Introgression of genes from bread wheat enhances the aluminium tolerance of durum wheat

Han, Chang; Zhang, Peng; Ryan, Peter R.; Rathjen, Tina; Yan, Zehong; Delhaize, Emmanuel

doi:10.1007/s00122-015-2661-3

Cited by 40 publications

(52 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This allele shows lower repeat of blocks in the promoter and it is associated with lower TaALMT1 expression than alleles V and VI (Sasaki et al, 2006). This suggests that this result corroborates a recent report showing that the insertion in the TaMATE1B promoter is advantageous if it is associated with an inferior TaALMT1 allele but not with a superior TaALMT1 allele (Han et al, 2016).…”

Section: Discussionsupporting

confidence: 88%

Initial root length in wheat is highly correlated with acid soil tolerance in the field

Pereira

2018

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

ABSTRACT:In acid soils, toxic aluminum ions inhibit plant root growth. In order to discriminate aluminum (Al) tolerance, trustful screening techniques are required. In this study, 20 wheat cultivars, showing different levels of Al tolerance, were evaluated in a short-term soil experiment to access their relative root length (RRL). Moreover, the alleles of two important genes (TaALMT1 and TaMATE1B) for Al tolerance in wheat were discriminated. Both of these genes encode membrane transporters responsible for the efflux of organic acids by the root apices that are thought to confer tolerance by chelating Al. Genotypes showing TaALMT1 alleles V and VI and an insertion at the TaMATE1B promoter were among the ones showing greater RRL. Mechanisms of Al tolerance, which are not associated with organic acid efflux, can be potentially present in two cultivars showing greater RRL among the ones carrying inferior TaALMT1 and TaMATE1B alleles.The RRL data were highly correlated with wheat performance in acid soil at three developmental stages, tillering (r = -0.93, p < 0.001), silking (r = -0.91, p < 0.001) and maturation (r = -0.90, p < 0.001), as well as with the classification index of aluminum toxicity in the field (r = -0.92, p < 0.001). Since the RRL was obtained after only six days of growth and it is highly correlated with plant performance in acid soil under field conditions, the short-term experiment detailed here is an efficient and rapid method for reliable screening of wheat Al tolerance.

show abstract

Section: Discussionsupporting

confidence: 88%

Initial root length in wheat is highly correlated with acid soil tolerance in the field

Pereira

2018

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

show abstract

“…By exploiting high-resolution tools, this goal could be achieved in several instances, both in bread and also durum wheat (see several chapters in [11] and references therein; see also [15][16][17][18][19][20]). As to the latter species, successful examples not only include the transfer of genes for resistance to diseases [14,22,23] and abiotic stresses [24], but also grain quality [14,[25][26][27][28] and yield-related traits [29,30].…”

Section: Stacking Different Alien Segmentsmentioning

confidence: 99%

Harnessing Genetic Diversity of Wild Gene Pools to Enhance Wheat Crop Production and Sustainability: Challenges and Opportunities

et al. 2017

View full text Add to dashboard Cite

Wild species are extremely rich resources of useful genes not available in the cultivated gene pool. For species providing staple food to mankind, such as the cultivated Triticum species, including hexaploid bread wheat (Triticum aestivum, 6x) and tetraploid durum wheat (T. durum, 4x), widening the genetic base is a priority and primary target to cope with the many challenges that the crop has to face. These include recent climate changes, as well as actual and projected demographic growth, contrasting with reduction of arable land and water reserves. All of these environmental and societal modifications pose major constraints to the required production increase in the wheat crop. A sustainable approach to address this task implies resorting to non-conventional breeding strategies, such as "chromosome engineering". This is based on cytogenetic methodologies, which ultimately allow for the incorporation into wheat chromosomes of targeted, and ideally small, chromosomal segments from the genome of wild relatives, containing the gene(s) of interest. Chromosome engineering has been successfully applied to introduce into wheat genes/QTL for resistance to biotic and abiotic stresses, quality attributes, and even yield-related traits. In recent years, a substantial upsurge in effective alien gene exploitation for wheat improvement has come from modern technologies, including use of molecular markers, molecular cytogenetic techniques, and sequencing, which have greatly expanded our knowledge and ability to finely manipulate wheat and alien genomes. Examples will be provided of various types of stable introgressions, including pyramiding of different alien genes/QTL, into the background of bread and durum wheat genotypes, representing valuable materials for both species to respond to the needed novelty in current and future breeding programs. Challenging contexts, such as that inherent to the 4x nature of durum wheat when compared to 6x bread wheat, or created by presence of alien genes affecting segregation of wheat-alien recombinant chromosomes, will also be illustrated.

