Climatic changes and potatoes: How can we cope with the abiotic stresses?

Abstract

Global climatic changes and abiotic stressesClimate change is an inevitable and unavoidable phenomenon globally, which affects all aspects of human life, including food security. Direct effects of climate change include temperature increase of the earth surface, drought in arid and semi-arid areas, uneven precipitation and unpredictably high precipitation (Andjelkovic 2018, Trenberth 2008. In 2016, the global temperature was 0.99°C warmer than in the middle of the 20 th century (NASA 2018). Whereas in the late 21 st century, the global mean surface temperature is projected to increase 1-3.7°C relative to the end of the 20 th century (IPCC 2014). In terms of uneven precipitation, an increase of annual mean precipitation is predicted in the high latitudes, equatorial pacific regions and some mid-latitude wet regions, while many mid-latitude and sub-tropical dry regions are expected to experience a decrease in annual mean precipitation by the end of this century (IPCC 2014).When plants are exposed to any kind of unfavorable environmental condition that causes reductions in growth and yield, they suffer abiotic stress. The conditions could be high temperature, low temperature, drought, metal toxicity, or salinity stress. In relation with climate change, high temperature (heat), drought and salinity are the most serious abiotic stresses. The increasing average global temperature triggers increases in heat stress events, whereas the decreasing annual mean precipitation in some mid-latitude and sub-tropical regions leads to water deficits (IPCC 2014). The low precipitation, together with high surface evaporation, weathering of rocks, seawater intrusion, and poor cultural practices, increases the problem of land-salinity (Duan 2016, Shrivastava and. Challenges for potato under climatic change with abiotic stressesPotato is the third largest food crop in the world after wheat Breeding Science Preview

Germplasm, Breeding, and Genomics in Potato Improvement of Biotic and Abiotic Stresses Tolerance

“…Potato suffers from various biotic and abiotic stresses, which may cause crop failure and yield loss depending on their severity. The key factors affecting potato cultivation are (a) biotic stresses including diseases like late blight, viruses, bacterial wilt, soil and tuber-borne diseases, insect-pests like aphids, whiteflies, thrips, mites, hoppers, potato tuber moths, and potato cyst nematodes (Singh et al, 2020); and (b) abiotic stresses like heat, drought, nutrient deficiency, salinity, and cold/frost stress (Handayani et al, 2019). Late blight is still the most serious disease of potato, however, in the current climate change scenario, viruses are becoming new threats especially for healthy seed production.…”

Genome-wide analysis, identification, evolution and genomic organization of dehydration responsive element-binding (DREB) gene family in Solanum tuberosum

“…Potato is highly adaptable to a wide range of ecosystems. According to FAO, over 388 million tons of potatoes were produced annually with consumption of over 239 million tons in 2017 (Handayani, Gilani & Watanabe, 2019). Being a wholesome food, potato is rich in vitamins, minerals and complex carbohydrates (Hussain, 2016 ).…”

Identification of Stable Potato Varieties from Exotic Sources for Table and Processing Purposes in Bangladesh

“…Usually, Jamalpur yields are better than those of the other stations, but this year, all the varieties, including checks, performed very poorly at this station. It might be due to some stress conditions, either from the fertilizer or water or from any other management problem (Handayani et al, 2019). PH -Plant height at 60 DAP (cm), NSH -Number of stems hill -1 , TY65 -Tuber yield at 65 DAP (t ha -1 ), DTM -Days to tuber maturity, TNH -Tuber number hill -1 , TWH -Tuber weight hill -1 (kg), TY95 -Tuber yield at 95 DAP (t ha -1 ), DM -Dry matter (%) Station average grades of tubers by weight and number are presented in Table 4.…”