Effects of soil flooding on leaf gas exchange and growth of two neotropical pioneer tree species

Mielke, Marcelo Schramm; Almeida, Alex-Alan Furtado de; Gomes, Fábio Pinto; Mangabeira, Pedro Antônio Oliveira; Silva, Delmira da Costa

doi:10.1007/s11056-005-0247-7

Cited by 44 publications

(38 citation statements)

References 10 publications

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“…Similar results have been reported previously for other tree species as well (Lopez and Kursar 1999;Mielke et al 2003;Mielke et al 2005). This is explained by water deficiency in the above-ground parts with low transpiration rate under waterlogging (Parent et al 2008).…”

Section: Leaf and Stem Morphologysupporting

confidence: 89%

Effect of waterlogging on boreal forest tree seedlings during dormancy and early growing season

Wang¹

2017

Diss. For.

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More precipitation in the form of rain in winter together with deteriorated ditch networks may expose drained peatland forestry to winter or spring waterlogging in boreal forests. The response of main boreal forest species on soil waterlogging is important for predicting forest productivity and justifying the demand for ditch network maintenance. In this study, the aim was to find out the physiological and growth responses of 1-year-old Norway spruce (Picea abies (L.) Karst.), silver birch (Betula pendula Roth) and pubescent birch (Betula pubescens Ehrh.) seedlings subjected to one-month waterlogging at the end of the dormancy phase, and to find out the morphology, physiology and growth of silver birch and pubescent birch seedlings subjected to one-month waterlogging at the beginning of the growing season.Two experiments were carried out in growth chambers. In experiment 1, Norway spruce seedlings were subjected to either no waterlogging or waterlogging for one month at 2 o C, after which a six-week follow-up growing season allowed the seedlings to recover. In experiment 2, silver birch and pubescent birch seedlings went through a four-week dormancy (weeks 1-4), a four-week early growing season (weeks 5-8), and a four-week late growing season (weeks 9-12). The treatments were 1) no waterlogging throughout the experiment (NW); 2) four-week waterlogging during dormancy (Dormancy waterlogging, DW); 3) four-week waterlogging during the early growing season (Growth waterlogging, GW); and 4) four-week dormancy waterlogging followed by four-week growth waterlogging during the early growing season (DWGW).Dormancy waterlogging reduced root volume and increased root mortality, but did not affect dark-acclimated chlorophyll fluorescence (F v /F m ) or the biomass of leaves, stems and roots in Norway spruce. Root biomass and root hydraulic conductance (K r ) of silver birch was reduced but aboveground organs were not affected by dormancy waterlogging. On the contrary, in pubescent birch root morphology, biomass and K r were not affected, but gas exchange was reduced by dormancy waterlogging. However, the biomass of leaves and stems was not negatively affected in pubescent birch. In conclusion, these tree species can tolerate a one-month winter waterlogging well.Growth waterlogging led to the reduction of stomatal conductance (g s ), and thus the reduction of light-saturated photosynthesis rate (A max ) in both birch species, although recovery was seen during the follow-up growing season. It also led to lower leaf area in both birch species. Growth waterlogging led also to decreased the K, Ca, Mg, Mn and B contents of leaves in silver birch, whereas in pubescent birch only Ca and Mg contents were decreased. In pubescent birch, fine cluster roots, the incidence of non-glandular trichomes, and stem lenticels were increased by growth waterlogging. However, silver birch did not show such acclimation to waterlogging. In conclusion, growth waterlogging caused more negative effects to both birch species than dormancy waterl...

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Section: Leaf and Stem Morphologysupporting

confidence: 89%

Effect of waterlogging on boreal forest tree seedlings during dormancy and early growing season

Wang¹

2017

Diss. For.

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“…Hypertrophied lenticels are involved in gas exchange between the atmosphere and the intercellular spaces of stems and roots, providing a channel for elimination of metabolites produced by aerobic respiration (Tsukahara and Kozlowski, 1985). This character is frequently associated with flooding tolerance in tree species (Parolin, 2002;Kolb et al, 2002;Kursar, 1999, 2003;Mielke et al, 2005).…”

Section: Responses To Flooding and Submergencementioning

confidence: 99%

Evidence of ecotypic differentiation between populations of the tree species Parapiptadenia rigida due to flooding

Silva¹,

Carvalho²,

Ruas³

et al. 2010

Genet. Mol. Res.

