Root tip-dependent, active riboflavin secretion by Hyoscyamus albus hairy roots under iron deficiency

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Root tip-dependent, active riboflavin secretion by Hyoscyamus albus hairy roots under iron deficiency.

Hyoscyamus albus hairy roots with/without an exogenous gene (11 clones) were established by inoculation of Agrobacterium rhizogenes. All clones cultured under iron-deficient condition secreted riboflavin from the root tips into the culture medium and the productivity depended on the number and size of root tips among the clones. A decline of pH was observed before riboflavin production and root...

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Increased de novo riboflavin synthesis and hydrolysis of FMN are involved in riboflavin secretion from Hyoscyamus albus hairy roots under iron deficiency.

Riboflavin secretion by Hyoscyamus albus hairy roots under Fe deficiency was examined to determine where riboflavin is produced and whether production occurs via an enhancement of riboflavin biosynthesis or a stimulation of flavin mononucleotide (FMN) hydrolysis. Confocal fluorescent microscopy showed that riboflavin was mainly localized in the epidermis and cortex of the root tip and, at the c...

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Increased de novo riboflavin synthesis and hydrolysis of FMN are involved in riboflavin secretion from Hyoscyamus albus hairy roots under iron

Title Increased de novo riboflavin synthesis and hydrolysis of FMN are involved in riboflavin secretion from Hyoscyamus albus hairy roots under iron deficiency Author(s) Higa, Ataru; Khandakar, Jebunnahar; Mori, Yuko; Kitamura, Yoshie Citation Plant Physiology and Biochemistry, 58, pp.166-173; 2012 Issue Date 2012-09 URL http://hdl.handle.net/10069/29350 Right © 2012 Elsevier Masson SAS. All ri...

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Changes in cell size and number and in rhizodermal development contribute to root tip swelling of Hyoscyamus albus roots subjected to iron deficiency.

Root tip swelling is a common phenomenon observed when plant roots are subjected to Fe deficiency. We analysed whether an increase in cell number or an enlargement of cell width was involved in this phenomenon. Root tips of Hyoscyamus albus cultured with or without Fe were stained with fluorescent SYTO14 and analysed by confocal laser-scanning microscopy. Time-course and position-based examinat...

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Production of sesquiterpene-type phytoalexins by hairy roots of Hyoscyamus albus co-treated with cupper sulfate and methyl jasmonate.

The production of sesquiterpene-type phytoalexins with a vetispyradiene skeleton by Hyoscyamus albus hairy roots induced by methyl jasmonate (MeJA) was reported in a previous paper. The production pattern on co-treatment with cupper sulfate and MeJA (CuSO(4)-MeJA) showed a TLC profile differing from that on treatment with MeJA. Thus, we studied the production of phytoalexins on hairy root cultu...

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ژورنال

عنوان ژورنال: Plant Physiology and Biochemistry

سال: 2008

ISSN: 0981-9428

DOI: 10.1016/j.plaphy.2008.01.004