Potato Rest

Hemberg, Torsten

doi:10.1016/b978-0-12-447660-8.50016-8

Cited by 41 publications

(33 citation statements)

References 65 publications

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“…GAs, cytokinins, and even polyamines may well be involved, but ABA has received special attention as a part of the p-complex of inhibitors (Holst, 1971;Hemberg, 1985). Coleman and King (1984) found a decline in tuber ABA levels in two of three cultivars at the end of dormancy but no evidence of a threshold level below which sprouting could not occur.…”

Section: Other Evidence On Aba and Tuber Dormancymentioning

confidence: 99%

Evidence from Polygene Mapping for a Causal Relationship between Potato Tuber Dormancy and Abscisic Acid Content

et al. 1997

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In previous studies polygene mapping of a backcross population derived from haploid potato (Solanum tuberosum) and a diploid wild species (Solanum berthaultiij showed at least eight quantitative trait loci (QTLs) associated with tuber dormancy. The same population was mapped for abscisic acid (ABA) content in tubers so that any QTLs identified could be compared with those detected previously. At least three distinct loci on three chromosomes (2, 4, and 7) were associated with variation in ABA content. One of the QTLs was detected only as a main (single locus) effect, and two QTLs were found through two-locus interaction analysis (epistasis). Interaction between QTLs at markers TG234 (chromosome 2) and TG755 (chromosome 4) explained 20% of total phenotypic variante for this trait. The interaction closely resembled one previously detected for dormancy, suggesting an association between high ABA content and long tuber dormancy. Although relationships between ABA leve1 and dormancy could be demonstrated through polygene mapping, there was no indication of a relationship between these traits when they were subjected to a conventional correlation test. This illustrates the usefulness of polygene mapping as a tool to identify possible associations between hormone levels and plant development.A well-tested approach for understanding growth and development is the analysis of differences between two phenotypes that contain different alleles of a single major gene. For example, analyses of dwarf and wild-type siblings have revealed hormonal differences associated with the mutant genotype (Reid and Howell, 1995). Although this approach has been productive, a limitation is that the control of many developmental processes is polygenic, i.e. inheritance is quantitative rather than qualitative. Thus, although it is interesting to know what physiological effect was produced by a dwarf mutation, it might be much more informative to learn about the physiological effects pro- duced by the polygenes that control plant height. In the past the study of quantitative inheritance was so difficult that it yielded only very generalized information, and little could be learned that would elucidate the physiology of growth and development. The situation has changed dramatically with the availability of new methods for mapping polygenes (Tanksley et al., 1989;Tanksley, 1993;Young, 1993). The new mapping methods rely on DNA-based genetic markers, such as RFLP markers. Through such mapping, a number of QTLs may be found that are associated with the control of a trait such as plant height. A QTL denotes a region of chromosome linked to the marker gene that has a significant effect on the quantitative trait (Tanksley, 1993).With the availability of this tool for mapping quantitative traits, polygenes can be used to study the physiology of growth and development in a manner analogous to, but more powerful than, the way single genes have been used in the past. Once the QTLs have been detected that are associated with the control of a given stage of...

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Section: Other Evidence On Aba and Tuber Dormancymentioning

confidence: 99%

Evidence from Polygene Mapping for a Causal Relationship between Potato Tuber Dormancy and Abscisic Acid Content

et al. 1997

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“…Exogenous application of high concentrations of indole-3 acetic acid (IAA) or 1-naphthaleneacetic acid resulted in an inhibition of sprout growth, while application of low doses of auxin to bud containing tuber slices had a growth stimulating effect (Hemberg 1949(Hemberg , 1985Suttle 2007). Inconsistent data have been also published concerning changes in endogenous levels of IAA.…”

Section: Hormonal Controlmentioning

confidence: 99%

Regulation of potato tuber sprouting

Sonnewald

2013

Planta

212

165

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“…Existing evidence for this theory is largely circumstantial and is based entirely on correlative and pharmacological evidence. Pioneering studies by Hemberg (1961Hemberg ( , 1985 using bioassays and acid extracts prepared from potato pendem and fractionated by paper chromatography led to the hypothesis that potato tuber dormancy was controlled by the levels of a complex mixture of substances collectively termed inhibitorp (Bennet-Clark and Kefford, 1953). As detected by bioassay, levels of inhibitor-P were highest in deeply dormant tubers and declined during storage in a manner roughly coincident with the gradual loss of tuber dormancy.…”

mentioning

confidence: 99%

“…Uncontrolled sprouting during storage is detrimental to the nutritional quality of potatoes and often results in exacerbated postharvest disease progression, both of which result in severe financia1 losses to producers. Potato tuber dormancy is thought to be regulated by endogenous hormones (Hemberg, 1985;van Es and Hartmans, 1987;Burton, 1989). Existing evidence for this theory is largely circumstantial and is based entirely on correlative and pharmacological evidence.…”

mentioning

confidence: 99%

Role of Endogenous Abscisic Acid in Potato Microtuber Dormancy

Suttle

Hultstrand

1994

Plant Physiol.

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Potato (Solanum tuberosum L. cv Russet Burbank) microtubers generated in vitro from single-node explants contained substantial amounts (approximately 250 pmol/g fresh weight) of free abscisic acid (ABA) and were completely dormant for a minimum of 12 weeks. Microtubers that developed in the presence of 10 NM fluridone (FLD) contained considerably reduced amounts (approximately 5-25 pmol/g fresh weight) of free ABA and exhibited a precocious loss of dormancy. lnclusion of exogenous racemic ABA in the FLD-containing medium suppressed the premature sprouting of these microtubers in a dose-dependent manner. At a concentration of 50 p~, exogenous ABA restored internal ABA levels to control values and completely inhibited FLD-induced precocious sprouting. Exogenous jasmonic acid was ineffective in suppressing FLD-induced sprouting. Application of FLD to preformed, fully dormant microtubers also resulted in a reduction in internal ABA content and precocious sprouting. These results indicate that endogenous ABA is essential for the induction and maintenance of potato microtuber dormancy.

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Potato Rest

Cited by 41 publications

References 65 publications

Evidence from Polygene Mapping for a Causal Relationship between Potato Tuber Dormancy and Abscisic Acid Content

Evidence from Polygene Mapping for a Causal Relationship between Potato Tuber Dormancy and Abscisic Acid Content

Regulation of potato tuber sprouting

Role of Endogenous Abscisic Acid in Potato Microtuber Dormancy

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