Analysis of the structure and function of the tomato Solanum lycopersicum L. MADS-box gene SlMADS5.

At all stages of f lowering, a decisive role is played by the family of MADS-domain transcription factors, the combinatorial action of which is described by the ABCDE-model of f lower development. The current volume of data suggests a high conservatism of ABCDE genes in angiosperms. The E-proteins SEPALLATA are the central hub of the MADS-complexes, which determine the identity of the f loral organs.

Characterization of Isoforms and Their Expression in Tomato Fruit Ripening.

Ripening of tomato fleshy fruit is coordinated by transcription factor RIN, which triggers ethylene and carotenoid biosynthesis, sugar accumulation, and cell wall modifications. In this study, we identified and characterized complete sequences of the chromosomal locus in two tomato cultivars, its genotype, and three wild green-fruited species differing in fruit color and composition. The results reveal that .

× Transcriptome Profiling Reveals a Similarity Between the Evolutionary Origins of Carnivorous Traps and Floral Organs.

The emergence of the carnivory syndrome and traps in plants is one of the most intriguing questions in evolutionary biology. In the present study, we addressed it by comparative transcriptomics analysis of leaves and leaf-derived pitcher traps from a predatory plant × . Pitchers were collected at three stages of development and a total of 12 transcriptomes were sequenced and assembled .

Differential Regulation of Phytoene Synthase PSY1 During Fruit Carotenogenesis in Cultivated and Wild Tomato Species ( section Lycopersicon).

In plants, carotenoids define fruit pigmentation and are involved in the processes of photo-oxidative stress defense and phytohormone production; a key enzyme responsible for carotene synthesis in fruit is phytoene synthase 1 (PSY1). Tomatoes ( section Lycopersicon) comprise cultivated () as well as wild species with different fruit color and are a good model to study carotenogenesis in fleshy fruit. In this study, we identified homologous genes in five section Lycopersicon species, including domesticated red-fruited and wild yellow-fruited and green-fruited , and .

Structural and Functional Diversification of SEPALLATA Genes TM5 and RIN in Tomato Species (Section Lycopersicon).

New TOMATO MADS 5 (TM5) homologous genes were identified in evolutionarily recent, red-fruited and more ancient, wild green-fruited tomato species. It was shown that the identified TM5 homologs belong to the SEPALLATA3 clade; thus, the SEP subfamily diversification was characterized. For the first time, the TM5 and RIN co-expression pattern was determined in flowers, immature green fruits, and ripe fruits of Solanum lycopersicum and in five wild tomato species.