High‐temperature resilience in Bacillus safensis primed wheat plants: A study of dynamic response associated with modulation of antioxidant machinery, differential expression of HSPs and osmolyte biosynthesis

Sarkar, Jayanwita; Chakraborty, Usha; Chakraborty, B. N.

doi:10.1016/j.envexpbot.2020.104315

Cited by 17 publications

(10 citation statements)

References 106 publications

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“…Here, 2691 DEGs were identified, including 1809 upregulated and 882 downregulated. Further analysis demonstrated that most of the DEGs induced by heat stress were related to the HSF–HSP pathway, ROS scavenging enzymes, plant hormone signaling transduction, and TFs, including bZIP, MYB, NAC, WRKY, and bHLH, which have been reported in previous studies [ 25 , 27 , 47 , 48 ]. This study is the first report to investigate the transcriptomic profiles of C. tangshen in response to heat stress.…”

Section: Discussionsupporting

confidence: 67%

“…To this end, the regulatory mechanisms involved in acquiring thermotolerance and long-term adaptation to heat stress have been elucidated [ 23 , 24 ]. At the molecular level, the heat stress response is mainly associated with the activation of HSF (heat shock transcription factor) and HSP (heat shock protein) networks that further regulate heat shock proteins (HSPs), including HSP20s, HSP70s, HSP90s, and HSP100s [ 25 ]. These heat-induced proteins provide various functions, including protecting proteins from heat stress-induced degradation and assisting in maintaining their native structures [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

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Transcriptomic Analysis Provides Novel Insights into the Heat Stress-Induced Response in Codonopsis tangshen

Jiang

Wassie

Zhou

et al. 2023

Life

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Codonopsis tangshen Oliv (C. tangshen) is a valuable traditional Chinese medicinal herb with tremendous health benefits. However, the growth and development of C. tangshen are seriously affected by high temperatures. Therefore, understanding the molecular responses of C. tangshen to high-temperature stress is imperative to improve its thermotolerance. Here, RNA-Seq analysis was performed to investigate the genome-wide transcriptional changes in C. tangshen in response to short-term heat stress. Heat stress significantly damages membrane stability and chlorophyll biosynthesis in C. tangshen, as evidenced by pronounced malonaldehyde (MDA), electrolyte leakage (EL), and reduced chlorophyll content. Transcriptome analysis showed that 2691 differentially expressed genes (DEGs) were identified, including 1809 upregulated and 882 downregulated. Functional annotations revealed that the DEGs were mainly related to heat shock proteins (HSPs), ROS-scavenging enzymes, calcium-dependent protein kinases (CDPK), HSP-HSP network, hormone signaling transduction pathway, and transcription factors such as bHLHs, bZIPs, MYBs, WRKYs, and NACs. These heat-responsive candidate genes and TFs could significantly regulate heat stress tolerance in C. tangshen. Overall, this study could provide new insights for understanding the underlying molecular mechanisms of thermotolerance in C. tangshen.

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Section: Discussionsupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Transcriptomic Analysis Provides Novel Insights into the Heat Stress-Induced Response in Codonopsis tangshen

Jiang

Wassie

Zhou

et al. 2023

Life

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“…These findings do not support the previous research by Sonbarse et al (2020), who reported that the application of PGPB can improve the tocopherols, as the main anti‐oxidative molecules. In this regard, the plant seems to activate certain mechanisms during the stress in response to the applied treatments, one of which is the production of polyphenols as non‐enzymatic antioxidants in the plants, which can provide more protection against potential oxidative damage and enhance the stability of cell membranes (Sarkar et al, 2021). Beneficial bacteria indirectly help restrain the function of oxidising enzymes by stimulating the accumulation of polyphenols, as polyphenols can form complexes with metals that catalyse oxygenation reactions (Notununu et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

Biofertilisation with a consortium of growth‐promoting bacterial strains improves the nutritional status of wheat grain under control, drought, and salinity stress conditions

