Effects of indoleacetic acid on the desmid Micrasterias thomasiana

Wood, Nancy L.; Berliner, Martha D.

doi:10.1016/0304-4211(79)90040-3

Cited by 18 publications

(17 citation statements)

References 8 publications

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“…Moreover, application of IAA to microalgae Scenedesmus obliquus and S. armatus cultures resulted in the stimulation of cell division, growth and formation of four-celled rather than two-celled colonies (Mazur et al 2001). Earlier studies with the unicellular desmid Micrasterias thomasiana (Charophyta) (Wood and Berliner 1979) and with C. pyrenoidosa (Chlorophyceae) (Vance 1987), auxin was demonstrated to induce cell division. Kawano (2003) suggested that auxin might promote cell growth through ROS production.…”

Section: Discussionmentioning

confidence: 99%

The effect of natural and synthetic auxins on the growth, metabolite content and antioxidant response of green alga Chlorella vulgaris (Trebouxiophyceae)

Piotrowska‐Niczyporuk

Bajguz

2013

Plant Growth Regul

158

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The effect of exogenously applied natural [indole-3-acetic acid (IAA), phenylacetic acid (PAA), indole-3-butyric acid (IBA)] and synthetic [1-naphthaleneacetic acid (NAA)] auxins on the growth and metabolism of green microalga Chlorella vulgaris was examined. Exogenous auxins acted in a concentration-dependent manner on algal growth. Phytohormones at concentration of 100 lM inhibited algal growth expressed as the number of cells. IAA and IBA displayed the highest biological activity at 0.1 lM, whereas PAA and NAA were characterized by the greatest stimulatory effect on the number of cells at 1 lM. Treatment with IAA and IBA at 0.1 lM or NAA and PAA at 1 lM increased the concentration of photosynthetic pigments, monosaccharides and soluble proteins in C. vulgaris. Moreover, all auxins stimulated enzymatic (ascorbate peroxidase, catalase, superoxide dismutase) and non-enzymatic antioxidant (ascorbate, glutathione) systems in C. vulgaris, and therefore, suppressed lipid peroxidation and hydrogen peroxide accumulation. The data supports the hypothesis that auxins play a central role in the regulation of C. vulgaris growth and metabolism and the components of cellular redox systems that are thought to have a prominent role in the regulation of auxindependent processes.

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Section: Discussionmentioning

confidence: 99%

The effect of natural and synthetic auxins on the growth, metabolite content and antioxidant response of green alga Chlorella vulgaris (Trebouxiophyceae)

Piotrowska‐Niczyporuk

Bajguz

2013

Plant Growth Regul

158

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“…In fact, auxin has been detected in some charophyte algae (Cooke et al, 2002;Hori et al, 2014), and several auxin responses have been reported. In Micrasterias thomasiana, cell division is induced in the presence of auxin (Wood and Berliner, 1979). Depolymerization of microtubules with auxin was observed in Chara globularis (Jin et al, 2008).…”

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confidence: 99%

Primitive Auxin Response without TIR1 and Aux/IAA in the Charophyte Alga Klebsormidium nitens

et al. 2017

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The phytohormone auxin regulates many aspects of growth and development in land plants, but the origin and evolution of auxin signaling and response mechanisms remain largely unknown. Indeed, it remains to be investigated whether auxin-related pathways diverged before the emergence of land plants. To address this knowledge deficit, we analyzed auxin responses in the charophyte alga Klebsormidium nitens NIES-2285, whose ancestor diverged from a green algal ancestor during the evolution of land plants. This strain is the same as Klebsormidium flaccidum NIES-2285, for which the draft genome was sequenced in 2014, and was taxonomically reclassified as K. nitens. This genome sequence revealed genes involved in auxin responses. Furthermore, the auxin indole-3-acetic acid (IAA) was detected in cultures of K. nitens, but K. nitens lacks the central regulators of the canonical auxin-signaling pathway found in land plants. Exogenous IAA inhibited cell division and cell elongation in K. nitens. Inhibitors of auxin biosynthesis and of polar auxin transport also inhibited cell division and elongation. Moreover, exogenous IAA rapidly induced expression of a LATERAL ORGAN BOUNDARIES-DOMAIN transcription factor. These results suggest that K. nitens has acquired the part of the auxin system that regulates transcription and cell growth without the requirement for the central players that govern auxin signaling in land plants.

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“…Due to the small n and the large standard deviation these results may be insignificant. Wood and Berliner (1979) found gibberellic acid to have no effect on growth in the desmid Alicrasterias tbomasiana at concentrations of 1 mg/1.…”

Section: Discussionmentioning

confidence: 99%

“…1974). The desmid Micrasterias shows no response to GA except for GA having a lethal effect at a pH of S when concentrations are above S mg/1 -10 mg/l (Wood and Berliner, 1979 ). Controls at pH S with no added GA showed no detrimental effects from the acidity of the media (Wood and Berliner, 1979).…”

Section: Environmental Controlmentioning

confidence: 99%

“…The desmid Micrasterias shows no response to GA except for GA having a lethal effect at a pH of S when concentrations are above S mg/1 -10 mg/l (Wood and Berliner, 1979 ). Controls at pH S with no added GA showed no detrimental effects from the acidity of the media (Wood and Berliner, 1979). As growth in most algal species is affected by exogenously added GA it is possible that control of growth and morphogenesis may be at least partially regulated by this growth promoter, even if it is not yet possible to state that algae produce GA (Taylor, 1977).…”

Section: Environmental Controlmentioning

confidence: 99%

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The effect of plant growth regulators on the growth of Closterium moniliferum

Christensen¹

2000

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Effects of indoleacetic acid on the desmid Micrasterias thomasiana

Cited by 18 publications

References 8 publications

The effect of natural and synthetic auxins on the growth, metabolite content and antioxidant response of green alga Chlorella vulgaris (Trebouxiophyceae)

The effect of natural and synthetic auxins on the growth, metabolite content and antioxidant response of green alga Chlorella vulgaris (Trebouxiophyceae)

Primitive Auxin Response without TIR1 and Aux/IAA in the Charophyte Alga Klebsormidium nitens

The effect of plant growth regulators on the growth of Closterium moniliferum

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