Claim · model-written summary
Enhanced photorespiration in pSARK-IPT transgenic plants may lead to CO2 fixation under drought.
- Taxon
- crop plantst0
- Material
- pSARK-IPT trangenic plantse4
- Outcome
- CO2 fixation under drought conditionse4
- Qualifier
- enhanced photorespiratione4
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Verbatim
t0“Delayed leaf senescence induces extreme drought tolerance in crop plants”
e4“indicated the occurrence of enhanced photorespiration in the pSARK-IPT trangenic plants leading to CO2 fixation under drought conditions”
Title
Delayed leaf senescence induces extreme drought tolerance in crop plants
Rosa M. Rivero; Zvi Peleg; Mark W. Szczerba; et al. eScholarship (California Digital Library) 2009
Other claims from this paper (12)
- Intervention effect Suppressing drought-induced leaf senescence gave outstanding drought tolerance, with transgenic plants growing vigorously after a long drought that killed control plants.
- Observation Transgenic pSARK-IPT plants maintained high water contents during drought.
- Observation Transgenic pSARK-IPT plants retained photosynthetic activity during drought, at a reduced level.
- Intervention effect Drought severely affected RuBP regeneration and triose phosphate use in wild-type plants but not in transgenic plants.
- Intervention effect Transgenic plants under reduced watering (30% of control water) showed minimal yield loss.
- Observation Transgenic plants under reduced watering showed induction of photorespiration.
- Observation Array analysis showed major expression level differences between tolerant and wild-type plants for chloroplast photosynthesis genes.
- Observation Key PSII, PSI and ATPase complex genes were strongly repressed in stressed wild-type plants.
- Observation Key PSII, PSI and ATPase complex genes were unaffected or marginally repressed in stressed pSARK::IPT plants.
- Observation Transcript abundance of oxidative stress tolerance and photo-protection genes was higher in pSARK::IPT than in wild-type plants.
- Observation At protein level, D1, Cyt b6 and alpha-ATPase were strongly repressed only in stressed wild-type plants.
- Recommendation Drought-tolerant crops able to grow under restricted water without yield loss would minimise drought-related losses.