Khanghahi

AbdElgawad

Verbruggen

et al. 2022

Physiologia Plantarum

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We investigated the effect of plant growth‐promoting bacterial strains (PGPB) as biofertilisers on the grain metabolic composition of durum wheat (Triticum durum Desf.). To this aim, we conducted a greenhouse experiment where we grew durum wheat plants supplied with a biofertiliser consortium of four PGPB and/or chemical fertiliser (containing nitrogen, phosphorus, potassium, and zinc), under non‐stress, drought (at 40% field capacity), or salinity (150 mM NaCl) conditions. Nutrient accumulations in the grain were increased in plants treated with the biofertiliser consortium, alone or with a half dose of chemical fertilisers, compared to those in no fertilisation treatment. A clear benefit of biofertiliser application in the improvement of protein, soluble sugar, starch, and lipid contents in the grains was observed in comparison with untreated controls, especially under stress conditions. The most striking observation was the absence of significant differences between biofertiliser and chemical fertiliser treatments for most parameters. Moreover, the overall response to the biofertiliser consortium was accompanied by greater changes in amino acids, organic acids, and fatty acid profiles. In conclusion, PGPB improved the metabolic and nutrient status of durum wheat grains to a similar extent as chemical fertilisers, particularly under stress conditions, demonstrating the value of PGPB as a sustainable fertilisation treatment.

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“…Similarly, modulation in expression of heat shock proteins (HSPs) was noticed in wheat seeds primed with Bacillus safensis. The treated plants tolerated heat shock (40°C) without generation of excessive ROS ( Sarkar et al., 2021 ). Introduction of HVA1 (ABA-responsive barley gene) in wheat improved water use efficiency subjected to drought stress in wheat ( Sivamani et al., 2000 ).…”

Section: Developing Stress Resilient Cropsmentioning

confidence: 99%

Physiological and molecular insight of microbial biostimulants for sustainable agriculture

Kaushal

Ali

Saini³

et al. 2023

Front. Plant Sci.

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Increased food production to cater the need of growing population is one of the major global challenges. Currently, agro-productivity is under threat due to shrinking arable land, increased anthropogenic activities and changes in the climate leading to frequent flash floods, prolonged droughts and sudden fluctuation of temperature. Further, warm climatic conditions increase disease and pest incidences, ultimately reducing crop yield. Hence, collaborated global efforts are required to adopt environmentally safe and sustainable agro practices to boost crop growth and productivity. Biostimulants appear as a promising means to improve growth of plants even under stressful conditions. Among various categories of biostimulants, microbial biostimulants are composed of microorganisms such as plant growth-promoting rhizobacteria (PGPR) and/or microbes which stimulate nutrient uptake, produce secondary metabolites, siderophores, hormones and organic acids, participate in nitrogen fixation, imparts stress tolerance, enhance crop quality and yield when applied to the plants. Though numerous studies convincingly elucidate the positive effects of PGPR-based biostimulants on plants, yet information is meagre regarding the mechanism of action and the key signaling pathways (plant hormone modulations, expression of pathogenesis-related proteins, antioxidants, osmolytes etc.) triggered by these biostimulants in plants. Hence, the present review focuses on the molecular pathways activated by PGPR based biostimulants in plants facing abiotic and biotic challenges. The review also analyses the common mechanisms modulated by these biostimulants in plants to combat abiotic and biotic stresses. Further, the review highlights the traits that have been modified through transgenic approach leading to physiological responses akin to the application of PGPR in the target plants.

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High‐temperature resilience in Bacillus safensis primed wheat plants: A study of dynamic response associated with modulation of antioxidant machinery, differential expression of HSPs and osmolyte biosynthesis

Cited by 17 publications

References 106 publications

Transcriptomic Analysis Provides Novel Insights into the Heat Stress-Induced Response in Codonopsis tangshen

Transcriptomic Analysis Provides Novel Insights into the Heat Stress-Induced Response in Codonopsis tangshen

Biofertilisation with a consortium of growth‐promoting bacterial strains improves the nutritional status of wheat grain under control, drought, and salinity stress conditions

Physiological and molecular insight of microbial biostimulants for sustainable agriculture

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