Callus Tissues from the Mosses
 Polytrichum
 and
 Atrichum

Ward, Max

doi:10.1126/science.132.3437.1401

Cited by 27 publications

(5 citation statements)

References 3 publications

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“…All of the calluses reported in Bryophytes previously by several workers have been produced from the dioecious species which are mostly diploid (Allsopp 1957, Ward 1960, Lal 1961, Rashid and Chopra 1969. In these calluses, the abnormal cells like polyploid or aneuploid have not been reported.…”

Section: Discussionmentioning

confidence: 99%

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CYTOLOGICAL OBSERVATIONS ON THE CALLUSES AND THE RESTORED THALLUSES IN MARCHANTIA POLYMORPHA

Ono

1976

The Japanese journal of genetics

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Section: Discussionmentioning

confidence: 99%

“…On the other hand, several workers have reported that calluses of some Bryophyte species do not give any indication of polyploid or aneuploid (Ward 1960;Lal 1961;Rashid and Chopra 1969).…”

mentioning

confidence: 99%

CYTOLOGICAL OBSERVATIONS ON THE CALLUSES AND THE RESTORED THALLUSES IN MARCHANTIA POLYMORPHA

Ono

1976

The Japanese journal of genetics

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“…Although several chlorophyllous cell lines have been derived from higher plants, the majority of the cells exhibit a low rate of photoautotrophic growth, probably because the Chi content of the cells is low. Callus cells from bryophytes generally contain a high concentration of Chi (AUsopp 1957, Ward 1960, but few attempts have been made to establish suspension cultures of bryophyte cells. However, such cultures were established from the liverworts, Marchantiapolymorpha (Katoh et al 1980), Jungermannia subulata (Ohta et al 1981) and Calypogeia granulata (Takeda and Katoh 1981).…”

Section: Introductionmentioning

confidence: 99%

Establishment and growth characterization of suspension culture of cells from the moss, Sphagnum imbrication

Kajita

Takio

Takami

et al. 1987

Physiologia Plantarum

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A green‐pigmented callus of the moss, Sphagnum imbricatum Hornsch. ex. Russ., was induced and a chlorophyllous cell suspension culture was established using a modified Murashige and Skoog's medium without plant hormones. Cell growth in the light in the presence of glucose started after a short lag and was exponential for 12 days. The chlorophyll level was about 15 μg (mg cell dry weight)−1 and photosynthetic activity ca 20 to 50 μmol O2 (mg chlorophyll)−1h−1. Cell growth in the light was negligible in the absence of glucose under ordinary air, but photoautotrophic growth was possible under elevated CO2 concentrations. In the dark, the moss cells grew heterotrophically and continued to synthesize chlorophyll, although at a much reduced rate. The suspension‐cultured cells redifferentiated protonemata and shoots when transferred to solid Knop's medium. In contrast to the callus cells, which could not assimilate nitrate, redifferentiated plantlets could use nitrate as the sole nitrogen source.

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“…Isoprene emitted by these early plants should be accounted for in models of early climate and biological environmental engineering. Under current climate conditions, mosses occur on every continent, dominating observed biomass in the high arctic and can tolerate a wide array of temperature and water stresses (Ward 1960;Collins 1976;Corradini et al 1999;Van der Velde et al 2001review Mishler et al 2001;Wilson et al 2003;Shafigullina et al 2018;Ojiodu et al 2018). Global warming may lead to the expansion of isoprene emitting moss communities in some regions such as Antarctica and an increase in landscape level isoprene emissions with profound implications for climate change.…”

Section: Introductionmentioning

confidence: 99%

Isoprene Emission in Polytrichaceae Mosses

Deakova¹

2000

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Our first aim was to identify and quantify Biological Volatile Organic Compound (BVOC) emissions, specifically emissions of isoprene, from the moss Polytrichum juniperinum during its earliest stage of life. Isoprene emission from mosses could be a significant component of the total global budget of BVOC emissions. Data concerning the spatial and temporal variability of these emissions are lacking due to poor characterization of the physical and biological factors controlling isoprene synthesis in both vascular and non-vascular plants. We found that P. juniperinum in its early life stage (protonema) can emit isoprene at detectable levels at day five after spore germination. These results suggest that protonema is capable of isoprene emission, shown here for the first time, and media affects emission rates. We saw a negative trend with leaf emergence and protonema growth. Chlorophyll fluorescence ratio had a positive correlation with isoprene emission, and isoprene emission was both temperature and light dependent in early protonema. Our second aim was to determine the effects of sex and sexual expression on isoprene emission in mosses. Sex is a biologically costly, but it can result in genetic adaptability and variety for resulting offspring. Using three Polytrichaceae species, we measured isoprene emission between plants sexually expressing and non-expressing and between male and female moss plants. We found that non-sexually expressing gametophytes had significantly higher isoprene emission than gametophytes expressing sex, suggesting that sex expression may be costly and that additional resources are v Table of Contents

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Callus Tissues from the Mosses Polytrichum and Atrichum

Cited by 27 publications

References 3 publications

CYTOLOGICAL OBSERVATIONS ON THE CALLUSES AND THE RESTORED THALLUSES IN <i>MARCHANTIA POLYMORPHA</i>

CYTOLOGICAL OBSERVATIONS ON THE CALLUSES AND THE RESTORED THALLUSES IN <i>MARCHANTIA POLYMORPHA</i>

Establishment and growth characterization of suspension culture of cells from the moss, Sphagnum imbrication

Isoprene Emission in Polytrichaceae Mosses

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