Development and characterization of an adapted form ofdroopy, a diploid potato mutant deficient in abscisic acid

Jong, H. De; Kawchuk, L. M.; Coleman, Warren K.; Verhaeghe, Catherine; Russell, L. F.; Burns, V. J.; Tremblay-Deveau, E.

doi:10.1007/bf02875693

Cited by 9 publications

(4 citation statements)

References 34 publications

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“…This suggests that there might be a female by male genotype interaction or that there is a cytoplasmic component to resistance. Reciprocal cross differences have been reported for other traits in potato (DeJong et al, 2001, Sanford & Hanneman 1979. However, the significance of the reciprocal difference in this study is not known.…”

Section: Discussioncontrasting

confidence: 57%

Transmission of Verticillium wilt resistance to tetraploid potato via unilateral sexual polyploidization

2006

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Verticillium wilt is a serious disease of potato and is caused by the soil-borne fungi Verticillium dahliae and V. albo-atrum. No major cultivar is resistant to this disease. Two diploid interspecific potato clones, C287 and C545, were previously identified with consistently high levels of Verticillium wilt resistance and are thought to have the same genotype for the loci that confer resistance to V. dahliae stem colonization. The purpose of this study was to determine whether resistance to V. dahliae stem colonization could be transferred to the tetraploid level in potato via unilateral sexual polyploidization (USP). Progenies in eight families obtained by crossing C287 and C545 to two tetraploid breeding clones, S438 and S440, and the cultivar 'Atlantic' were planted in a V. dahliae-infested field and a field without a significant V. dahliae infestation. Resistance was evaluated relative to C545 and C287. There were differences among families for stem colonization and yield. No differences between the mean stem colonization of C545 and C287 progeny were detected. Family differences due to the tetraploid parents indicate that they contributed resistance to the progeny. Stem colonization data from this experiment were consistent with the proposed complementary two-gene model for Verticillium wilt resistance in the diploid parents. Unilateral sexual polyploidization is an effective method for transferring V. dahliae stem colonization resistance to the tetraploid level.

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Section: Discussioncontrasting

confidence: 57%

Transmission of Verticillium wilt resistance to tetraploid potato via unilateral sexual polyploidization

2006

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“…This trait is determined by a single recessive gene, dr (droopy). The dr alleles in clone 9120-05 can be traced back to a complex hybrid of cultivated diploids (including S. phureja and S. tuberosum; De Jong et al 2001). Clone 9120-18 is an ABA-normal sibling (Drdr) of clone 9120-05.…”

Section: Genetic Background Of Genotypes Testedmentioning

confidence: 99%

“…Clone 9506-04 is known to be salt tolerant (Zhang and Donnelly 1997). The ABAdeficient clone 9120-05 was expected to be salt sensitive (De Jong et al 2001), while its ABA-normal sibling (9120-18) was included as a putative intermediate type.…”

Section: Salinity Treatmentsmentioning

confidence: 99%

Methodologies and Traits for Evaluating the Salt Tolerance in Diploid Potato Clones

et al. 2008

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Efforts to incorporate the salt stress tolerance expressed by certain wild diploid potato species into improvement programs for cultivated tetraploid potatoes are hampered by a lack of quick, efficient and representative salt stress tolerance screening methods capable of evaluating diverse potato genotypes. This study developed screening methods and evaluated phenotypic and physiological responses as indicators of salt tolerance in diploid potato clones (Solanum tuberosum L. x wild relatives) utilizing a hydroponic sand-based system. When diploid clones known to vary in their salt tolerance were treated at tuber initiation with salinities ranging from 0 to 300 mM NaCl for 30 days, treatment with 100-150 mM NaCl allowed for rapid differentiation between salt tolerant and sensitive clones. Differences in relative salt tolerance were more clearly illustrated by changes in shoot growth and water content than by changes in shoot or root dry weights. Salt tolerances of 22 diploid potato clones were then evaluated by exposure to 100 to 150 mM NaCl stress for 28 days beginning at tuber initiation. Cluster analysis was used to segregate the clones into discrete groups based on the relative similarity of their responses to salt stress. Eight clones were subsequently selected to reflect a range in salinity tolerance and maturity. The eight clones were exposed to salinity stress for the reduced stress period of 7 days and then grown through to maturity. The 7 days stress period still allowed differentiation of tolerant versus sensitive clones. Growth index in both the 30 and 7 days salt stress trials was a good predictor of absolute tuber yield but not tuber yield tolerance to salt stress (tuber yield under stress/tuber yield under non-stress conditions). Tuber yield tolerance to salt stress was positively correlated with time to maturity. When the genotypes were ranked based on cluster analysis of a range of readily measured phenotypic and physiological responses to salt stress, the ranking was effective at predicting the relative impact of a salt stress event on tuber yield at maturity. While growth index may be a useful initial rapid selection tool, maturity and cluster analysis based on readily measured phenotypic characteristics were more effective in predicting relative yield tolerance to salt stress than individual phenotypic or physiological responses.Resumen Los esfuerzos para incorporar tolerancia a las sales expresadas por ciertas especies diplodes de papa silvestre en los programas de mejoramiento para papa cultivada tetraploide se ven obstaculizados por falta de métodos rápidos, eficientes y representativos de tamizado para tolerancia a las sales, capaces de evaluar diversos genotipos de papa. El presente estudio desarrolló métodos de tamizado y evaluó las respuestas fisiológicas como indicadoras de la tolerancia a las sales en clones diploides de papa (Solanum tuberosum L. x parientes silvestres), utilizando un sistema hidropónico basado en arena. Cuando los clones diploides conocidos por su toleranci...

