A newly isolated Bacillus pumilus strain SH-9 modulates response to drought stress in soybean via endogenous phytohormones and gene expression (Daegu, South Korea)

Shaffique, Shifa; Imran, Muhammad; adhikari, Arjun; Aaqil khan, Muhammad; Rahim, Waqas; Alomrani, Sarah Owdah; Yun, Byung- Wook; kang, Sang-Mo; Lee, In-Jung

doi:10.1016/j.stress.2023.100279

Cited by 12 publications

(6 citation statements)

References 72 publications

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“…8. Previous studies have also shown that PGPRs can reduce oxidative stress [49,50]. Our findings support the idea that beneficial microbes have the potential to modulate oxidative stress.…”

Section: Measurements Of Antioxidative Stresssupporting

confidence: 90%

“…The results showed that applying KNPO3 decreased ABA levels by 12% in lettuce and 17% in Chinese cabbage. Recent studies have also suggested that this beneficial microbe can improve stress tolerance in plants by regulating hormonal profiles in various species, including maize [32], wheat [38], and rice [49]. Our results confirm that KNPO3 has the potential to regulate ABA levels.…”

Section: Measurements Of Antioxidative Stresssupporting

confidence: 85%

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Inoculation with Bacillus tеquilеnsis (KNPO3) improves thе growth of Cabbagе and Lеttucе undеr NaCl strеss by еnhancing phytohormonеs and antioxidant еnzymatic activity

Woo,

Injamum-Ul-Hoque,

Kang

et al. 2024

JABC

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Salinity significantly lowеrs agricultural productivity. To maximizе agricultural productivity, it is nеcеssary to dеvеlop agricultural practices that еnablе plants to survivе in unfavourablе conditions. Rhizobactеria that promotе plant growth havе thе ability to augmеnt plant growth еithеr dirеctly or indirеctly in rеsponsе to abiotic advеrsе conditions. Bacillus tеquilеnsis KNPO3, a growth-promoting bactеrium scrееnеd from food wastе, was еmployеd as a microbial inoculum in a pot еxpеrimеnt to еxaminе thе morphology and biochеmical charactеristics of Chinеsе cabbagе and lеttucе plants undеr 100 mM NaCl strеss. The findings of thе study rеvеalеd that Bacillus tеquilеnsis KNPO3 improvеd thе chlorophyll contеnt. Aftеr thе application of KNPO3, thе oxidativе strеss is rеducеd comparеd to thе nеgativе control. Thе lеvеls of supеroxidе dismutasе (SOD) dеcrеasеd by 3.7%, catalasе (CAT) by 8%, and glutathionе pеroxidasе (GPx) by 32% in lеttucе. Similarly, SOD, CAT, and GPx levels in Chinese cabbage were reduced by 3.3, 1.9, and 45%, respectively. Additionally, plant growth-promoting rhizobacteria inoculatеd plants also showеd a reduction in abscisic acid (ABA) lеvеls by 24% in Chinеsе cabbagе and 7% in lеttucе undеr salt strеss. Inoculation with KNPO3 suggests that KNPO3 could be a plant growth prompting rhizobactеria that help plants to grow under salinity conditions.

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“…8. Previous studies have also shown that PGPRs can reduce oxidative stress [49,50]. Our findings support the idea that beneficial microbes have the potential to modulate oxidative stress.…”

Section: Measurements Of Antioxidative Stresssupporting

confidence: 90%

Section: Measurements Of Antioxidative Stresssupporting

confidence: 85%

Inoculation with Bacillus tеquilеnsis (KNPO3) improves thе growth of Cabbagе and Lеttucе undеr NaCl strеss by еnhancing phytohormonеs and antioxidant еnzymatic activity

Woo,

Injamum-Ul-Hoque,

Kang

et al. 2024

JABC

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“…POD and SOD serve as vital antioxidants, playing a pivotal role in safeguarding plants against various stressors [ 71 ]. They are effective in mitigating the accumulation of ROS in plants when subjected to stress [ 72 ].…”

Section: Discussionmentioning

confidence: 99%

Functional Characterization of the Soybean Glycine max Actin Depolymerization Factor GmADF13 for Plant Resistance to Drought Stress

