Expression profiling of potato cultivars with contrasting tuberization at elevated temperature using microarray analysis

Singh, Anupama; Siddappa, S.; Bhardwaj, Vinay; Singh, Brajesh; Kumar, Devendra; Singh, B. P.

doi:10.1016/j.plaphy.2015.09.014

Cited by 38 publications

(19 citation statements)

References 29 publications

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“…Thus, modulation of StSP6A appears to be a valuable target to improve tuberization and tuber growth under elevated temperatures. This view is supported by a recent study from Singh et al (2015) showing that StSP6A expression level was higher at elevated temperatures in a heat-tolerant than in a heatsuspectible genotype.…”

Section: Naked Pinssupporting

confidence: 54%

“…This is in line with earlier studies showing that photosynthesis decreases in potato plants at higher temperatures (Hammes & De Jager, ; Prange et al, ). However, other studies reported that photosynthetic rate was increased or unaffected in moderately heat‐resistant genotypes such as Desirée and Norchip in response to increased temperatures (approximately 30°C; Hancock et al, ; Lafta & Lorenzen, ; Singh et al, ). According to results from a screening for heat‐tolerance by Savić et al (), cv.…”

Section: Resultsmentioning

confidence: 97%

“…Elevated temperatures have a profound effect on many developmental and physiological processes in potato plants. Thus, high temperatures induce stem elongation and increased leaf number (Lafta & Lorenzen, 1995;Wolf et al, 1991), reduce the rate of photosynthesis (Hammes & De Jager, 1990;Prange, McRae, Midmore, & Deng, 1990), alter allocation of assimilates (Lafta & Lorenzen, 1995;Wolf et al, 1991), inhibit tuber formation (Singh et al, 2015;Van Dam, Kooman, & Struik, 1996), and cause the appearance of disorders, such as second tuber growth (Bodlaender, Lugt, & Marinus, 1964). Considering the rise in temperature due to global warming, there is a strong demand to develop heat-tolerant varieties that sustain high yields under these conditions (Levy & Veilleux, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Deciphering source and sink responses of potato plants (Solanum tuberosum L.) to elevated temperatures

Hastilestari

Lorenz

Reid

et al. 2018

Plant Cell & Environment

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Potato is an important staple food with increasing popularity worldwide. Elevated temperatures significantly impair tuber yield and quality. Breeding heat-tolerant cultivars is therefore an urgent need to ensure sustainable potato production in the future. An integrated approach combining physiology, biochemistry, and molecular biology was undertaken to contribute to a better understanding of heat effects on source- (leaves) and sink-organs (tubers) in a heat-susceptible cultivar. An experimental set-up was designed allowing tissue-specific heat application. Elevated day and night (29°C/27°C) temperatures impaired photosynthesis and assimilate production. Biomass allocation shifted away from tubers towards leaves indicating reduced sink strength of developing tubers. Reduced sink strength of tubers was paralleled by decreased sucrose synthase activity and expression under elevated temperatures. Heat-mediated inhibition of tuber growth coincided with a decreased expression of the phloem-mobile tuberization signal SP6A in leaves. SP6A expression and photosynthesis were also affected, when only the belowground space was heated, and leaves were kept under control conditions. By contrast, the negative effects on tuber metabolism were attenuated, when only the shoot was subjected to elevated temperatures. This, together with transcriptional changes discussed, indicated a bidirectional communication between leaves and tubers to adjust the source capacity and/or sink strength to environmental conditions.

