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Identification of the protein that controls the red color of strawberries
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A research group from the University of Cordoba has characterized a new transcription factor that regulates the production of anthocyanins that give strawberries their red color during ripening.
Strawberries are a fruit that stands out for its color, aroma, flavor and texture. These aspects, known as organoleptic traits, determine strawberry quality and consumer preferences, as well as insect preferences that play a role in dispersing seeds and promoting the subsequent growth of future plants. A research group at the University of Cordoba Biotechnology and Phytopharmaceuticals, which has been studying the genetic regulation of strawberry ripening for several years under the direction of Juan Munoz Blanco, has identified proteins involved in controlling the production of red color in new strawberries. A protein known as a transcription factor (FaMYB123).
According to the study, part of UCO-trained researcher Félix J. Martínez-Rivas’ doctoral dissertation and published in The Plant Journal, this transcription factor is fundamental to the production of the pigment anthocyanins. Involved. For strawberries, it will have a characteristic red color. To verify this, we created transgenic His strawberry plants that silenced the expression of the FaMYB123 transcription factor. What they saw was that the amount of anthocyanins was suppressed in these transgenic plants compared to normal fruits. That is, without the listed transcription factors, strawberries would not produce all of their red color.
However, this protein alone cannot do this because transcription factors do not function in isolation but bind to each other. found to be associated with another factor (FabHLH3) in Both interactions contribute to increased anthocyanin production during ripening.
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This study, in short, provides new knowledge about the regulation of strawberry ripening. Knowing what controls red color allows us to genetically manipulate it or use it as a tool in research, such as “breeding programs that mix different varieties to produce new varieties”. In a country that is a major strawberry producer and led by the province of Huelva, it is important to know more about how strawberries ripen.
reference: Martinez Rivas FJ, Blanco Portales R, Ceratoza MP et al. FaMYB123 interacts with FabHLH3 to regulate the late stages of anthocyanin and flavonol biosynthesis during ripening. Factory J2023;114(3):683-698. Doi:10.1111/tpj.16166
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