Trehalose Protects Maize Plants from Salt Stress and Phosphorus Deficiency

Rohman, Md. Motiar; Islam, Md. Robyul; Monsur, Mahmuda Binte; Amiruzzaman, M.; Fujita, Masayuki; Hasanuzzaman, Mirza

doi:10.3390/plants8120568

Cited by 63 publications

(36 citation statements)

References 68 publications

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“…These decreases were correlated with significant increases in total phenolic contents as compared with untreated plants. A similar positive impact of trehalose was recorded in maize plants exposed to salt stress by increasing the growth parameters and photosynthetic activity of the plant (Rohman et al, 2019).…”

Section: Physiological Responsesupporting

confidence: 70%

Bioformulation of Silk-Based Coating to Preserve and Deliver Rhizobium tropici to Phaseolus vulgaris Under Saline Environments

et al. 2021

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Seed priming has been for a long time an efficient application method of biofertilizers and biocontrol agents. Due to the quick degradation of the priming agents, this technique has been limited to specific immediate uses. With the increase of awareness of the importance of sustainable use of biofertilizers, seed coating has presented a competitive advantage regarding its ability to adhere easily to the seed, preserve the inoculant, and decompose in the soil. This study compared primed Phaseolus vulgaris seeds with Rhizobium tropici and trehalose with coated seeds using a silk solution mixed with R. tropici and trehalose. We represented the effect of priming and seed coating on seed germination and the development of seedlings by evaluating physiological and morphological parameters under different salinity levels (0, 20, 50, and 75 mM). Results showed that germination and morphological parameters have been significantly enhanced by applying R. tropici and trehalose. Seedlings of coated seeds show higher root density than the freshly primed seeds and the control. The physiological response has been evaluated through the stomatal conductance, the chlorophyll content, and the total phenolic compounds. The stability of these physiological traits indicated the role of trehalose in the protection of the photosystems of the plant under low and medium salinity levels. R. tropici and trehalose helped the plant mitigate the negative impact of salt stress on all traits. These findings represent an essential contribution to our understanding of stress responses in coated and primed seeds. This knowledge is essential to the design of coating materials optimized for stressed environments. However, further progress in this area of research must anticipate the development of coatings adapted to different stresses using micro and macro elements, bacteria, and fungi with a significant focus on biopolymers for sustainable agriculture and soil microbiome preservation.

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Section: Physiological Responsesupporting

confidence: 70%

Bioformulation of Silk-Based Coating to Preserve and Deliver Rhizobium tropici to Phaseolus vulgaris Under Saline Environments

et al. 2021

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“…MDA is the final product of membrane lipid peroxidation, and its content can reflect the extent to which plants suffer from adversity damage ( Wen et al, 2012 ). Previous studies found that the MDA content increased significantly under temperature stress and phosphorus stress ( Rohman et al, 2019 ; Xia et al, 2021a ). This experiment found that the MDA content significantly increased under low-phosphorus stress and root zone high temperature, and the root zone high temperature treatment is more obvious, indicating that the membrane lipid peroxidation is obvious.…”

Section: Discussionmentioning

confidence: 92%

Effects of Root Zone Warming on Maize Seedling Growth and Photosynthetic Characteristics Under Different Phosphorus Levels

et al. 2021

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Phosphorus content and root zone temperature are two major environmental factors affecting maize growth. Both low phosphorus and root zone high temperature stress significantly affect the growth of maize, but the comprehensive effects of phosphorus deficiency and root zone warming are less studied. This study aimed to explore the effects of phosphorus deficiency and root zone warming on the root absorption capacity, total phosphorus content, and photosynthetic fluorescence parameters of maize seedlings. The results showed that maize shoots and roots had different responses to root zone warming and phosphorus deficiency. Properly increasing the root zone temperature was beneficial to the growth of maize seedlings, but when the root zone temperature was too high, it significantly affected the root and shoot development of maize seedlings. The root zone warming had a more significant impact on the root system, while phosphorus deficiency had a greater impact on the shoots. Phosphorus content and root zone warming had a strong interaction. Under the comprehensive influence of normal phosphorus supply and medium temperature in the root zone, the growth of maize seedlings was the best. Under the combined effects of low phosphorus and high temperature in the root zone, the growth was the worst. Compared with the combination of normal phosphorus and root zone medium temperature treatment, the dry mass of the low-phosphorus root zone high temperature treatment was decreased by 55.80%. Under the condition of low-phosphorus too high root zone temperature reduced root vitality, plant phosphorus content, which in turn affected plant growth and light energy utilization efficiency. In the case of sufficient phosphate fertilizer supply, appropriately increasing the soil temperature in the root zone is beneficial to increase the absorption and utilization of phosphorus by plants and promote the growth and development of maize seedlings.

