Molecular Analysis of Medicago spp.—the Second Edition

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Development and Morphogenesis".

Deadline for manuscript submissions: closed (20 October 2022) | Viewed by 2570

Special Issue Editors


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Institute of Biosciences and Bioresources (IBBR), CNR,via Madonna Alta 130, 06128 Perugia, Italy
Interests: plant cell cycle and meiosis; plant development and reproduction; signal transduction via MAPK genes related to development and stress responses; plant functional genomics in model (Arabidopsis and Medicago truncatula) and crop species; bioenergy crops; biodiversity; heterosis
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Guest Editor
Dipartimento di Agraria University of Sassari, 07100 Sassari, Italy
Interests: gene structure; functional genomics; biodiversity; Medicago truncatula
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Trisaia Research Center, Italian National Agency for New Technologies Energy and Sustainable Economic Development, (ENEA), 75026 Rotondella, MT, Italy
Interests: plant science; functional genomics; transcriptomics; plant metabolites; plant development
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Legumes have received renewed attention as a source of high-value protein for food and feed, due to the high sustainability of their cultivation. In particular, their ability to fix nitrogen is beneficial to themselves and intercropped and subsequent crops. Medicago truncatula has gained importance in recent years as one of the main model species for legumes because of its relatively small genome, short lifecycle, and the possibility of transformation. Genome sequencing and resequencing, mutant collections, and the recent application of genome editing technologies have all contributed to a wider understanding of Medicago plant development, interaction with microorganisms, responses to biotic and abiotic stresses, and secondary metabolism.

In the current Special Issue, we welcome contributions in form of original articles, reviews, and short communications on the recent advances in the molecular analysis and biology of Medicago truncatula and Medicago spp.

Dr. Ornella Calderini
Prof. Dr. Andrea Porceddu
Dr. Francesco Panara
Guest Editors

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Keywords

  • Medicago
  • genomics
  • functional genomics
  • development
  • abiotic and biotic interaction
  • secondary compound

Published Papers (1 paper)

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Research

17 pages, 5986 KiB  
Article
Functional Characterization of MtrGSTF7, a Glutathione S-Transferase Essential for Anthocyanin Accumulation in Medicago truncatula
by Francesco Panara, Valentina Passeri, Loredana Lopez, Andrea Porceddu, Ornella Calderini and Francesco Paolocci
Plants 2022, 11(10), 1318; https://doi.org/10.3390/plants11101318 - 16 May 2022
Cited by 4 | Viewed by 2145
Abstract
Flavonoids are essential compounds widespread in plants and exert many functions such as defence, definition of organ colour and protection against stresses. In Medicago truncatula, flavonoid biosynthesis and accumulation is finely regulated in terms of tissue specificity and induction by external factors, [...] Read more.
Flavonoids are essential compounds widespread in plants and exert many functions such as defence, definition of organ colour and protection against stresses. In Medicago truncatula, flavonoid biosynthesis and accumulation is finely regulated in terms of tissue specificity and induction by external factors, such as cold and other stresses. Among flavonoids, anthocyanin precursors are synthesised in the cytoplasm, transported to the tonoplast, then imported into the vacuole for further modifications and storage. In the present work, we functionally characterised MtrGSTF7, a phi-class glutathione S-transferase involved in anthocyanin transport to the tonoplast. The mtrgstf7 mutant completely lost the ability to accumulate anthocyanins in leaves both under control and anthocyanin inductive conditions. On the contrary, this mutant showed an increase in the levels of soluble proanthocyanidins (Pas) in their seeds with respect to the wild type. By complementation and expression data analysis, we showed that, differently from A. thaliana and similarly to V. vinifera, transport of anthocyanin and proanthocyanidins is likely carried out by different GSTs belonging to the phi-class. Such functional diversification likely results from the plant need to finely tune the accumulation of diverse classes of flavonoids according to the target organs and developmental stages. Full article
(This article belongs to the Special Issue Molecular Analysis of Medicago spp.—the Second Edition)
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