The Role of Endogenous Auxins and Ethylene in the Formation of Adventitious Roots and Hypocotyl Hypertrophy in Flooded Sunflower Plants (<i>Helianthus annuus</i>)

Wample, Robert L.; Reid, David M.

doi:10.1111/j.1399-3054.1979.tb01691.x

Cited by 94 publications

(46 citation statements)

References 31 publications

(31 reference statements)

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“…During submergence, polar auxin transport is required for AR growth in various species (Visser et al, 1996c;Wample and Reid, 1979;McDonald and Visser, 2003;Xu et al, 2005;Vidoz et al, 2010), including S. dulcamara. According to the gene set enrichment analysis, signaling by auxin was stronger in flooded stem tissue but not significantly induced in primordia.…”

Section: An Essential Role For Auxin In Controlling Ar Activationmentioning

confidence: 99%

A Co-Opted Hormonal Cascade Activates Dormant Adventitious Root Primordia upon Flooding in Solanum dulcamara

et al. 2016

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Section: An Essential Role For Auxin In Controlling Ar Activationmentioning

confidence: 99%

A Co-Opted Hormonal Cascade Activates Dormant Adventitious Root Primordia upon Flooding in Solanum dulcamara

et al. 2016

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“…The effects of soil waterlogging in stimulating the production of adventitous roots are well documented (e.g. Gill, 1975;Wample & Reid, 1978;Etherington, 1984); both auxine and ethene have been implicated in initiating adventitious root production (Wample & Reid, 1979;Drew, Jackson & Giffard, 1979;Etherington, 1983). Etherington (1984) showed that the flooding-tolerant species Epilobium hirsutum produced superficial adventitious roots from the stem base in response to soil flooding but the closely related flooding-intolerant species, Chamerion angustifolium, was incapable of initiating these roots.…”

Section: Tissue Mn and Fe Concentrationsmentioning

confidence: 99%

PHENOTYPIC FLEXIBILITY OF CAREX FLACCA SCHREB.

1987

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SUMMARYNine populations of Carexflacca Schreb., collected from sites which vary widely in their liability to soil flooding, were grown on an experimental soil with free drainage, transient flooding or continuous flooding for 26 weeks. Although the flooding treatments resulted in low redox potentials and high concentrations of reduced iron and manganese in the soil, the growth of C. flacca plants was little affected by flooding. All populations grew equally well on the flooded soils. All populations produced adventitious roots at the soil surface in the flooded treatments; these were absent from plants grown on the freely drained soil. Flooding produced an increase in the manganese concentration of roots and shoots but, although the iron content of roots was markedly increased by flooding, there was no increased transport to the shoots.In view ofthe absence of detectable phenotypic diflPerentiation between these populations from widely contrasting sites and their unimpaired growth on severely waterlogged soils, it is argued that C. flacca plants have a broad tolerance (phenotypic flexibility) of soil flooding. This may be important in the wide ecological amplitude of this species.

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“…Respostas morfológicas como o desenvolvimento de aerênquima, corredores de ar ou espaços aéreos descontínuos, raízes adventícias ou com crescimento diageotrópico e o aumento em superfície (Wample & Reid 1979, Drew et al 1981, Joly 1996, Scatena & Meneses 1996, Santiago & Paoli 2003, constituem-se em respostas expressas por plantas submetidas à hipóxia ou anoxia.…”

Section: Introductionunclassified

Respostas morfológicas em Guibourtia hymenifolia (Moric.) J. Leonard (Fabaceae) e Genipa americana L. (Rubiaceae), submetidas ao estresse por deficiência nutricional e alagamento do substrato

Santiago¹,

Paoli²

2007

Rev. bras. Bot.

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Respostas morfológicas emABSTRACT -Morphological responses in Guibourtia hymenifolia (Moric.) J. Leonard (Fabaceae) and Genipa americana L.(Rubiaceae) to nutrient deficit and flooding stress). The plastic responses of seedlings and young plants of two Brazilian native trees were studied. In G. hymenifolia no important morphological changes were found, except for starch reserve content that was lower in the lots in nutrient poor, drained soils (CCD), and nutrient poor, flooded soils (ALD). In Genipa americana the rich, drained soil group (CCN) developed adventitious roots with evident aerenchyma, these roots were more frequent in the rich flooded soil (ALN) lots. In this group we also detected lysogenic aerenchyma formation and lenticular hypertrophy in the stem. The diversity of responses to flooding and the wide distribution of Genipa americana along seasonal flooded areas, as the Pantanal in Miranda, MS, suggests a complex interaction between morphological and physiological adaptative characters, where the genetic potential play an important role.Key words -adventitious rooting, aerenchyma, biomass, flooding stress Palavras-chave -aerênquima, biomassa, estresse, raíz adventícia RESUMO -(Respostas morfológicas em IntroduçãoDiante dos atuais esforços na implementação de projetos de reposição de cobertura vegetal, sobretudo em ambientes frágeis como aqueles associados a recursos hídricos, parece óbvia a importância dos estudos que envolvam as respostas de plântulas de espécies nativas às condições de alagamento do substrato, uma vez que, nestes ambientes, são comuns as variações no estado hídrico dos solos, com modificações severas nas concentrações de oxigênio disponível para as raízes, requerendo das plantas respostas rápidas às novas condições impostas.Respostas morfológicas como o desenvolvimento de aerênquima, corredores de ar ou espaços aéreos descontínuos, raízes adventícias ou com crescimento diageotrópico e o aumento em superfície (Wample & Reid 1979, Drew et al. 1981, Joly 1996, Scatena & Meneses 1996, Santiago & Paoli 2003, constituem-se em respostas expressas por plantas submetidas à hipóxia ou anoxia.O desenvolvimento do aerênquima em plantas surge pelo afastamento (aerênquima esquisógeno) entre células na região da lamela média, formando grandes espaços intercelulares, como também é resultado da hidrólise da parede celular, e eventual lise celular (aerênquima lisógeno), promovida por etileno endógeno (Cutter 1978, Drew et al. 1981, He et al. 1996. Dantas et al. (2001) estudando plântulas de milho submetidas à hipóxia, destacaram a atividade da celulase na formação do aerêquima, bem como a inibição da formação destas 1.

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The Role of Endogenous Auxins and Ethylene in the Formation of Adventitious Roots and Hypocotyl Hypertrophy in Flooded Sunflower Plants (Helianthus annuus)

Cited by 94 publications

References 31 publications

A Co-Opted Hormonal Cascade Activates Dormant Adventitious Root Primordia upon Flooding in Solanum dulcamara

A Co-Opted Hormonal Cascade Activates Dormant Adventitious Root Primordia upon Flooding in Solanum dulcamara

PHENOTYPIC FLEXIBILITY OF CAREX FLACCA SCHREB.

Respostas morfológicas em Guibourtia hymenifolia (Moric.) J. Leonard (Fabaceae) e Genipa americana L. (Rubiaceae), submetidas ao estresse por deficiência nutricional e alagamento do substrato

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