<i>Halomonas ventosae</i> <scp>JPT10</scp> promotes salt tolerance in foxtail millet (<i>Setaria italica</i>) by affecting the levels of multiple antioxidants and phytohormones

Xiao, Shenghui; Wan, Yiman; Zheng, Yue; Wang, Yongdong; Fan, Jiayin; Xu, Qian; Gao, Zheng; Wu, Changai

doi:10.1002/pei3.10122

Cited by 2 publications

(1 citation statement)

References 89 publications

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“…In separate studies, several other Halomonas strains have been shown to enhance salt tolerance in purple basil [111], maize [112], chickpea [131], and sunflower [114]. One Halomonas strain, H. ventosae JPT10, was tested with multiple plants and enhanced salt tolerance in foxtail millet, soybean, tomato, wheat, and maize [115], indicating that some strains may serve as PGPB for multiple crop species. In earlier work, our research group isolated many halophilic bacteria from halophytes near Utah Lake in Utah, including Halomonas and Kushneria strains, some of which were found to have ST-PGPB activity [102].…”

Section: Salt-tolerant Bacterial Genus Halomonasmentioning

confidence: 99%

Halophilic Plant-Associated Bacteria with Plant-Growth-Promoting Potential

Meinzer,

Ahmad,

Nielsen

2023

Microorganisms

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The salinization of soils is a growing agricultural concern worldwide. Irrigation practices, drought, and climate change are leading to elevated salinity levels in many regions, resulting in reduced crop yields. However, there is potential for a solution in the microbiome of halophytes, which are naturally salt-tolerant plants. These plants harbor a salt-tolerant microbiome in their rhizosphere (around roots) and endosphere (within plant tissue). These bacteria may play a significant role in conferring salt tolerance to the host plants. This leads to the possibility of transferring these beneficial bacteria, known as salt-tolerant plant-growth-promoting bacteria (ST-PGPB), to salt-sensitive plants, enabling them to grow in salt-affected areas to improve crop productivity. In this review, the background of salt-tolerant microbiomes is discussed and their potential use as ST-PGPB inocula is explored. We focus on two Gram-negative bacterial genera, Halomonas and Kushneria, which are commonly found in highly saline environments. These genera have been found to be associated with some halophytes, suggesting their potential for facilitating ST-PGPB activity. The study of salt-tolerant microbiomes and their use as PGPB holds promise for addressing the challenges posed by soil salinity in the context of efforts to improve crop growth in salt-affected areas.

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Section: Salt-tolerant Bacterial Genus Halomonasmentioning

confidence: 99%

Halophilic Plant-Associated Bacteria with Plant-Growth-Promoting Potential

Meinzer,

Ahmad,

Nielsen

2023

Microorganisms

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Halotolerant Bacillus sp. strain RA coordinates myo‐inositol metabolism to confer salt tolerance to tomato

Wu,

Chen,

et al. 2024

JIPB

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Soil salinity is a worldwide problem threatening crop yields. Some plant growth‐promoting rhizobacteria (PGPR) could survive in high salt environment and assist plant adaptation to stress. Nevertheless, the genomic and metabolic features, as well as the regulatory mechanisms promoting salt tolerance in plants by these bacteria remain largely unknown. In the current work, a novel halotolerant PGPR strain, namely, Bacillus sp. strain RA can enhance tomato tolerance to salt stress. Comparative genomic analysis of strain RA with its closely related species indicated a high level of evolutionary plasticity exhibited by strain‐specific genes and evolutionary constraints driven by purifying selection, which facilitated its genomic adaptation to salt‐affected soils. The transcriptome further showed that strain RA could tolerate salt stress by balancing energy metabolism via the reprogramming of biosynthetic pathways. Plants exude a plethora of metabolites that can strongly influence plant fitness. The accumulation of myo‐inositol in leaves under salt stress was observed, leading to the promotion of plant growth triggered by Bacillus sp. strain RA. Importantly, myo‐inositol serves as a selective force in the assembly of the phyllosphere microbiome and the recruitment of plant‐beneficial species. It promotes destabilizing properties in phyllosphere bacterial co‐occurrence networks, but not in fungal networks. Furthermore, interdomain interactions between bacteria and fungi were strengthened by myo‐inositol in response to salt stress. This work highlights the genetic adaptation of RA to salt‐affected soils and its ability to impact phyllosphere microorganisms through the adjustment of myo‐inositol metabolites, thereby imparting enduring resistance against salt stress in tomato.

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Halomonas ventosae JPT10 promotes salt tolerance in foxtail millet (Setaria italica) by affecting the levels of multiple antioxidants and phytohormones

Cited by 2 publications

References 89 publications

Halophilic Plant-Associated Bacteria with Plant-Growth-Promoting Potential

Halophilic Plant-Associated Bacteria with Plant-Growth-Promoting Potential

Halotolerant Bacillus sp. strain RA coordinates myo‐inositol metabolism to confer salt tolerance to tomato

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