show abstract

“…Pentaploid wheat hybrids are a potential source for developing resistance to pests and diseases and for improving the level of tolerance to abiotic stresses such as salinity and metal toxicity (Munns et al, 1999; Lopes et al, 2010; Han et al, 2016). Improving quality characteristics is one of the primary concerns when developing commercial varieties suitable for human and animal consumption.…”

Section: Applications Of Pentaploid Wheat Hybridsmentioning

confidence: 99%

“…The size of the 4D chromosomes introgressed from the bread wheat into durum wheat was estimated by markers, fluorescence in situ hybridisation (FISH), and real time quantitative PCR. The TaALMT1 and TaMATE1B genes increased Al 3+ tolerance in durum wheat and, in contrast to bread wheat, the TaMATE1B gene was found to be more effective in increasing Al 3+ tolerance in durum wheat grown on acid soil (Han et al, 2016). …”

Section: Applications Of Pentaploid Wheat Hybridsmentioning

confidence: 99%

“…Developing wheat hybrids through alien introgression is highly challenging when compared to hybridisation between domesticated inter-ploidy species such as bread and durum wheat. Recently, there has been a renewed interest in developing hexaploid/tetraploid wheat crosses to improve elite bread and durum wheat lines for a number of economically desirable characters (Martin et al, 2011, 2013; Han et al, 2014, 2016; Kalous et al, 2015). …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Pentaploid Wheat Hybrids: Applications, Characterisation, and Challenges

et al. 2017

Self Cite

View full text Add to dashboard Cite

Interspecific hybridisation between hexaploid and tetraploid wheat species leads to the development of F1 pentaploid hybrids with unique chromosomal constitutions. Pentaploid hybrids derived from bread wheat (Triticum aestivum L.) and durum wheat (Triticum turgidum spp. durum Desf.) crosses can improve the genetic background of either parent by transferring traits of interest. The genetic variability derived from bread and durum wheat and transferred into pentaploid hybrids has the potential to improve disease resistance, abiotic tolerance, and grain quality, and to enhance agronomic characters. Nonetheless, pentaploid wheat hybrids have not been fully exploited in breeding programs aimed at improving crops. There are several potential barriers for efficient pentaploid wheat production, such as low pollen compatibility, poor seed set, failed seedling establishment, and frequent sterility in F1 hybrids. However, most of the barriers can be overcome by careful selection of the parental genotypes and by employing the higher ploidy level genotype as the maternal parent. In this review, we summarize the current research on pentaploid wheat hybrids and analyze the advantages and pitfalls of current methods used to assess pentaploid-derived lines. Furthermore, we discuss current and potential applications in commercial breeding programs and future directions for research into pentaploid wheat.

show abstract

Introgression of genes from bread wheat enhances the aluminium tolerance of durum wheat

Cited by 40 publications

References 39 publications

Initial root length in wheat is highly correlated with acid soil tolerance in the field

Initial root length in wheat is highly correlated with acid soil tolerance in the field

Harnessing Genetic Diversity of Wild Gene Pools to Enhance Wheat Crop Production and Sustainability: Challenges and Opportunities

Pentaploid Wheat Hybrids: Applications, Characterisation, and Challenges

Contact Info

Product

Resources

About