Genetic Control of Storage Root Development

Kuznetsova, Ksenia; Додуева, И. Е.; Pautov, Anatoly; Krylova, Elena M.; Лутова, Л. А.

doi:10.1134/s102144372004010x

Cited by 5 publications

(1 citation statement)

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“…The mechanism of storage‐organ growth has recently been investigated in various root crops using different molecular, microscopy and metabolite measurement technologies. Up‐regulation of sucrose (Zhang et al, 2017), starch and storage protein biosynthesis, accompanied by delignification (Firon et al, 2013; Sun et al, 2015), cell wall and tissue functional differentiation (Ding et al, 2020; Firon et al, 2013; Kuznetsova et al, 2020) and phytohormone activation (Sojikul et al, 2015) are the major modifications identified in the thickening transition stage and final development into SR. Thus, even though differences between FR and SR have been identified, the earliest stages of SR development have not been studied, particularly at the molecular level, in any of the root crops, and the hypothetical signals changing an FR into an SR have yet to be discovered.…”

Section: Introductionmentioning

confidence: 99%

Set up from the beginning: The origin and early development of cassava storage roots

Carluccio

David

Claußen

et al. 2022

Plant Cell & Environment

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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.

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