Tolerance responses in wheat landrace Bolani are related to enhanced metabolic adjustments under drought stress

Naderi, Salehe; Fakheri, Barat Ali; Maali-Amiri, Reza; Mahdinezhad, Nafiseh

doi:10.1016/j.plaphy.2020.03.002

Cited by 43 publications

(25 citation statements)

References 54 publications

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“…When plants are subjected to drought stress, ROS accumulation occurs, leading to the peroxidation of cellular membrane lipids. MDA, the end product of membrane lipid peroxidation, also increases in content (Naderi et al, 2020). In this study, an increase in MDA content was observed in all drought stress treatments.…”

Section: Discussionsupporting

confidence: 63%

Effects of growth‐stage‐based deficit irrigation management on physiological and biochemical characteristics and yield of winter wheat in Northwest China^*

Cao

Cai

Zhao

2021

Irrigation and Drainage

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Growth-stage-based deficit irrigation is an appropriate method when irrigation water is scarce. However, the effects of continuous deficit irrigation during the winter wheat growth period on crop physiological and biochemical processes need to be further evaluated. Five growth-stage-based deficit irrigation strategies were established and tested in winter wheat in the present study. The results showed that water stress resulted in a decrease in net photosynthetic rate (Pn) and transpiration rate, but led to an increase in catalase and peroxidase activities and an increase in malondialdehyde and proline contents. A high Pn could be sustained when the relative water content of the soil was maintained within the range of 60%-75%. Pn was negatively correlated with antioxidant enzyme activity. Based on the averaged data from 2017 to 2019, all water stress treatment groups showed varying degrees of yield reduction compared to the control (CK). Though the T1 treatment (i.e., irrigation from jointing stage to filling stage with 240 mm of water) had the highest water productivity (2.19 kg m À3 ), its grain yield was only 7.01% lower than the CK treatment. The present results suggest that the T1 treatment is the better irrigation model for saving water and achieving high grain yield in winter wheat in this region.

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Section: Discussionsupporting

confidence: 63%

Effects of growth‐stage‐based deficit irrigation management on physiological and biochemical characteristics and yield of winter wheat in Northwest China^*

Cao

Cai

Zhao

2021

Irrigation and Drainage

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“…Plant hormones and metabolites play an important role in stress response and tolerance in plants. Metabolic pathways could coordinately alleviate oxidative stress (Naderi et al, 2020), and hormone accumulation affects plant response to drought (Xu et al, 2017). In this study many DEGs associated with hormone and metabolic pathways (Supplementary Table 3).…”

Section: Discussionmentioning

confidence: 80%

A R2R3-MYB Transcription Factor Gene, BpMYB123, Regulates BpLEA14 to Improve Drought Tolerance in Betula platyphylla

Wei

2021

Front. Plant Sci.

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Drought stress causes various negative impacts on plant growth and crop production. R2R3-MYB transcription factors (TFs) play crucial roles in the response to abiotic stress. However, their functions in Betula platyphylla haven’t been fully investigated. In this study, a R2R3 MYB transcription factor gene, BpMYB123, was identified from Betula platyphylla and reveals its significant role in drought stress. Overexpression of BpMYB123 enhances tolerance to drought stress in contrast to repression of BpMYB123 by RNA interference (RNAi) in transgenic experiment. The overexpression lines increased peroxidase (POD) and superoxide dismatase (SOD) activities, while decreased hydrogen peroxide (H2O2), superoxide radicals (O2–), electrolyte leakage (EL) and malondialdehyde (MDA) contents. Our study showed that overexpression of BpMYB123 increased BpLEA14 gene expression up to 20-fold due to BpMYB123 directly binding to the MYB1AT element of BpLEA14 promoter. These results indicate that BpMYB123 acts as a regulator via regulating BpLEA14 to improve drought tolerance in birch.

