Pedigree analysis of the origin of manganese tolerance in Canadian spring wheat (Triticum aestivum L.) cultivars

Moroni, J. Sergio; Briggs, K. G.; Taylor, Gregory J.

doi:10.1007/bf00042053

Cited by 16 publications

(14 citation statements)

References 17 publications

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“…1) under temperature-controlled conditions. The selected concentration (750 lM Mn) was higher than previously used for wheat (500 lM Mn) by Moroni et al (1991), probably due to a different experimental set-up. Also, Moroni et al (1991) used only root and shoot growth to determine severity of Mn toxicity compared with our study in which toxicity symptoms and shoot Mn concentration and content were also taken into consideration.…”

Section: Development Of a Screening Techniquementioning

confidence: 95%

“…1) were surface-sterilised using 0.5% (v/v) sodium hypochlorite and placed on wet filter papers in the dark at 4°C for 48 h. Seeds were then positioned with their crease down on a nylon mesh lined on a floating tray over 10 L of nutrient solution and grown initially for 7 d. The aerated standard nutrient solution (Moroni et al, 1991) contained (lM): Ca 1000; Mg 300; K 800; NO 3 3300-3600; NH 4 600; PO 4 100; SO 4 101; Cl 34; Na 20; Fe (as Fe-EDTA prepared from equimolar amounts of FeCl 3 and Na 2 EDTA) 10; B 6; Mn 2; Zn 0.5; Cu 0.15, and Mo 0.01. The pH was adjusted to 4.8 using 1 M HCl and 1 M NaOH as appropriate.…”

Section: Development Of a Screening Techniquementioning

confidence: 99%

“…Variation of Mn tolerance has been reported within Brazilian (Camargo, 1988), American (Foy et al, 1988), and Canadian wheat varieties (Moroni et al, 1991) as well as in seven Australian wheat varieties in a pot assay (Scott et al, 1998). Clearly, evaluation of a wider range of Australian locally adapted wheat germplasm is needed to assess potential presence of sufficient variation of Mn tolerance to justify the breeding efforts.…”

Section: Introductionmentioning

confidence: 96%

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Variation of tolerance to manganese toxicity in Australian hexaploid wheat

Khabaz‐Saberi

Rengel

Wilson

et al. 2010

Z. Pflanzenernähr. Bodenk.

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High concentrations of manganese (Mn), iron (Fe), and aluminium (Al) induced in waterlogged acid soils are a potential constraint for growing sensitive wheat cultivars in waterlogged-prone areas of Western Australian wheat-belt. Tackling induced ion toxicities by a genetic approach requires a good understanding of the existing variability in ion toxicity tolerance of the current wheat germplasm. A bioassay for tolerance to high concentration of Mn in wheat was developed using Norquay (Mn-tolerant), Columbus (Mn-intolerant), and Cascades (moderately tolerant) as control genotypes and a range of MnCl 2 concentrations (2, 250, 500, 750, 1000, 2000, and 3000 lM Mn) at pH 4.8 in a nutrient solution. Increasing solution Mn concentration decreased shoot and root dry weight and intensified the development of toxicity symptoms more in the Mnintolerant cv. Columbus than in Norquay and Cascades. The genotypic discrimination based on relative shoot (54% to 79%) and root dry weight (17% to 76%), the development of toxicity symptoms (scores 2 to 4) and the shoot Mn concentration (1428 to 2960 mg kg -1 ) was most pronounced at 750 lM Mn. Using this concentration to screen 60 Australian and 6 wheat genotypes from other sources, a wide variation in relative root dry weight (11% to 95%), relative shoot dry weight (31% to 91%), toxicity symptoms (1.5 to 4.5), and shoot Mn concentration (901 to 2695 mg kg -1 ) were observed. Evidence suggests that Mn tolerance has been introduced into Australian wheat through CIMMYT germplasm having "LERMO-ROJO" within their parentage, preserved either through a co-tolerance to Mn deficiency or a process of passive selection for Mn tolerance. Cultivars Westonia and Krichauff expressed a high level of tolerance to both Mn toxicity and deficiency, whereas Trident and Janz (reputed to be tolerant to Mn deficiency) were intolerant to Mn toxicity, suggesting that tolerance to excess and shortage of Mn are different, but not mutually exclusive traits. The co-tolerance for Mn and Al in ET8 (an Al-tolerant nearisogenic line) and the absence of Mn tolerance in BH1146 (an Al-tolerant genotype from Brazil) limits the effectiveness of these indicator genotypes to environments where only one constraint is induced. Wide variation of Mn tolerance in Australian wheat cultivars will enable breeding genotypes for the genetic solution to the Mn toxicity problem.

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Section: Development Of a Screening Techniquementioning

confidence: 95%

Section: Development Of a Screening Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

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Variation of tolerance to manganese toxicity in Australian hexaploid wheat

Khabaz‐Saberi

Rengel

Wilson

et al. 2010

Z. Pflanzenernähr. Bodenk.

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“…Based upon its pedigree (cv PT741 = Toropi//Ciano " S / Noroeste 66/3/Bluebird/Ciano " S /4/Grajo " S ; cv Katepwa = Neepawa*6/RL2938/3/Neepawa*6/ 1 CI815421 2*Frocor; Moroni et al, 1991), AI tolerance in cv PT741 could arise from the Brazilian cv Frontana. In addition to these cultivars, a population segregating for AI resistance was prepared by selfing single F, plants arising from a cross between cvs PT741 and Katepwa.…”

