Growth rate and carbohydrate metabolism of potato tubers exposed to high temperatures

Krauss, A.; Marschner, H.

doi:10.1007/bf02357638

Cited by 100 publications

(47 citation statements)

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“…From experiments conducted in growth chambers it is known that haulm growth is fastest in the temperature range of 20-25°C whereas the optimal range for tuberization and tuber growth is 15-20°C. Under hightemperature conditions, tuberization is significantly inhibited and photoassimilate partitioning to tubers is greatly reduced (Ewing 1981;Haynes et al 1989;Krauss and Marschner 1984;Lafta and Lorenzen 1995). Heat stress due to increased temperature is an agricultural problem in many areas in the world (Birch et al 2012).…”

Section: Introductionmentioning

confidence: 99%

The Effect of High Temperature Occurring in Subsequent Stages of Plant Development on Potato Yield and Tuber Physiological Defects

Rykaczewska

2015

Am. J. Potato Res.

132

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Potato (Solanum tuberosum L.) is characterized by specific temperature requirements and develops best at about 20°C. High temperatures during the growing season cause an array of changes in potato plants, which affect its development and may lead to a drastic reduction in economic yield. In natural conditions drought and heat stress are two different types of abiotic stresses that occur in the field simultaneously or separately, in the case of irrigation use on potato plantations. The aim of this work was to assess the response of six potato cultivars to high temperature during the subsequent stages of plant growth under conditions of good soil moisture and drought. The pot experiment was carried out with the cultivars: Aruba, Desirée, Etola, Finezja, Flaming and Tetyda. The impact of high temperature day/ night 35°C/25°C on potato plants was tested in three periods: June 16-30, July 1-15 and July 16-30. In these periods half of the plants were watered to a level close to optimal, while the other half remained without irrigation. Final harvest was performed after full maturity of plants in the control combination. Our studies confirm the view that potato productivity is greatly reduced at temperatures higher than optimum. Here we demonstrated that tested potato cultivar's response to high temperature during the growing season is dependent on the growth stage. The earlier a heat occurs, the more negative its impact on the growth and total yield of potatoes. The results obtained in this study indicate that among the tested cultivars 'Tetyda' was the most tolerant to high temperature acting on the plants during the growing season. Our research shows that the total yield is not the only indicator of potato tolerance to high temperature during the growing season, but the assessment should also take into account the occurrence of secondary tuberization and physiological defects of tubers.Resumen La papa (Solanum tuberosum L.) se caracteriza por requerimientos específicos de temperatura y se desarrolla mejor a cerca de 20°C. Las altas temperaturas durante el ciclo del cultivo causa un arreglo de cambios en las plantas, que afecta su desarrollo y pudiera conducir a reducción drástica en el rendimiento económico. En condiciones naturales la sequía y el agobio térmico son dos tipos diferentes de agobios abióticos que se presentan en el campo simultáneamente o por separado, en el caso de siembras de papa de riego. El propósito de este trabajo fue evaluar la respuesta de seis variedades de papa a la alta temperatura durante los estados subsecuentes de crecimiento de la planta bajo condiciones de buena humedad del suelo y bajo sequía. El experimento en macetas se desarrolló con las variedades Aruba, Desirée, Etola, Finezja, Flaming y Tetyda. Se probó el impacto de la alta temperatura día/noche 35°C/25°C en plantas de papa en tres períodos: junio 16-30, julio 1-15 y julio 16-30. En estos lapsos la mitad de las plantas se regaron a un nivel cercano a lo óptimo, mientras que la otra mitad permaneció sin riego. La cosec...

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Section: Introductionmentioning

confidence: 99%

The Effect of High Temperature Occurring in Subsequent Stages of Plant Development on Potato Yield and Tuber Physiological Defects

Rykaczewska

2015

Am. J. Potato Res.

132

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Section: Introductionmentioning

confidence: 99%

“…Growth of the potato tuber is closely linked to starch synthesis, and physiological studies with whole tubers still attached to the parent plant have indicated that higher temperatures could reduce yields by inhibiting starch synthesis in the tuber (17,24,28,33). However, interpretation ofthe results of these studies has been complicated by the possible influence of a temperature-dependent redistribution of plant growth regulators, especially gibberellin ( 17,28), and the sensitivity of starch synthesis per se to higher temperatures has remained unknown. Thus, the present work was carried out to determine the temperature optimum for starch synthesis in excised potato tuber tissue supplied with sucrose and in cellfree amyloplasts supplied with triose-P. were taken from plants grown in Reading, either in the open ground during the summer or in a glass house with supplementary heating (15-20°C) and lighting (13 h daylength) during winter.…”

Section: Introductionmentioning

confidence: 99%

Effect of Temperature on Starch Synthesis in Potato Tuber Tissue and in Amyloplasts

Mohabir¹,

John²

1988

Plant Physiol.

