New Insights into Plant Extracellular DNA. A Study in Soybean Root Extracellular Trap

Marie Chambard (1) , Carole Plasson (1) , Céline Derambure (2) , Sophie Coutant (2) , Isabelle Tournier (2) , Benjamin Lefranc (3) , Jérôme Leprince (3) , Marie-Christine Kiefer-Meyer (1) , Azeddine Driouich (1) , Marie-Laure Follet-Gueye (1) , Isabelle Boulogne (1)

1 Glyco-MEV - Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale
2 Service de Génétique [CHU Rouen]
3 PRIMACEN - Plate-Forme de Recherche en Imagerie Cellulaire de Haute-Normandie

exDNA is found in various organisms, including plants. However, plant exDNA has thus far received little attention related to its origin and role in the RET (root extracellular trap). In this study, we performed the first high-throughput genomic sequencing of plant exDNA from a Fabaceae with worldwide interest: soybean (Glycine max (L.) Merr.). The origin of this exDNA was first investigated in control condition, and the results show high-coverage on organelles (mitochondria/plastid) DNA relative to nuclear DNA, as well as a mix of coding and non-coding sequences. In the second part of this study, we investigated if exDNA release was modified during an elicitation with PEP-13 (a peptide elicitor from oomycete genus Phytophthora). Our results show that treatment of roots with PEP-13 does not affect the composition of exDNA.

Mots clés: Glycine max (L.) Merr; PEP-13; High-throughput DNA sequencing; Plant exDNA; Root extracellular trap (RET)

Domaines: Biologie végétale; Biologie cellulaire; Interactions cellulaires [q-bio.CB]; Biologie du développement; Biochimie [q-bio.BM]; Biologie moléculaire; Biotechnologies; Amélioration des plantes; Phytopathologie et phytopharmacie; Génomique, Transcriptomique et Protéomique [q-bio.GN]; Organisation et fonctions cellulaires [q-bio.SC]

Marie Chambard, Carole Plasson, Céline Derambure, Sophie Coutant, Isabelle Tournier, et al.. New Insights into Plant Extracellular DNA. A Study in Soybean Root Extracellular Trap. Cells, 2021, 10 (1), pp.69. ⟨10.3390/cells10010069⟩. ⟨hal-03101797⟩