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“…There is growing research interest for CK physiology in potato (Solanum tuberosum L.) due to numerous evidence for the involvement of CKs in the commercially important process of tuberisation [18][19][20][21][22][23] . A number of reports containing measurements of phytohormones in various tissues of potato plants grown in various conditions (in vitro, greenhouse) have been published so far 22,[24][25][26][27][28][29][30][31][32][33] . Data on amounts of particular molecular forms of isoprenoid CKs, as well as the auxin indole-3-acetic acid (IAA), and abscisic acid (ABA), measured in control plants in these studies, are summarised in Table 1.…”

mentioning

confidence: 99%

Endogenous levels of cytokinins, indole-3-acetic acid and abscisic acid in in vitro grown potato: A contribution to potato hormonomics

Raspor

Motyka

Ninković

et al. 2020

Sci Rep

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A number of scientific reports published to date contain data on endogenous levels of various phytohormones in potato (Solanum tuberosum L.) but a complete cytokinin profile of potato tissues, that would include data on all particular molecular forms of cytokinin, has still been missing. In this work, endogenous levels of all analytically detectable isoprenoid cytokinins, as well as the auxin indole-3-acetic acid (IAA), and abscisic acid (ABA) have been determined in shoots and roots of 30 day old in vitro grown potato (cv. Désirée). The results presented here are generally similar to other data reported for in vitro grown potato plants, whereas greenhouse-grown plants typically contain lower levels of ABA, possibly indicating that in vitro grown potato is exposed to chronic stress. Cytokinin N-glucosides, particularly N7-glucosides, are the dominant cytokinin forms in both shoots and roots of potato, whereas nucleobases, as the bioactive forms of cytokinins, comprise a low proportion of cytokinin levels in tissues of potato. Differences in phytohormone composition between shoots and roots of potato suggest specific patterns of transport and/or differences in tissue-specific metabolism of plant hormones. These results represent a contribution to understanding the hormonomics of potato, a crop species of extraordinary economic importance. Plant hormones, also called phytohormones, are major factors controlling plant growth and development. They are divided into several classes based on chemical structure and biological roles. Major phytohormone classes include cytokinins, auxins, abscisic acid, gibberellins, ethylene, brassinosteroids, jasmonates, salicylic acid and strigolactones 1,2. Cytokinins (CKs) are a group of plant hormones with a wide spectrum of biological roles. Natural CKs share the structure of N 6-substituted adenine, whereby the nature of the N 6-substituent defines them as either isoprenoid or aromatic 3. The adenine-like structure of CKs and their biosynthetic dependence on adenine metabolism suggest their close physiological connection to the processes including growth and cell division, in which the actively dividing cells produce large amounts of nucleobases and ribosides, including adenine and adenosine, for de novo synthesis of DNA. In isoprenoid CKs, the N 6-atom of adenine is substituted with an isoprenoid (C 5) chain derived from dimethylallyl diphosphate. This CK class is the most widespread, and consists of N 6-(Δ 2-isopentenyl)adenine (iP),

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Development and characterization of an adapted form ofdroopy, a diploid potato mutant deficient in abscisic acid

Cited by 9 publications

References 34 publications

Transmission of Verticillium wilt resistance to tetraploid potato via unilateral sexual polyploidization

Transmission of Verticillium wilt resistance to tetraploid potato via unilateral sexual polyploidization

Methodologies and Traits for Evaluating the Salt Tolerance in Diploid Potato Clones

Endogenous levels of cytokinins, indole-3-acetic acid and abscisic acid in in vitro grown potato: A contribution to potato hormonomics

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