Red and blue light function antagonistically to regulate cadmium tolerance by modulating the photosynthesis,antioxidant defense system and Cd uptake in cucumber(Cucumis sativus L.)

Guo, Zhixin; Lv, Jingli; Zhang, Huimei; Hu, Chunyan; Qin, Yanping; Dong, Han; Zhang, Tao; Dong, Xiaoxing; Du, Nanshan; Piao, Fengzhi

doi:10.1016/j.jhazmat.2022.128412

Cited by 34 publications

(23 citation statements)

References 37 publications

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“…The involvement of FRL in the activation of AsA-GSH cycle enzymes during the cold acclimation process was shown in wheat, too [ 92 ]. Interestingly, RL increased sensitivity to Cd stress, while BL triggered the opposite effect through increasing the expression and activity of APX, CAT, SOD, and GR, as well as GSH content in cucumbers ( Cucumis sativus L.) [ 93 ]. These results were obtained in various organs and tissues (mainly in leaves), but subcellular changes in ROS and antioxidants, which will be discussed in the next section, may be even more important in the light-dependent and redox-mediated adjustment of metabolism to the actual environmental conditions during various developmental stages of plants.…”

Section: The Effect Of Light Intensity and Spectrum On Ros And Antiox...mentioning

confidence: 99%

Light Intensity- and Spectrum-Dependent Redox Regulation of Plant Metabolism

et al. 2022

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Both light intensity and spectrum (280–800 nm) affect photosynthesis and, consequently, the formation of reactive oxygen species (ROS) during photosynthetic electron transport. ROS, together with antioxidants, determine the redox environment in tissues and cells, which in turn has a major role in the adjustment of metabolism to changes in environmental conditions. This process is very important since there are great spatial (latitude, altitude) and temporal (daily, seasonal) changes in light conditions which are accompanied by fluctuations in temperature, water supply, and biotic stresses. The blue and red spectral regimens are decisive in the regulation of metabolism because of the absorption maximums of chlorophylls and the sensitivity of photoreceptors. Based on recent publications, photoreceptor-controlled transcription factors such as ELONGATED HYPOCOTYL5 (HY5) and changes in the cellular redox environment may have a major role in the coordinated fine-tuning of metabolic processes during changes in light conditions. This review gives an overview of the current knowledge of the light-associated redox control of basic metabolic pathways (carbon, nitrogen, amino acid, sulphur, lipid, and nucleic acid metabolism), secondary metabolism (terpenoids, flavonoids, and alkaloids), and related molecular mechanisms. Light condition-related reprogramming of metabolism is the basis for proper growth and development of plants; therefore, its better understanding can contribute to more efficient crop production in the future.

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Section: The Effect Of Light Intensity and Spectrum On Ros And Antiox...mentioning

confidence: 99%

Light Intensity- and Spectrum-Dependent Redox Regulation of Plant Metabolism

et al. 2022

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“…Cadmium (Cd) is an ubiquitous heavy metal contaminant, which poses serious threats to the biosphere due to its long biological half-life, non-biodegradability, water solubility, and high mobility ( Sarwar et al, 2010 ; Cirmi et al, 2021 ; Kumar et al, 2021 ). Cd restrains the normal functioning of plants by perturbing the physiological function of plasma membrane, reducing the bioactivity of enzymes, and causing the burst of intracellular reactive oxygen species (ROS) ( Janicka-Russak et al, 2008 ; Singh et al, 2018 ; Guo et al, 2022 ). To better adapt to the Cd-contaminated circumstances, plants struggling with Cd have evolved sophisticated regulatory networks to mitigate Cd-induced deleterious effects.…”