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ABSTRACT. The tree species Parapiptadenia rigida, native to southern South America, is frequently used in reforestation of riverbanks in Brazil. This tree is also a source of gums, tannins and essential oils, and it has some medicinal uses. We investigated flooding tolerance and genetic diversity in two populations of P. rigida; one of them was naturally exposed to flooding. Plants derived from seeds collected from each population were submitted to variable periods of experimental waterlogging and submergence. Waterlogging promoted a decrease in biomass and structural adjustments, such as superficial roots with aerenchyma and hypertrophied lenticels, that contribute to increase atmospheric oxygen intake. Plants that were submerged had an even greater reduction in biomass and a high mortality rate (40%). The two populations varied significantly in their RAPD marker profiles, in their ability to produce aerenchyma when waterlogged and to survive when submerged, suggesting ecotypic differentiation between them. Hence, the seasonal flooding that has been challenging the tropical riparian forest appears to be genetically modifying the P. rigida populations exposed to it by selecting individuals with increased ability to live under this condition.

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“…The presence of lenticels due to flooding was also reported by Mielke et al (2005a), who studied Annona glabra, Povh et al (2005), who studied paineira (Chorisia speciosa A. St.-Hil.…”

Section: Oliveira Akm E Gualtieri Scjmentioning

confidence: 55%

GAS EXCHANGE IN YOUNG PLANTS OF Tabebuia aurea(Bignoniaceae Juss.) SUBJECTED TO FLOODING STRESS1

Oliveira

Gualtieri

2016

Rev. Árvore

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-The Paratudo (Tabebuia aurea) is a species occurring in the Pantanal of Miranda, Mato Grosso do Sul, Brazil, an area characterized by seasonal flooding. To evaluate the tolerance of this plant to flooding, plants aged four months were grown in flooded soil and in non-flooded soil (control group). Stomatal conductance, transpiration and CO 2 assimilation were measured during the stress (48 days) and recovery (11 days) period, totalling 59 days. The values of stomatal conductance of the control group and stressed plants at the beginning of the flooded were 0.33 mol m . Flooded soil reduced photosynthesis and stomatal conductance, leading to the hypertrophy of the lenticels. These parameters recovered and after this period, and plants exhibited tolerance to flooding stress by reducing their physiological activities.Keywords: CO 2 assimilation; Hydric stress; Hypoxia tolerance. TROCAS GASOSAS EM PLANTAS JOVENS DE Tabebuia aurea (Bignoniaceae Juss.) SUBMETIDAS A ESTRESSE POR ALAGAMENTORESUMO -O paratudo, Tabebuia aurea, é uma espécie de larga ocorrência no Pantanal de Miranda, Mato Grosso do Sul, uma área de inundação sazonal. Para determinar o grau de tolerância da espécie ao alagamento, um grupo de plantas com quatro meses de idade foi mantido em vasos alagados, além do grupo controle, com as taxas de condutância estomática, transpiração e assimilação de CO 2 determinadas durante o período de estresse (48 dias) e de recuperação (11 dias), totalizando 59 dias. Em relação aos valores obtidos, a condutância estomática, no início do alagamento, atingiu 0,33 mol m

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Effects of soil flooding on leaf gas exchange and growth of two neotropical pioneer tree species

Cited by 44 publications

References 10 publications

Effect of waterlogging on boreal forest tree seedlings during dormancy and early growing season

Effect of waterlogging on boreal forest tree seedlings during dormancy and early growing season

Evidence of ecotypic differentiation between populations of the tree species Parapiptadenia rigida due to flooding

GAS EXCHANGE IN YOUNG PLANTS OF Tabebuia aurea(Bignoniaceae Juss.) SUBJECTED TO FLOODING STRESS1

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