Expression Analysis of TCP Genes in Peach Reveals an Involvement of PpTCP.A2 in Ethylene Biosynthesis During Fruit Ripening

Genome-wide identification and transcript analysis of TCP transcription factors in grapevine

“…The plant-specific TCP transcription factors are known to play important roles in diverse aspects of physiological and biological processes during plant growth and development. To date, the TCP gene family have been investigated and characterized in various plant species such as Arabidopsis [32], tomato [21], apple [33], strawberry [31] and peach [22]. However, virtually no systematic and…”

Genome-wide identification and transcript analysis of TCP transcription factors in grapevine

“…The plant-specific TCP transcription factors are known to play important roles in diverse aspects of physiological and biological processes during plant growth and development. To date, the TCP gene family have been investigated and characterized in various plant species such as Arabidopsis [32], tomato [21], apple [33], strawberry [31] and peach [22].…”

“…Of these nine genes, VvTCP7, VvTCP9 and VvTCP12 which were individually homologous of SlTCP15, SlTCP12 and SlTCP18, might be involved in fruit development, due to the high levels of expression in the developing grapevine fruit (Figure 7 and 8). In peach, the expression of PpTCP.A2 was negatively correlated to fruit ripening, and silencing of PpTCP.A2 enhanced the expression of PpACS1 and increased ethylene production, indicating that PpTCP.A2 was probably involved in fruit ripening by regulating ethylene biosynthesis [22]. Similarly, the expression of VvTCP2, which was a homologous gene of PpTCP.A2, was consistent with the expression profile of PpTCP.A2 and implied that the VvTCP2 gene was likely to play similar roles to PpTCP.A2 in grapevine fruit development and ripening.…”

“…AtTCP16 is observably expressed in developing microspores, and its down-regulation generated 50% abnormal pollen in transgenic plants [20]. Recently, strong experimental evidences support that class I members of TCP proteins could be implicated in fruit development and ripening [21,22]. Three tomato TCP genes (SlTCP12, SlTCP15 and SlTCP18) are preferentially expressed in the tomato fruit and their expressions are regulated by ripening-related transcription factor, such as RIPENING INHIBITOR (RIN) and COLORLESS NON-RIPENING (CNR) [21].…”

“…To date, a number of TCP family members have been characterized in various plants with the completion of entire genome, such as Arabidopsis [32], tomato [21], apple [33], strawberry [31] and peach [22]. However, the TCP transcription factor family has not been systematically identified in grapevine, which is one of the most important fruit crop growing around the world with great nutritive and commercial value [34][35][36].…”