Mechanisms of waterlogging tolerance in wheat - a review of root and shoot physiology
We review the detrimental effects of waterlogging on physiology, growth and yield of wheat.We highlight traits contributing to waterlogging tolerance and genetic diversity inwheat. 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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| Subjects: | ADVENTITIUS ROOTS, AERENCHYMA, FLOODING TOLERANCE, GENOTYPIC VARIATION, MICRONUTRIENT TOXICITY, NITROGEN DEFICIENCY, O2 DEFICIENCY, RECOVERY ABILITY, ROOT ANOXIA TOLERANCE, WHEAT (TRITICUM AESTIVUM], |
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KOHA-OAI-AGRO:473582022-07-08T11:44:45Zhttp://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=47358http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=AAGMechanisms of waterlogging tolerance in wheat - a review of root and shoot physiologyHerzog, MaxStriker, Gustavo GabrielColmer, Timothy DavidPedersen, Oletextengapplication/pdfWe review the detrimental effects of waterlogging on physiology, growth and yield of wheat.We highlight traits contributing to waterlogging tolerance and genetic diversity inwheat. 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.We review the detrimental effects of waterlogging on physiology, growth and yield of wheat.We highlight traits contributing to waterlogging tolerance and genetic diversity inwheat. 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.ADVENTITIUS ROOTSAERENCHYMAFLOODING TOLERANCEGENOTYPIC VARIATIONMICRONUTRIENT TOXICITYNITROGEN DEFICIENCYO2 DEFICIENCYRECOVERY ABILITYROOT ANOXIA TOLERANCEWHEAT (TRITICUM AESTIVUM]Plant, Cell and Environment |
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ADVENTITIUS ROOTS AERENCHYMA FLOODING TOLERANCE GENOTYPIC VARIATION MICRONUTRIENT TOXICITY NITROGEN DEFICIENCY O2 DEFICIENCY RECOVERY ABILITY ROOT ANOXIA TOLERANCE WHEAT (TRITICUM AESTIVUM] ADVENTITIUS ROOTS AERENCHYMA FLOODING TOLERANCE GENOTYPIC VARIATION MICRONUTRIENT TOXICITY NITROGEN DEFICIENCY O2 DEFICIENCY RECOVERY ABILITY ROOT ANOXIA TOLERANCE WHEAT (TRITICUM AESTIVUM] |
| spellingShingle |
ADVENTITIUS ROOTS AERENCHYMA FLOODING TOLERANCE GENOTYPIC VARIATION MICRONUTRIENT TOXICITY NITROGEN DEFICIENCY O2 DEFICIENCY RECOVERY ABILITY ROOT ANOXIA TOLERANCE WHEAT (TRITICUM AESTIVUM] ADVENTITIUS ROOTS AERENCHYMA FLOODING TOLERANCE GENOTYPIC VARIATION MICRONUTRIENT TOXICITY NITROGEN DEFICIENCY O2 DEFICIENCY RECOVERY ABILITY ROOT ANOXIA TOLERANCE WHEAT (TRITICUM AESTIVUM] Herzog, Max Striker, Gustavo Gabriel Colmer, Timothy David Pedersen, Ole Mechanisms of waterlogging tolerance in wheat - a review of root and shoot physiology |
| description |
We review the detrimental effects of waterlogging on physiology, growth and yield of wheat.We highlight traits contributing to waterlogging tolerance and genetic diversity inwheat. 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. |
| format |
Texto |
| topic_facet |
ADVENTITIUS ROOTS AERENCHYMA FLOODING TOLERANCE GENOTYPIC VARIATION MICRONUTRIENT TOXICITY NITROGEN DEFICIENCY O2 DEFICIENCY RECOVERY ABILITY ROOT ANOXIA TOLERANCE WHEAT (TRITICUM AESTIVUM] |
| author |
Herzog, Max Striker, Gustavo Gabriel Colmer, Timothy David Pedersen, Ole |
| author_facet |
Herzog, Max Striker, Gustavo Gabriel Colmer, Timothy David Pedersen, Ole |
| author_sort |
Herzog, Max |
| title |
Mechanisms of waterlogging tolerance in wheat - a review of root and shoot physiology |
| title_short |
Mechanisms of waterlogging tolerance in wheat - a review of root and shoot physiology |
| title_full |
Mechanisms of waterlogging tolerance in wheat - a review of root and shoot physiology |
| title_fullStr |
Mechanisms of waterlogging tolerance in wheat - a review of root and shoot physiology |
| title_full_unstemmed |
Mechanisms of waterlogging tolerance in wheat - a review of root and shoot physiology |
| title_sort |
mechanisms of waterlogging tolerance in wheat - a review of root and shoot physiology |
| url |
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=47358 http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber= http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber= |
| work_keys_str_mv |
AT herzogmax mechanismsofwaterloggingtoleranceinwheatareviewofrootandshootphysiology AT strikergustavogabriel mechanismsofwaterloggingtoleranceinwheatareviewofrootandshootphysiology AT colmertimothydavid mechanismsofwaterloggingtoleranceinwheatareviewofrootandshootphysiology AT pedersenole mechanismsofwaterloggingtoleranceinwheatareviewofrootandshootphysiology |
| _version_ |
1756046766297317377 |