Capturing candidate drought tolerance traits in two native Andean potato clones by transcription profiling of field grown plants under water stress

Schafleitner, Roland; Gutierrez, Raymundo; Gaudin, Amélie C. M.; Aliaga, Carlos Alberto Alvarado; Martinez, Giannina Nomberto; Marca, Luz Rosalina Tincopa; Bolivar, Luis Avila; Delgado, Felipe Mendiburu; Simon, Reinhard; Bonierbale, Merideth

doi:10.1016/j.plaphy.2007.06.003

Cited by 115 publications

(109 citation statements)

References 52 publications

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“…Similarly, harvest index of potato was reduced by terminal drought stress from 0.35 to 0.30 (Schafleitner et al, 2007). It is our general understanding that drought reduces growth and yield component traits in most crops species.…”

Section: Discussionmentioning

confidence: 92%

“…In temperate regions, drought stress reduced Jerusalem artichoke tuber yield by 20% (Conde et al, 1991;Losavio et al, 1997) but increased water use efficiency by 7-35% and harvest index by 21% (Conde et al, 1991). In potato, terminal drought slightly reduced harvest index by 17% (Schafleitner et al, 2007). In tropical regions, drought stress with heat stress can cause tuber yield loss of 29% and biomass loss of 53%, however, some Jerusalem artichoke varieties can sustain yield to some extent under drought (Ruttanaprasert et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Effects of water stress on total biomass, tuber yield, harvest index and water use efficiency in Jerusalem artichoke

Ruttanaprasert

Jogloy

Vorasoot

et al. 2016

Agricultural Water Management

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The objectives of this study were to determine the effects of drought on tuber yield, total biomass, harvest index, water use efficiency of tuber yield (WUEt) and water use efficiency of biomass (WUEb), and to evaluate the differential responses of Jerusalem artichoke ( JA) varieties under drought stress. The 3 × 5 factorial combinations of three water regimes (Field capacity (FC), 50% available soil water (50%AW) and 25%AW), and five JA varieties ( JA 60, JA 125, JA 5, JA 89 and HEL 65) were arranged in a pot experiment in a randomized complete block design with four replications for two years. Data were recorded for tuber dry weight, total biomass, harvest index, WUEt and WUEb at harvest. Drought reduced tuber dry weight, total biomass, harvest index, WUEt and WUEb, and reductions were more severe under the severe drought stress of 25%AW. Varieties were significantly different for all traits under drought and well-watered conditions. The JA varieties were classified into three groups. The first category was comprised of the JA 5 variety with high tuber yield potential and low drought tolerance, the second category consisted of JA 60 and JA 125 varieties with low tuber yield potential and high drought tolerance, and the third group included JA 89 and HEL 65 varieties with low tuber yield potential and low drought tolerance. The multiple regression analysis showed that tuber yield, total biomass and harvest index at 50%AW and 25%AW depended largely on the reductions of tuber yield, total biomass and harvest index under drought. Therefore, the results of this study recommend that the selection of JA genotypes with low reduction in yield under drought stress could be a criterion in drought resistance breeding programs for development of JA varieties with high tuber yield under drought stress. JA with drought tolerance in this study means high tuber yield under drought conditions. JA 5 had high yield and WUEt across water regimes and could be used as parental source for drought tolerance breeding programs in further research. The objectives of this study were to determine the effects of drought on tuber yield, total biomass, harvest index, water use efficiency of tuber yield (WUEt) and water use efficiency of biomass (WUEb), and to evaluate the differential responses of Jerusalem artichoke (JA) varieties under drought stress. The 3 × 5 factorial combinations of three water regimes (Field capacity (FC), 50% available soil water (50%AW) and 25%AW), and five JA varieties (JA 60, JA 125, JA 5, JA 89 and HEL 65) were arranged in a pot experiment in a randomized complete block design with four replications for two years. Data were recorded for tuber dry weight, total biomass, harvest index, WUEt and WUEb at harvest. Drought reduced tuber dry weight, total biomass, harvest index, WUEt and WUEb, and reductions were more severe under the severe drought stress of 25%AW. Varieties were significantly different for all traits under drought and well-watered conditions. The JA varieties were classified into three groups....

