Claim · model-written summary
SPS activation state increased with water stress.
- Taxon
- rice
Oryza sativat0 - Treatment
- water stresse2
- Gene
- V(limit)e0
- Outcome
- activation state (V(limit)/V(max))e0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“activation state (V(limit)/V(max)) was also increased as a result of the more significant enhancement of V(limit)”
t0“rice”
t1“rice”
e1“Two rice cultivars, showing high lodging-resistance and slow remobilization, were grown in the field and subjected to well-watered (WW, psi(soil)=0) and water-stressed (WS, psi(soil)=-0.05 MPa) treatments 9 d after anthesis (DAA) till maturity”
e2“Water stress also increased the SPS activity”
e3“Both alpha- and beta-amylase activities were enhanced by the WS, with the former enhanced more than the latter”
Title
Jianchang Yang; Jianhua Zhang; Zhiqing Wang; et al. Journal of Experimental Botany 2001. doi:10.1093/jexbot/52.364.2169
Other claims from this paper (15)
- Intervention effect Water stress lowered daytime leaf water potential, which recovered by early morning.
- Intervention effect Water stress accelerated stem starch reduction.
- Intervention effect Water stress promoted prefixed carbon reallocation from stems to grains.
- Intervention effect Water stress shortened the grain filling period.
- Intervention effect Water stress increased grain filling rate.
- Intervention effect More soluble sugars accumulated in stems under water stress than well-watered treatment.
- Intervention effect Water stress enhanced alpha-amylase activity more than beta-amylase activity.
- Association Amylase activities correlated significantly with stem soluble sugars.
- Intervention effect Alpha-glucosidase activity did not differ significantly between well-watered and water-stressed treatments.
- Intervention effect Starch phosphorylase activity did not differ significantly between well-watered and water-stressed treatments.
- Intervention effect Water stress increased SPS activity.
- Intervention effect Water stress enhanced SPS V(limit).
- Intervention effect Water stress enhanced SPS V(max).
- Association Enhanced SPS activity correlated closely with sucrose accumulation in stems.
- Mechanism Authors attribute faster starch hydrolysis and carbon remobilization under water stress to alpha-amylase and SPS activation.