Yu, Junqiang Xu,

Zhonghua Zou

et al.

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 16

Published: March 7, 2025

Heavy metal contamination in soil is a serious environmental challenge, and abandoned mining areas are of particular concern. In order to rehabilitate the ecology these areas. this study, we used ICP-MS potentiometric method analyze physicochemical then endophytic bacteria remediation plants with help 16sRNA sequencing, investigate ecological ilmenite mine effect microbiology by seven common plants. The results revealed that abandonment significantly increased contents total phosphorus, potassium, available iron, lead surrounding soils. It also affected richness diversity bacterial communities. Pvi had highest richness, while Tsi lowest ( P < 0.05). A 28 phyla, 69 classes, 171 orders, 521 genera were identified. nine core OTUs found: Stenotrophomonas , Chryseobacterium Lactobacillus Clostridium_sensu_stricto_12 Prevotella Bradyrhizobium Nocardioides Delftia . Beta analysis community structure differed during process at site. Functional prediction upregulation Dco transporter protein function, DNA-binding transcriptional regulators, glyoxalase or related metal-dependent hydrolases, acyl coenzyme synthetases, ATPase components, amino acid synthesis, cellular respiration-related functions. Pearson correlation SOC, TK, AN, AK, Zn correlated α diversity. Redundancy (RDA) Actinobacteriota was positively SOD, TN, TK contents. For first time, study interactions among plants, pollutants, laying theoretical basis for screening specific plant restoration.

Language: Английский

Citations

0
Potassium-solubilizing endophytes: mechanisms and applications in enhancing sustainable agriculture and plant resilience DOI
Komal Pandey, Baljeet Singh Saharan

Symbiosis, Journal Year: 2025, Volume and Issue: unknown

Published: April 14, 2025

Language: Английский

Citations

0
Characterization of endophytic bacteria isolated from wild rice plants in the Mekong Delta, Vietnam DOI Open Access

Quach Văn Cao Thi,

NGUYEN LU KHOI MINH,

Nguyen Phuong Thuy

et al.

Biodiversitas Journal of Biological Diversity, Journal Year: 2024, Volume and Issue: 25(6)

Published: June 27, 2024

Abstract. Thi QVC, Minh NLK, Thuy NP, Tat TQ, Tran T. 2024. Characterization of endophytic bacteria isolated from wild rice plants in the Mekong Delta, Vietnam. Biodiversitas 25: 2576-2585. Endophytic bring many benefits to plants, such as stimulating plant growth and inhibiting microbial pathogens that cause diseases. Hence, this investigation aimed evaluate association with (Oryza rufipogon) can fix nitrogen, solubilize phosphorus produce indole-3-acetic acid (IAA). Twelve-five bacterial strains were recovered stems roots collected Vinh Long Tien Giang provinces Delta. Among these strains, six had solubilizing seven nitrogen-fixing activity. Strain BR3.5 fixed highest i.e. ammonia (NH4+) content 0.109 ± 0.002 mg/L after eight-day incubation. However, solubilization was recorded two isolates, RR3.7 RR1.1, clear zone diameters 0.800 0.020 mm 0.030 mm, respectively. In addition, could synthesize IAA, BR2.5 produced highest, i.e., 0.067 ?g/mL, IAA Notably, strain exhibited multiple activities like nitrogen fixation (0.109 mg/L), (1.02 mm), synthesis (0.056 0.00 ?g/mL). identified Pantoea sp. based on 16S rRNA gene sequencing (92.69% similarity) together morpho-physiological biochemical characteristics. The findings indicate may be used for production biofertilizers farming.

Language: Английский

Citations

1