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A sharp temperature optimum is observed at 21.5°C when the incorporation of ["4Clsucrose into starch is measured with discs cut from developing tubers of potato (Solanum tuberosum L. cv Desiree). By contrast, increasing temperatures over the range 9 to 31°C only enhance release of '4C to respiratory CO2 and incorporation of '4C into the ethanolsoluble fraction. By comparison, starch synthesis in discs from developing corms of cocoyam (Colocasia esculenta L. Schott) is increased by raising the temperature from 15 to 35°C. The significance of a relatively low temperature optimum for starch synthesis in potato is discussed in relation to the yield limitations imposed by continuously high soil temperatures. Amyloplasts isolated from protoplasts prepared from developing potato tubers contain activities of alkaline pyrophosphatase, NADdependent glyceraldehyde-3-phosphate dehydrogenase, fructose-1,6-bisphosphatase, and phosphoglucomutase in addition to ADP-glucose-pyrophosphorylase, starch phosphorylase and starch synthase. Cell-free amyloplasts released by thinly slicing developing potato tubers synthesize starch from I'4Cltriose-phosphate generated from phosphate in the reaction medium. This starch synthesis is inhibited by addition of 10 millimolar inorganic phosphate and requires amyloplast integrity, suggesting the operation of a triose-phosphate/inorganic phosphate exchange carrier at the amyloplast membrane. The temperature optimum at 21.5°C observed with tissue discs is not observed with amyloplasts.The yield of potatoes in the warm tropics is limited by the continuously high soil temperatures (1). Growth of the potato tuber is closely linked to starch synthesis, and physiological studies with whole tubers still attached to the parent plant have indicated that higher temperatures could reduce yields by inhibiting starch synthesis in the tuber (17,24,28,33). However, interpretation ofthe results of these studies has been complicated by the possible influence of a temperature-dependent redistribution of plant growth regulators, especially gibberellin ( 17,28), and the sensitivity of starch synthesis per se to higher temperatures has remained unknown. Thus, the present work was carried out to determine the temperature optimum for starch synthesis in excised potato tuber tissue supplied with sucrose and in cellfree amyloplasts supplied with triose-P. were taken from plants grown in Reading, either in the open ground during the summer or in a glass house with supplementary heating (15-20°C) and lighting (13 h daylength) during winter. Developing corms of cocoyam (Colocasia esculenta L. Schott) were taken from plants grown under natural lighting in a heated glasshouse. Tubers and corms were washed, surface sterilized, and peeled before use. In the glasshouses, plants were grown in potting compost contained in I0-L polythene tubs and watered daily. MATERIALS AND METHODSPreparation of Discs and Measurement of Sucrose Uptake into Different Fractions. Potato tubers or cocoyam corms were sliced to 1 mm thickness,...

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“…High temperature negatively affects the tuber initiation and development by inhibiting the tuberization signal, StSP6A, which is an orthologue of the Arabidopsis FLOWERING LOCUS T (FT) protein (Ewing, 1981;Navarro et al, 2011). High temperature also causes nutrient sourcesink problems by decreasing the carbon assimilation in tubers (Wolf et al, 1990(Wolf et al, , 1991 and inhibits tuber filling (Krauss and Marschner, 1984). Hence, high temperature, in turn, leads to reduced tuber quality and yield (Borah and Milthorpe, 1962).…”

Section: Potato Transcriptomics In Drought and Heat Stressesmentioning

confidence: 99%

Recent advances in potato genomics, transcriptomics, and transgenicsunder drought and heat stresses: a review

Aksoy

Demirel²,

Öztürk³

et al. 2015

Turk J Bot

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Sustainable potato production practices are crucial for food security and social sustainability in the future since potato is a highly nutritious food and it is considered as one of the most promising crops to reduce human hunger and poverty in the world due to its high yield potential. However, being a temperate crop, potato is exposed to various environmental stresses, including extended periods of drought and heat. The majority of potato genomics, transcriptomics, and transgenics studies concentrate on the characterization of molecular mechanisms governing cold hardiness of tubers and response and tolerance mechanisms against diseases. Likewise, potato breeding studies focus on increasing the yield, extending the postharvest storage, and developing cultivars that withstand biotic stresses. The number of genomics, transcriptomics, and transgenics studies of drought and heat tolerance in potato is limited, although they are necessary state-of-the-art research procedures to characterize and identify the regulatory mechanism underlying any stresses in order to develop new crop varieties that can tolerate harsh environmental conditions. For these reasons, this review focuses on recent advances in genomics, transcriptomics, and transgenics of drought and heat tolerance in potato.

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Growth rate and carbohydrate metabolism of potato tubers exposed to high temperatures

Cited by 100 publications

References 7 publications

The Effect of High Temperature Occurring in Subsequent Stages of Plant Development on Potato Yield and Tuber Physiological Defects

The Effect of High Temperature Occurring in Subsequent Stages of Plant Development on Potato Yield and Tuber Physiological Defects

Effect of Temperature on Starch Synthesis in Potato Tuber Tissue and in Amyloplasts

Recent advances in potato genomics, transcriptomics, and transgenicsunder drought and heat stresses: a review

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