Heat Tolerance and Assimilate Transport in Different Potato Genotypes

Basu, Partha; Minhas, J. S.

doi:10.1093/jxb/42.7.861

Cited by 57 publications

(40 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The trend is similar to that observed by Basu and Minhas (1991), who reported that "heat-tolerant" potato cultivars had more SI' S activity than "heatsusceptible" genotypes. However, it is difficult to make a comparison with that study, since their tolerant group was composed of potato genotypes adapted to long days, whereas the susceptible group was composed of genotypes adapted to SD, winter production in the plains of India.…”

supporting

confidence: 89%

Effect of High Temperature on Plant Growth and Carbohydrate Metabolism in Potato

1995

View full text Add to dashboard Cite

This study was undertaken to determine the role of sucrosemetabolizing enzymes in altered carbohydrate partitioning caused by heat stress. Potato (Solanum tuberosum L.) genotypes characterized as susceptible and tolerant to heat stress were grown at 19/ 17"C, and a subset was transferred to 31/29"C. Data were obtained for plant growth and photosynthesis. Enzyme activity was determined for sucrose-6-phosphate synthase (SPS) in mature leaves and for sucrose synthase, ADP-glucose pyrophosphorylase, and UDPglucose pyrophosphorylase in developing tubers of plants. High temperatures reduced growth of tubers more than of shoots. Photosynthetic rates were unaffected or increased slightly at the higher temperature. Heat stress increased accumulation of foliar sucrose and decreased starch accumulation in mature leaves but did not affect glucose. SPS activity increased significantly in mature leaves of plants subjected to high temperature. Changes in SPS activity were probably not due to altered enzyme kinetics. l h e activity of sucrose synthase and ADP-glucose pyrophosphorylase was reduced in tubers, albeit less quickly than leaf SPS activity. There was no interaction of temperature and genotype with regard to the enzymes examined; therefore, observed differences do not account for differences between genotypes in heat susceptibility.

show abstract

supporting

confidence: 89%

Effect of High Temperature on Plant Growth and Carbohydrate Metabolism in Potato

1995

View full text Add to dashboard Cite

show abstract

“…High soil temperatures during tuber development adversely affect both tuber formation (Ewing 1981) and starch content in tubers (Krauss & Marschner 1984;Basu & Minhas 1991;Gawronska et al 1992;Malik et al 1992). Cultivar evaluation and/or screening for tuber initiation and bulking under heat stress conditions have been performed in the field or in greenhouse conditions, although these processes require considerable amounts of space and time.…”

Section: In Vitro Tuberization Of Transgenic Potato Plantsmentioning

confidence: 99%

Introduction of the carrot HSP17.7 into potato (Solanum tuberosum L.) enhances cellular membrane stability and tuberization in vitro

Ahn

Zimmerman

2005

Plant Cell & Environment

View full text Add to dashboard Cite

We have examined the ability of a carrot (Daucus carota L.) heat shock protein gene encoding HSP17.7 (DcHSP17.7) to confer enhanced heat tolerance to potato (Solanum tuberosum L.), a cool‐season crop. The DcHSP17.7 gene was fused to a 6XHistidine (His) tag to distinguish the engineered protein from endogenous potato proteins and was introduced into the potato cultivar ‘Désirée’ under the control of the cauliflower mosaic virus (CaMV) 35S promoter. Western analysis showed that engineered DcHSP17.7 was constitutively, but not abundantly, expressed in transgenic potato lines before heat stress. Leaves from multiple regenerated potato lines that contain the transgene exhibited significantly improved cellular membrane stability at high temperatures, compared with wild‐type and vector control plants. Transgenic potato lines also exhibited enhanced tuberization in vitro: under a condition of constant heat stress, at 29 °C, nodal sections of the transgenic lines produced larger and heavier microtubers at higher rates, compared to the wild type and vector controls. The dry weight and percentages of microtubers that were longer than 5 mm were up to three times higher in the transgenic lines. Our results suggest that constitutive expression of carrot HSP17.7 can enhance thermotolerance in transgenic potato plants. To our knowledge, this is the first study that shows that the thermotolerance of potato can be enhanced through gene transfer.

show abstract

“…Elevated temperatures accelerate leaf senescence and double respiration rates for each 10 0 C increase, resulting in a negative carbon balance on hot days [2]. Tuber initiation is restricted in most genotypes, when night temperatures exceed17 0 C [3] and the optimal temperature for tuber bulking ranges between 14 0 C and 22 0 C. Higher temperatures decrease tuber growth [4] and can cause misshapen or chain tubers, high sugar levels, low starch contents, and glycoalkaloid accumulation [5]. Under hot and dry conditions, high vapor pressure deficit increases transpiration and insufficient water supply causes drought stress, resulting in yield losses.…”

Section: Introductionmentioning

confidence: 99%

Role of planting depth and mulching on growth and yield components of autumn potato crop sown at different dates

Ilyas¹

2017

PAB

View full text Add to dashboard Cite

Field experiments were carried out to study the role of various planting depths i.e. 10, 15 and 20 cm along with mulching on growth and yield attributes of autumn potato crop sown at different dates 15 and 29) at Horticulture Research Farm, The University of Agriculture Peshawar, during 2014-15 and 2015-16. The experiment was laid out in Randomized Complete Block Design (RCBD) with split plot arrangement. Sowing dates were kept in main plot, while planting depth and mulching were in sub plot. The two years average results revealed that sowing dates, planting depth, mulch treatments and their interactions have significant effects on potato growth and yield parameters. Potato crop sown earlier on October 01 showed maximum plant height (50.4 cm), number of leaves plant -1 (33) and marketable tuber yield (16.2 t ha -1 ). Regarding planting depths, tuber planted at a depth of 15 cm produced maximum emergence (86 %), plant height (45.5 cm), number of leaves plant -1 (32) and marketable tuber yield (13.8 t ha -1 ) as compared to tubers planted at a depth of 10 and 20 cm. Mulching resulted in maximum emergence (83 %), plant height (42.6 cm), number of leaves plant -1 (30) and marketable tuber yield (13.6 t ha -1 ) as compared to no mulching. The interaction effect of sowing dates, planting depth and mulching significantly affected all the growth and yield parameters. Therefore, it can be concluded from the results that early sowing of potato crop on October 01 at a depth of 15 cm with organic mulching resulted in better growth and yield of autumn potato crop under the climatic condition of Peshawar, Khyber Pakhtunkhwa, Pakistan.

show abstract

Heat Tolerance and Assimilate Transport in Different Potato Genotypes

Cited by 57 publications

References 25 publications

Effect of High Temperature on Plant Growth and Carbohydrate Metabolism in Potato

Effect of High Temperature on Plant Growth and Carbohydrate Metabolism in Potato

Introduction of the carrot HSP17.7 into potato (Solanum tuberosum L.) enhances cellular membrane stability and tuberization in vitro

Role of planting depth and mulching on growth and yield components of autumn potato crop sown at different dates

Contact Info

Product

Resources

About