Claim · model-written summary
Expansin abundance did not decrease between 3- and 4-day-old hypocotyls, so the decrease in cell wall extensibility was not mediated by expansin.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae0 - Outcome
- expansin abundancee2
- Qualifier
- not mediated by a decreasee2
Verbatim
e0“we critically tested several metrics (creep rate, creep rate×stress-1, in vitro cell wall extensibility (ϕ) and in vitro cell wall yield threshold (y)) for their ability to predict growth rates of etiolated Arabidopsis thaliana (L. Heynh.) hypocotyls”
e2“the decrease in ϕ between 3- and 4-day-old hypocotyls was not mediated by a decrease in expansin abundance”
Title
Dmitry Suslov; Alexander Ivakov; Agnieszka K. Boron; et al. Functional Plant Biology 2015. doi:10.1071/fp15190
Other claims from this paper (5)
- Method / resource In vitro cell wall extensibility (ϕ) was the best indicator of hypocotyl growth rate among the tested creep metrics.
- Observation Growth rate of etiolated Arabidopsis hypocotyls decreased 3-fold between 3- and 4-day-old hypocotyls.
- Association The 3-fold growth rate decrease of 4-day-old hypocotyls was accompanied by a 3-fold decrease in cell wall extensibility (ϕ) relative to 3-day-old hypocotyls.
- Mechanism Acid-induced expansin-mediated creep of cell walls resulted exclusively from increasing ϕ values.
- Recommendation Practical recommendations are given for the most efficient use of creep rate, creep rate×stress-1, ϕ and y in different experimental situations.