Wang,

Du,

Lyu

et al. 2024

Plants

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Abiotic stress significantly affects plant growth and has devastating effects on crop production. Drought stress is one of the main abiotic stressors. Actin is a major component of the cytoskeleton, and actin-depolymerizing factors (ADFs) are conserved actin-binding proteins in eukaryotes that play critical roles in plant responses to various stresses. In this study, we found that GmADF13, an ADF gene from the soybean Glycine max, showed drastic upregulation under drought stress. Subcellular localization experiments in tobacco epidermal cells and tobacco protoplasts showed that GmADF13 was localized in the nucleus and cytoplasm. We characterized its biological function in transgenic Arabidopsis and hairy root composite soybean plants. Arabidopsis plants transformed with GmADF13 displayed a more robust drought tolerance than wild-type plants, including having a higher seed germination rate, longer roots, and healthy leaves under drought conditions. Similarly, GmADF13-overexpressing (OE) soybean plants generated via the Agrobacterium rhizogenes-mediated transformation of the hairy roots showed an improved drought tolerance. Leaves from OE plants showed higher relative water, chlorophyll, and proline contents, had a higher antioxidant enzyme activity, and had decreased malondialdehyde, hydrogen peroxide, and superoxide anion levels compared to those of control plants. Furthermore, under drought stress, GmADF13 OE activated the transcription of several drought-stress-related genes, such as GmbZIP1, GmDREB1A, GmDREB2, GmWRKY13, and GmANK114. Thus, GmADF13 is a positive regulator of the drought stress response, and it may play an essential role in plant growth under drought stress conditions. These results provide new insights into the functional elucidation of soybean ADFs. They may be helpful for breeding new soybean cultivars with a strong drought tolerance and further understanding how ADFs help plants adapt to abiotic stress.

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“…Moreover, Bacillus paralicheniformis strain FMCH001 demonstrated the potential to enhance water use efficiency, nutrient uptake, root growth, photosynthesis rate, C:N ratio, and overall plant-water relations in soybean, making it a promising candidate for sustaining plant growth in water-limited conditions [36]. Additionally, Bacillus pumilus strain SH-9, identified as a drought-tolerant variant, positively influenced soybean growth under drought stress by modulating the expression of phytohormone genes and antioxidant profiles [37]. Furthermore, Bacillus subtilis emerged as a beneficial bacterium promoting the growth of common beans and maize while increasing water use efficiency.…”

Section: Alpha and Beta Diversitiesmentioning

confidence: 99%

Co-occurrence Networks and Topological Analyses Revealed Microbiome Structures in Soybean Roots from a Louisiana Soybean Field Severely Damaged by Prolonged High Temperatures and Drought Stress

Gouli,

Majeed,

Liu

et al. 2024

Preprint

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Drought stress has a significant impact on agricultural productivity, affecting key crops such as soybeans, the second most widely cultivated crop in the United States. We conducted endophytic and rhizospheric microbial diversity analyses in soybean plants cultivated during the 2023 growing season, amid extreme weather conditions of prolonged high temperatures and drought in Louisiana. Specifically, we collected surviving and non-surviving soybean plants from two plots of a Louisiana soybean field severely damaged from the extreme heat and drought condition in 2023. We did not observe any significant difference in the microbial diversity of rhizosphere between surviving and non-surviving plants. However, we found obvious differences in the structure of endophytic microbial community in root tissues between the two plant conditions. Especially, the bacterial genera of Proteobacteria, Pseudomonas and Pantoea, were predominant in the surviving root tissues, while the bacterial genus Streptomyces was conspicuously dominant in the non-surviving (dead) root tissues. Co-occurrence patterns and network centrality analyses enabled us to discern the intricate characteristics of operational taxonomic units (OTUs) within endophytic and rhizospheric networks. Overall, this study advances our understanding of the intricate relationship between bacteria and plants under drought stress, paving the way for future research to investigate the importance of microbial diversity in drought affected regions such as Louisiana.

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A newly isolated Bacillus pumilus strain SH-9 modulates response to drought stress in soybean via endogenous phytohormones and gene expression (Daegu, South Korea)

Cited by 12 publications

References 72 publications

Inoculation with Bacillus tеquilеnsis (KNPO3) improves thе growth of Cabbagе and Lеttucе undеr NaCl strеss by еnhancing phytohormonеs and antioxidant еnzymatic activity

Inoculation with Bacillus tеquilеnsis (KNPO3) improves thе growth of Cabbagе and Lеttucе undеr NaCl strеss by еnhancing phytohormonеs and antioxidant еnzymatic activity

Functional Characterization of the Soybean Glycine max Actin Depolymerization Factor GmADF13 for Plant Resistance to Drought Stress

Co-occurrence Networks and Topological Analyses Revealed Microbiome Structures in Soybean Roots from a Louisiana Soybean Field Severely Damaged by Prolonged High Temperatures and Drought Stress

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