Effects of flooding on downstream processes of glycolysis and fermentation in roots of <i>Melaleuca cajuputi</i> seedlings

Yamanoshita, Takashi; Masumori, Masaya; Yagi, Hironori; Kojima, Kôhei

doi:10.1007/s10310-004-0140-9

Cited by 25 publications

(18 citation statements)

References 29 publications

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“…Christianson et al 2010;LeProvost et al 2012); in poplar, elevated ADH and PDC transcript abundance appeared in less than 1 h after the change from normoxia to hypoxia ). There are hints that flood-tolerant species exhibit higher rates of alcoholic fermentation than flood-sensitive trees (Porth et al 2005;Parelle et al 2006;LeProvost et al 2012), but such patterns are not consistent (Yamanoshita et al 2005;Ferner et al 2012).…”

Section: Responses Of Tree To Waterlogging 2249mentioning

confidence: 99%

Molecular and physiological responses of trees to waterlogging stress

Kreuzwieser

Rennenberg

2014

Plant Cell & Environment

248

155

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One major effect of global climate change will be altered precipitation patterns in many regions of the world. This will cause a higher probability of long-term waterlogging in winter/spring and flash floods in summer because of extreme rainfall events. Particularly, trees not adapted at their natural site to such waterlogging stress can be impaired. Despite the enormous economic, ecological and social importance of forest ecosystems, the effect of waterlogging on trees is far less understood than the effect on many crops or the model plant Arabidopsis. There is only a handful of studies available investigating the transcriptome and metabolome of waterlogged trees. Main physiological responses of trees to waterlogging include the stimulation of fermentative pathways and an accelerated glycolytic flux. Many energy-consuming, anabolic processes are slowed down to overcome the energy crisis mediated by waterlogging. A crucial feature of waterlogging tolerance is the steady supply of glycolysis with carbohydrates, particularly in the roots; stress-sensitive trees fail to maintain sufficient carbohydrate availability resulting in the dieback of the stressed tissues. The present review summarizes physiological and molecular features of waterlogging tolerance of trees; the focus is on carbon metabolism in both, leaves and roots of trees.

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Section: Responses Of Tree To Waterlogging 2249mentioning

confidence: 99%

Molecular and physiological responses of trees to waterlogging stress

Kreuzwieser

Rennenberg

2014

Plant Cell & Environment

248

155

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“…Seeds were germinated in acid-washed and sterilized sand. Seedlings were grown in a growth chamber (16 h light/8 h dark; 200 μmol m −2 s −1 photosynthetic photon flux density; 30°C) and were watered daily with nutrient solution that was modified from that described by Yamanoshita et al (2005) and contained 2 mM NH 4 NO 3 , 0.1 mM NaH 2 PO 4 , 0.6 mM KCl, 0.35 mM CaCl 2 , 0.25 mM MgSO 4 , 10 μM FeSO 4 , 20 μM H 3 BO 3 , 3 μM MnCl 2 , 1 μM ZnSO 4 , 0.5 μM CuSO 4 , and 0.5 μM Na 2 MoO 4 (pH 4.0). Seedlings of 2 to 6 months old were transferred into 3-l plastic pots (six seedlings per pot) containing the aerated nutrient solution described above.…”

Section: Plant Materialsmentioning

confidence: 99%

Role of aluminum-binding ligands in aluminum resistance of Eucalyptus camaldulensis and Melaleuca cajuputi

et al. 2007

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We investigated the roles of Al-binding ligands in Al exclusion from roots and in internal Al detoxification in roots as Al resistance mechanisms in two Al-resistant Myrtaceae trees, Eucalyptus camaldulensis Dehnh. and Melaleuca cajuputi Powell. The amounts of ligands secreted from roots and contained in root tips of these species were compared with those of an Al-sensitive species, Melaleuca bracteata F. Muell., after the roots were exposed to 0 or 1 mM AlCl 3 solution. Secretion of well-known ligands (citrate, oxalate, and malate) from roots under Al treatment was low in all species. However, in E. camaldulensis, the Al-binding capacity of root exudates under Al treatment was considerable and was higher than that in M. bracteata. Gel filtration chromatography revealed that a low-molecular-weight Al-binding ligand was secreted from roots in response to Al only in E. camaldulensis. On the other hand, the Al-binding capacity of cell sap in root tips under Al treatment was similar for the resistant and sensitive species. These results suggest that Al exclusion by secretion of the unknown low-molecular-weight Al-binding ligand from roots contributes to the Al resistance of E. camaldulensis, whereas M. cajuputi has developed Al-resistance mechanisms other than secretion of ligands from roots or concentration of internal ligands in root tips.

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“…The seedlings subsequently grow rapidly as groundwater levels decrease after the rainy season, and they may reach heights greater than 1 m within 1 year after germination; as a result, they rarely suffer from complete submergence during subsequent rainy seasons. Melaleuca cajuputi seedlings develop adventitious roots that are connected to the aboveground portion of the stem above the water through aerenchyma in response to flooding, which permits aerobic respiration for roots below the water (Yamanoshita 2001;Yamanoshita et al 2005). The high flooding tolerance of this species is one reason why pure M. cajuputi forests form in peat swamps.…”

Section: Introductionmentioning

confidence: 98%

Morphological and anatomical changes of Melaleuca cajuputi under submergence

Tanaka

Masumori

Yamanoshita

et al. 2011

Trees

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Melaleuca cajuputi is a woody plant of the Myrtaceae which is a dominant species in tropical peat swamps in southern Thailand, where the groundwater level fluctuates greatly. Although the current year seedlings are likely submerged, their adaptive responses have never been studied. The objective of the present study was to examine their responses to submergence, and especially their morphological and anatomical changes. Not only did the seedlings of M. cajuputi survive submergence for 56 days, but they could also increase their dry weight, shoot length, and leaf number during submergence. These growth responses to submergence indicate that the seedlings of M. cajuputi could make photosynthetic production under water. The leaves that developed under water were heterophyllous ''aquatic leaves'' that appear to represent adaptations to improve the uptake of gases from the water. Intercellular spaces in the stems and leaves were more strongly developed in the submerged seedlings than in nonsubmerged seedlings with the shoot and leaves in the air. The intercellular spaces appear to be schizogenous aerenchyma that facilitates gas exchange. The growth responses and anatomical responses in stems and leaves to submergence, which were found in M. cajuputi, are commonly known in herbaceous plants with amphibious characteristics, but had not been reported in woody plants. And our results suggest that M. cajuputi adapts to submergence similarly to other amphibious plants, thereby ensuring continuing biomass production.

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Effects of flooding on downstream processes of glycolysis and fermentation in roots of Melaleuca cajuputi seedlings

Cited by 25 publications

References 29 publications

Molecular and physiological responses of trees to waterlogging stress

Molecular and physiological responses of trees to waterlogging stress

Role of aluminum-binding ligands in aluminum resistance of Eucalyptus camaldulensis and Melaleuca cajuputi

Morphological and anatomical changes of Melaleuca cajuputi under submergence

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