Cold-inducible MaC2H2s are associated with cold stress response of banana fruit via regulating MaICE1

C2H2 Zinc Finger Proteins: Master Regulators of Abiotic Stress Responses in Plants

“…C2H2-type zinc finger proteins with EAR motifs play important roles in regulating abiotic-stress-related gene expression under conditions such as salt, drought, and low temperature (Han and Fu, 2019). The DLNL sequence (DLNbox) at the C-terminus of STZ, with trans-activation activity, functions in the transcriptional activation of DREB1A under salt stress (Sakamoto et al, 2004;Kazan, 2006;Zhang et al, 2016c;Li et al, 2018), while the DLN-box is not the only domain that determines the transcriptional inhibitory activity of C2H2 zinc finger proteins (Huang et al, 2009a).…”

“…In banana, the overexpression of MaC2H2-2 and MaC2H2-3 significantly represses the transcription of MaICE1, a key component of the cold signaling pathway. Therefore, MaC2H2s might enhance cold resistance in banana by suppressing the transcription of MaICE1 (Han and Fu, 2019).…”

“…Various ciselements are present in the promoter regions of high salt-, drought-, and ABA-induced genes (Agarwal et al, 2006;Onishi et al, 2006). For example, C2H2-type zinc finger protein genes AZF2, AtSIZ1, and STZ contain cis-elements such as DRE (CCGAC), MYCRS (CANNTG), and MYBRS (RAACYR) elements in their promoter regions, conferring salt tolerance (Han et al, 2019). Protein kinases and ABA-dependent or -independent pathways (Zhang et al, 2014) directly or indirectly regulate C2H2 transcription factors, which in turn specifically activate or inhibit a group of target genes containing C2H2 zinc finger protein-binding sequences such as A [AG/CT] CNAC in their promoter regions, thereby enhancing plant stress tolerance (Figure 2).…”

Comprehensive Genomic Analysis and Expression Profiling of the C2H2 Zinc Finger Protein Family under Abiotic Stresses in Cucumber (Cucumis sativus L.)

“…Csa7G428260 transcript signals were detected only in flesh. MaC2H2-1/2 (two C2H2-ZFPs) is involved in the regulation of fruit ripening in banana via transcriptional repression of ethylene biosynthetic genes [28]. These results may reveal the similar biological roles of these genes in different species.…”

“…A number of C2H2-ZFPs from rice and Arabidopsis are implicated in trichome initiation, seed germination, floral organogenesis, leaf initiation, and lateral shoot initiation [18][19][20][21][22][23]. C2H2-ZFPs are also involved in the following plant biotic and abiotic stresses: cold, salt, drought, and abscisic acid (ABA) stress in rice and Arabidopsis [24][25][26][27]; cold stress in banana [28]; cold and drought stress in soybean [29]; and biotic stress in potato [11]. These studies demonstrate that C2H2-ZFPs are involved in multiple growth processes and stress responses in plants.Cucumber is one of the most important vegetables in the world.…”