Carbon partitioning mechanisms in POTATO under drought stress

Impacts of Water Stress Severity and Duration on Potato Photosynthetic Activity and Yields

“…This property has been studied for the expression of potato genes and a "memory" effect has been identified for stressed plants (Monneveux et al, 2013). While this memory capacity confers a level of resistance to the plant by the recombination of genes (Mane et al, 2008), a share of carbon is established that promotes its functioning, although its performance becomes limited (Aliche et al, 2020).…”

“…Potato is grown worldwide for its tubers and is a staple food in the global diet (Aliche et al, 2020). Its production is of particular economic importance, with potato ranked fourth globally in food crops behind maize, wheat and rice (Djebli et al, 2020).…”

Morphological and physiological responses of the potato stem transport tissues to dehydration stress

“…Biogold and Mondial retained a moderately low level of conductance under stress in their sink leaves during both day and night (Fig. 2), and from experiments of previous years had shown interesting contrasts in their dehydration response (Aliche et al, 2020). Therefore, we further investigated xylem flow, vessel structure, and sugar transport in the stem of Biogold and Mondial.…”

“…Four potato cultivars (Biogold, Festien, Hansa, and Mondial) were grown from seed tubers in the greenhouse at Unifarm, Wageningen University and Research, The Netherlands. The cultivars were selected based on their dehydration responses in previous greenhouse pot trials in which Biogold and Mondial showed the highest and lowest levels of stress resilience, respectively, in terms of tuberization potential and final tuber yield (Aliche et al 2020). Pre-sprouted seed tubers of the four cultivars were planted in 19 cm-diameter pots in October 2015 under greenhouse conditions of 16/8 h day/ night periods and 22.5/18.0 °C day/night temperatures.…”

“…1), with contrasting priorities for carbon partitioning suggesting a competition between tuber and above-ground tissues. The role of molecular determinants like invertases, sucrose synthases, and sucrose transporters in this sink competition may, however, not be ruled out (Herbers and Sonnewald 1998;Aliche et al 2020). Taken together, under limited water availability in the xylem conduits, sink strength may influence the direction of assimilate transport.…”