Section: Materials a N D Methodsmentioning

confidence: 99%

Al-Induced, 51-Kilodalton, Membrane-Bound Proteins Are Associated with Resistance to Al in a Segregating Population of Wheat

Taylor

Basu

et al. 1997

Plant Physiology

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~~ lncorporation of 35S into protein i s reduced by exposure t o AI i n wheat (Trificum aestivum), but the effects are genotype-specific.Exposure to 10 t o 75 p~ AI had little effect on 35S incorporation into total protein, nuclear and mitochondrial protein, microsomal protein, and cytosolic protein in the AI-resistant cultivar PT741. I n contrast, 10 p~ AI reduced incorporation by 21 t o 38% i n the AI-sensitive cultivar Katepwa, with effects becoming more pronounced (31-6270) as concentrations of AI increased. We previously reported that a pair of 51 -kD membrane-bound proteins accumulated i n root tips of PT741 under conditions of AI stress.We now report that the 51-kD band is labeled with 35S after 24 h of exposure t o 75 p~ AI. The specific induction of the 51-kD band i n PT741 suggested a potential role of one or both of these proteins i n mediating resistance t o AI. Therefore, we analyzed their expression in single plants from an F, population arising from a cross between the PT741 and Katepwa cultivars. Accumulation of 1,3-/3-glucans (callose) i n root tips after 24 h of exposure t o 1 O0 p~ AI indicated that this population segregated for AI resistance i n about a 3:l ratio. A close correlation between resistance t o AI (low callose content of root tips) and accumulation of the 51-kD band was observed, indicating that at least one of these proteins cosegregates with the AI-resistance phenotype. As a first step i n identifying a possible function, we have demonstrated that the 51-kD band i s most clearly associated with the tonoplast. Whereas AI has been reported to stimulate the activity of the tonoplast H+-ATPase and H+-PPase, antibodies raised against these proteins did not cross-react with the 51-kD band. Efforts are now under way t o purify this protein from tonoplast-enriched fractions.

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“…Only four hard wheat varieties, all developed in Quebec contained the Pinb-D1c allele. Opal, an introduction from West Germany (Moroni et al 1991), is in the pedigrees of two sister varieties (AC Mimi and AC Pollet) and Laval19, and thus is the likely source of the Pinb-D1c allele in those varieties. The pedigree of AC Voyageur (Columbus/unknown) is unclear, but it likely derived its mutant Pinb-D1c allele from a northern European source as this allele frequently occurs in this germplasm (Lillemo and Morris 2000).…”

Section: Discussionmentioning

confidence: 99%

Puroindoline allele diversity in Canadian and northern US hard spring wheat varieties differing in kernel hardness

Matus‐Cádiz¹,

Pozniak²,

Hucl³

2008

Can. J. Plant Sci.

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Matus-Ca´diz, M. A., Pozniak, C. J. and Hucl, P. J. 2008. Puroindoline allele diversity in Canadian and northern US hard spring wheat varieties differing in kernel hardness. Can. J. Plant Sci. 88: 873Á883. Kernel hardness, one of the most important factors in determining the end-use suitability of wheat (Triticum aestivum L.), is largely influenced by puroindoline proteins a (PINA) and b (PINB). Soft texture is wildtype (Pina-D1a/Pinb-D1a) with hard texture being determined by either Pina-D1 gene deletion or point mutations in Pinb-D1a. The objectives of this study were to determine kernel hardness indices (HI) and Pina-D1/Pinb-D1 allelic diversity in a diverse set of 81 Canadian (representing eight wheat classes) and 49 US hard spring wheat varieties. Varieties were grouped into two experimental sets grown in replicated trials in 2004Á2006 at Saskatoon, SK. Variation existed among varieties with HI means ranging from 21.7 (CDC Zorba) to 72.7 (AC Morse) in exp. 1 and from 25.0 (HY320) to 66.1 (Norlander) in exp. 2. Only AC Andrew, CDC Zorba, and Red Fife were soft kernel textured and carried the wildtype Pina-D1a/Pinb-D1a alleles. The majority of Canadian varieties were Pina-D1a/Pinb-D1b (69%), while a greater frequency of US varieties was Pina-D1b/Pinb-D1a (55%). Only four varieties, all from Quebec-based breeding programs, carried the Pinb-D1c allele. On average, varieties with the Pina-D1b allele had significantly harder kernels than those carrying the Pinb-D1b mutation. Durum wheat (T. turgidum L. var durum) varieties, included as hard-kernelled controls, possessed significantly harder kernels (average HI 071.2) than spring wheat varieties with Pina-D1b (65.3). Varieties carrying Pina-D1b (null PINA) were harder than those carrying hardness mutations at the Pinb-D1 locus, but considerable overlap in hardness was evident among genotypic classes. This work represents the first extensive Pin genotyping combined with HI phenotyping survey of Canadian wheat varieties, which is expected to aid breeders in understanding how Pina-D1/Pinb-D1 allele composition is currently associated with kernel hardness across Canadian wheat classes.

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Pedigree analysis of the origin of manganese tolerance in Canadian spring wheat (Triticum aestivum L.) cultivars

Cited by 16 publications

References 17 publications

Variation of tolerance to manganese toxicity in Australian hexaploid wheat

Variation of tolerance to manganese toxicity in Australian hexaploid wheat

Al-Induced, 51-Kilodalton, Membrane-Bound Proteins Are Associated with Resistance to Al in a Segregating Population of Wheat

Puroindoline allele diversity in Canadian and northern US hard spring wheat varieties differing in kernel hardness

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