DgbZIP3 interacts with DgbZIP2 to increase the expression of<i>DgPOD</i>for cold stress tolerance in chrysanthemum

Bai, Huiru; Liao, Xiaoqin; Li, Xin; Wang, Bei; Luo, Yunchen; Yang, Xiaohan; Tian, Yuchen; Zhang, Lei; Zhang, Fan; Pan, Yuanzhi; Jiang, Beibei; Yin, Jing; Liu, Qinglin

doi:10.1093/hr/uhac105

Cited by 18 publications

(9 citation statements)

References 57 publications

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“…We proposed that the co-activators could stimulate the DNA binding activity of their interacting partner without altering the mobility of the complex in the EMSA assays due to their unstable binding to the complex. Similar results were also found in previous studies, which reported that co-activator protein might enhance the DNA binding activity of target DNA without binding stably to the complex (Després et al, 2000;An et al, 2021;Bai et al, 2022).…”

Section: Discussionsupporting

confidence: 91%

MaBEL1 regulates banana fruit ripening by activating cell wall and starch degradation‐related genes

Song

Zhu

Lai

et al. 2023

JIPB

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Banana is a typical subtropical fruit, sensitive to chilling injuries and prone to softening disorder. However, the underlying regulatory mechanisms of the softening disorder caused by cold stress remain obscure. Herein, we found that BEL1‐LIKE HOMEODOMAIN transcription factor 1 (MaBEL1) and its associated proteins regulate the fruit softening and ripening process. The transcript and protein levels of MaBEL1 were up‐regulated with fruit ripening but severely repressed by the chilling stress. Moreover, the MaBEL1 protein interacted directly with the promoters of the cell wall and starch degradation‐related genes, such as MaAMY3, MaXYL32, and MaEXP‐A8. The transient overexpression of MaBEL1 alleviated fruit chilling injury and ripening disorder caused by cold stress and promoted fruit softening and ripening of “Fenjiao” banana by inducing ethylene production and starch and cell wall degradation. The accelerated ripening was also validated by the ectopic overexpression in tomatoes. Conversely, MaBEL1‐silencing aggravated the chilling injury and ripening disorder and repressed fruit softening and ripening by inhibiting ethylene production and starch and cell wall degradation. MaABI5‐like and MaEBF1, the two positive regulators of the fruit softening process, interacted with MaBEL1 to enhance the promoter activity of the starch and cell wall degradation‐related genes. Moreover, the F‐box protein MaEBF1 does not modulate the degradation of MaBEL1, which regulates the transcription of MaABI5‐like protein. Overall, we report a novel MaBEL1‐MaEBF1‐MaABI5‐like complex system that mediates the fruit softening and ripening disorder in “Fenjiao” bananas caused by cold stress.

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Section: Discussionsupporting

confidence: 91%

MaBEL1 regulates banana fruit ripening by activating cell wall and starch degradation‐related genes

Song

Zhu

Lai

et al. 2023

JIPB

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“…The ability of bZIP transcription factors to enhance plant tolerance to abiotic stress has been extensively reported; for example, in chrysanthemum, overexpression of DgbZIP3 and DgbZIP2 increases cold tolerance. Interestingly, DgbZIP3 and DgbZIP2 can also interact to regulate the expression of DgPOD , which can improve the tolerance of chrysanthemum to cold stress by promoting the increase of peroxidase activity and regulating the balance of reactive oxygen species ( Bai et al., 2022 ). Overexpression of GmbZIP2 in A.thaliana and soybean hairy roots can improve plant tolerance to salt and drought stress, and significantly increased expression of the soybean stress-responsive genes GmDHN15 , GmMYB48 , GmLEA , and GmWD40 is detected in transgenic hairy roots ( Yang et al., 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Identification of the bZIP gene family and regulation of metabolites under salt stress in isatis indigotica

Jiang

Wang²,

Ren³

et al. 2022

Front. Plant Sci.