Section: Introductionmentioning

confidence: 99%

Genome-wide identification of myeloblastosis gene family and its response to cadmium stress in Ipomoea aquatica

et al. 2022

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The myeloblastosis (MYB) proteins perform key functions in mediating cadmium (Cd) tolerance of plants. Ipomoea aquatica has strong adaptability to Cd Stress, while the roles of the I. aquatica MYB gene family with respect to Cd stress are still unclear. Here, we identified a total of 183 MYB genes in the I. aquatica genome (laMYB), which were classified into 66 1R-type IaMYB, 112 2R-type IaMYB, four 3R-type IaMYB, and one 4R-type IaMYB based on the number of the MYB repeat in each gene. The analysis of phylogenetic tree indicated that most of IaMYB genes are associated with the diverse biological processes including defense, development and metabolism. Analysis of sequence features showed that the IaMYB genes within identical subfamily have the similar patterns of the motif distributions and gene structures. Analysis of gene duplication events revealed that the dispersed duplication (DSD) and whole-genome duplication (WGD) modes play vital roles in the expansion of the IaMYB gene family. Expression profiling manifests that approximately 20% of IaMYB genes had significant role in the roots of I. aquatica under Cd stress. Promoter profiling implied that the differentially expressed genes might be induced by environmental factors or inherent hormones and thereby execute their function in Cd response. Remarkably, the 2R-type IaMYB157 with abundant light-responsive element G-box and ABA-responsive element ABRE in its promoter region exhibited very strong response to Cd stress. Taken together, our findings provide an important candidate IaMYB gene for further deciphering the molecular regulatory mechanism in plant with respect to Cd stress.

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“…The Arabidopsis plants at low temperature were imaged by a SPAD-502 chlorophyll (Chl) meter (Minolta, Tokyo, Japan), and SPAD values were recorded. The maximum quantum efficiency of PSII efficiency (Fv/Fm) was assessed using FluorCam7 Chl fluorescence imaging (Photon Systems Instruments, Brno, Czech Republic) and LI-6400 portable photosynthesis measurement system (LI-COR Inc., Lincoln, NE, USA) [ 60 ].…”

Section: Methodsmentioning

confidence: 99%

Overexpression of PgCBF3 and PgCBF7 Transcription Factors from Pomegranate Enhances Freezing Tolerance in Arabidopsis under the Promoter Activity Positively Regulated by PgICE1

Wang

Tong

et al. 2022

IJMS

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Cold stress limits plant growth, development and yields, and the C-repeat binding factors (CBFs) function in the cold resistance in plants. However, how pomegranate CBF transcription factors respond to cold signal remains unclear. Considering the significantly up-regulated expression of PgCBF3 and PgCBF7 in cold-tolerant Punica granatum ‘Yudazi’ in comparison with cold-sensitive ‘Tunisia’ under 4 °C, the present study focused on the two CBF genes. PgCBF3 was localized in the nucleus, while PgCBF7 was localized in the cell membrane, cytoplasm, and nucleus, both owning transcriptional activation activity in yeast. Yeast one-hybrid and dual-luciferase reporter assay further confirmed that PgICE1 could specifically bind to and significantly enhance the activation activity of the promoters of PgCBF3 and PgCBF7. Compared with the wild-type plants, the PgCBF3 and PgCBF7 transgenic Arabidopsis thaliana lines had the higher survival rate after cold treatment; exhibited increased the contents of soluble sugar and proline, while lower electrolyte leakage, malondialdehyde content, and reactive oxygen species production, accompanying with elevated enzyme activity of catalase, peroxidase, and superoxide dismutase; and upregulated the expression of AtCOR15A, AtCOR47, AtRD29A, and AtKIN1. Collectively, PgCBFs were positively regulated by the upstream PgICE1 and mediated the downstream COR genes expression, thereby enhancing freezing tolerance.

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Red and blue light function antagonistically to regulate cadmium tolerance by modulating the photosynthesis,antioxidant defense system and Cd uptake in cucumber(Cucumis sativus L.)

Cited by 34 publications

References 37 publications

Light Intensity- and Spectrum-Dependent Redox Regulation of Plant Metabolism

Light Intensity- and Spectrum-Dependent Redox Regulation of Plant Metabolism

Genome-wide identification of myeloblastosis gene family and its response to cadmium stress in Ipomoea aquatica

Overexpression of PgCBF3 and PgCBF7 Transcription Factors from Pomegranate Enhances Freezing Tolerance in Arabidopsis under the Promoter Activity Positively Regulated by PgICE1

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