Drought stress‐induced changes in starch yield and physiological traits in potato

Rudack, Katharina; Seddig, Sylvia; Sprenger, Heike; Köhl, Karin; Uptmoor, Ralf; Ordon, Frank

doi:10.1111/jac.12224

Cited by 62 publications

(42 citation statements)

References 75 publications

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“…Mije had moderate tolerance, with a maintenance of tuber fresh weight compared to Cardinal but was much less tolerant than clone 37 FB. The effects of water stress in potato have been widely studied at the phenotypic and physiological level [44][45][46], which includes analysis at the level of gene expression [18,47]. In our study, two landraces with tolerance to water stress in vitro [22] from southern Chile were analyzed for water stress tolerance in the greenhouse and, for the first time, RNAseq was used along with two commercial varieties the findings show differentially expressed genes in the tissue of leaf of plants grown under optimal irrigation compared to water-deficit conditions in the greenhouse.…”

Section: Discussionmentioning

confidence: 99%

Transcriptome Profiles of Contrasting Potato (Solanum tuberosum L.) Genotypes Under Water Stress

Barra¹,

Meneses

Riquelme³

et al. 2019

Agronomy

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The potato is susceptible to water stress at all stages of development. We examined four clones of tetraploid potato, Cardinal, Desirée, Clone 37 FB, and Mije, from the germplasm bank of the National Institute of Agricultural Research (INIA) in Chile. Water stress was applied by suspending irrigation at the beginning of tuberization. Stomatal conductance, and tuber and plant fresh and dry weight were used to categorize water stress tolerance. Cardinal had a high susceptibility to water stress. Desirée was less susceptible than Cardinal and had some characteristics of tolerance. Mije had moderate tolerance and Clone 37 FB had high tolerance. Differential gene expression in leaves from plants with and without water stress were examined using transcriptome sequencing. Water stress-susceptible Cardinal had the fewest differentially expressed genes at 101, compared to Desirée at 1867, Clone 37 FB at 1179, and Mije at 1010. Water stress tolerance was associated with upregulation of the expression of transcription factor genes and genes involved in osmolyte and polyamine biosynthesis. Increased expression of genes encoding late embryogenesis abundant (LEA) and dehydrin proteins along with decreased expression of genes involved in nitrate assimilation and amino acid metabolism were found for clones showing water stress tolerance. The results also show that a water deficit was associated with reduced biotic stress responses. Additionally, heat shock protein genes were differentially expressed in all clones except for highly susceptible Cardinal. Together, the gene expression study demonstrates variation in the molecular pathways and biological processes in response to water stress contributing to tolerance and susceptibility.

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Section: Discussionmentioning

confidence: 99%

Transcriptome Profiles of Contrasting Potato (Solanum tuberosum L.) Genotypes Under Water Stress

Barra¹,

Meneses

Riquelme³

et al. 2019

Agronomy

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“…Actually, starch also plays an important role. For example, Sulpice et al (2009) showed that starch is a connecting point between stress conditions and photosynthesis, abscisic acid and reactive oxygen species, and starch is one of the main long-term stored carbohydrates in plants [64][65][66]. NSCs are important substances involved in plant life processes.…”

Section: Discussionmentioning

confidence: 99%

Allocation Mechanisms of Non-Structural Carbohydrates of Robinia pseudoacacia L. Seedlings in Response to Drought and Waterlogging

Yang

Peng

Harrison

et al. 2018

Forests

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Climate change is likely to lead to an increased frequency of droughts and floods, both of which are implicated in large-scale carbon allocation and tree mortality worldwide. Non-structural carbohydrates (NSCs) play an important role in tree survival under stress, but how NSC allocation changes in response to drought or waterlogging is still unclear. We measured soluble sugars (SS) and starch in leaves, twigs, stems and roots of Robinia pseudoacacia L. seedlings that had been subjected to a gradient in soil water availability from extreme drought to waterlogged conditions for a period of 30 days. Starch concentrations decreased and SS concentrations increased in tissues of R. pseudoacacia seedlings, such that the ratio of SS to starch showed a progressive increase under both drought and waterlogging stress. The strength of the response is asymmetric, with the largest increase occurring under extreme drought. While the increase in SS concentration in response to extreme drought is the largest in roots, the increase in the ratio of SS to starch is the largest in leaves. Individual components of SS showed different responses to drought and waterlogging across tissues: glucose concentrations increased significantly with drought in all tissues but showed little response to waterlogging in twigs and stems; sucrose and fructose concentrations showed marked increases in leaves and roots in response to drought but a greater response to drought and waterlogging in stems and twigs. These changes are broadly compatible with the roles of individual SS under conditions of water stress. While it is important to consider the role of NSC in buffering trees against mortality under stress, modelling this behaviour is unlikely to be successful unless it accounts for different responses within organs and the type of stress involved.

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“…A total of 14 modern European starch potato cultivars (Eurobravo, Euroflora, Euronova, Euroresa, Eurostarch, Heidrun, Jasia, Kiebitz, Kolibri, Kormoran, Maxi, Sibu, Tomba, and Verdi) and three table cultivars as reference (Desiree, Topas, and Lambada) were used for the experiments. The cultivar set was selected according to differential drought response in pot trials (Rudack et al, 2017) and divergent response to N-deficiency under in vitro conditions (Schum & Jansen, 2014). A complete randomized split-plot design was conducted with four treatments: control (full water/high nitrogen [HN] supply), drought stress (no water/HN supply), N-deficiency (full water/low nitrogen [LN] supply) and stress combination (no water/LN supply, for details, see below).…”

Section: Methodsmentioning

confidence: 99%

Impact of nitrogen supply on leaf water relations and physiological traits in a set of potato (Solanum tuberosumL.) cultivars under drought stress

Meise

Seddig

Uptmoor

et al. 2018

J Agronomy Crop Science

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Improved adaptation of potato to limited water availability is needed for stable yields under drought. The maintenance of the cell water status and protection of cellular components against dehydration are important for drought tolerance, and the N status of plants affects the regulation of various respective metabolic processes. A 2‐year pot trial with 17 potato cultivars was conducted under a rain‐out shelter including two water regimes and two N‐levels to investigate genotypic differences concerning osmotic adjustment (OA) and relevant biochemical traits in relation to nitrogen (N) supply. Drought stress resulted in a rapid decrease in the leaf osmotic potential. The N, protein and proline contents increased under drought, while the N protein/NKjeldahl ratio decreased. Initially, total soluble sugars increased at both N‐levels but dropped back to the control level at high N‐availability under prolonged drought while remaining high in N‐deficient plants. Results indicate that potatoes have only a limited capacity of active OA and that increasing sugar and proline concentrations are rather associated with the protection of cellular components. High N supply promoted the N protein/NKjeldahl ratio at short‐term drought and enhanced proline accumulation. Significant genotypic differences were observed for all investigated traits.

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Drought stress‐induced changes in starch yield and physiological traits in potato

Cited by 62 publications

References 75 publications

Transcriptome Profiles of Contrasting Potato (Solanum tuberosum L.) Genotypes Under Water Stress

Transcriptome Profiles of Contrasting Potato (Solanum tuberosum L.) Genotypes Under Water Stress

Allocation Mechanisms of Non-Structural Carbohydrates of Robinia pseudoacacia L. Seedlings in Response to Drought and Waterlogging

Impact of nitrogen supply on leaf water relations and physiological traits in a set of potato (Solanum tuberosumL.) cultivars under drought stress

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