Claim · model-written summary
In vitro cell wall extensibility (ϕ) was the best indicator of hypocotyl growth rate among the tested creep metrics.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae0 - Outcome
- best indicator of growth ratee1
- Comparator
- creep ratee0
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”
e1“The best indicator of growth rate was ϕ because the 3-fold developmental decrease in the growth rate of 4- vs 3-day-old hypocotyls was accompanied by a 3-fold decrease in ϕ determined at pH 5”
Title
Dmitry Suslov; Alexander Ivakov; Agnieszka K. Boron; et al. Functional Plant Biology 2015. doi:10.1071/fp15190
Other claims from this paper (5)
- 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.
- Observation Expansin abundance did not decrease between 3- and 4-day-old hypocotyls, so the decrease in cell wall extensibility was not mediated by expansin.
- 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.