Difference in response to aluminum among Japanese coniferous species

Tomioka, Rie; Takenaka, Chisato

doi:10.1080/00380768.2004.10408532

Cited by 3 publications

(4 citation statements)

References 27 publications

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“…Aluminum can positively infl uence the root biomass of the seedlings of A. fi rma, C. obtusa, and Quercus serrata (Table 1, Tomioka and Takenaka 2004;Tomioka et al 2005). The results obtained for C. obtusa were in contrast to those obtained by Kohno et al (1995b).…”

Section: Root Biomasscontrasting

confidence: 80%

“…In the seedlings of C. japonica and P. densifl ora, the root respiration rates decreased and the root nutrients and biomass were also negatively affected (Miyake et al 1991;Lee et al 1997b;Hirano and Hijii 2000). Callose (1,3-b-glucan), an amorphous polysaccharide of glucose, was induced in the root tips of C. obtusa and C. japonica seedlings following a 1-month of exposure to 2.5 mM Al (Tomioka and Takenaka 2004).…”

Section: Root Physiologymentioning

confidence: 99%

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Root parameters of forest trees as sensitive indicators of acidifying pollutants: a review of research of Japanese forest trees

Hirano

Mizoguchi

Brunner

2007

Journal of Forest Research

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The root parameters of forest trees can be indicators of a changing environment. We summarize the results of root studies with regard to the effects of acidifying pollutants, especially soil acidifi cation and aluminum toxicity, on various root parameters of Japanese forest trees under experimentally controlled conditions. All root parameters such as biomass, morphology, nutritional status, and physiology can be regarded as indicators, because, under laboratory conditions, root responses occur prior to the responses in the aboveground parts. However, considering the conditions of forest sites, the nutritional status and physiological changes are better indicators of soil acidifi cation and Al stress than the biomass and morphological response. The currently available data suggest that the most important indicator is the Ca/Al molar ratio in roots of Japanese tree species. In order to predict and detect the initial effects of soil acidifi cation, we postulate that the specifi c root response to the Ca/Al molar ratio of tree roots should be considered as a parameter for use in long-term forest monitoring sites.

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Section: Root Biomasscontrasting

confidence: 80%

Section: Root Physiologymentioning

confidence: 99%

Root parameters of forest trees as sensitive indicators of acidifying pollutants: a review of research of Japanese forest trees

Hirano

Mizoguchi

Brunner

2007

Journal of Forest Research

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“…In plantation forests in Japan, C. obtusa can grow in low-fertility acidic soils (Sawata and Kato 1991;Yamashita et al 2004), being one of the species that is relatively tolerant to Al stress under experimental conditions (Tsutsumi 1962;Tomioka and Takenaka 2004). However, very few studies have focused on the root trait responses of mature C. obtusa to adverse acidic soil conditions.…”

Section: Root Traits With Different Soil Abcsmentioning

confidence: 98%

Fine root traits in Chamaecyparis obtusa forest soils with different acid buffering capacities

Miyatani

Mizusawa

Okada

et al. 2015

Trees

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Key message The biomass, morphology, and respiration of the fine roots of Chamaecyparis obtusa did not change between different soil acid buffering capacities. Soil nitrate has noticeable effects on morphology and respiration. Abstract Low soil acid buffering capacity (ABC) accelerates soil acidification because of the lower concentrations of base cations (BC) and higher concentrations of aluminum (Al) present under such conditions. More information on fine root traits across soil ABC gradients is required to evaluate the effects of accelerated soil acidification in mature forests, especially in East Asia. We investigated the biomass, morphology (specific root length; SRL), and respiration rates of fine roots and analyzed the soil nitrogen status in seven Chamaecyparis obtusa stands with two highly contrasting ABC soils. There were no significant differences in the biomass, SRL, and respiration rates of fine roots between high-and low-ABC stands. However, fine roots in the low-ABC stands were concentrated in the uppermost soil layers and the biomass proportion of roots \0.5 mm in diameter was higher in low-ABC stands than in high-ABC stands. The fine root biomass increased with increasing soil Al, NH 4 ? -N, and C and with decreasing soil BC and bulk density. The SRL and respiration rates of fine roots were positively correlated with soil NO 3 --N. We conclude that the fine root traits were affected not only by soil ABC but also by other soil properties in the forest.

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“…Among plant species, tolerance to Al exposure varies widely, with micromolar concentrations of Al capable of producing tremendous damage to annual crops, while much higher concentrations of Al are required to generate obvious impacts on trees [14,15,16]. Even among tree species, Al can inhibit root growth (sugar maple, loblolly pine), those these impacts might be rapidly reversed when Al concentrations are reduced [17,18,19,20].…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic Revelation of Phenolic Compounds Involved in Aluminum Toxicity Responses in Roots of Cunninghamia lanceolata (Lamb.) Hook

Lin

2019

Genes

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: Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) is one of the most important coniferous evergreen tree species in South China due to its desirable attributes of fast growth and production of strong and hardy wood. However, the yield of Chinese fir is often inhibited by aluminum (Al) toxicity in acidic soils of South China. Understanding the molecular mechanisms of Chinese fir root responses to Al toxicity might help to further increase its productivity. Here we used the Illumina Hiseq4000 platform to carry out transcriptome analysis of Chinese fir roots subjected to Al toxicity conditions. A total of 88.88 Gb of clean data was generated from 12 samples and assembled into 105,732 distinct unigenes. The average length and N50 length of these unigenes were 839 bp and 1411 bp, respectively. Among them, 58362 unigenes were annotated through searches of five public databases (Nr: NCBI non-redundant protein sequences, Swiss-Prot: A manually annotated and reviewed protein sequence database, GO: Gene Ontology, KOG/COG: Clusters of Orthologous Groups of proteins, and KEGG: the Kyoto Encyclopedia of Genes and Genomes database), which led to association of unigenes with 44 GO terms. Plus, 1615 transcription factors (TFs) were functionally classified. Then, differentially expressed genes (DEGs, |log2(fold change)| ≥ 1 and FDR ≤ 0.05) were identified in comparisons labelled TC1 (CK-72 h/CK-1 h) and TC2 (Al-72 h/Al-1 h). A large number of TC2 DEGs group were identified, with most being down-regulated under Al stress, while TC1 DEGs were primarily up-regulated. Combining GO, KEGG, and MapMan pathway analysis indicated that many DEGs are involved in primary metabolism, including cell wall metabolism and lipid metabolism, while other DEGs are associated with signaling pathways and secondary metabolism, including flavonoids and phenylpropanoids metabolism. Furthermore, TFs identified in TC1 and TC2 DEGs represented 21 and 40 transcription factor families, respectively. Among them, expression of bHLH, C2H2, ERF, bZIP, GRAS, and MYB TFs changed considerably under Al stress, which suggests that these TFs might play crucial roles in Chinese fir root responses to Al toxicity. These differentially expressed TFs might act in concert with flavonoid and phenylpropanoid pathway genes in fulfilling of key roles in Chinese fir roots responding to Al toxicity.

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Difference in response to aluminum among Japanese coniferous species

Cited by 3 publications

References 27 publications

Root parameters of forest trees as sensitive indicators of acidifying pollutants: a review of research of Japanese forest trees

Root parameters of forest trees as sensitive indicators of acidifying pollutants: a review of research of Japanese forest trees

Fine root traits in Chamaecyparis obtusa forest soils with different acid buffering capacities

Transcriptomic Revelation of Phenolic Compounds Involved in Aluminum Toxicity Responses in Roots of Cunninghamia lanceolata (Lamb.) Hook

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