Identification of quantitative trait loci (QTLs) associated with maintenance of wheat (Triticum aestivum Desf.) quality characteristics under heat stress conditions

Beecher, Francis; Mason, Esten; Mondal, Suchismita; Awika, Joseph M.; Hays, Dirk B.; Ibrahim, Amir M. H.

doi:10.1007/s10681-012-0687-z

Cited by 16 publications

(6 citation statements)

References 22 publications

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“…Consistent with this, exposure to heat late in grain filling (in field experiments or applied at 25 days after anthesis) has been reported to reduce % UPP and dough mixing time and strength (Irmak et al 2008;Cavanagh et al 2010). In contrast, earlier heat treatments (applied at 10 or 12 days after anthesis) have been reported to increase % UPP (Balla et al 2011) and increase SDS sedimentation height : volume ratio (another indicator of glutenin polymerisation and dough strength) (Beecher et al 2012). In the experiment conducted here, plants were exposed to heat early in grain filling (15 days after anthesis) and for only 3 days.…”

Section: Discussionmentioning

confidence: 70%

Post-anthesis heat and a Gpc-B1 introgression have similar but non-additive effects in bread wheat

Maphosa¹,

Collins²,

Taylor³

et al. 2014

Functional Plant Biol.

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Abstract. High temperatures during grain filling can reduce the yield of wheat and affect its grain protein concentration. The Gpc-B1 locus of wheat also affects grain protein concentration, but it is not known whether its effects interact with those of heat. The aim of this study was to investigate the effects of high temperature in lines with and without functional (high-protein) alleles at Gpc-B1. A highly replicated experiment was conducted in a glasshouse under control conditions (24/18 C, 14/10 h day/night), with half of the plants of each line or cultivar put into a heat chamber (37/27 C, 14/10 h day/ night) at 15 days after anthesis for 3 days. Backcross derivatives with the Gpc-B1 introgression segment differed from their recurrent parents more than those without that segment. In some respects, the effects of the Gpc-B1 introgression were similar to those of the heat treatment: both could accelerate peduncle senescence, increase grain protein content and increase the percentage of unextractable polymeric protein. Unlike the heat treatment, Gpc-B1 did not reduce grain weight, indicating that factors that hasten senescence do not necessarily limit grain size. The presence of the Gpc-B1 segment did not exacerbate the effects of heat stress on any trait.

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Section: Discussionmentioning

confidence: 70%

Post-anthesis heat and a Gpc-B1 introgression have similar but non-additive effects in bread wheat

Maphosa¹,

Collins²,

Taylor³

et al. 2014

Functional Plant Biol.

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“…The populations involved in these 28 studies included 13 RIL populations, 6 DH populations, 5 F 2 /backcross populations, and one family-based population (rarely same population was used in more than one study). The population size in different interval mapping studies varied from 64 (Mason et al 2010) to 420 (Sharma et al 2017) and the number of QTLs reported in individual studies ranged from 2 (Beecher et al 2012) to 118 QTLs (Shirdelmoghanloo et al 2016) (Fig. 1a).…”

Section: Qtls Associated With Thermotolerancementioning

confidence: 99%

Meta-QTLs, ortho-MQTLs and candidate genes for thermotolerance in wheat (Triticum aestivum L.)

Kumar

Singh

Saini

et al. 2021

Preprint

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Meta-QTL analysis for thermotolerance in wheat was conducted to identify robust meta-QTLs (MQTLs). In this study, 441 QTLs related to 31 heat-responsive traits were projected on the consensus map saturated with 50,310 markers. This exercise resulted in the identification of 85 MQTLs with confidence interval (CI) ranging from 0.11 to 34.9 cM with an average of 5.6 cM. This amounted to a 2.96 fold reduction relative to the mean CI (16.5 cM) of the QTLs used. Seventy-seven (77) of these MQTLs were also verified with the results of recent genome-wide association studies (GWAS). These MQTLs included seven MQTLs that are particularly useful for breeding purposes (we called them Breeders’ MQTLs). Seven ortho-MQTLs between wheat and rice genomes were also identified using synteny and collinearity. The MQTLs were used for the identification of 1,704 candidate genes (CGs). In silico expression analysis of these CGs permitted identification of 182 differentially expressed genes (DEGs), which included 36 high-confidence candidate genes (CGs) with known functions previously reported to be important for thermotolerance. These high confidence CGs encoded proteins belonging to the following families: protein kinase, WD40 repeat, glycosyltransferase, ribosomal protein, SNARE associated Golgi protein, GDSL lipase/esterase, SANT/Myb domain, K homology domain, etc. Thus, the present study resulted in the identification of MQTLs (including breeders’ MQTLs), ortho-MQTLs, and underlying CGs, which could prove useful not only for molecular breeding for the development of thermotolerant wheat cultivars but also for future studies focused on understanding the molecular basis of thermotolerance.

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“…An elaborative list of QTLs associated with HT in various crops along with details of mapping populations used, number of QTLs identified, associated markers, chromosomal positions, and phenotypic variation explained (PVE) has been summarized by Jha et al [146]. Several major or minor QTLs and linked markers for HT have been identified in major food crops such as rice [90,[147][148][149], wheat [143,144,[150][151][152], and maize [153,154]. QTLs for several HT-related traits have been identified such as cellular membrane stability, pollen germination, and pollen tube growth in maize [153,154]; stay-green trait, photosynthetic genes, and HSPs in sorghum [155]; and pollen viability in adzuki bean [156].…”

Section: Molecular Markers In Breeding For Htmentioning

confidence: 99%

Breeding Cultivars for Heat Stress Tolerance in Staple Food Crops

Govindaraj¹,

Pattanashetti²,

Patne³

et al. 2018

Next Generation Plant Breeding

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Food and nutritional security will be worsened by climate change-induced high temperatures, droughts and reduced water availability in most agricultural food crops environments, particularly in developing countries. Recent evidences indicate that countries in the southern hemisphere are more vulnerable to food production due to greater frequency of extreme weather events. These challenges can be addressed by: (i) adoption of climate mitigation tools in agricultural and urban activities; (ii) development of heat and drought tolerant cultivars in major food crops; (iii) bringing back forgotten native minor food crops such as millets and root crops; and (iv) continued investment in agricultural research and development with the strong government policy support on native crops grown by small holder farmers. The native crops have inherent potential and traits to cope with adverse climate during the course of its evolution process. Therefore, diversifying the crops should be a prime framework of the climate-smart agriculture to meet the global food and nutritional security for which policy-driven production changes are highly required in developing countries. The adverse effects of climate change on agricultural production need to be addressed by multidisciplinary team and approaches through strong network of research consortium including private sectors and multinational governments for global impact.

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Identification of quantitative trait loci (QTLs) associated with maintenance of wheat (Triticum aestivum Desf.) quality characteristics under heat stress conditions

Cited by 16 publications

References 22 publications

Post-anthesis heat and a Gpc-B1 introgression have similar but non-additive effects in bread wheat

Post-anthesis heat and a Gpc-B1 introgression have similar but non-additive effects in bread wheat

Meta-QTLs, ortho-MQTLs and candidate genes for thermotolerance in wheat (Triticum aestivum L.)

Breeding Cultivars for Heat Stress Tolerance in Staple Food Crops

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