Effect of aluminum on callose synthesis in root tips of tea (<i>Camellia sinensis</i>L.) plants

Lian, Ch unlan; wake, Yoshihisa Oi; Yokota, Hiromi; Gang, Wang; Konishi, Shota

doi:10.1080/00380768.1998.10414495

Cited by 8 publications

(4 citation statements)

References 21 publications

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“…; Jorns et al 1991) and tea (Camellia sinensis L.; Lian et al 1998). Aluminum quite rapidly induces callose deposition, especially in the epidermis and outer cortex of root tips (Schreiner et al 1994).…”

Section: Introductionmentioning

confidence: 99%

Aluminum tolerance and aluminum-induced deposition of callose and lignin in the root tips of Melaleuca and Eucalyptus species

Tahara

Norisada

Hogetsu

et al. 2005

Journal of Forest Research

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We exposed the roots of nine Myrtaceae species (Melaleuca bracteata F. Muell., Melaleuca cajuputi Powell, Melaleuca glomerata F. Muell., Melaleuca leucadendra [L.] L., Melaleuca quinquenervia [Cav.] S.T. Blake, Melaleuca viridiflora Sol. ex Gaertner, Eucalyptus camaldulensis Dehnh., Eucalyptus deglupta Bl., and Eucalyptus grandis W. Hill ex Maiden) to 1 mM Al in a nutrient solution for either 24 h or 20 days to evaluate their sensitivity to excess Al and to determine whether callose and lignin formation can be used as interspecific indicators of Al sensitivity. Inhibition of root elongation by Al varied among the species. Melaleuca leucadendra, M. cajuputi, E. grandis, M. quinquenervia, and E. deglupta were tolerant to 1 mM Al, whereas M. viridiflora, E. camaldulensis, M. glomerata, andM. bracteata were sensitive to 1 mM Al. We found that Al induced callose formation in the root tips of each species, but lignin was formed only in the root tips of the most sensitive species, M. bracteata. Root elongation at 1 mM Al was negatively correlated with Al-induced callose formation but not with the Al-induced lignin formation in the root tips. These results suggest that Al-induced callose formation, rather than lignin formation, can be used as an interspecific indicator of Al sensitivity.

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Section: Introductionmentioning

confidence: 99%

Aluminum tolerance and aluminum-induced deposition of callose and lignin in the root tips of Melaleuca and Eucalyptus species

Tahara

Norisada

Hogetsu

et al. 2005

Journal of Forest Research

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“…However, the callose content in root tips of tea plants exposed to Al was lower than it was in the root tips of plants cultured in media without Al (Lian et al 1998). Furthermore, tea root growth is stimulated by the presence of Al (Konishi et al 1985).…”

Section: Discussionmentioning

confidence: 91%

Tea plant (Camellia sinensisL.) roots secrete oxalic acid and caffeine into medium containing aluminum

Morita

Yanagisawa

Maeda

et al. 2011

Soil Science and Plant Nutrition

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We examined the response of the tea plant (Camellia sinensis L.) to aluminum (Al) exposure under sterile conditions, focusing specifically on the secretion of low molecular mass organic compounds from roots. After germination in agar medium, tea seedlings together with medium were placed on agar containing 0.4 mM Al with 0.2% hematoxyline (hematoxylin-Al medium). The purple color of the hematoxylin-Al medium was observed to fade gradually, until none of the color remained 6 days later. The tea seedlings were then treated with simple calcium solution (0.2 mM, at pH 4.2) containing AlCl 3 , which ranged in concentration from 0 to 0.8 mM, for 24 hrs. The amount of oxalate secreted into the medium increased as the external Al concentration increased, while the concentrations of malate and citrate in the medium remained unchanged. Oxalate secretion started within 30 min after Al exposure and increased linearly thereafter. The findings demonstrated that oxalate was a key compound in the Al-tolerance mechanism employed by the tea plant, which detoxifies Al 3þ externally in the rhizosphere. In addition to oxalate, caffeine was also secreted by tea roots in response to Al exposure. It is possible that caffeine excretion from the roots of tea plants may stimulate root growth through the inhibition of callose deposition in root tips.

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“…Many reports have described other specific Al effects in a large number of cellular processes (Panda & Matsumoto 2007), influencing the dynamics of the cytoskeleton (Frantzios et al 2005) with effects on vesicle movement and chromosome segregation, growth and cell division (Doncheva et al 2005) and synthesis of callose (Lian et al 1998). Additionally, changes on chromosome morphology, aberrations and disturbance in the nucleolar cycle during mitosis have been also reported (Yi et al 2010;Zangh et al 2014).…”

Section: Introductionmentioning

confidence: 98%

Aluminum effects on embryo suspensor polytene chromosomes ofPhaseolus coccineusL

Bartoli

Toppi

Andreucci

et al. 2017

Plant Biosystems - An International Journal Dealing with all As

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Aluminum (Al) represents a widespread environmental pollutant, with severe toxic impacts on plants.\ud In this study, we documented for the first time the structural and functional responses induced by two\ud concentrations of AlCl3 (10−2 M and 10−1 M) in the polytene chromosomes that characterize the chromatin\ud organization in the embryo suspensor cells of Phaseolus coccineus. Polytene chromosomes showed signs\ud of dose-dependent genotoxicity following AlCl3 treatments with a significant increase in both chromatin\ud stickiness and chromatin fragmentation. Polytene chromosomes specifically reacted to AlCl3 also in terms\ud of DNA and RNA puffing activity: with respect to the control, the treatments promoted ex-novo and/or\ud inhibited puff formation along chromosome arms, suggesting a fine modulation of the differential genome\ud activity in response to the treatments. The nuclei of suspensors from control and treated seeds showed\ud nucleoli mainly arranged by more than one NOR-bearing chromosome. In addition, AlCl3 treatments\ud affected the frequency of nucleoli organized by singular organizer chromosomes, with an increase in the\ud frequencies of nucleoli organized by chromosome II and a reduction in the frequencies of those organized\ud by chromosomes I or V. These results confirm that, also in our system, nucleolus may react as stress response\ud organelle.\ud Introductio

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Effect of aluminum on callose synthesis in root tips of tea (Camellia sinensisL.) plants

Cited by 8 publications

References 21 publications

Aluminum tolerance and aluminum-induced deposition of callose and lignin in the root tips of Melaleuca and Eucalyptus species

Aluminum tolerance and aluminum-induced deposition of callose and lignin in the root tips of Melaleuca and Eucalyptus species

Tea plant (Camellia sinensisL.) roots secrete oxalic acid and caffeine into medium containing aluminum

Aluminum effects on embryo suspensor polytene chromosomes ofPhaseolus coccineusL

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