Carbon partitioning mechanisms in POTATO under drought stress

Ernest B. Aliche, Tom P.J.M. Theeuwen, Marian Oortwijn, Richard G.F. Visser, Gerard van der Linden*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

Potato (Solanum tuberosum) is an important food crop consumed all over the world, but it is generally sensitive to drought conditions. One of the major physiological processes affected by drought stress is carbon partitioning: the plant's choice of where to allocate its photoassimilates. Our aim was to investigate the molecular factors and possible bottlenecks affecting carbon partitioning during drought. We studied potato cultivars with contrasting drought responses in the greenhouse in the years 2013–2015, and further investigated the expression of genes involved in carbon partitioning and metabolite levels. Our results indicate that one of the most severe effects of drought stress on potato is the arrest of stolon differentiation and formation of tubers. We also identified some physiological traits like stomatal conductance and chlorophyll content as affecting carbon assimilation, partitioning and eventual tuber yield. The gene expressions and biochemical analyses highlight the various tissues prioritized by the plant for assimilate transport during drought stress, and give indications of what distinguishes drought tolerance and sensitivity of cultivated potato. Some of the key genes studied (like Sucrose synthase and Sucrose transporters) may be inclusive breeding targets for drought tolerance in potato.

Original languageEnglish
Pages (from-to)211-219
Number of pages9
JournalPlant Physiology and Biochemistry
Volume146
DOIs
Publication statusPublished - 1 Jan 2020

Fingerprint

Droughts
water stress
Carbon
Solanum tuberosum
potatoes
carbon
drought
drought tolerance
tubers
gene expression
sucrose synthase
food crops
stomatal conductance
transporters
Physiological Phenomena
Gene Expression
sucrose
metabolites
greenhouses
chlorophyll

Keywords

  • Carbon partitioning
  • Drought
  • Gene expression
  • Potato
  • Sugar metabolism

Cite this

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title = "Carbon partitioning mechanisms in POTATO under drought stress",
abstract = "Potato (Solanum tuberosum) is an important food crop consumed all over the world, but it is generally sensitive to drought conditions. One of the major physiological processes affected by drought stress is carbon partitioning: the plant's choice of where to allocate its photoassimilates. Our aim was to investigate the molecular factors and possible bottlenecks affecting carbon partitioning during drought. We studied potato cultivars with contrasting drought responses in the greenhouse in the years 2013–2015, and further investigated the expression of genes involved in carbon partitioning and metabolite levels. Our results indicate that one of the most severe effects of drought stress on potato is the arrest of stolon differentiation and formation of tubers. We also identified some physiological traits like stomatal conductance and chlorophyll content as affecting carbon assimilation, partitioning and eventual tuber yield. The gene expressions and biochemical analyses highlight the various tissues prioritized by the plant for assimilate transport during drought stress, and give indications of what distinguishes drought tolerance and sensitivity of cultivated potato. Some of the key genes studied (like Sucrose synthase and Sucrose transporters) may be inclusive breeding targets for drought tolerance in potato.",
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author = "Aliche, {Ernest B.} and Theeuwen, {Tom P.J.M.} and Marian Oortwijn and Visser, {Richard G.F.} and {van der Linden}, Gerard",
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journal = "Plant Physiology and Biochemistry",
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Carbon partitioning mechanisms in POTATO under drought stress. / Aliche, Ernest B.; Theeuwen, Tom P.J.M.; Oortwijn, Marian; Visser, Richard G.F.; van der Linden, Gerard.

In: Plant Physiology and Biochemistry, Vol. 146, 01.01.2020, p. 211-219.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Carbon partitioning mechanisms in POTATO under drought stress

AU - Aliche, Ernest B.

AU - Theeuwen, Tom P.J.M.

AU - Oortwijn, Marian

AU - Visser, Richard G.F.

AU - van der Linden, Gerard

PY - 2020/1/1

Y1 - 2020/1/1

N2 - Potato (Solanum tuberosum) is an important food crop consumed all over the world, but it is generally sensitive to drought conditions. One of the major physiological processes affected by drought stress is carbon partitioning: the plant's choice of where to allocate its photoassimilates. Our aim was to investigate the molecular factors and possible bottlenecks affecting carbon partitioning during drought. We studied potato cultivars with contrasting drought responses in the greenhouse in the years 2013–2015, and further investigated the expression of genes involved in carbon partitioning and metabolite levels. Our results indicate that one of the most severe effects of drought stress on potato is the arrest of stolon differentiation and formation of tubers. We also identified some physiological traits like stomatal conductance and chlorophyll content as affecting carbon assimilation, partitioning and eventual tuber yield. The gene expressions and biochemical analyses highlight the various tissues prioritized by the plant for assimilate transport during drought stress, and give indications of what distinguishes drought tolerance and sensitivity of cultivated potato. Some of the key genes studied (like Sucrose synthase and Sucrose transporters) may be inclusive breeding targets for drought tolerance in potato.

AB - Potato (Solanum tuberosum) is an important food crop consumed all over the world, but it is generally sensitive to drought conditions. One of the major physiological processes affected by drought stress is carbon partitioning: the plant's choice of where to allocate its photoassimilates. Our aim was to investigate the molecular factors and possible bottlenecks affecting carbon partitioning during drought. We studied potato cultivars with contrasting drought responses in the greenhouse in the years 2013–2015, and further investigated the expression of genes involved in carbon partitioning and metabolite levels. Our results indicate that one of the most severe effects of drought stress on potato is the arrest of stolon differentiation and formation of tubers. We also identified some physiological traits like stomatal conductance and chlorophyll content as affecting carbon assimilation, partitioning and eventual tuber yield. The gene expressions and biochemical analyses highlight the various tissues prioritized by the plant for assimilate transport during drought stress, and give indications of what distinguishes drought tolerance and sensitivity of cultivated potato. Some of the key genes studied (like Sucrose synthase and Sucrose transporters) may be inclusive breeding targets for drought tolerance in potato.

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KW - Sugar metabolism

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