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Section: Discussionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Effects of water stress on total biomass, tuber yield, harvest index and water use efficiency in Jerusalem artichoke

Ruttanaprasert

Jogloy

Vorasoot

et al. 2016

Agricultural Water Management

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“…Leaf areas were measured with a Li-Cor 3100 area meter (Li-Cor, Lincoln, NE). Plant fresh and dry weights (oven-dried at 70°C for at least 72 h) were determined (Schafleitner et al 2007). Plant water content (PWC%) was estimated according to Guo et al (2008).…”

Section: Measurementsmentioning

confidence: 99%

In vitro screening of potato lines for drought tolerance

Al-Biski

Najla

Sanoubar

et al. 2012

Physiol Mol Biol Plants

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Fresh water resources are limited and their use in agricultural production is expected to come under increasing constraints. Eighteen Syrian lines of potato (Solanum tuberosum L.) were screened for drought tolerance by measuring aerial and root growth in vitro. Drought stress was evaluated by adding 2, 4, 6, 8 and 10 % (w:v) of sorbitol to MurashigeSkoog medium and compared to 0 % for the control. Water potential of media ranged from −0.58 MPa to −2.5 MPa. Water-stress in culture adversely affected plant growth, and genotypes differed for their responses. Plant length and stem thickness, leaf area, root number length and thickness, and plant fresh and dry weights and plant water content were measured and all decreased due to drought. Grouping lines by cluster analysis for response to drought resulted in: (1) a tolerant group of six lines, (2) a moderately tolerant group of seven lines, and (3) a susceptible group of five lines. The variation in germplasm indicated that potato varieties can be developed for production under some levels of drought.

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“…A drought response is mainly related to the synthesis of solutes needed for osmotic adjustment such as soluble sugars, proline, and glycine betaine. In potato, several studies have revealed the stress protecting role of the lipids in cell membranes (Palta 1994), the accumulation of several sugars and osmoprotectant substances Evers et al 2010), as well as genes and proteins for osmotic adjustment (Schafleitner et al 2007;Carvallo et al 2011;Pino et al 2013), and membrane stability and oxidative homeostasis (VasquezRobinet et al 2008;Folgado et al 2014).…”

Section: Discussionmentioning

confidence: 99%

“…Recently, the Andean cultivated potatoes and their wild relative S. commersonii were biochemically and molecularly studied to understand the physiological mechanisms linked to abiotic stress tolerance (Schafleitner et al 2007;Mane et al 2008;Vasquez-Robinet et al 2008;Pino et al 2013). Information from these studies is useful to improve potato cryopreservation methods.…”

Section: Introductionmentioning

confidence: 99%

Improved cryopreservation method for the long-term conservation of the world potato germplasm collection

Panta

Panis²,

Ynouye

et al. 2014

Plant Cell Tiss Organ Cult

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The effect of cold and sucrose pretreatment for increasing tolerance to cryopreservation was evaluated with eight diverse genotypes, six cultivars belonging to the cultivated species, Solanum tuberosum spp., S. tuberosum subsp. andigena, S. x juzepczukii and S. x ajanhuiri, and two genotypes from the wild species, S. commersonii. In vitro plantlets were cultured at either 6 or 22°C in media supplemented with either 0.07 or 0.3 M sucrose prior to droplet PVS2 cryopreservation. The sucrose pretreatment appeared to have no positive effect on post-cryo survival. The cold-hardening pretreatment increased significantly post-cryo recovery in drought and frost tolerant cultivars. When 755 accessions, representing 10 taxa, were cryopreserved after cold-hardening, 96 % responded with at least one shoot recovering and 63 % showed a high recovery rate (40-100 %). Therefore this method is recommended for the long term conservation of diverse accessions of potato germplasm.

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Capturing candidate drought tolerance traits in two native Andean potato clones by transcription profiling of field grown plants under water stress

Cited by 115 publications

References 52 publications

Effects of water stress on total biomass, tuber yield, harvest index and water use efficiency in Jerusalem artichoke

Effects of water stress on total biomass, tuber yield, harvest index and water use efficiency in Jerusalem artichoke

In vitro screening of potato lines for drought tolerance

Improved cryopreservation method for the long-term conservation of the world potato germplasm collection

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