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The bZIP transcription factor family plays important roles in plant growth and development, response to stress, and regulation of secondary metabolite biosynthesis. The identification and molecular function of bZIP gene have been deeply studied in the model plant Arabidopsis thaliana, but it has not been reported in the medicinal plant Isatis indigotica. In this study, 65 IibZIP genes were identified in the genome of I. indigotica, which were distributed on seven chromosomes, were highly conserved, could be classified into 11 subgroups. Transcriptomic and metabolomic data for leaves of I. indigotica exposed to salt stress were analyzed to construct an IibZIP gene co-expression network and metabolite correlation network. Seventeen IibZIP genes were co-expressed with 79 transcription factors, and GO and KEGG enrichment analysis showed that most of these genes were associated with abiotic stress and hormone responses of plants. 17 IibZIP genes regulated 110 metabolites through 92 transcription factor associations. In addition, IibZIP23, IibZIP38 and IibZIP51 were associated with six metabolites including three alkaloids (quinoline alkaloid stylopine, indole alkaloids tabersonine and indole-3-acetic acid), flavonoid myricetin 3-O-galactoside, and two primary metabolites 2-hydroxy-6-aminopurine, 3-dehydroshikimic acid were strongly correlated. This study provides data for identification of the IibZIP gene family and their regulation of metabolites in response to salt stress.

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“…Overexpression of the bZIP TFs, DgbZIP3 and DgbZIP2 increased cold tolerance in chrysanthemum. DgbZIP3 interacted with another TF, DgbZIP2 , which further regulated the expression of DgPOD , thereby reducing ROS accumulation and increasing tolerance [ 167 ]. Tian et al (2022) identified and characterized 23 TCP TF genes in C. nankingense , and the expression profiles of these CnTCP genes were downregulated under cold stress [ 168 ].…”

Section: Abiotic Stress Tolerancementioning

confidence: 99%

Towards the Improvement of Ornamental Attributes in Chrysanthemum: Recent Progress in Biotechnological Advances

Mekapogu

Kwon

Song

et al. 2022

IJMS

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Incessant development and introduction of novel cultivars with improved floral attributes are vital in the dynamic ornamental industry. Chrysanthemum (Chrysanthemum morifolium) is a highly favored ornamental plant, ranking second globally in the cut flower trade, after rose. Development of new chrysanthemum cultivars with improved and innovative modifications in ornamental attributes, including floral color, shape, plant architecture, flowering time, enhanced shelf life, and biotic and abiotic stress tolerance, is a major goal in chrysanthemum breeding. Despite being an economically important ornamental plant, the application of conventional and molecular breeding approaches to various key traits of chrysanthemum is hindered owing to its genomic complexity, heterozygosity, and limited gene pool availability. Although classical breeding of chrysanthemum has resulted in the development of several hundreds of cultivars with various morphological variations, the genetic and transcriptional control of various important ornamental traits remains unclear. The coveted blue colored flowers of chrysanthemums cannot be achieved through conventional breeding and mutation breeding due to technical limitations. However, blue-hued flower has been developed by genetic engineering, and transgenic molecular breeding has been successfully employed, leading to substantial progress in improving various traits. The recent availability of whole-genome sequences of chrysanthemum offers a platform to extensively employ MAS to identify a large number of markers for QTL mapping, and GWAS to dissect the genetic control of complex traits. The combination of NGS, multi-omic platforms, and genome editing technologies has provided a tremendous scope to decipher the molecular and regulatory mechanisms. However, the application and integration of these technologies remain inadequate for chrysanthemum. This review, therefore, details the significance of floral attributes, describes the efforts of recent advancements, and highlights the possibilities for future application towards the improvement of crucial ornamental traits in the globally popular chrysanthemum plant.

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DgbZIP3 interacts with DgbZIP2 to increase the expression ofDgPODfor cold stress tolerance in chrysanthemum

Cited by 18 publications

References 57 publications

MaBEL1 regulates banana fruit ripening by activating cell wall and starch degradation‐related genes

MaBEL1 regulates banana fruit ripening by activating cell wall and starch degradation‐related genes

Identification of the bZIP gene family and regulation of metabolites under salt stress in isatis indigotica

Towards the Improvement of Ornamental Attributes in Chrysanthemum: Recent Progress in Biotechnological Advances

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