Set up from the beginning: The origin and early development of cassava storage roots.
X-ray computed tomography
manioca
rhizogenesis
root bulking
root development
Journal
Plant, cell & environment
ISSN: 1365-3040
Titre abrégé: Plant Cell Environ
Pays: United States
ID NLM: 9309004
Informations de publication
Date de publication:
06 2022
06 2022
Historique:
revised:
21
10
2021
received:
10
08
2021
accepted:
22
10
2021
pubmed:
2
3
2022
medline:
18
5
2022
entrez:
1
3
2022
Statut:
ppublish
Résumé
Despite the importance of storage root (SR) organs for cassava and the other root crops yield, their developmental origin is poorly understood. Here we use multiple approaches to shed light on the initial stages of root development demonstrating that SR and fibrous roots (FR) follow different rhizogenic processes. Transcriptome analysis carried out on roots collected before, during and after root bulking highlighted early and specific activation of a number of functions essential for root swelling and identified root-specific genes able to effectively discriminate emerging FR and SR. Starch and sugars start to accumulate at a higher rate in SR before they swell but only after parenchyma tissue has been produced. Finally, using non-destructive computed tomography measurements, we show that SR (but not FR) contain, since their emergence from the stem, an inner channel structure in continuity with the stem secondary xylem, indicating that SR derive from a distinct rhizogenic process compared with FR.
Identifiants
pubmed: 35229892
doi: 10.1111/pce.14300
pmc: PMC9314696
doi:
Substances chimiques
Starch
9005-25-8
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1779-1795Informations de copyright
© 2022 The Authors. Plant, Cell & Environment published by John Wiley & Sons Ltd.
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