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“…This result was supported by another report on C. pilosula , where the content of lobetyolin in C. pilosula parts under drought treatment was also remarkably increased compared with those in control parts [ 9 ]. These highly accumulated pharmacological components in C. pilosula could provide protections against damages of drought stress [ 33 – 35 ]. For example, Syringin, atractylolide, α–tocopherol, flavonol, and anthocyanin as non–enzymatic antioxidants could scavenge ROS to protect cell proteins, enzymes, organelles, cell membranes and maintain normal plant growth [ 36 , 37 ]; Organic acids could regulate the osmotic pressure of plant cell, thus prevented excessive water loss, held cell turgor, and kept the physiological processes of plants [ 38 , 39 ].…”

Section: Discussionmentioning

confidence: 99%

Contents of lobetyolin, syringin, and atractylolide III in Codonopsis pilosula are related to dynamic changes of endophytes under drought stress

et al. 2021

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Background Codonopsis pilosula, an important medicinal plant, can accumulate certain metabolites under moderate drought stress. Endophytes are involved in the metabolite accumulations within medicinal plants. It is still unknown that the endophytes of C. pilosula are associated with the accumulations of metabolites. This study aims to investigate the promoting effect of endophytes on the accumulations of active substances in C. pilosula under drought stress. Methods High–performance liquid chromatography and high–throughput sequencing technology were performed to investigate changes in the contents of secondary metabolite and endophyte abundances of C. pilosula under drought stress, respectively. Spearman’s correlation analysis was further conducted to identify the endophytic biomarkers related to accumulations of pharmacodynamic compounds. Culture-dependent experiments were performed to confirm the functions of endophytes in metabolite accumulations. Results The distribution of pharmacological components and diversity and composition of endophytes showed tissue specificity within C. pilosula. The contents of lobetyolin, syringin, and atractylolide III in C. pilosula under drought stress were increased by 8.47%‒86.47%, 28.78%‒230.98%, and 32.17%‒177.86%, respectively, in comparison with those in untreated groups. The Chao 1 and Shannon indices in different parts of drought–stressed C. pilosula increased compared with those in untreated parts. The composition of endophytic communities in drought treatment parts of C. pilosula was different from that in control parts. A total of 226 microbial taxa were identified as potential biomarkers, of which the abundances of 42 taxa were significantly and positively correlated to the pharmacodynamic contents. Culture-dependent experiments confirmed that the contents of lobetyolin and atractylolide III were increased by the application of Epicoccum thailandicum, Filobasidium magnum, and Paraphoma rhaphiolepidis at the rates of 11.12%‒46.02%, and that the content of syringin was increased by Pseudomonas nitroreducens at the rates of 118.61%‒119.36%. Conclusions Certain endophytes participated in the accumulations of bioactive metabolites, which provided a scientific evidence for the development and application of microorganisms to improve the quality of traditional Chinese medicine.

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Tolerance responses in wheat landrace Bolani are related to enhanced metabolic adjustments under drought stress

Cited by 43 publications

References 54 publications

Effects of growth‐stage‐based deficit irrigation management on physiological and biochemical characteristics and yield of winter wheat in Northwest China^*

Effects of growth‐stage‐based deficit irrigation management on physiological and biochemical characteristics and yield of winter wheat in Northwest China^*

A R2R3-MYB Transcription Factor Gene, BpMYB123, Regulates BpLEA14 to Improve Drought Tolerance in Betula platyphylla

Contents of lobetyolin, syringin, and atractylolide III in Codonopsis pilosula are related to dynamic changes of endophytes under drought stress

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Tolerance responses in wheat landrace Bolani are related to enhanced metabolic adjustments under drought stress

Cited by 43 publications

References 54 publications

Effects of growth‐stage‐based deficit irrigation management on physiological and biochemical characteristics and yield of winter wheat in Northwest China*

Effects of growth‐stage‐based deficit irrigation management on physiological and biochemical characteristics and yield of winter wheat in Northwest China*

A R2R3-MYB Transcription Factor Gene, BpMYB123, Regulates BpLEA14 to Improve Drought Tolerance in Betula platyphylla

Contents of lobetyolin, syringin, and atractylolide III in Codonopsis pilosula are related to dynamic changes of endophytes under drought stress

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Effects of growth‐stage‐based deficit irrigation management on physiological and biochemical characteristics and yield of winter wheat in Northwest China^*

Effects of growth‐stage‐based deficit irrigation management on physiological and biochemical characteristics and yield of winter wheat in Northwest China^*