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Section: Naked Pinssupporting

confidence: 54%

Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Deciphering source and sink responses of potato plants (Solanum tuberosum L.) to elevated temperatures

Hastilestari

Lorenz

Reid

et al. 2018

Plant Cell & Environment

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show abstract

“…In addition, by using the first difference method, the change in potato yield in Xinjiang was negatively correlated with the change in the daily minimum air temperature. Unsuitable night temperatures hinder tuber formation, enhance respiration and accelerate the consumption of assimilates such as starch [42,43]. In areas with a similar climate, Zhang et al [21] showed that changes in air temperature was an important driving factor that affected potato yields in northern China.…”

Section: Effects Of Different Climatic Factors On Potato Yieldsmentioning

confidence: 99%

Impacts of Recent Climate Change on Potato Yields at a Provincial Scale in Northwest China

Zhang

2020

Agronomy

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Understanding the effects of climate change on potato yield is vital for food security in northwest China. Based on the long-term data of yields and meteorology, this study analysed the impacts of recent climate change on potato yields at a provincial scale in northwest China. The first difference method was used to disentangle the contributions of climate change from the changes in potato yield in two consecutive years. The moving average method was used to decouple the climate-induced yield of potato. The results showed that the yield and planting area of potato from the period 1982 to 2015 increased markedly, with inter-annual fluctuations. The temperature increased significantly during the potato growing period in northwest China, while other climatic factors did not change significantly. Specifically, the changing trends in climatic factors varied among different provinces. The key meteorological factors limiting potato yield were temperature, precipitation and diurnal temperature range, varying in the different provinces. Potato yields in Gansu, Shaanxi, Ningxia and Xinjiang decreased by 127, 289, 199 and 339 kg ha−1, respectively, for every 1 °C increase in daily maximum temperature. The potato yield in Xinjiang decreased by 583 kg ha−1 for every 1 °C increase in daily minimum temperature. For every 100 mm increase in precipitation, the potato yields in Gansu, Qinghai and Ningxia increased by 250, 375 and 182 kg ha−1, respectively. Combining the first difference method and the moving average method, precipitation was the dominant climatic factor affecting potato yield in rain-fed areas (Gansu, Qinghai and Ningxia). For areas with irrigation (Xinjiang) or relatively high rainfall (Shaanxi), maximum temperature was the deciding climatic factor affecting potato yield. Appropriate adaptation to climate change in the different regions will help to ensure potato production in northwest China.

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“…Moreover, wild species and various landraces of various crops have unknown heat tolerant genes that should be identified and incorporated to high yielding modern cultivars 5 . The functional genomic approaches such as genome wide association studies (GWAS) and gene expression profiling using microarrays can catalyse the discovery of novel genes associated to heat stress 6– 8 . In addition, suppression subtractive hybridization (SSH) is another effective and productive technique used for the screening and cloning of the genes/ESTs that express differentially under heat stress 9, 10 .…”

Section: Introductionmentioning

confidence: 99%

Functional genomic approaches to improve crop plant heat stress tolerance

et al. 2019

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Heat stress as a yield limiting issue has become a major threat for food security as global warming progresses. Being sessile, plants cannot avoid heat stress. They respond to heat stress by activating complex molecular networks, such as signal transduction, metabolite production and expressions of heat stress-associated genes. Some plants have developed an intricate signalling network to respond and adapt it. Heat stress tolerance is a polygenic trait, which is regulated by various genes, transcriptional factors, proteins and hormones. Therefore, to improve heat stress tolerance, a sound knowledge of various mechanisms involved in the response to heat stress is required. The classical breeding methods employed to enhance heat stress tolerance has had limited success. In this era of genomics, next generation sequencing techniques, availability of genome sequences and advanced biotechnological tools open several windows of opportunities to improve heat stress tolerance in crop plants. This review discusses the potential of various functional genomic approaches, such as genome wide association studies, microarray, and suppression subtractive hybridization, in the process of discovering novel genes related to heat stress, and their functional validation using both reverse and forward genetic approaches. This review also discusses how these functionally validated genes can be used to improve heat stress tolerance through plant breeding, transgenics and genome editing approaches.

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Expression profiling of potato cultivars with contrasting tuberization at elevated temperature using microarray analysis

Cited by 38 publications

References 29 publications

Deciphering source and sink responses of potato plants (Solanum tuberosum L.) to elevated temperatures

Deciphering source and sink responses of potato plants (Solanum tuberosum L.) to elevated temperatures

Impacts of Recent Climate Change on Potato Yields at a Provincial Scale in Northwest China

Functional genomic approaches to improve crop plant heat stress tolerance

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