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“…In fact, MG itself may serve as a stress signal in various organisms. In plants, for example, intracellular MG increases in response to drought (126,127), salinity (126,(128)(129)(130)(131), cold stress (126), heavy metals (128), or phosphorous deficiency (131), and overexpression of certain genes involved in MG detoxification has been shown to enhance salt tolerance in tobacco (126) and in Brassica juncea (132). Investigating whether MG detoxification is linked to abiotic stressors such as salt, temperature, or desiccation in Candida species would be an interesting avenue of future research, particularly in C. auris due to its persistence on hospital surfaces and high salt tolerance.…”

Section: Discussionmentioning

confidence: 99%

Transcriptional response of Candida auris to the Mrr1 inducers methylglyoxal and benomyl

Biermann

Hogan

2022

Preprint

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Candida auris is an urgent threat to human health due to its rapid spread in healthcare settings and its repeated development of multidrug resistance. Diseases that put individuals at a higher risk for C. auris infection, such as diabetes, kidney failure, or immunocompromising conditions, are associated with elevated levels of methylglyoxal (MG), a reactive dicarbonyl compound derived from several metabolic processes. In other Candida species, expression of MG reductase enzymes that catabolize and detoxify MG are controlled by Mrr1, a multidrug resistance-associated transcription factor, and MG induces Mrr1 activity. Here, we used transcriptomics and genetic assays to determine that C. auris MRR1a contributes to MG resistance, and that the main Mrr1a targets are an MG reductase and MDR1, which encodes an drug efflux protein. The C. auris Mrr1a regulon is smaller than Mrr1 regulons described in other species. In addition to MG, benomyl (BEN), a known Mrr1 stimulus, induces C. auris Mrr1 activity, and characterization of the MRR1a-dependent and independent transcriptional responses revealed substantial overlap in genes that were differentially expressed in response to each compound. Additionally, we found that an MRR1 allele specific to one C. auris phylogenetic clade, clade III, encodes a hyperactive Mrr1 variant, and this activity correlated with higher MG resistance. C. auris MRR1a alleles were functional in Candida lusitaniae and were inducible by BEN, but not by MG, suggesting that the two Mrr1 inducers act via different mechanisms. Together, the data presented in this work contribute to the understanding Mrr1 activity and MG resistance in C. auris.ImportanceCandida auris is a fungal pathogen that has spread since its identification in 2009 and is of concern due to its high incidence of resistance against multiple classes of antifungal drugs. In other Candida species, the transcription factor Mrr1 plays a major role in resistance against azole antifungals and other toxins. More recently, Mrr1 has been recognized to contribute to resistance to methylglyoxal (MG), a toxic metabolic byproduct. Here, we show that C. auris MRR1a, the closest ortholog to MRR1 in other species, contributes to resistance to MG, and that Mrr1a strongly co-regulates expression of MGD1, encoding a methylglyoxal reductase enzyme and MDR1, encoding an efflux protein involved in resistance to azole drugs, antimicrobial peptides and bacterial products. We found that one major clade of C. auris has a constitutively active Mrr1 despite high azole resistance due to other mutations, and that this high Mrr1a activity correlates with higher MG resistance. Finally, we gain insights into the activities of MG and another Mrr1 inducer, benomyl, to better understand C. auris regulation of phenotypes relevant in vivo.

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Trehalose Protects Maize Plants from Salt Stress and Phosphorus Deficiency

Cited by 63 publications

References 68 publications

Bioformulation of Silk-Based Coating to Preserve and Deliver Rhizobium tropici to Phaseolus vulgaris Under Saline Environments

Bioformulation of Silk-Based Coating to Preserve and Deliver Rhizobium tropici to Phaseolus vulgaris Under Saline Environments

Effects of Root Zone Warming on Maize Seedling Growth and Photosynthetic Characteristics Under Different Phosphorus Levels

Transcriptional response of Candida auris to the Mrr1 inducers methylglyoxal and benomyl

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