scholarly journals Protein Synthesis and Photosynthetic Recovery in the Resurrection Plant, Selaginella lepidophylla

1982 ◽  
Vol 69 (1) ◽  
pp. 135-138 ◽  
Author(s):  
William G. Eickmeier
Keyword(s):  
Protein Synthesis ◽  
Resurrection Plant ◽  
Selaginella Lepidophylla ◽  
Photosynthetic Recovery

scholarly journals Hydro-Responsive Curling of the Resurrection Plant Selaginella lepidophylla

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Ahmad Rafsanjani ◽  
Véronique Brulé ◽  
Tamara L. Western ◽  
Damiano Pasini
Keyword(s):  
Resurrection Plant ◽  
Selaginella Lepidophylla

Reduced photoinhibition with stem curling in the resurrection plant Selaginella lepidophylla

Oecologia ◽  
1991 ◽  
Vol 88 (4) ◽  
pp. 597-604 ◽  
Author(s):  
Jefferson G. Lebkuecher ◽  
William G. Eickmeier
Keyword(s):  
Resurrection Plant ◽  
Selaginella Lepidophylla

The correlation between high-temperature and desiccation tolerances in a poikilohydric desert plant

1986 ◽  
Vol 64 (3) ◽  
pp. 611-617 ◽  
Author(s):  
William G. Eickmeier
Keyword(s):  
Protein Synthesis ◽  
High Temperature ◽  
Membrane Damage ◽  
Temperature Tolerance ◽  
Desert Plant ◽  
Rubp Carboxylase ◽  
C Storage ◽  
High Temperature Tolerance ◽  
Whole Plant ◽  
Photosynthetic Recovery

The high-temperature tolerance of the desiccation-tolerant pteridophyte Selaginella lepidophylla (Hook. & Grev.) Spring was examined under laboratory conditions. Both desiccated whole plants and detached fronds were stored at 25, 45, and 65 °C for 1 to 70 days. The effects of high-temperature storage on whole plant photosynthetic recovery, conservation of ribulose 1,5-bisphosphate (RuBP) carboxylase in desiccated fronds, apparent membrane damage as measured by frond leakage of electrolytic and UV-absorbing materials upon rehydration, and protein synthesis upon rehydration of detached fronds were determined. The temperature dependence of net photosynthesis of fully recovered, hydrated plants was also described. Desiccated storage for 17 days at 45 °C significantly impaired whole-plant photosynthetic recovery, and conservation of RuBP carboxylase in desiccated fronds declined within 33 days of storage at 45 °C, both relative to 25 °C controls. Storage at 65 °C caused additional inhibition of both photosynthetic recovery (after 17 and 33 days) and RuBP carboxylase conservation (within 70 days) over that for 45 °C storage. Frond leakage was significantly increased and protein synthesis was significantly reduced after 65 °C storage for 7 and 33 days, respectively, relative to controls. These results suggest that desiccation tolerance and high-temperature tolerance are not highly correlated in S. lepidophylla, which is more sensitive to high-temperature conditions when both hydrated and desiccated than was initially expected for a poikilohydric desert pteridophyte.

An EST catalogue from the resurrection plant Selaginella lepidophylla reveals abiotic stress-adaptive genes

Plant Science ◽  
2006 ◽  
Vol 170 (6) ◽  
pp. 1173-1184 ◽  
Author(s):  
Gabriel Iturriaga ◽  
Mary Ann F. Cushman ◽  
John C. Cushman
Keyword(s):  
Abiotic Stress ◽  
Resurrection Plant ◽  
Selaginella Lepidophylla

The effects of desiccation rate on enzyme and protein-synthesis dynamics in the desiccation-tolerant pteridophyte Selaginella lepidophylla

1988 ◽  
Vol 66 (12) ◽  
pp. 2574-2580 ◽  
Author(s):  
William G. Eickmeier
Keyword(s):  
Protein Synthesis ◽  
Recovery Period ◽  
Dry Weight ◽  
Synthesis Rate ◽  
Protein Synthesis Rate ◽  
Dual Isotope ◽  
Desiccation Rate ◽  
Metabolism Enzymes ◽  
Wide Range ◽  
Selaginella Lepidophylla

The effects of desiccation rate on enzyme and protein-synthesis dynamics in the desiccation-tolerant pteridophyte Selaginella lepidophylla (Hook. & Grev.) Spring were examined in the laboratory. Detached, hydrated fronds were desiccated at four rates ranging from 5 to 150 h to frond curling at a water content of 0.35 g H2O∙g dry weight−1. Activities of 10 carbohydrate metabolism enzymes were determined following extraction from both desiccated and rehydrated fronds. Rehydration protein-synthesis rate was determined by the rate of [35S]methionine incorporation and the protein-synthesis profile was examined with a dual-isotope, [3H]leucine and [14C]leucine incoporation and electrophoresis technique. Rate of desiccation significantly affected the conservation and (or) rehydration activity increases of four enzymes; intermediate desiccation rates generally maximized enzyme activity. Desiccation rate did not affect protein-synthesis rate late in rehydration but did appear to affect the nature of proteins synthesized relative to control patterns over a full 24-h recovery period. These results help explain why whole-plant photosynthetic recovery in S. lepidophylla is fastest after intermediate desiccation (ca. 50–100 h to frond curling), but they also indicate that the species is tolerant of a wide range of desiccation rates.

Sign in / Sign up

Export Citation Format

Share Document