Gabriele Usai

Exploring the genetic diversity of Mediterranean fig trees highlights genes associated with fruit traits

Marco Castellacci, Gabriele Usai, Alberto Vangelisti, Samuel Simoni et autres

The fig tree ( Ficus carica L.) is a historically and economically important perennial crop in the Mediterranean region, valued for its fruit, leaves, and latex, which are employed in food, pharmaceutical, and cosmetic applications. Despite the agronomic and cultural relevance of …

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Haplotype‐resolved genome assembly of Ficus carica L. reveals allele‐specific expression in the fruit

Gabriele Usai, Tommaso Giordani, Alberto Vangelisti, Marco Castellacci et autres

In this study, we produced a haplotype-phased genome sequence of the fig tree (Ficus carica L.), a non-Rosaceae fruit tree model species, providing a systematic overview of the organization of a heterozygous diploid genome and, for the first time in a fruit …

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Improving Crop Tolerance to Abiotic Stress for Sustainable Agriculture: Progress in Manipulating Ascorbic Acid Metabolism via Genome Editing

Ugo Rogo, Ambra Viviani, Claudio Pugliesi, Marco Fambrini et autres

Plants often encounter challenging environmental factors, including intense sunlight, drought, extreme heat, cold temperatures, salinity, excessive metals, and nutrient shortages, which can heavily affect their growth and survival. In this regard, L-ascorbic acid (AsA) is not only an essential nutrient for human …

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Genome-Wide Characterization of Class III Peroxidases and Their Expression Profile During Mycorrhizal Symbiosis and Phosphorus Deprivation in Lettuce (Lactuca sativa L.)

Samuel Simoni, Marco Castellacci, Gabriele Usai, Ugo Rogo et autres

Lettuce cultivation requires high fertilizer inputs, which impact the environment and costs. Arbuscular mycorrhizal symbiosis (AMS) can reduce fertilizer use, enhance plant nutrition (especially phosphorus), and promote healthier plants. Class III peroxidases (PRXs) play crucial roles in various physiological processes and stress …

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Exploring the patterns of evolution: Core thoughts and focus on the saltational model

Gabriele Usai, Marco Fambrini, Claudio Pugliesi, Samuel Simoni

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Transcriptomic Analyses Reveal Insights into the Shared Regulatory Network of Phenolic Compounds and Steviol Glycosides in Stevia rebaudiana

Samuel Simoni, Alberto Vangelisti, Clarissa Clemente, Gabriele Usai et autres

Stevia rebaudiana (Bertoni) is a highly valuable crop for the steviol glycoside content in its leaves, which are no-calorie sweeteners hundreds of times more potent than sucrose. The presence of health-promoting phenolic compounds, particularly flavonoids, in the leaf of S. rebaudiana adds …

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Decoding the Genomic Landscape of Pomegranate: A Genome-Wide Analysis of Transposable Elements and Their Structural Proximity to Functional Genes

Samuel Simoni, Gabriele Usai, Alberto Vangelisti, Marco Castellacci et autres

Transposable elements (TEs) significantly drive dynamic changes that characterize genome evolution. However, understanding the variability associated with TE insertions among different cultivars remains challenging. The pomegranate (Punica granatum L.) has yet to be extensively studied regarding the roles of TEs in the …

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Genetic diversity and relationships among wild and cultivated Ficus carica L.: Usefulness of RGA markers

Sahar Haffar, Ghada Baraket, Gabriele Usai, Aymen Aounallah et autres

Disease resistance and the maintenance of genetic diversity in wild and cultivated populations are very important challenges to implement breeding program and markers assisted selection of Ficus carica L. facing climate change and its consequences. Resistance gene analogs (RGA) markers were used …

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Discovering the Repeatome of Five Species Belonging to the Asteraceae Family: A Computational Study

Maria Silvia Ventimiglia, Marco Castellacci, Gabriele Usai, Alberto Vangelisti et autres

Genome divergence by repeat proliferation and/or loss is a process that plays a crucial role in species evolution. Nevertheless, knowledge of the variability related to repeat proliferation among species of the same family is still limited. Considering the importance of the Asteraceae …

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Arbuscular symbiosis affects transcriptomic regulation of primary metabolism in leaves of soilless cultivated lettuces

Alberto Vangelisti, Samuel Simoni, Fatjon Cela, Luciano Avio et autres

Lettuce (Lactuca sativa) is an annual autogamous diploid plant belonging to Asteraceae and amongst the top ten most profitable crops worldwide. Nevertheless, one of the major problems for extensive lettuce cultivation is represented by fertiliser exploitation in soil and extra soil system. …

Genome‐wide identification and characterization of exapted transposable elements in the large genome of sunflower (Helianthus annuusL.)

Maria Silvia Ventimiglia, Giovanni Marturano, Alberto Vangelisti, Gabriele Usai et autres

Transposable elements (TEs) are an important source of genome variability, playing many roles in the evolution of eukaryotic species. Besides well-known phenomena, TEs may undergo the exaptation process and generate the so-called exapted transposable element genes (ETEs). Here we present a genome-wide …

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Induction of Somatic Embryogenesis in Plants: Different Players and Focus on WUSCHEL and WUS-RELATED HOMEOBOX (WOX) Transcription Factors

Marco Fambrini, Gabriele Usai, Claudio Pugliesi

In plants, other cells can express totipotency in addition to the zygote, thus resulting in embryo differentiation; this appears evident in apomictic and epiphyllous plants. According to Haberlandt's theory, all plant cells can regenerate a complete plant if the nucleus and the …

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