Tolerance of wheat to vegetative stage soil waterlogging is conditioned by both constitutive and adaptive QTL

Ballesteros, Diana Carolina Cabra; Mason, Richard E.; Addison, Christopher K.; Acuña, Manuel; Arguello, Maria N.; Subramanian, Nithya; Miller, R. G.; Sater, Haley; Gbur, Edward E.; Miller, David M.; Griffey, Carl A.; Barnett, M. D.; Tucker, David M.

doi:10.1007/s10681-014-1184-3

Cited by 36 publications

(27 citation statements)

References 42 publications

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“…The QTLs for TN on chromosome 7D, between Xbarc235 and Xgwm428, have not been reported elsewhere. The remaining QTLs for TN in SC and ITMI populations could be traced to the same chromosomal locations reported in previous studies (Ballesteros et al., ; Jia et al., ; Kuzmanović et al., ; Xu et al., ).…”

Section: Discussionsupporting

confidence: 77%

Analysis of contributors to grain yield in wheat at the individual quantitative trait locus level

Mao

Chen

et al. 2018

Plant Breeding

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In wheat, strong genetic correlations have been found between grain yield (GY) and tiller number per plant (TN), fertile spikelet number per spike (FSN), kernel number per spike (KN) and thousand‐kernel weight (TKW). To investigate their genetic relationships at the individual quantitative trait locus (QTL) level, we performed both normal and multivariate conditional QTL analysis based on two recombinant inbred lines (RILs) populations. A total of 79 and 48 normal QTLs were identified in the International Triticeae Mapping Initiative (ITMI)/SHW‐L1 × Chuanmai 32 (SC) populations, respectively, as well as 55 and 35 conditional QTLs. Thirty‐two QTL clusters in the ITMI population and 18 QTL clusters in the SC population explained 0.9%–46.2% of phenotypic variance for two to eight traits. A comparison between the normal and conditional QTL mapping analyses indicated that FSN made the smallest contribution to GY among the four GY components that were considered at the QTL level. The effects of TN, KN and TKW on GY were stronger at the QTL level.

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Section: Discussionsupporting

confidence: 77%

Analysis of contributors to grain yield in wheat at the individual quantitative trait locus level

Mao

Chen

et al. 2018

Plant Breeding

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“…Identification of quantitative trait loci (QTL) associated with waterlogging tolerance in wheat (e.g. Ballesteros et al 2014) opens up avenues, with further work, for possible markerassisted selection and discovery of underlying genes. For submergence tolerance of rice, a very different situation to soil waterlogging of wheat with shoots in air, identification of the group VII ethylene response factor (ERFVII) transcription factors, and more specifically the SUB1A locus, has transformed rice breeding for submergence tolerance (Mackill et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Mechanisms of waterlogging tolerance in wheat – a review of root and shoot physiology

Herzog

Striker

Colmer

et al. 2016

Plant Cell & Environment

287

205

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We review the detrimental effects of waterlogging on physiology, growth and yield of wheat. We highlight traits contributing to waterlogging tolerance and genetic diversity in wheat. Death of seminal roots and restriction of adventitious root length due to O2 deficiency result in low root:shoot ratio. Genotypes differ in seminal root anoxia tolerance, but mechanisms remain to be established; ethanol production rates do not explain anoxia tolerance. Root tip survival is short-term, and thereafter, seminal root re-growth upon re-aeration is limited. Genotypes differ in adventitious root numbers and in aerenchyma formation within these roots, resulting in varying waterlogging tolerances. Root extension is restricted by capacity for internal O2 movement to the apex. Sub-optimal O2 restricts root N uptake and translocation to the shoots, with N deficiency causing reduced shoot growth and grain yield. Although photosynthesis declines, sugars typically accumulate in shoots of waterlogged plants. Mn or Fe toxicity might occur in shoots of wheat on strongly acidic soils, but probably not more widely. Future breeding for waterlogging tolerance should focus on root internal aeration and better N-use efficiency; exploiting the genetic diversity in wheat for these and other traits should enable improvement of waterlogging tolerance.

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“…Alternatively, other genes were identified with consistent effects across a wide spectrum of stress conditions. Such genes are labeled as constitutive in the plant breeding literature (Brady et al, 2005;Ballesteros et al, 2015). Both adaptive and constitutive QTLs are important factors to contribute to improved stress resistance and tolerance in commercial crop species (Brady et al, 2005;Ballesteros et al, 2015).…”

Section: Validation Of Identified Qtlsmentioning

confidence: 99%

Genetic architecture of plant stress resistance: multi‐trait genome‐wide association mapping

et al. 2016

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Summary Plants are exposed to combinations of various biotic and abiotic stresses, but stress responses are usually investigated for single stresses only.Here, we investigated the genetic architecture underlying plant responses to 11 single stresses and several of their combinations by phenotyping 350 Arabidopsis thaliana accessions. A set of 214 000 single nucleotide polymorphisms (SNPs) was screened for marker‐trait associations in genome‐wide association (GWA) analyses using tailored multi‐trait mixed models.Stress responses that share phytohormonal signaling pathways also share genetic architecture underlying these responses. After removing the effects of general robustness, for the 30 most significant SNPs, average quantitative trait locus (QTL) effect sizes were larger for dual stresses than for single stresses.Plants appear to deploy broad‐spectrum defensive mechanisms influencing multiple traits in response to combined stresses. Association analyses identified QTLs with contrasting and with similar responses to biotic vs abiotic stresses, and below‐ground vs above‐ground stresses. Our approach allowed for an unprecedented comprehensive genetic analysis of how plants deal with a wide spectrum of stress conditions.

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Tolerance of wheat to vegetative stage soil waterlogging is conditioned by both constitutive and adaptive QTL

Cited by 36 publications

References 42 publications

Analysis of contributors to grain yield in wheat at the individual quantitative trait locus level

Analysis of contributors to grain yield in wheat at the individual quantitative trait locus level

Mechanisms of waterlogging tolerance in wheat – a review of root and shoot physiology

Genetic architecture of plant stress resistance: multi‐trait genome‐wide association mapping

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