Tolerance to ion toxicities enhances wheat (Triticum aestivum L.) grain yield in waterlogged acidic soils

Khabaz‐Saberi, Hossein; Barker, Susan J.; Rengel, Zed

doi:10.1007/s11104-011-1073-7

Cited by 26 publications

(20 citation statements)

References 24 publications

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“…However, the better shoot growth of the microelement‐tolerant varieties on waterlogged acidic soils in Khabaz‐Saberi et al . () contrasts with the same microelement‐tolerant and microelement‐intolerant varieties evaluated in waterlogged acidic soils for which no difference was found (Setter et al . ).…”

Section: Impact Of Waterlogging On Shootsmentioning

confidence: 80%

“…; Shabala ; Khabaz‐Saberi et al . ). Increased concentrations of Fe 2+ and Mn 2+ in the shoots of wheat during waterlogging have been reported (Stieger & Feller ; Khabaz‐Saberi et al .…”

Section: Impact Of Waterlogging On Shootsmentioning

confidence: 97%

“…A strong case for the importance of microelement toxicities in wheat during 40 d of waterlogging on strongly acidic soils (pH CaCl2 = 4.1–4.3) was that varieties tolerant to high Fe and Mn (and also Al) had 32–53% higher relative shoot DM compared with regular varieties (Khabaz‐Saberi & Rengel ) and subsequently also yielded better (Khabaz‐Saberi et al . ). However, the better shoot growth of the microelement‐tolerant varieties on waterlogged acidic soils in Khabaz‐Saberi et al .…”

Section: Impact Of Waterlogging On Shootsmentioning

confidence: 97%

“…Observations of responses to soil waterlogging of wheat genotypes characterized as waterlogging-tolerant in Mexico (Van Ginkel et al 1991;Boru et al 2001) but not in Australia (Condon 1999;Setter et al 1999) raised questions of how soil chemistry affects waterlogging tolerance in wheat (Setter et al 2009;Yaduvanshi et al 2012). Some authors have argued for increased evaluation of ion toxicity tolerances and breeding for tolerance to Fe 2+ and Mn 2+ to improve growth of wheat in some waterlogged soils (Setter et al 2009;Shabala 2011;Khabaz-Saberi et al 2012 Table S5). Spearman rank correlation coefficients and P values are presented in each panel.…”

Section: Possible Toxicity To Shoots Of Microelementsmentioning

confidence: 99%

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

Herzog

Striker

Colmer

et al. 2016

Plant Cell & Environment

251

197

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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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Section: Impact Of Waterlogging On Shootsmentioning

confidence: 80%

Section: Impact Of Waterlogging On Shootsmentioning

confidence: 97%

Section: Impact Of Waterlogging On Shootsmentioning

confidence: 97%

Section: Possible Toxicity To Shoots Of Microelementsmentioning

confidence: 99%

See 2 more Smart Citations

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

Herzog

Striker

Colmer

et al. 2016

Plant Cell & Environment

251

197

View full text Add to dashboard Cite

show abstract

“…However, the excessive presence of Fe in soils is equally common, in particular in soils characterized by low pH and hypoxic or anoxic conditions (Connolly and Guerinot, 2002). Toxicity arising from excess Fe exposure is recognized as one of the major plant diseases attributable to abiotic factors that impact the development and yield potential in the world's leading cereal crops, rice (Oryza sativa) and wheat (Triticum aestivum;Becker and Asch, 2005;Khabaz-Saberi et al, 2012). Understanding the mechanisms underlying excess Fe toxicity is therefore essential.…”

mentioning

confidence: 99%

AUX1 and PIN2 Protect Lateral Root Formation in Arabidopsis under Fe Stress

Song

et al. 2015

Plant Physiol.

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A stunted root system is a significant symptom of iron (Fe) toxicity, yet little is known about the effects of excess Fe on lateral root (LR) development. In this work, we show that excess Fe has different effects on LR development in different portions of the Arabidopsis (Arabidopsis thaliana) root system and that inhibitory effects on the LR initiation are only seen in roots newly formed during excess Fe exposure. We show that root tip contact with Fe is both necessary and sufficient for LR inhibition and that the auxin, but not abscisic acid, pathway is engaged centrally in the initial stages of excess Fe exposure. Furthermore, Fe stress significantly reduced PIN-FORMED2 (PIN2)-green fluorescent protein (GFP) expression in root tips, and pin2-1 mutants exhibited significantly fewer LR initiation events under excess Fe than the wild type. Exogenous application of both Fe and glutathione together increased PIN2-GFP expression and the number of LR initiation events compared with Fe treatment alone. The ethylene inhibitor aminoethoxyvinyl-glycine intensified Fe-dependent inhibition of LR formation in the wild type, and this inhibition was significantly reduced in the ethylene overproduction mutant ethylene overproducer1-1. We show that Auxin Resistant1 (AUX1) is a critical component in the mediation of endogenous ethylene effects on LR formation under excess Fe stress. Our findings demonstrate the relationship between excess Fe-dependent PIN2 expression and LR formation and the potential role of AUX1 in ethylene-mediated LR tolerance and suggest that AUX1 and PIN2 protect LR formation in Arabidopsis during the early stages of Fe stress.

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Plants Behavior Under Soil Acidity Stress: Insight into Morphophysiological, Biochemical, and Molecular Responses

Bhuyan

Hasanuzzaman

Mahmud

et al. 2019

Plant Abiotic Stress Tolerance

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Tolerance to ion toxicities enhances wheat (Triticum aestivum L.) grain yield in waterlogged acidic soils

Cited by 26 publications

References 24 publications

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

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

AUX1 and PIN2 Protect Lateral Root Formation in Arabidopsis under Fe Stress

Plants Behavior Under Soil Acidity Stress: Insight into Morphophysiological, Biochemical, and Molecular Responses

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